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The 2018 season’s official transaction log: 3,561 trades, signings and releases involving major-league clubs, listed newest first with MLB’s own description of each move.
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Dec 31, 2018 | Signed as free agent | D.J. Peterson | — | Chicago White Sox | Chicago White Sox signed free agent 1B D.J. Peterson to a minor league contract and invited him to spring training. |
| Dec 31, 2018 | Signed as free agent | Shane Peterson | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Shane Peterson to a minor league contract and invited him to spring training. |
| Dec 30, 2018 | Trade | Clayton Richard | San Diego Padres | Toronto Blue Jays | San Diego Padres traded cash and LHP Clayton Richard to Toronto Blue Jays for RF Connor Panas. |
| Dec 30, 2018 | Trade | Robby Scott | Cincinnati Reds | Arizona Diamondbacks | Cincinnati Reds traded LHP Robby Scott to Arizona Diamondbacks for cash. |
| Dec 29, 2018 | Signed as free agent | Jonathan Lucroy | — | Los Angeles Angels | Los Angeles Angels signed free agent C Jonathan Lucroy. |
| Dec 29, 2018 | Signed as free agent | Martin Salazar | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Martin Salazar to a minor league contract. |
| Dec 29, 2018 | Signed as free agent | Jesus Rojas | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Jesus Rojas to a minor league contract. |
| Dec 28, 2018 | Signed as free agent | Matt Shoemaker | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Matt Shoemaker. |
| Dec 27, 2018 | Signed as free agent | Aníbal Sánchez | — | Washington Nationals | Washington Nationals signed free agent RHP Anibal Sanchez. |
| Dec 27, 2018 | Signed as free agent | Wilbur Martinez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Wilbur Martinez to a minor league contract. |
| Dec 26, 2018 | Signed as free agent | Jose Marquez | — | Washington Nationals | Washington Nationals signed free agent RHP Jose Marquez to a minor league contract. |
| Dec 26, 2018 | Signed as free agent | Anthony Bass | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Anthony Bass to a minor league contract and invited him to spring training. |
| Dec 25, 2018 | Signed as free agent | Lians Beato | — | Baltimore Orioles | Baltimore Orioles signed free agent C Lians Beato to a minor league contract. |
| Dec 24, 2018 | Signed as free agent | Mike Fiers | — | Athletics | Oakland Athletics signed free agent RHP Mike Fiers. |
| Dec 24, 2018 | Signed as free agent | Tyler Lyons | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Tyler Lyons to a minor league contract and invited him to spring training. |
| Dec 23, 2018 | Signed as free agent | Kendall Graveman | — | Chicago Cubs | Chicago Cubs signed free agent RHP Kendall Graveman. |
| Dec 22, 2018 | Signed as free agent | Brandon Barnes | — | Cleveland Guardians | Cleveland Indians signed free agent OF Brandon Barnes to a minor league contract and invited him to spring training. |
| Dec 22, 2018 | Signed as free agent | Brooks Pounders | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Brooks Pounders to a minor league contract and invited him to spring training. |
| Dec 22, 2018 | Signed as free agent | Donn Roach | — | Chicago White Sox | Chicago White Sox signed free agent RHP Donn Roach to a minor league contract and invited him to spring training. |
| Dec 22, 2018 | Signed as free agent | Luis Hernandez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Luis Hernandez to a minor league contract. |
| Dec 21, 2018 | Signed as free agent | Andrew Miller | — | St. Louis Cardinals | St. Louis Cardinals signed free agent LHP Andrew Miller. |
| Dec 21, 2018 | Signed as free agent | Jeremy Bleich | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Jeremy Bleich to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Rob Brantly | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Rob Brantly to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Phil Gosselin | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 2B Phil Gosselin to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Matt McBride | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Matt McBride to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Josh Martin | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Josh Martin to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Gregorio Petit | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Gregorio Petit to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Shane Robinson | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LF Shane Robinson to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Trade | Jurickson Profar | Texas Rangers | Athletics | Texas Rangers Traded 2B Jurickson Profar to Oakland Athletics; Oakland Athletics Traded 2B Eli White and Future Considerations to Texas Rangers; Oakland Athletics Traded RHP Emilio Pagan and Future Considerations to Tampa Bay Rays; Tampa Bay Rays Traded LHP Kyle Bird, LHP Brock Burke and RHP Yoel Espinal to Texas Rangers and Texas Rangers Traded RHP Rollie Lacy to Tampa Bay Rays. |
| Dec 21, 2018 | Signed as free agent | Joakim Soria | — | Athletics | Oakland Athletics signed free agent RHP Joakim Soria. |
| Dec 21, 2018 | Signed as free agent | Pat Venditte | — | San Francisco Giants | San Francisco Giants signed free agent Pat Venditte. |
| Dec 21, 2018 | Signed as free agent | Ryan Bollinger | — | San Diego Padres | San Diego Padres signed free agent LHP Ryan Bollinger to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Dietrich Enns | — | San Diego Padres | San Diego Padres signed free agent LHP Dietrich Enns to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Tyler Higgins | — | San Diego Padres | San Diego Padres signed free agent RHP Tyler Higgins to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Seth Mejias-Brean | — | San Diego Padres | San Diego Padres signed free agent 3B Seth Mejias-Brean to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Aderlin Rodríguez | — | San Diego Padres | San Diego Padres signed free agent 1B Aderlin Rodriguez to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Jacob Scavuzzo | — | San Diego Padres | San Diego Padres signed free agent OF Jacob Scavuzzo to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Allen Craig | — | San Diego Padres | San Diego Padres signed free agent 1B Allen Craig to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Eric Sogard | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 2B Eric Sogard to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Miguel Del Pozo | — | Texas Rangers | Texas Rangers signed free agent LHP Miguel Del Pozo to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Nolan Fontana | — | Texas Rangers | Texas Rangers signed free agent SS Nolan Fontana to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Ariel Hernández | — | Texas Rangers | Texas Rangers signed free agent RHP Ariel Hernandez to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Phillips Valdez | — | Texas Rangers | Texas Rangers signed free agent RHP Phillips Valdez to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Jack Leathersich | — | Texas Rangers | Texas Rangers signed free agent LHP Jack Leathersich to a minor league contract. |
| Dec 21, 2018 | Signed as free agent | Daniel Murphy | — | Colorado Rockies | Colorado Rockies signed free agent 1B Daniel Murphy. |
| Dec 21, 2018 | Signed as free agent | Joe Kelly | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Joe Kelly. |
| Dec 21, 2018 | Trade | Alex Wood | Los Angeles Dodgers | Cincinnati Reds | Los Angeles Dodgers traded RF Yasiel Puig, LF Matt Kemp, LHP Alex Wood, C Kyle Farmer and cash to Cincinnati Reds for RHP Homer Bailey, SS Jeter Downs and RHP Josiah Gray. |
| Dec 21, 2018 | Signed as free agent | Matt Harvey | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Matt Harvey. |
| Dec 21, 2018 | Signed as free agent | Charlie Morton | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Charlie Morton. |
| Dec 21, 2018 | Trade | Ben Gamel | Seattle Mariners | Milwaukee Brewers | Milwaukee Brewers traded LF Domingo Santana to Seattle Mariners for LF Ben Gamel and RHP Noah Zavolas. |
| Dec 21, 2018 | Signed as free agent | Grégor Blanco | — | New York Mets | New York Mets signed free agent CF Gregor Blanco to a minor league contract and invited him to spring training. |
| Dec 21, 2018 | Signed as free agent | Jose Ruviera | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Jose Ruviera to a minor league contract. |
| Dec 21, 2018 | Signed as free agent | Joel Ibarra | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent SS Joel Ibarra to a minor league contract. |
| Dec 20, 2018 | Signed as free agent | Mike Morin | — | Minnesota Twins | Minnesota Twins signed free agent RHP Mike Morin to a minor league contract and invited him to spring training. |
| Dec 20, 2018 | Signed as free agent | Dean Anna | — | Minnesota Twins | Minnesota Twins signed free agent SS Dean Anna to a minor league contract and invited him to spring training. |
| Dec 20, 2018 | Signed as free agent | Trevor Cahill | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Trevor Cahill. |
| Dec 20, 2018 | Signed as free agent | Ian Kinsler | — | San Diego Padres | San Diego Padres signed free agent 2B Ian Kinsler. |
| Dec 20, 2018 | Signed as free agent | Zac Rosscup | — | Seattle Mariners | Seattle Mariners signed free agent LHP Zac Rosscup. |
| Dec 20, 2018 | Signed as free agent | Danny Coulombe | — | New York Yankees | New York Yankees signed free agent LHP Danny Coulombe to a minor league contract and invited him to spring training. |
| Dec 20, 2018 | Signed as free agent | Rex Brothers | — | New York Yankees | New York Yankees signed free agent LHP Rex Brothers to a minor league contract and invited him to spring training. |
| Dec 20, 2018 | Signed as free agent | Junior A. Guzman | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Junior A. Guzman to a minor league contract. |
| Dec 20, 2018 | Signed as free agent | Willy Gaston | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP William Gaston to a minor league contract. |
| Dec 20, 2018 | Signed as free agent | Carson Smith | — | Boston Red Sox | Boston Red Sox signed free agent RHP Carson Smith to a minor league contract and invited him to spring training. |
| Dec 20, 2018 | Signed as free agent | Ryan Weber | — | Boston Red Sox | Boston Red Sox signed free agent RHP Ryan Weber to a minor league contract and invited him to spring training. |
| Dec 20, 2018 | Signed as free agent | Harold Melenge | — | Seattle Mariners | Seattle Mariners signed free agent LHP Harold Melenge to a minor league contract. |
| Dec 20, 2018 | Signed as free agent | Jarrett Parker | — | Los Angeles Angels | Los Angeles Angels signed free agent LF Jarrett Parker to a minor league contract and invited him to spring training. |
| Dec 20, 2018 | Signed as free agent | Ryan Court | — | Chicago Cubs | Chicago Cubs signed free agent SS Ryan Court to a minor league contract and invited him to spring training. |
| Dec 20, 2018 | Signed as free agent | Ryan Newell | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Ryan Newell to a minor league contract and invited him to spring training. |
| Dec 19, 2018 | Signed as free agent | Michael Brantley | — | Houston Astros | Houston Astros signed free agent LF Michael Brantley. |
| Dec 19, 2018 | Signed as free agent | James McCann | — | Chicago White Sox | Chicago White Sox signed free agent C James McCann. |
| Dec 19, 2018 | Signed as free agent | Nick Ramirez | — | Detroit Tigers | Detroit Tigers signed free agent LHP Nick Ramirez to a minor league contract. |
| Dec 19, 2018 | Signed as free agent | Eduardo Paredes | — | Detroit Tigers | Detroit Tigers signed free agent RHP Eduardo Paredes to a minor league contract and invited him to spring training. |
| Dec 19, 2018 | Signed as free agent | Chris Smith | — | Detroit Tigers | Detroit Tigers signed free agent RHP Chris Smith to a minor league contract and invited him to spring training. |
| Dec 19, 2018 | Released | Carlos Asuaje | — | Texas Rangers | Texas Rangers released 2B Carlos Asuaje. |
| Dec 19, 2018 | Signed as free agent | Michael Deeb | — | Chicago White Sox | Chicago White Sox signed free agent 1B Michael Deeb to a minor league contract. |
| Dec 19, 2018 | Signed as free agent | Juan Polo | — | Kansas City Royals | Kansas City Royals signed free agent RHP Juan Polo to a minor league contract. |
| Dec 19, 2018 | Signed as free agent | Mike Zagurski | — | Chicago Cubs | Chicago Cubs signed free agent LHP Mike Zagurski to a minor league contract and invited him to spring training. |
| Dec 19, 2018 | Signed as free agent | Phillip Evans | — | Chicago Cubs | Chicago Cubs signed free agent 3B Phillip Evans to a minor league contract and invited him to spring training. |
| Dec 18, 2018 | Signed as free agent | Wilson Ramos | — | New York Mets | New York Mets signed free agent C Wilson Ramos. |
| Dec 18, 2018 | Signed as free agent | Matt Adams | — | Washington Nationals | Washington Nationals signed free agent 1B Matt Adams. |
| Dec 18, 2018 | Signed as free agent | Daniel Descalso | — | Chicago Cubs | Chicago Cubs signed free agent 2B Daniel Descalso. |
| Dec 18, 2018 | Signed as free agent | Terrance Gore | — | Kansas City Royals | Kansas City Royals signed free agent LF Terrance Gore. |
| Dec 18, 2018 | Signed as free agent | Chris Dula | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Chris Dula to a minor league contract. |
| Dec 18, 2018 | Signed as free agent | Lance Lynn | — | Texas Rangers | Texas Rangers signed free agent RHP Lance Lynn. |
| Dec 18, 2018 | Signed as free agent | Daniele Di Monte | — | Detroit Tigers | Detroit Tigers signed free agent RHP Daniele Di Monte to a minor league contract. |
| Dec 18, 2018 | Signed as free agent | Juan Cordero | — | Detroit Tigers | Detroit Tigers signed free agent RHP Juan Cordero to a minor league contract. |
| Dec 18, 2018 | Signed as free agent | Alfredo Raciel | — | Detroit Tigers | Detroit Tigers signed free agent RHP Alfredo Raciel to a minor league contract. |
| Dec 18, 2018 | Signed as free agent | Erasmo Ramírez | — | Boston Red Sox | Boston Red Sox signed free agent RHP Erasmo Ramirez to a minor league contract and invited him to spring training. |
| Dec 17, 2018 | Signed as free agent | Matt Bush | — | Texas Rangers | Texas Rangers signed free agent RHP Matt Bush to a minor league contract and invited him to spring training. |
| Dec 17, 2018 | Signed as free agent | Zac Curtis | — | Texas Rangers | Texas Rangers signed free agent LHP Zac Curtis to a minor league contract and invited him to spring training. |
| Dec 17, 2018 | Signed as free agent | Tim Dillard | — | Texas Rangers | Texas Rangers signed free agent RHP Tim Dillard to a minor league contract and invited him to spring training. |
| Dec 17, 2018 | Signed as free agent | Chase d'Arnaud | — | Texas Rangers | Texas Rangers signed free agent 3B Chase d'Arnaud to a minor league contract and invited him to spring training. |
| Dec 17, 2018 | Trade | Andruw Monasterio | Washington Nationals | Cleveland Guardians | Washington Nationals traded 2B Andruw Monasterio to Cleveland Indians. |
| Dec 17, 2018 | Signed as free agent | J.A. Happ | — | New York Yankees | New York Yankees signed free agent LHP J.A. Happ. |
| Dec 17, 2018 | Signed as free agent | Bubba Starling | — | Kansas City Royals | Kansas City Royals signed free agent OF Bubba Starling to a minor league contract and invited him to spring training. |
| Dec 17, 2018 | Signed as free agent | Samir Dueñez | — | Kansas City Royals | Kansas City Royals signed free agent 1B Samir Duenez to a minor league contract and invited him to spring training. |
| Dec 17, 2018 | Signed as free agent | Jordan Lyles | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Jordan Lyles. |
| Dec 17, 2018 | Signed as free agent | Jason Adam | — | Kansas City Royals | Kansas City Royals signed free agent RHP Jason Adam to a minor league contract and invited him to spring training. |
| Dec 17, 2018 | Signed as free agent | Rajai Davis | — | New York Mets | New York Mets signed free agent CF Rajai Davis to a minor league contract and invited him to spring training. |
| Dec 17, 2018 | Signed as free agent | Jose Marcano | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 2B Jose Marcano to a minor league contract. |
| Dec 17, 2018 | Signed as free agent | Andreuris Meran | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Andreuris Meran to a minor league contract. |
| Dec 17, 2018 | Signed as free agent | Alexis Pichardo | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Alexis Pichardo to a minor league contract. |
| Dec 17, 2018 | Signed as free agent | Steven Baron | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Steven Baron to a minor league contract and invited him to spring training. |
| Dec 17, 2018 | Signed as free agent | Mason Williams | — | Cincinnati Reds | Cincinnati Reds signed free agent CF Mason Williams to a minor league contract and invited him to spring training. |
| Dec 16, 2018 | Signed as free agent | Sean Miller | — | Baltimore Orioles | Baltimore Orioles signed free agent SS Sean Miller to a minor league contract. |
| Dec 16, 2018 | Signed as free agent | Eric Carter | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Eric Carter to a minor league contract. |
| Dec 15, 2018 | Trade | Yonder Alonso | Cleveland Guardians | Chicago White Sox | Cleveland Indians traded 1B Yonder Alonso to Chicago White Sox for RF Alex Call. |
| Dec 15, 2018 | Signed as free agent | Justin Bour | — | Los Angeles Angels | Los Angeles Angels signed free agent Justin Bour. |
| Dec 15, 2018 | Signed as free agent | Alejandro Lugo | — | San Diego Padres | San Diego Padres signed free agent RHP Alejandro Lugo to a minor league contract. |
| Dec 15, 2018 | Signed as free agent | Reidis Sena | — | Boston Red Sox | Boston Red Sox signed free agent RHP Reidis Sena to a minor league contract. |
| Dec 14, 2018 | Signed as free agent | Jordy Mercer | — | Detroit Tigers | Detroit Tigers signed free agent SS Jordy Mercer. |
| Dec 14, 2018 | Signed as free agent | Jeurys Familia | — | New York Mets | New York Mets signed free agent RHP Jeurys Familia. |
| Dec 14, 2018 | Signed as free agent | Gustavo Del Pozo | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Gustavo Del Pozo to a minor league contract. |
| Dec 14, 2018 | Signed as free agent | Raulyn Blanc | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Raulyn Blanc to a minor league contract. |
| Dec 14, 2018 | Signed as free agent | Zach Putnam | — | Boston Red Sox | Boston Red Sox signed free agent RHP Zach Putnam to a minor league contract and invited him to spring training. |
| Dec 14, 2018 | Signed as free agent | Daniel Corcino | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Daniel Corcino to a minor league contract and invited him to spring training. |
| Dec 14, 2018 | Signed as free agent | Alexander Capriata | — | Seattle Mariners | Seattle Mariners signed free agent C Alexander Capriata to a minor league contract. |
| Dec 14, 2018 | Signed as free agent | Aaron Knapp | — | Seattle Mariners | Seattle Mariners signed free agent CF Aaron Knapp to a minor league contract. |
| Dec 14, 2018 | Signed as free agent | Matt Szczur | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent CF Matt Szczur to a minor league contract and invited him to spring training. |
| Dec 14, 2018 | Signed as free agent | Jaron Long | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jaron Long to a minor league contract and invited him to spring training. |
| Dec 13, 2018 | Trade | Drew Jackson | Philadelphia Phillies | Baltimore Orioles | Philadelphia Phillies traded SS Drew Jackson to Baltimore Orioles for Future Considerations. |
| Dec 13, 2018 | Trade | Cole Sulser | Cleveland Guardians | Tampa Bay Rays | Cleveland Indians Traded 1B Edwin Encarnacion and Future Considerations to Seattle Mariners; Tampa Bay Rays Traded LF Jake Bauers to Cleveland Indians; Seattle Mariners Traded 1B Carlos Santana to Cleveland Indians; Cleveland Indians Traded 3B Yandy Diaz and RHP Cole Sulser to Tampa Bay Rays and Tampa Bay Rays Traded cash to Seattle Mariners. |
| Dec 13, 2018 | Trade | Chris Ellis | Texas Rangers | Kansas City Royals | Texas Rangers traded RHP Chris Ellis to Kansas City Royals for cash. |
| Dec 13, 2018 | Trade | Alex Claudio | Texas Rangers | Milwaukee Brewers | Texas Rangers traded LHP Alex Claudio to Milwaukee Brewers for Future Considerations. |
| Dec 13, 2018 | Trade | Jordan Romano | Chicago White Sox | Texas Rangers | Chicago White Sox traded RHP Jordan Romano to Texas Rangers for cash. |
| Dec 13, 2018 | Signed as free agent | Alex Dickerson | — | San Diego Padres | San Diego Padres signed free agent OF Alex Dickerson to a minor league contract and invited him to spring training. |
| Dec 13, 2018 | Trade | Cristofer Melendez | San Diego Padres | Pittsburgh Pirates | San Diego Padres traded RHP Cristofer Melendez to Pittsburgh Pirates for cash. |
| Dec 13, 2018 | Trade | Conor Lillis-White | Los Angeles Angels | Chicago Cubs | Los Angeles Angels traded LHP Conor Lillis-White to Chicago Cubs. |
| Dec 13, 2018 | Trade | Tyler Hill | Detroit Tigers | New York Yankees | Detroit Tigers traded Tyler Hill to New York Yankees for cash. |
| Dec 13, 2018 | Signed as free agent | Gorkys Hernández | — | Boston Red Sox | Boston Red Sox signed free agent CF Gorkys Hernandez to a minor league contract and invited him to spring training. |
| Dec 13, 2018 | Signed as free agent | Vinny Nittoli | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Vinny Nittoli to a minor league contract and invited him to spring training. |
| Dec 13, 2018 | Signed as free agent | Jake Greenwalt | — | San Francisco Giants | San Francisco Giants signed free agent RHP Jake Greenwalt to a minor league contract. |
| Dec 12, 2018 | Trade | Tanner Roark | Washington Nationals | Cincinnati Reds | Washington Nationals traded RHP Tanner Roark to Cincinnati Reds for RHP Tanner Rainey. |
| Dec 12, 2018 | Signed as free agent | Andrew McCutchen | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LF Andrew McCutchen. |
| Dec 12, 2018 | Signed as free agent | Jesus Bugarin | — | Colorado Rockies | Colorado Rockies signed free agent OF Jesus Bugarin to a minor league contract. |
| Dec 12, 2018 | Signed as free agent | Ever Olmedo | — | Colorado Rockies | Colorado Rockies signed free agent RHP Ever Olmedo to a minor league contract. |
| Dec 12, 2018 | Signed as free agent | Yoljeldriz Diaz | — | New York Yankees | New York Yankees signed free agent RHP Yoljeldriz Diaz to a minor league contract. |
| Dec 11, 2018 | Released | Troy Tulowitzki | — | Toronto Blue Jays | Toronto Blue Jays released SS Troy Tulowitzki. |
| Dec 11, 2018 | Trade | Iván Nova | Pittsburgh Pirates | Chicago White Sox | Pittsburgh Pirates traded RHP Ivan Nova to Chicago White Sox for RHP Yordi Rosario and Future Considerations. |
| Dec 11, 2018 | Signed as free agent | Billy Hamilton | — | Kansas City Royals | Kansas City Royals signed free agent CF Billy Hamilton. |
| Dec 11, 2018 | Trade | Drew Robinson | Texas Rangers | St. Louis Cardinals | Texas Rangers traded 3B Drew Robinson to St. Louis Cardinals for 3B Patrick Wisdom. |
| Dec 11, 2018 | Signed as free agent | Chris Herrmann | — | Athletics | Oakland Athletics signed free agent C Chris Herrmann. |
| Dec 11, 2018 | Signed as free agent | Matt Ramsey | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Matt Ramsey to a minor league contract and invited him to spring training. |
| Dec 10, 2018 | Signed as free agent | Deolis Guerra | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Deolis Guerra to a minor league contract and invited him to spring training. |
| Dec 10, 2018 | Signed as free agent | Tuffy Gosewisch | — | Milwaukee Brewers | Milwaukee Brewers signed free agent C Tuffy Gosewisch to a minor league contract and invited him to spring training. |
| Dec 10, 2018 | Signed as free agent | Tyson Ross | — | Detroit Tigers | Detroit Tigers signed free agent RHP Tyson Ross. |
| Dec 10, 2018 | Signed as free agent | Johnfi Liquet | — | Kansas City Royals | Kansas City Royals signed free agent LHP Johnfi Liquet to a minor league contract. |
| Dec 10, 2018 | Signed as free agent | Jeffry Reynoso | — | Kansas City Royals | Kansas City Royals signed free agent RHP Jeffry Reynoso to a minor league contract. |
| Dec 9, 2018 | Signed as free agent | Ryan Goins | — | Chicago White Sox | Chicago White Sox signed free agent 2B Ryan Goins to a minor league contract and invited him to spring training. |
| Dec 8, 2018 | Signed as free agent | Willy Ortiz | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Willy Ortiz to a minor league contract and invited him to spring training. |
| Dec 7, 2018 | Signed as free agent | Patrick Corbin | — | Washington Nationals | Washington Nationals signed free agent LHP Patrick Corbin. |
| Dec 7, 2018 | Signed as free agent | Garrett Richards | — | San Diego Padres | San Diego Padres signed free agent RHP Garrett Richards. |
| Dec 7, 2018 | Signed as free agent | Adony Mejia | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Adony Mejia to a minor league contract. |
| Dec 7, 2018 | Signed as free agent | Moises Rodriguez | — | Texas Rangers | Texas Rangers signed free agent RHP Moises Rodriguez to a minor league contract. |
| Dec 7, 2018 | Signed as free agent | Hector Lopez | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Hector Lopez to a minor league contract. |
| Dec 6, 2018 | Signed as free agent | Ronald Torreyes | — | Minnesota Twins | Minnesota Twins signed free agent Ronald Torreyes. |
| Dec 6, 2018 | Signed as free agent | Robinson Chirinos | — | Houston Astros | Houston Astros signed free agent C Robinson Chirinos. |
| Dec 6, 2018 | Signed as free agent | Nathan Eovaldi | — | Boston Red Sox | Boston Red Sox signed free agent RHP Nathan Eovaldi. |
| Dec 6, 2018 | Signed as free agent | Jonathan Schoop | — | Minnesota Twins | Minnesota Twins signed free agent 2B Jonathan Schoop. |
| Dec 6, 2018 | Trade | Luis García | Philadelphia Phillies | Los Angeles Angels | Philadelphia Phillies traded RHP Luis Garcia to Los Angeles Angels for LHP Jose Alvarez. |
| Dec 6, 2018 | Signed as free agent | Pat Cantwell | — | Toronto Blue Jays | Toronto Blue Jays signed free agent C Patrick Cantwell to a minor league contract and invited him to spring training. |
| Dec 6, 2018 | Signed as free agent | Martin Figueroa | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C Martin Figueroa to a minor league contract. |
| Dec 5, 2018 | Signed as free agent | Louis Coleman | — | Detroit Tigers | Detroit Tigers signed free agent RHP Louis Coleman to a minor league contract and invited him to spring training. |
| Dec 5, 2018 | Signed as free agent | Kade Scivicque | — | Detroit Tigers | Detroit Tigers signed free agent C Kade Scivicque to a minor league contract and invited him to spring training. |
| Dec 5, 2018 | Signed as free agent | Bobby Wilson | — | Detroit Tigers | Detroit Tigers signed free agent C Bobby Wilson to a minor league contract and invited him to spring training. |
| Dec 5, 2018 | Signed as free agent | Kody Eaves | — | Detroit Tigers | Detroit Tigers signed free agent 3B Kody Eaves to a minor league contract and invited him to spring training. |
| Dec 5, 2018 | Trade | Luke Weaver | St. Louis Cardinals | Arizona Diamondbacks | Arizona Diamondbacks traded 1B Paul Goldschmidt to St. Louis Cardinals for C Carson Kelly, RHP Luke Weaver, 2B Andy Young and Future Considerations. |
| Dec 5, 2018 | Signed as free agent | Chris Owings | — | Kansas City Royals | Kansas City Royals signed free agent 2B Chris Owings. |
| Dec 5, 2018 | Signed as free agent | Kyle Wren | — | Cincinnati Reds | Cincinnati Reds signed free agent LF Kyle Wren to a minor league contract and invited him to spring training. |
| Dec 5, 2018 | Signed as free agent | Andrés Blanco | — | Atlanta Braves | Atlanta Braves signed free agent 3B Andres Blanco to a minor league contract and invited him to spring training. |
| Dec 4, 2018 | Signed as free agent | Matt Moore | — | Detroit Tigers | Detroit Tigers signed free agent LHP Matt Moore. |
| Dec 4, 2018 | Signed as free agent | Merrill Kelly | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Merrill Kelly. |
| Dec 4, 2018 | Signed as free agent | Andrés Machado | — | Kansas City Royals | Kansas City Royals signed free agent RHP Andres Machado to a minor league contract and invited him to spring training. |
| Dec 4, 2018 | Signed as free agent | Forrest Snow | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Forrest Snow to a minor league contract and invited him to spring training. |
| Dec 4, 2018 | Signed as free agent | Chi Chi González | — | Colorado Rockies | Colorado Rockies signed free agent RHP Chi Chi Gonzalez to a minor league contract and invited him to spring training. |
| Dec 3, 2018 | Signed as free agent | Pedro Álvarez | — | Miami Marlins | Miami Marlins signed free agent 1B Pedro Alvarez to a minor league contract and invited him to spring training. |
| Dec 3, 2018 | Signed as free agent | R.J. Alvarez | — | Miami Marlins | Miami Marlins signed free agent RHP R.J. Alvarez to a minor league contract and invited him to spring training. |
| Dec 3, 2018 | Signed as free agent | Jon Berti | — | Miami Marlins | Miami Marlins signed free agent 3B Jon Berti to a minor league contract and invited him to spring training. |
| Dec 3, 2018 | Signed as free agent | Bryan Holaday | — | Miami Marlins | Miami Marlins signed free agent C Bryan Holaday to a minor league contract and invited him to spring training. |
| Dec 3, 2018 | Signed as free agent | Gabriel Guerrero | — | Miami Marlins | Miami Marlins signed free agent RF Gabriel Guerrero to a minor league contract and invited him to spring training. |
| Dec 3, 2018 | Signed as free agent | Mike Kickham | — | Miami Marlins | Miami Marlins signed free agent LHP Mike Kickham to a minor league contract and invited him to spring training. |
| Dec 3, 2018 | Signed as free agent | Dixon Machado | — | Miami Marlins | Miami Marlins signed free agent SS Dixon Machado to a minor league contract and invited him to spring training. |
| Dec 3, 2018 | Signed as free agent | Deven Marrero | — | Miami Marlins | Miami Marlins signed free agent 3B Deven Marrero to a minor league contract and invited him to spring training. |
| Dec 3, 2018 | Signed as free agent | Brian Moran | — | Miami Marlins | Miami Marlins signed free agent LHP Brian Moran to a minor league contract and invited him to spring training. |
| Dec 3, 2018 | Signed as free agent | Harold Ramírez | — | Miami Marlins | Miami Marlins signed free agent RF Harold Ramirez to a minor league contract and invited him to spring training. |
| Dec 3, 2018 | Signed as free agent | Rodrigo Vigil | — | Miami Marlins | Miami Marlins signed free agent C Rodrigo Vigil to a minor league contract and invited him to spring training. |
| Dec 3, 2018 | Trade | Robinson Canó | Seattle Mariners | New York Mets | Seattle Mariners traded 2B Robinson Cano, RHP Edwin Diaz and cash to New York Mets for RF Jay Bruce, RHP Anthony Swarzak, RHP Gerson Bautista, CF Jarred Kelenic and Justin Dunn. |
| Dec 3, 2018 | Trade | James Pazos | Seattle Mariners | Philadelphia Phillies | Seattle Mariners traded SS Jean Segura, RHP Juan Nicasio and LHP James Pazos to Philadelphia Phillies for 1B Carlos Santana and SS J.P. Crawford. |
| Dec 3, 2018 | Signed as free agent | Sergio Umana | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Sergio Umana to a minor league contract. |
| Dec 2, 2018 | Signed as free agent | Christian Colón | — | Cincinnati Reds | Cincinnati Reds signed free agent 2B Christian Colon to a minor league contract and invited him to spring training. |
| Dec 1, 2018 | Signed as free agent | James Hoyt | — | Cleveland Guardians | Cleveland Indians signed free agent RHP James Hoyt to a minor league contract and invited him to spring training. |
| Dec 1, 2018 | Signed as free agent | Josh D. Smith | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Josh D. Smith to a minor league contract and invited him to spring training. |
| Dec 1, 2018 | Signed as free agent | Trayce Thompson | — | Cleveland Guardians | Cleveland Indians signed free agent RF Trayce Thompson to a minor league contract and invited him to spring training. |
| Dec 1, 2018 | Trade | Wilkin Ramos | Athletics | Pittsburgh Pirates | Oakland Athletics traded RHP Wilkin Ramos to Pittsburgh Pirates. |
| Dec 1, 2018 | Signed as free agent | Manuel Heredia | — | Chicago Cubs | Chicago Cubs signed free agent RHP Manuel Heredia to a minor league contract. |
| Dec 1, 2018 | Signed as free agent | Juan Graterol | — | Cincinnati Reds | Cincinnati Reds signed free agent C Juan Graterol to a minor league contract and invited him to spring training. |
| Dec 1, 2018 | Signed as free agent | Aristides Aquino | — | Cincinnati Reds | Cincinnati Reds signed free agent RF Aristides Aquino to a minor league contract and invited him to spring training. |
| Dec 1, 2018 | Signed as free agent | Jordan Patterson | — | Cincinnati Reds | Cincinnati Reds signed free agent RF Jordan Patterson to a minor league contract and invited him to spring training. |
| Dec 1, 2018 | Signed as free agent | Jeyner Baez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Jeyner Baez to a minor league contract. |
| Nov 30, 2018 | Trade | Alex Colomé | Seattle Mariners | Chicago White Sox | Seattle Mariners traded RHP Alex Colome to Chicago White Sox for C Omar Narvaez. |
| Nov 30, 2018 | Signed as free agent | Jesse Chavez | — | Texas Rangers | Texas Rangers signed free agent RHP Jesse Chavez. |
| Nov 30, 2018 | Trade | Yan Gomes | Cleveland Guardians | Washington Nationals | Cleveland Indians traded C Yan Gomes to Washington Nationals for RHP Jefry Rodriguez, RF Daniel Johnson and Player To Be Named Later. |
| Nov 30, 2018 | Signed as free agent | Jhoan Colina | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Jhoan Colina to a minor league contract. |
| Nov 30, 2018 | Signed as free agent | Nomar Rojas | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Nomar Rojas to a minor league contract. |
| Nov 29, 2018 | Trade | Tommy La Stella | Chicago Cubs | Los Angeles Angels | Chicago Cubs traded 2B Tommy La Stella to Los Angeles Angels for Future Considerations. |
| Nov 29, 2018 | Released | Jabari Blash | — | Los Angeles Angels | Los Angeles Angels released RF Jabari Blash. |
| Nov 29, 2018 | Released | Casey Lawrence | — | Seattle Mariners | Seattle Mariners released RHP Casey Lawrence. |
| Nov 29, 2018 | Signed as free agent | Dilson Herrera | — | New York Mets | New York Mets signed free agent 2B Dilson Herrera to a minor league contract and invited him to spring training. |
| Nov 29, 2018 | Signed as free agent | Josh Lucas | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Josh Lucas to a minor league contract and invited him to spring training. |
| Nov 29, 2018 | Signed as free agent | Samuel Cruz | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Samuel Cruz to a minor league contract. |
| Nov 29, 2018 | Signed as free agent | Erick Brito | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Erick Brito to a minor league contract. |
| Nov 29, 2018 | Signed as free agent | Peter Mooney | — | Colorado Rockies | Colorado Rockies signed free agent SS Peter Mooney to a minor league contract and invited him to spring training. |
| Nov 28, 2018 | Trade | Ronald Torreyes | New York Yankees | Chicago Cubs | New York Yankees traded 2B Ronald Torreyes to Chicago Cubs for Player To Be Named Later. |
| Nov 28, 2018 | Trade | Adam McCreery | Atlanta Braves | Los Angeles Dodgers | Atlanta Braves traded LHP Adam McCreery to Los Angeles Dodgers for cash. |
| Nov 28, 2018 | Signed as free agent | Kyle Ryan | — | Chicago Cubs | Chicago Cubs signed free agent Kyle Ryan. |
| Nov 28, 2018 | Trade | Ricardo Sánchez | Atlanta Braves | Seattle Mariners | Atlanta Braves traded LHP Ricardo Sanchez to Seattle Mariners for cash. |
| Nov 28, 2018 | Signed as free agent | Deretd Parra | — | Texas Rangers | Texas Rangers signed free agent RHP Deretd Parra to a minor league contract. |
| Nov 28, 2018 | Signed as free agent | Jose Mendez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Jose Mendez to a minor league contract. |
| Nov 28, 2018 | Signed as free agent | Jorge Gonzalez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Jorge Gonzalez to a minor league contract. |
| Nov 28, 2018 | Signed as free agent | Taylor Grover | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Taylor Grover to a minor league contract. |
| Nov 28, 2018 | Signed as free agent | Tony Renda | — | Boston Red Sox | Boston Red Sox signed free agent 2B Tony Renda to a minor league contract and invited him to spring training. |
| Nov 27, 2018 | Signed as free agent | Lonnie Chisenhall | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Lonnie Chisenhall. |
| Nov 27, 2018 | Signed as free agent | Chris Beck | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Chris Beck to a minor league contract and invited him to spring training. |
| Nov 26, 2018 | Signed as free agent | Rob Refsnyder | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Rob Refsnyder to a minor league contract and invited him to spring training. |
| Nov 26, 2018 | Signed as free agent | Kelby Tomlinson | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent SS Kelby Tomlinson to a minor league contract and invited him to spring training. |
| Nov 26, 2018 | Signed as free agent | Brian McCann | — | Atlanta Braves | Atlanta Braves signed free agent C Brian McCann. |
| Nov 26, 2018 | Signed as free agent | Anthony Bemboom | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Anthony Bemboom to a minor league contract and invited him to spring training. |
| Nov 26, 2018 | Signed as free agent | Ryan Sherriff | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LHP Ryan Sherriff to a minor league contract. |
| Nov 26, 2018 | Released | Alex Meyer | — | Los Angeles Angels | Los Angeles Angels released RHP Alex Meyer. |
| Nov 26, 2018 | Signed as free agent | Josh Donaldson | — | Atlanta Braves | Atlanta Braves signed free agent 3B Josh Donaldson. |
| Nov 26, 2018 | Signed as free agent | Martin Zamora | — | Colorado Rockies | Colorado Rockies signed free agent LHP Martin Zamora to a minor league contract. |
| Nov 26, 2018 | Signed as free agent | Christopher Osorio | — | Colorado Rockies | Colorado Rockies signed free agent RHP Christopher Osorio to a minor league contract. |
| Nov 26, 2018 | Signed as free agent | Miguel Padilla | — | Houston Astros | Houston Astros signed free agent RHP Miguel Padilla to a minor league contract. |
| Nov 26, 2018 | Signed as free agent | Dario Pizzano | — | New York Mets | New York Mets signed free agent LF Dario Pizzano to a minor league contract. |
| Nov 26, 2018 | Signed as free agent | Roberto Gómez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Roberto Gomez to a minor league contract and invited him to spring training. |
| Nov 23, 2018 | Signed as free agent | Victor Lopez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Victor Lopez to a minor league contract. |
| Nov 23, 2018 | Signed as free agent | Luis De Leon | — | Detroit Tigers | Detroit Tigers signed free agent RHP Luis De Leon to a minor league contract. |
| Nov 23, 2018 | Signed as free agent | Yonathan Gomez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Yonathan Gomez to a minor league contract. |
| Nov 22, 2018 | Signed as free agent | Jesus Bolivar | — | Detroit Tigers | Detroit Tigers signed free agent OF Jesus Bolivar to a minor league contract. |
| Nov 22, 2018 | Signed as free agent | Jose Rivas | — | Detroit Tigers | Detroit Tigers signed free agent RHP Jose Rivas to a minor league contract. |
| Nov 22, 2018 | Signed as free agent | Pedro Florimón | — | Atlanta Braves | Atlanta Braves signed free agent SS Pedro Florimon to a minor league contract and invited him to spring training. |
| Nov 21, 2018 | Trade | Tim Locastro | Los Angeles Dodgers | New York Yankees | Los Angeles Dodgers traded CF Tim Locastro to New York Yankees for cash and RHP Drew Finley. |
| Nov 21, 2018 | Trade | Tyler Stevens | Los Angeles Angels | Miami Marlins | Miami Marlins traded LHP Dillon Peters to Los Angeles Angels for RHP Tyler Stevens. |
| Nov 21, 2018 | Released | José Miguel Fernández | — | Los Angeles Angels | Los Angeles Angels released 2B Jose Fernandez. |
| Nov 21, 2018 | Released | Erik Goeddel | — | Los Angeles Dodgers | Los Angeles Dodgers released RHP Erik Goeddel. |
| Nov 21, 2018 | Released | Zac Rosscup | — | Los Angeles Dodgers | Los Angeles Dodgers released LHP Zac Rosscup. |
| Nov 21, 2018 | Released | Cory Spangenberg | — | San Diego Padres | San Diego Padres released 3B Cory Spangenberg. |
| Nov 21, 2018 | Released | Christian Villanueva | — | San Diego Padres | San Diego Padres released 3B Christian Villanueva. |
| Nov 21, 2018 | Signed as free agent | Pedro Acosta | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Pedro Acosta to a minor league contract. |
| Nov 21, 2018 | Signed as free agent | Kyle Crockett | — | Athletics | Oakland Athletics signed free agent LHP Kyle Crockett to a minor league contract and invited him to spring training. |
| Nov 20, 2018 | Signed as free agent | Kurt Suzuki | — | Washington Nationals | Washington Nationals signed free agent C Kurt Suzuki. |
| Nov 20, 2018 | Released | Jenrry Mejia | — | New York Mets | New York Mets released RHP Jenrry Mejia. |
| Nov 20, 2018 | Signed as free agent | Cesar Hipolito | — | Athletics | Oakland Athletics signed free agent SS Cesar Hipolito to a minor league contract. |
| Nov 20, 2018 | Trade | Colten Brewer | San Diego Padres | Boston Red Sox | San Diego Padres traded RHP Colten Brewer to Boston Red Sox for 2B Esteban Quiroz. |
| Nov 20, 2018 | Released | William Cuevas | — | Boston Red Sox | Boston Red Sox released RHP William Cuevas. |
| Nov 20, 2018 | Signed as free agent | Jeff Mathis | — | Texas Rangers | Texas Rangers signed free agent C Jeff Mathis. |
| Nov 20, 2018 | Signed as free agent | Mike Freeman | — | Cleveland Guardians | Cleveland Indians signed free agent SS Mike Freeman to a minor league contract and invited him to spring training. |
| Nov 20, 2018 | Trade | Ignacio Feliz | Cleveland Guardians | San Diego Padres | San Diego Padres traded RHP Walker Lockett to Cleveland Indians for RHP Ignacio Feliz. |
| Nov 20, 2018 | Trade | Jason Vosler | Chicago Cubs | San Diego Padres | San Diego Padres traded RHP Rowan Wick to Chicago Cubs for 3B Jason Vosler. |
| Nov 20, 2018 | Trade | Tanner Anderson | Pittsburgh Pirates | Athletics | Pittsburgh Pirates traded RHP Tanner Anderson to Oakland Athletics for Player To Be Named Later. |
| Nov 20, 2018 | Released | Alan Busenitz | — | Minnesota Twins | Minnesota Twins released RHP Alan Busenitz. |
| Nov 20, 2018 | Released | Tom Koehler | — | Los Angeles Dodgers | Los Angeles Dodgers released RHP Tom Koehler. |
| Nov 20, 2018 | Trade | Nick Anderson | Minnesota Twins | Miami Marlins | Minnesota Twins traded RHP Nick Anderson to Miami Marlins for 3B Brian Schales. |
| Nov 20, 2018 | Trade | Jefry Valdez | Colorado Rockies | New York Yankees | New York Yankees traded RHP Jordan Foley to Colorado Rockies for RHP Jefry Valdez. |
| Nov 20, 2018 | Signed as free agent | Diorys Guerrero | — | St. Louis Cardinals | St. Louis Cardinals signed free agent LHP Diorys Guerrero to a minor league contract. |
| Nov 20, 2018 | Signed as free agent | Jefferson Medina | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Jeffeson Medina to a minor league contract. |
| Nov 20, 2018 | Signed as free agent | Daniel Castro | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent SS Daniel Castro to a minor league contract and invited him to spring training. |
| Nov 20, 2018 | Signed as free agent | Zach Vincej | — | Baltimore Orioles | Baltimore Orioles signed free agent SS Zach Vincej to a minor league contract and invited him to spring training. |
| Nov 20, 2018 | Signed as free agent | Jace Peterson | — | Baltimore Orioles | Baltimore Orioles signed free agent 2B Jace Peterson to a minor league contract and invited him to spring training. |
| Nov 20, 2018 | Signed as free agent | Wilfredo Tovar | — | Los Angeles Angels | Los Angeles Angels signed free agent SS Wilfredo Tovar to a minor league contract and invited him to spring training. |
| Nov 20, 2018 | Signed as free agent | César Puello | — | Los Angeles Angels | Los Angeles Angels signed free agent RF Cesar Puello to a minor league contract and invited him to spring training. |
| Nov 19, 2018 | Trade | Gionti Turner | Cleveland Guardians | Tampa Bay Rays | Tampa Bay Rays traded RHP Chih-Wei Hu to Cleveland Indians for 2B Gionti Turner. |
| Nov 19, 2018 | Signed as free agent | Randy César | — | Minnesota Twins | Minnesota Twins signed free agent 3B Randy Cesar to a minor league contract and invited him to spring training. |
| Nov 19, 2018 | Signed as free agent | Preston Guilmet | — | Minnesota Twins | Minnesota Twins signed free agent RHP Preston Guilmet to a minor league contract and invited him to spring training. |
| Nov 19, 2018 | Signed as free agent | Zack Weiss | — | Minnesota Twins | Minnesota Twins signed free agent RHP Zack Weiss to a minor league contract. |
| Nov 19, 2018 | Trade | Justus Sheffield | New York Yankees | Seattle Mariners | Seattle Mariners traded LHP James Paxton to New York Yankees for LHP Justus Sheffield, RHP Erik Swanson and Dom Thompson-Williams. |
| Nov 19, 2018 | Signed as free agent | Tommy Layne | — | St. Louis Cardinals | St. Louis Cardinals signed free agent LHP Tommy Layne to a minor league contract and invited him to spring training. |
| Nov 19, 2018 | Signed as free agent | Hunter Cervenka | — | St. Louis Cardinals | St. Louis Cardinals signed free agent LHP Hunter Cervenka to a minor league contract and invited him to spring training. |
| Nov 19, 2018 | Signed as free agent | Mike Hauschild | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Mike Hauschild to a minor league contract and invited him to spring training. |
| Nov 19, 2018 | Signed as free agent | Williams Pérez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Williams Perez to a minor league contract and invited him to spring training. |
| Nov 19, 2018 | Signed as free agent | Harold Arauz | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Harold Arauz to a minor league contract. |
| Nov 19, 2018 | Signed as free agent | Joe Hudson | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C Joe Hudson to a minor league contract and invited him to spring training. |
| Nov 19, 2018 | Signed as free agent | Brett Nicholas | — | Colorado Rockies | Colorado Rockies signed free agent C Brett Nicholas to a minor league contract. |
| Nov 19, 2018 | Signed as free agent | Ryan LaMarre | — | Atlanta Braves | Atlanta Braves signed free agent OF Ryan LaMarre to a minor league contract and invited him to spring training. |
| Nov 19, 2018 | Signed as free agent | Dustin Garneau | — | Los Angeles Angels | Los Angeles Angels signed free agent C Dustin Garneau to a minor league contract and invited him to spring training. |
| Nov 18, 2018 | Signed as free agent | Rafael Ortega | — | Atlanta Braves | Atlanta Braves signed free agent LF Rafael Ortega to a minor league contract and invited him to spring training. |
| Nov 17, 2018 | Trade | Trent Thornton | Houston Astros | Toronto Blue Jays | Houston Astros traded RHP Trent Thornton to Toronto Blue Jays for SS Aledmys Diaz. |
| Nov 17, 2018 | Signed as free agent | Peter Bourjos | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Peter Bourjos to a minor league contract and invited him to spring training. |
| Nov 17, 2018 | Signed as free agent | Matt Skole | — | Chicago White Sox | Chicago White Sox signed free agent 1B Matt Skole to a minor league contract and invited him to spring training. |
| Nov 17, 2018 | Signed as free agent | Christopher Bostick | — | Baltimore Orioles | Baltimore Orioles signed free agent 2B Christopher Bostick to a minor league contract and invited him to spring training. |
| Nov 16, 2018 | Signed as free agent | Steve Pearce | — | Boston Red Sox | Boston Red Sox signed free agent 1B Steve Pearce. |
| Nov 16, 2018 | Signed as free agent | Railin Perez | — | Boston Red Sox | Boston Red Sox signed free agent RHP Railin Perez to a minor league contract. |
| Nov 16, 2018 | Signed as free agent | Camilo Brazoban | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Camilo Brazoban to a minor league contract. |
| Nov 16, 2018 | Signed as free agent | Henderson Alvarez | — | Washington Nationals | Washington Nationals signed free agent RHP Henderson Alvarez to a minor league contract. |
| Nov 16, 2018 | Signed as free agent | Domingo Tapia | — | Boston Red Sox | Boston Red Sox signed free agent RHP Domingo Tapia to a minor league contract and invited him to spring training. |
| Nov 16, 2018 | Signed as free agent | Ashton Goudeau | — | Colorado Rockies | Colorado Rockies signed free agent RHP Ashton Goudeau to a minor league contract. |
| Nov 16, 2018 | Signed as free agent | Kenny Koplove | — | Colorado Rockies | Colorado Rockies signed free agent RHP Kenny Koplove to a minor league contract. |
| Nov 15, 2018 | Signed as free agent | Ryan O'Rourke | — | New York Mets | New York Mets signed free agent LHP Ryan O'Rourke to a minor league contract and invited him to spring training. |
| Nov 15, 2018 | Signed as free agent | R.J. Alaniz | — | Seattle Mariners | Seattle Mariners signed free agent R.J. Alaniz. |
| Nov 14, 2018 | Trade | Jordan Luplow | Pittsburgh Pirates | Cleveland Guardians | Pittsburgh Pirates traded RF Jordan Luplow and SS Max Moroff to Cleveland Indians for RHP Dante Mendoza, 2B Erik Gonzalez and RHP Tahnaj Thomas. |
| Nov 14, 2018 | Signed as free agent | Jett Bandy | — | Texas Rangers | Texas Rangers signed free agent C Jett Bandy to a minor league contract and invited him to spring training. |
| Nov 14, 2018 | Signed as free agent | Walker Weickel | — | Texas Rangers | Texas Rangers signed free agent RHP Walker Weickel to a minor league contract. |
| Nov 14, 2018 | Signed as free agent | Lester Madden | — | Athletics | Oakland Athletics signed free agent CF Lester Madden to a minor league contract. |
| Nov 13, 2018 | Signed as free agent | Michael Ynoa | — | Kansas City Royals | Kansas City Royals signed free agent RHP Michael Ynoa to a minor league contract and invited him to spring training. |
| Nov 13, 2018 | Signed as free agent | Brandon Brennan | — | Colorado Rockies | Colorado Rockies signed free agent RHP Brandon Brennan to a minor league contract. |
| Nov 13, 2018 | Signed as free agent | Juan Centeno | — | Boston Red Sox | Boston Red Sox signed free agent C Juan Centeno to a minor league contract and invited him to spring training. |
| Nov 13, 2018 | Signed as free agent | Ryan Merritt | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LHP Ryan Merritt to a minor league contract and invited him to spring training. |
| Nov 12, 2018 | Signed as free agent | Angel Perdomo | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Angel Perdomo to a minor league contract and invited him to spring training. |
| Nov 12, 2018 | Signed as free agent | Osiris Santana | — | Kansas City Royals | Kansas City Royals signed free agent RHP Osiris Santana to a minor league contract. |
| Nov 12, 2018 | Signed as free agent | Breiner Carvajal | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Breiner Carvajal to a minor league contract. |
| Nov 12, 2018 | Signed as free agent | Wynton Bernard | — | Chicago Cubs | Chicago Cubs signed free agent CF Wynton Bernard to a minor league contract. |
| Nov 12, 2018 | Signed as free agent | Jake Buchanan | — | Athletics | Oakland Athletics signed free agent RHP Jake Buchanan to a minor league contract and invited him to spring training. |
| Nov 12, 2018 | Signed as free agent | Tyler Heineman | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Tyler Heineman to a minor league contract and invited him to spring training. |
| Nov 12, 2018 | Signed as free agent | Wyatt Mathisen | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 3B Wyatt Mathisen to a minor league contract and invited him to spring training. |
| Nov 12, 2018 | Signed as free agent | Andrew Aplin | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent CF Andrew Aplin to a minor league contract and invited him to spring training. |
| Nov 11, 2018 | Signed as free agent | Kevin Quackenbush | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Kevin Quackenbush to a minor league contract and invited him to spring training. |
| Nov 10, 2018 | Signed as free agent | Sergio Sanchez | — | Colorado Rockies | Colorado Rockies signed free agent RHP Sergio Sanchez to a minor league contract. |
| Nov 10, 2018 | Signed as free agent | Carlos Valero | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Carlos Valero to a minor league contract. |
| Nov 10, 2018 | Signed as free agent | Juan Vargas | — | Colorado Rockies | Colorado Rockies signed free agent RHP Juan Vargas to a minor league contract. |
| Nov 9, 2018 | Signed as free agent | José Cisnero | — | Detroit Tigers | Detroit Tigers signed free agent RHP Jose Cisnero to a minor league contract and invited him to spring training. |
| Nov 9, 2018 | Signed as free agent | Pete Kozma | — | Detroit Tigers | Detroit Tigers signed free agent SS Pete Kozma to a minor league contract and invited him to spring training. |
| Nov 9, 2018 | Signed as free agent | Chace Numata | — | Detroit Tigers | Detroit Tigers signed free agent C Chace Numata to a minor league contract. |
| Nov 9, 2018 | Released | Chase Utley | — | Los Angeles Dodgers | Los Angeles Dodgers released 2B Chase Utley. |
| Nov 9, 2018 | Signed as free agent | Dylan Moore | — | Seattle Mariners | Seattle Mariners signed free agent 3B Dylan Moore. |
| Nov 9, 2018 | Signed as free agent | Ivan Castillo | — | San Diego Padres | San Diego Padres signed free agent 2B Ivan Castillo to a minor league contract. |
| Nov 8, 2018 | Signed as free agent | Jung Ho Kang | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 3B Jung Ho Kang. |
| Nov 8, 2018 | Trade | Jake Fraley | Tampa Bay Rays | Seattle Mariners | Seattle Mariners traded C Mike Zunino, CF Guillermo Heredia and LHP Michael Plassmeyer to Tampa Bay Rays for CF Mallex Smith and Jake Fraley. |
| Nov 8, 2018 | Signed as free agent | Jose Guaramaco | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Jose Guaramaco to a minor league contract. |
| Nov 8, 2018 | Signed as free agent | Juan Herrera | — | Detroit Tigers | Detroit Tigers signed free agent RHP Juan Herrera to a minor league contract. |
| Nov 8, 2018 | Signed as free agent | Yelmison Peralta | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Yelmison Peralta to a minor league contract. |
| Nov 7, 2018 | Signed as free agent | CC Sabathia | — | New York Yankees | New York Yankees signed free agent LHP CC Sabathia. |
| Nov 7, 2018 | Signed as free agent | Derek Escobar | — | Philadelphia Phillies | Philadelphia Phillies signed free agent OF Derek Escobar to a minor league contract. |
| Nov 7, 2018 | Signed as free agent | Darlyn Montero | — | Athletics | Oakland Athletics signed free agent SS Darlyn Montero to a minor league contract. |
| Nov 7, 2018 | Signed as free agent | David Holman | — | Colorado Rockies | Colorado Rockies signed free agent RHP David Holman to a minor league contract. |
| Nov 7, 2018 | Signed as free agent | Ryan Lavarnway | — | New York Yankees | New York Yankees signed free agent C Ryan Lavarnway to a minor league contract and invited him to spring training. |
| Nov 7, 2018 | Signed as free agent | Jake Smolinski | — | Tampa Bay Rays | Tampa Bay Rays signed free agent OF Jake Smolinski to a minor league contract and invited him to spring training. |
| Nov 7, 2018 | Signed as free agent | Gerson Montilla | — | Chicago White Sox | Chicago White Sox signed free agent 3B Gerson Montilla to a minor league contract. |
| Nov 7, 2018 | Signed as free agent | Adderling Ruiz | — | Washington Nationals | Washington Nationals signed free agent C Adderling Ruiz to a minor league contract. |
| Nov 6, 2018 | Signed as free agent | Rafael Escalante | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Rafael Escalante to a minor league contract. |
| Nov 6, 2018 | Signed as free agent | Ronny Sanchez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 3B Ronny Sanchez to a minor league contract. |
| Nov 6, 2018 | Signed as free agent | Abraham Almonte | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Abraham Almonte to a minor league contract and invited him to spring training. |
| Nov 6, 2018 | Signed as free agent | Matthew Mercedes | — | Chicago White Sox | Chicago White Sox signed free agent 1B Matthew Mercedes to a minor league contract. |
| Nov 5, 2018 | Signed as free agent | Franklin Rojas | — | Texas Rangers | Texas Rangers signed free agent SS Franklin Rojas to a minor league contract. |
| Nov 5, 2018 | Signed as free agent | Corban Joseph | — | Baltimore Orioles | Baltimore Orioles signed free agent 2B Corban Joseph to a minor league contract. |
| Nov 5, 2018 | Signed as free agent | Corey Black | — | Chicago Cubs | Chicago Cubs signed free agent RHP Corey Black to a minor league contract. |
| Nov 5, 2018 | Signed as free agent | Jeffrey Baez | — | San Francisco Giants | San Francisco Giants signed free agent RF Jeffrey Baez to a minor league contract. |
| Nov 5, 2018 | Signed as free agent | Santiago Chávez | — | Miami Marlins | Miami Marlins signed free agent C Santiago Chavez to a minor league contract and invited him to spring training. |
| Nov 4, 2018 | Signed as free agent | Alfred Gutierrez | — | San Francisco Giants | San Francisco Giants signed free agent RHP Alfred Gutierrez to a minor league contract. |
| Nov 3, 2018 | Signed as free agent | Trevor Rosenthal | — | Washington Nationals | Washington Nationals signed free agent RHP Trevor Rosenthal. |
| Nov 3, 2018 | Signed as free agent | Bryan Castillo | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Bryan Castillo to a minor league contract. |
| Nov 2, 2018 | Trade | Drew Smyly | Chicago Cubs | Texas Rangers | Chicago Cubs traded Player To Be Named Later and LHP Drew Smyly to Texas Rangers for Player To Be Named Later. |
| Nov 2, 2018 | Signed as free agent | Sean Gilmartin | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Sean Gilmartin to a minor league contract. |
| Nov 2, 2018 | Signed as free agent | Bryan Sanchez | — | Washington Nationals | Washington Nationals signed free agent RHP Bryan Sanchez to a minor league contract. |
| Nov 2, 2018 | Signed as free agent | Derek Vegas | — | Miami Marlins | Miami Marlins signed free agent C Derek Vegas to a minor league contract. |
| Nov 1, 2018 | Trade | Raffy Lopez | San Diego Padres | Atlanta Braves | San Diego Padres traded C Raffy Lopez to Atlanta Braves for cash. |
| Nov 1, 2018 | Trade | Manny Banuelos | Los Angeles Dodgers | Chicago White Sox | Chicago White Sox traded 3B Justin Yurchak to Los Angeles Dodgers for LHP Manny Banuelos. |
| Nov 1, 2018 | Signed as free agent | Sandy Gaston | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Sandy Gaston to a minor league contract. |
| Nov 1, 2018 | Signed as free agent | Edwin Castillo | — | Chicago Cubs | Chicago Cubs signed free agent SS Edwin Castillo to a minor league contract. |
| Nov 1, 2018 | Signed as free agent | Darling Grullon | — | Chicago Cubs | Chicago Cubs signed free agent RHP Darling Grullon to a minor league contract. |
| Nov 1, 2018 | Signed as free agent | Reny Artiles | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Reny Artiles to a minor league contract. |
| Nov 1, 2018 | Signed as free agent | Erasmo Moreno | — | Minnesota Twins | Minnesota Twins signed free agent RHP Erasmo Moreno to a minor league contract. |
| Nov 1, 2018 | Signed as free agent | Orlando Guzman | — | Chicago Cubs | Chicago Cubs signed free agent OF Orlando Guzman to a minor league contract. |
| Oct 31, 2018 | Signed as free agent | Albenis Chango | — | San Francisco Giants | San Francisco Giants signed free agent RHP Albenis Chango to a minor league contract. |
| Oct 31, 2018 | Signed as free agent | Homer Cruz | — | Chicago White Sox | Chicago White Sox signed free agent RHP Homer Cruz to a minor league contract. |
| Oct 31, 2018 | Signed as free agent | Sergio Vargas | — | New York Yankees | New York Yankees signed free agent SS Sergio Vargas to a minor league contract. |
| Oct 31, 2018 | Signed as free agent | Victor Cairo | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Victor Cairo to a minor league contract. |
| Oct 31, 2018 | Signed as free agent | Robel García | — | Chicago Cubs | Chicago Cubs signed free agent SS Robel Garcia to a minor league contract. |
| Oct 30, 2018 | Signed as free agent | Adam Wainwright | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Adam Wainwright. |
| Oct 30, 2018 | Signed as free agent | Winder Garcia | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Winder Garcia to a minor league contract. |
| Oct 30, 2018 | Signed as free agent | Matheus Silva | — | Athletics | Oakland Athletics signed free agent C Matheus Lelis to a minor league contract. |
| Oct 30, 2018 | Signed as free agent | Alcindo Pontes | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Alcindo Pontes to a minor league contract. |
| Oct 30, 2018 | Signed as free agent | Edgar Castro | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Edgar Castro to a minor league contract. |
| Oct 30, 2018 | Signed as free agent | Evan Marshall | — | Chicago White Sox | Chicago White Sox signed free agent RHP Evan Marshall to a minor league contract and invited him to spring training. |
| Oct 30, 2018 | Signed as free agent | Chris Iriart | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 1B Chris Iriart to a minor league contract. |
| Oct 30, 2018 | Signed as free agent | Patrick Kivlehan | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Patrick Kivlehan to a minor league contract and invited him to spring training. |
| Oct 29, 2018 | Signed as free agent | Adrian Hernandez | — | Boston Red Sox | Boston Red Sox signed free agent RHP Adrian Hernandez to a minor league contract. |
| Oct 29, 2018 | Signed as free agent | Julio Goff | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Julio Goff to a minor league contract. |
| Oct 29, 2018 | Signed as free agent | Ronaldo Guzman | — | Chicago White Sox | Chicago White Sox signed free agent LHP Ronaldo Guzman to a minor league contract. |
| Oct 28, 2018 | Signed as free agent | Moises Barajas | — | Boston Red Sox | Boston Red Sox signed free agent OF Moises Barajas to a minor league contract. |
| Oct 27, 2018 | Signed as free agent | Miguel Marcos | — | St. Louis Cardinals | St. Louis Cardinals signed free agent CF Miguel Marcos to a minor league contract. |
| Oct 27, 2018 | Signed as free agent | Brandon Hernandez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent 3B Brandon Hernandez to a minor league contract. |
| Oct 27, 2018 | Signed as free agent | Oliver Lopez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Oliver Lopez to a minor league contract. |
| Oct 25, 2018 | Signed as free agent | R.C. Orlan | — | Cleveland Guardians | Cleveland Indians signed free agent LHP R.C. Orlan to a minor league contract and invited him to spring training. |
| Oct 25, 2018 | Signed as free agent | Shao-Ching Chiang | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Shao-Ching Chiang to a minor league contract and invited him to spring training. |
| Oct 24, 2018 | Signed as free agent | Jose Mullings | — | San Francisco Giants | San Francisco Giants signed free agent RHP Jose Mullings to a minor league contract. |
| Oct 24, 2018 | Signed as free agent | Robinson Escobar | — | San Francisco Giants | San Francisco Giants signed free agent RHP Robinson Escobar to a minor league contract. |
| Oct 22, 2018 | Signed as free agent | Victor Mesa Jr. | — | Miami Marlins | Miami Marlins signed free agent OF Victor Mesa Jr. to a minor league contract. |
| Oct 22, 2018 | Signed as free agent | Victor Mesa | — | Miami Marlins | Miami Marlins signed free agent OF Victor Victor Mesa to a minor league contract. |
| Oct 22, 2018 | Signed as free agent | Christopher Collado | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Christopher Collado to a minor league contract. |
| Oct 22, 2018 | Signed as free agent | Carlos Cuevas | — | San Francisco Giants | San Francisco Giants signed free agent OF Carlos Cuevas to a minor league contract. |
| Oct 22, 2018 | Signed as free agent | Yonathan Pierre | — | Tampa Bay Rays | Tampa Bay Rays signed free agent OF Yonathan Pierre to a minor league contract. |
| Oct 21, 2018 | Signed as free agent | Enoy Jimenez | — | Chicago White Sox | Chicago White Sox signed free agent SS Enoy Jimenez to a minor league contract. |
| Oct 20, 2018 | Signed as free agent | Michael Ozoria | — | St. Louis Cardinals | St. Louis Cardinals signed free agent LHP Michael Ozoria to a minor league contract. |
| Oct 20, 2018 | Signed as free agent | Engels Martinez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Engels Martinez to a minor league contract. |
| Oct 19, 2018 | Signed as free agent | Adrian Gonzalez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Adrian Gonzalez to a minor league contract. |
| Oct 19, 2018 | Signed as free agent | Yordanny Sosa | — | New York Yankees | New York Yankees signed free agent RHP Yordanny Sosa to a minor league contract. |
| Oct 19, 2018 | Signed as free agent | Junior Calderon | — | Kansas City Royals | Kansas City Royals signed free agent 3B Junior Calderon to a minor league contract. |
| Oct 19, 2018 | Signed as free agent | Kevin Solano | — | Atlanta Braves | Atlanta Braves signed free agent RHP Kevin Solano to a minor league contract. |
| Oct 19, 2018 | Signed as free agent | Leonel Hernandez | — | New York Yankees | New York Yankees signed free agent CF Leonel Hernandez to a minor league contract. |
| Oct 19, 2018 | Signed as free agent | Carlos Verdecia | — | New York Yankees | New York Yankees signed free agent SS Carlos Verdecia to a minor league contract. |
| Oct 17, 2018 | Signed as free agent | Luis Florentino | — | Athletics | Oakland Athletics signed free agent RHP Luis Florentino to a minor league contract. |
| Oct 17, 2018 | Signed as free agent | Jose Cairo | — | New York Yankees | New York Yankees signed free agent CF Jose Cairo to a minor league contract. |
| Oct 17, 2018 | Signed as free agent | Juan Gonzalez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Juan Gonzalez to a minor league contract. |
| Oct 17, 2018 | Signed as free agent | Cristian Guzman | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Cristian Guzman to a minor league contract. |
| Oct 16, 2018 | Trade | Adonis Giron | Miami Marlins | Houston Astros | Miami Marlins traded RF Adonis Giron and LHP Brayan De Paula to Houston Astros for Future Considerations. |
| Oct 16, 2018 | Signed as free agent | Gabriel Aguilera | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Gabriel Aguilera to a minor league contract. |
| Oct 16, 2018 | Signed as free agent | Williams Yanez | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Williams Yanez to a minor league contract. |
| Oct 16, 2018 | Signed as free agent | Jose Franco | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Jose Franco to a minor league contract. |
| Oct 15, 2018 | Signed as free agent | Brandom Sanchez | — | New York Yankees | New York Yankees signed free agent LHP Brandom Sanchez to a minor league contract. |
| Oct 15, 2018 | Signed as free agent | Kelvin Espino | — | New York Yankees | New York Yankees signed free agent LF Kelvin Espino to a minor league contract. |
| Oct 15, 2018 | Signed as free agent | Alex Garcia | — | New York Yankees | New York Yankees signed free agent SS Alex Garcia to a minor league contract. |
| Oct 15, 2018 | Signed as free agent | Pedro Santos | — | Athletics | Oakland Athletics signed free agent RHP Pedro Santos to a minor league contract. |
| Oct 15, 2018 | Signed as free agent | Steven Fulgencio | — | New York Yankees | New York Yankees signed free agent RHP Steven Fulgencio to a minor league contract. |
| Oct 15, 2018 | Signed as free agent | Geremias Peguero | — | New York Yankees | New York Yankees signed free agent LHP Geremias Peguero to a minor league contract. |
| Oct 15, 2018 | Signed as free agent | Deurys Marte | — | New York Yankees | New York Yankees signed free agent RHP Deurys Marte to a minor league contract. |
| Oct 13, 2018 | Signed as free agent | Joneivy Polonia | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Joneivy Polonia to a minor league contract. |
| Oct 13, 2018 | Signed as free agent | Miguel Cordones | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Miguel Cordones to a minor league contract. |
| Oct 12, 2018 | Signed as free agent | Wilkerman Chourio | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Wilkerman Chourio to a minor league contract. |
| Oct 12, 2018 | Signed as free agent | Rafael Camacho | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Rafael Camacho to a minor league contract. |
| Oct 12, 2018 | Signed as free agent | Henry Leon | — | Milwaukee Brewers | Milwaukee Brewers signed free agent C Henry Leon to a minor league contract. |
| Oct 12, 2018 | Signed as free agent | Shane Watson | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Shane Watson to a minor league contract and invited him to spring training. |
| Oct 11, 2018 | Signed as free agent | Josue Panacual | — | New York Yankees | New York Yankees signed free agent RHP Josue Panacual to a minor league contract. |
| Oct 11, 2018 | Signed as free agent | Diego Verbel | — | San Francisco Giants | San Francisco Giants signed free agent 2B Diego Verbel to a minor league contract. |
| Oct 11, 2018 | Signed as free agent | Edwin Jimenez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Edwin Jimenez to a minor league contract. |
| Oct 11, 2018 | Signed as free agent | Nelson Marin | — | San Francisco Giants | San Francisco Giants signed free agent SS Nelson Marin to a minor league contract. |
| Oct 11, 2018 | Signed as free agent | Ronnald Rojas | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Ronnald Rojas to a minor league contract. |
| Oct 10, 2018 | Trade | Kyle Barraclough | Miami Marlins | Washington Nationals | Miami Marlins traded RHP Kyle Barraclough to Washington Nationals for Future Considerations. |
| Oct 10, 2018 | Signed as free agent | Danifer Diaz | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Danifer Diaz to a minor league contract. |
| Oct 10, 2018 | Signed as free agent | Yohandry Perez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Yohandry Perez to a minor league contract. |
| Oct 9, 2018 | Signed as free agent | Royber Salinas | — | Atlanta Braves | Atlanta Braves signed free agent RHP Royber Salinas to a minor league contract. |
| Oct 9, 2018 | Signed as free agent | Rafmar Medina | — | Texas Rangers | Texas Rangers signed free agent RHP Rafmar Medina to a minor league contract. |
| Oct 8, 2018 | Signed as free agent | Ismael Aguilar | — | Tampa Bay Rays | Tampa Bay Rays signed free agent OF Ismael Aguilar to a minor league contract. |
| Oct 8, 2018 | Signed as free agent | Andres Castro | — | Washington Nationals | Washington Nationals signed free agent RHP Andres Castro to a minor league contract. |
| Oct 8, 2018 | Signed as free agent | Carlo Reyes | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Carlo Reyes to a minor league contract. |
| Oct 8, 2018 | Signed as free agent | Jesus Balaguer | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jesus Balaguer to a minor league contract. |
| Oct 8, 2018 | Signed as free agent | Josh Smoker | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Josh Smoker to a minor league contract and invited him to spring training. |
| Oct 6, 2018 | Trade | Ryan Lillie | Miami Marlins | Cincinnati Reds | Miami Marlins traded RHP Ryan Lillie to Cincinnati Reds for Future Considerations. |
| Oct 6, 2018 | Signed as free agent | Osvanni Gutierrez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Osvanni Gutierrez to a minor league contract. |
| Oct 5, 2018 | Trade | Julian Merryweather | Cleveland Guardians | Toronto Blue Jays | Cleveland Indians traded RHP Julian Merryweather to Toronto Blue Jays. |
| Oct 5, 2018 | Signed as free agent | Ricardo German | — | Minnesota Twins | Minnesota Twins signed free agent CF Ricardo German to a minor league contract. |
| Oct 5, 2018 | Signed as free agent | Miguel Angel Vallejo | — | Minnesota Twins | Minnesota Twins signed free agent RF Miguel Angel Vallejo to a minor league contract. |
| Oct 3, 2018 | Signed as free agent | Denzel Bryson | — | Atlanta Braves | Atlanta Braves signed free agent C Denzel Bryson to a minor league contract. |
| Oct 3, 2018 | Signed as free agent | Dangiover Gonzalez | — | Athletics | Oakland Athletics signed free agent RHP Dangiover Gonzalez to a minor league contract. |
| Oct 3, 2018 | Signed as free agent | Aneudy Cortorreal | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Aneudy Cortorreal to a minor league contract. |
| Oct 3, 2018 | Signed as free agent | Fernando Chacon | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Fernando Chacon to a minor league contract. |
| Oct 2, 2018 | Signed as free agent | Felipe Mezquita | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Felipe Mezquita to a minor league contract. |
| Oct 2, 2018 | Signed as free agent | Luis Hernandez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Luis Hernandez to a minor league contract. |
| Oct 2, 2018 | Signed as free agent | Nilo Rijo | — | Boston Red Sox | Boston Red Sox signed free agent SS Nilo Rijo to a minor league contract. |
| Oct 2, 2018 | Signed as free agent | Luis Ortiz | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Luis Ortiz to a minor league contract. |
| Oct 1, 2018 | Signed as free agent | Alexander Suarez | — | San Francisco Giants | San Francisco Giants signed free agent CF Alexander Suarez to a minor league contract. |
| Sep 29, 2018 | Signed as free agent | Brailin Rodriguez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Brailin Rodriguez to a minor league contract. |
| Sep 29, 2018 | Signed as free agent | Rodery Pichardo | — | Colorado Rockies | Colorado Rockies signed free agent RHP Rodery Pichardo to a minor league contract. |
| Sep 29, 2018 | Signed as free agent | Angeudis Santos | — | Boston Red Sox | Boston Red Sox signed free agent IF Angeudis Santos to a minor league contract. |
| Sep 29, 2018 | Signed as free agent | Estiven Encarnacion | — | San Francisco Giants | San Francisco Giants signed free agent RHP Estiven Encarnacion to a minor league contract. |
| Sep 29, 2018 | Signed as free agent | Juan Chourio | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Juan Chourio to a minor league contract. |
| Sep 28, 2018 | Signed as free agent | Ruben Benavides | — | Chicago White Sox | Chicago White Sox signed free agent C Ruben Benavides to a minor league contract. |
| Sep 28, 2018 | Signed as free agent | Parker Markel | — | Seattle Mariners | Seattle Mariners signed free agent RHP Parker Markel to a minor league contract. |
| Sep 27, 2018 | Signed as free agent | Cristofer Adames | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Cristofer Adames to a minor league contract. |
| Sep 26, 2018 | Signed as free agent | Wilmis Castro | — | New York Mets | New York Mets signed free agent 3B Wilmis Castro to a minor league contract. |
| Sep 26, 2018 | Signed as free agent | Johan Otanez | — | Washington Nationals | Washington Nationals signed free agent RHP Johan Otanez to a minor league contract. |
| Sep 25, 2018 | Signed as free agent | Kevin Infante | — | Baltimore Orioles | Baltimore Orioles signed free agent CF Kevin Infante to a minor league contract. |
| Sep 25, 2018 | Signed as free agent | Edgardo Henriquez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Edgardo Henriquez to a minor league contract. |
| Sep 24, 2018 | Signed as free agent | Felix Polanco | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Felix Polanco to a minor league contract. |
| Sep 24, 2018 | Signed as free agent | Moises Castellanos | — | Boston Red Sox | Boston Red Sox signed free agent RHP Moises Castellanos to a minor league contract. |
| Sep 22, 2018 | Signed as free agent | Joel Valdez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Joel Valdez to a minor league contract. |
| Sep 19, 2018 | Trade | Logan Shore | Athletics | Detroit Tigers | Oakland Athletics traded RHP Logan Shore to Detroit Tigers. |
| Sep 18, 2018 | Signed as free agent | Miguel Gil | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Miguel Gil to a minor league contract. |
| Sep 17, 2018 | Signed as free agent | Jose Quintana | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Jose Quintana to a minor league contract. |
| Sep 15, 2018 | Signed as free agent | Edinson Mejia | — | Milwaukee Brewers | Milwaukee Brewers signed free agent P Edinson Mejia to a minor league contract. |
| Sep 14, 2018 | Signed as free agent | Rafael Castillo | — | Detroit Tigers | Detroit Tigers signed free agent IF Rafael Castillo to a minor league contract. |
| Sep 14, 2018 | Signed as free agent | Hermes Astudillo | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Hermes Astudillo to a minor league contract. |
| Sep 13, 2018 | Signed as free agent | Frank Astacio | — | Boston Red Sox | Boston Red Sox signed free agent IF Frank Astacio to a minor league contract. |
| Sep 13, 2018 | Signed as free agent | Freddy Guilamo | — | Houston Astros | Houston Astros signed free agent C Freddy Guilamo to a minor league contract. |
| Sep 13, 2018 | Signed as free agent | Onil Lozano | — | New York Mets | New York Mets signed free agent RHP Onil Lozano to a minor league contract. |
| Sep 13, 2018 | Signed as free agent | Sebastian Burciaga | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 2B Sebastian Burciaga to a minor league contract. |
| Sep 13, 2018 | Signed as free agent | Argeny Ortiz | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Argeny Ortiz to a minor league contract. |
| Sep 10, 2018 | Released | Eric Stout | — | Kansas City Royals | Kansas City Royals released LHP Eric Stout. |
| Sep 10, 2018 | Signed as free agent | Edgar Isea | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Edgar Isea to a minor league contract. |
| Sep 10, 2018 | Signed as free agent | Luis Mendoza | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Luis Mendoza to a minor league contract. |
| Sep 10, 2018 | Signed as free agent | Jheyson Perez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jheyson Perez to a minor league contract. |
| Sep 10, 2018 | Signed as free agent | Gabriel Tapia | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Gabriel Tapia to a minor league contract. |
| Sep 7, 2018 | Released | Josh Smoker | — | Detroit Tigers | Detroit Tigers released LHP Josh Smoker. |
| Sep 7, 2018 | Signed as free agent | Heisell Baro | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Heisell Baro to a minor league contract. |
| Sep 7, 2018 | Signed as free agent | Marlon Cairo | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Marlon Cairo to a minor league contract. |
| Sep 6, 2018 | Trade | Patrick Kivlehan | New York Mets | Arizona Diamondbacks | New York Mets traded RF Patrick Kivlehan to Arizona Diamondbacks for cash. |
| Sep 6, 2018 | Signed as free agent | Darwin Arainamo | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Darwin Arainamo to a minor league contract. |
| Sep 6, 2018 | Signed as free agent | Nyan Hernandez | — | Texas Rangers | Texas Rangers signed free agent LHP Nyan Hernandez to a minor league contract. |
| Sep 6, 2018 | Signed as free agent | Roldany Reinoso | — | Texas Rangers | Texas Rangers signed free agent C Roldany Reinoso to a minor league contract. |
| Sep 6, 2018 | Signed as free agent | John Mejia | — | Texas Rangers | Texas Rangers signed free agent SS John Mejia to a minor league contract. |
| Sep 6, 2018 | Signed as free agent | Jorge Ramirez | — | Texas Rangers | Texas Rangers signed free agent LHP Jorge Ramirez to a minor league contract. |
| Sep 6, 2018 | Signed as free agent | Wilson Castillo | — | Texas Rangers | Texas Rangers signed free agent RHP Wilson Castillo to a minor league contract. |
| Sep 5, 2018 | Released | Craig Gentry | — | Baltimore Orioles | Baltimore Orioles released RF Craig Gentry. |
| Sep 5, 2018 | Released | Adam Liberatore | — | Los Angeles Dodgers | Los Angeles Dodgers released LHP Adam Liberatore. |
| Sep 5, 2018 | Signed as free agent | Denverick Martines | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Denverick Martines to a minor league contract. |
| Sep 5, 2018 | Signed as free agent | Audry Lugo | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Audry Lugo to a minor league contract. |
| Sep 4, 2018 | Released | Nolan Fontana | — | Los Angeles Angels | Los Angeles Angels released SS Nolan Fontana. |
| Sep 4, 2018 | Signed as free agent | Juan Mercedes | — | Chicago White Sox | Chicago White Sox signed free agent OF Juan Mercedes to a minor league contract. |
| Sep 4, 2018 | Signed as free agent | Willi Fana | — | Los Angeles Angels | Los Angeles Angels signed free agent CF Willi Fana to a minor league contract. |
| Sep 3, 2018 | Trade | Aaron Brooks | Milwaukee Brewers | Athletics | Milwaukee Brewers traded RHP Aaron Brooks to Oakland Athletics for cash. |
| Sep 3, 2018 | Signed as free agent | Juan Daniel Encarnacion | — | Boston Red Sox | Boston Red Sox signed free agent RHP Juan Daniel Encarnacion to a minor league contract. |
| Sep 2, 2018 | Trade | Tyler Watson | Atlanta Braves | Chicago White Sox | Atlanta Braves traded LHP Tyler Watson to Chicago White Sox. |
| Sep 2, 2018 | Trade | Preston Tucker | Cincinnati Reds | Atlanta Braves | Cincinnati Reds traded LF Preston Tucker to Atlanta Braves for cash. |
| Sep 1, 2018 | Released | Zack Weiss | — | Cincinnati Reds | Cincinnati Reds released RHP Zack Weiss. |
| Sep 1, 2018 | Released | Sean Rodríguez | — | Pittsburgh Pirates | Pittsburgh Pirates released 2B Sean Rodriguez. |
| Sep 1, 2018 | Signed as free agent | Jaime García | — | Chicago Cubs | Chicago Cubs signed free agent LHP Jaime Garcia to a minor league contract. |
| Sep 1, 2018 | Signed as free agent | Jorge Jimenez | — | Los Angeles Angels | Los Angeles Angels signed free agent SS Jorge Jimenez to a minor league contract. |
| Sep 1, 2018 | Signed as free agent | Victor Herrera | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Victor Herrera to a minor league contract. |
| Aug 31, 2018 | Trade | Juan De Paula | New York Yankees | San Francisco Giants | San Francisco Giants traded RF Andrew McCutchen and cash to New York Yankees for 2B Abiatal Avelino and RHP Juan De Paula. |
| Aug 31, 2018 | Trade | Jerry Vasto | Colorado Rockies | Kansas City Royals | Kansas City Royals traded C Drew Butera and cash to Colorado Rockies for LHP Jerry Vasto. |
| Aug 31, 2018 | Trade | Ryan Madson | Washington Nationals | Los Angeles Dodgers | Washington Nationals traded RHP Ryan Madson to Los Angeles Dodgers for RHP Andrew Istler. |
| Aug 31, 2018 | Trade | Cory Gearrin | Texas Rangers | Athletics | Texas Rangers traded RHP Cory Gearrin to Oakland Athletics for RHP Abdiel Mendoza and RHP Teodoro Ortega. |
| Aug 31, 2018 | Trade | Bryan Connell | Milwaukee Brewers | Chicago White Sox | Chicago White Sox traded LHP Xavier Cedeno to Milwaukee Brewers for LF Bryan Connell and RHP Johan Dominguez. |
| Aug 31, 2018 | Signed as free agent | Emilio Bonifácio | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 2B Emilio Bonifacio to a minor league contract. |
| Aug 31, 2018 | Trade | Jesus Valdez | Los Angeles Dodgers | Pittsburgh Pirates | Pittsburgh Pirates traded 3B David Freese to Los Angeles Dodgers for SS Jesus Valdez. |
| Aug 31, 2018 | Trade | Josh Donaldson | Toronto Blue Jays | Cleveland Guardians | Toronto Blue Jays traded 3B Josh Donaldson to Cleveland Indians for Player To Be Named Later. |
| Aug 31, 2018 | Trade | Adeiny Hechavarría | Pittsburgh Pirates | New York Yankees | Pittsburgh Pirates traded cash and SS Adeiny Hechavarria to New York Yankees for Future Considerations. |
| Aug 31, 2018 | Trade | Curtis Granderson | Toronto Blue Jays | Milwaukee Brewers | Toronto Blue Jays traded LF Curtis Granderson to Milwaukee Brewers for CF Demi Orimoloye. |
| Aug 31, 2018 | Trade | Gio Gonzalez | Washington Nationals | Milwaukee Brewers | Washington Nationals traded Future Considerations and LHP Gio Gonzalez to Milwaukee Brewers for 3B Gilbert Lara and 1B KJ Harrison. |
| Aug 31, 2018 | Signed as free agent | Shairon Bennett | — | Atlanta Braves | Atlanta Braves signed free agent RHP Shairon Bennett to a minor league contract. |
| Aug 31, 2018 | Signed as free agent | Jose Baez | — | Cleveland Guardians | Cleveland Indians signed free agent SS Jose Baez to a minor league contract. |
| Aug 31, 2018 | Signed as free agent | Jose Pineda | — | Cincinnati Reds | Cincinnati Reds signed free agent LF Jose Pineda to a minor league contract. |
| Aug 31, 2018 | Signed as free agent | Elvis Jerez | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Elvis Jerez to a minor league contract. |
| Aug 31, 2018 | Signed as free agent | Henyer Gomez | — | Cleveland Guardians | Cleveland Indians signed free agent SS Henyer Gomez to a minor league contract. |
| Aug 31, 2018 | Signed as free agent | YongKang Kou | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 3B YongKang Kou to a minor league contract. |
| Aug 31, 2018 | Signed as free agent | Ronald Carreno | — | Los Angeles Angels | Los Angeles Angels signed free agent C Ronald Carreno to a minor league contract. |
| Aug 31, 2018 | Signed as free agent | Jian Yi | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Jian Yi to a minor league contract. |
| Aug 30, 2018 | Trade | Kristopher Negrón | Arizona Diamondbacks | Seattle Mariners | Arizona Diamondbacks traded 2B Kristopher Negron to Seattle Mariners for cash. |
| Aug 30, 2018 | Trade | Chris Gimenez | Chicago Cubs | Minnesota Twins | Minnesota Twins traded C Bobby Wilson to Chicago Cubs for C Chris Gimenez and Player To Be Named Later. |
| Aug 30, 2018 | Trade | Chris Stewart | Atlanta Braves | Arizona Diamondbacks | Atlanta Braves traded C Chris Stewart to Arizona Diamondbacks for cash. |
| Aug 30, 2018 | Signed as free agent | Jesus Parra | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 3B Jesus Parra to a minor league contract. |
| Aug 30, 2018 | Signed as free agent | Kevin Gomez | — | New York Mets | New York Mets signed free agent RHP Kevin Gomez to a minor league contract. |
| Aug 29, 2018 | Trade | Lucas Duda | Kansas City Royals | Atlanta Braves | Kansas City Royals traded 1B Lucas Duda to Atlanta Braves for cash. |
| Aug 29, 2018 | Released | Jaime García | — | Toronto Blue Jays | Toronto Blue Jays released LHP Jaime Garcia. |
| Aug 29, 2018 | Signed as free agent | Hamilton Andujar | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Hamilton Andujar to a minor league contract. |
| Aug 29, 2018 | Signed as free agent | Jean Marcelino | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jean Marcelino to a minor league contract. |
| Aug 29, 2018 | Signed as free agent | Jesus Marrero | — | Boston Red Sox | Boston Red Sox signed free agent OF Jesus Marrero to a minor league contract. |
| Aug 29, 2018 | Signed as free agent | Alexander Ramirez | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Alexander Ramirez to a minor league contract. |
| Aug 29, 2018 | Signed as free agent | Warren Saunders | — | New York Mets | New York Mets signed free agent SS Warren Saunders to a minor league contract. |
| Aug 29, 2018 | Signed as free agent | Cristopher Barete | — | Tampa Bay Rays | Tampa Bay Rays signed free agent CF Cristopher Barete to a minor league contract. |
| Aug 29, 2018 | Signed as free agent | Julio Ortiz | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Julio Ortiz to a minor league contract. |
| Aug 28, 2018 | Trade | José Bautista | New York Mets | Philadelphia Phillies | New York Mets traded RF Jose Bautista to Philadelphia Phillies for Player To Be Named Later. |
| Aug 28, 2018 | Signed as free agent | Carlos Del Rosario | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Carlos Del Rosario to a minor league contract. |
| Aug 28, 2018 | Signed as free agent | Moises Ramirez | — | Baltimore Orioles | Baltimore Orioles signed free agent SS Moises Ramirez to a minor league contract. |
| Aug 28, 2018 | Signed as free agent | Chris Hall | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Chris Hall to a minor league contract. |
| Aug 28, 2018 | Signed as free agent | Carlos Gutierrez | — | Minnesota Twins | Minnesota Twins signed free agent RHP Carlos Gutierrez to a minor league contract. |
| Aug 27, 2018 | Signed as free agent | Zach McAllister | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Zach McAllister to a minor league contract. |
| Aug 27, 2018 | Signed as free agent | Quintin Berry | — | New York Yankees | New York Yankees signed free agent RF Quintin Berry to a minor league contract. |
| Aug 27, 2018 | Trade | Jack Zoellner | Philadelphia Phillies | Baltimore Orioles | Philadelphia Phillies traded 1B Jack Zoellner to Baltimore Orioles for Future Considerations. |
| Aug 27, 2018 | Signed as free agent | Alex Phillips | — | Minnesota Twins | Minnesota Twins signed free agent RHP Alex Phillips to a minor league contract. |
| Aug 27, 2018 | Signed as free agent | Bruce Wang | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Bruce Wang to a minor league contract. |
| Aug 26, 2018 | Released | Ryan Sherriff | — | St. Louis Cardinals | St. Louis Cardinals released LHP Ryan Sherriff. |
| Aug 26, 2018 | Signed as free agent | Darryl Collins | — | Kansas City Royals | Kansas City Royals signed free agent OF Darryl Collins to a minor league contract. |
| Aug 26, 2018 | Signed as free agent | Lidio Belizaire | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Lidio Belizaire to a minor league contract. |
| Aug 26, 2018 | Signed as free agent | Luis Tejeda | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent SS Luis Tejeda to a minor league contract. |
| Aug 25, 2018 | Signed as free agent | Gerson Molina | — | New York Mets | New York Mets signed free agent OF Gerson Molina to a minor league contract. |
| Aug 25, 2018 | Signed as free agent | Omar Maldonado | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Omar Maldonado to a minor league contract. |
| Aug 24, 2018 | Signed as free agent | Shumpei Yoshikawa | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Shumpei Yoshikawa to a minor league contract. |
| Aug 24, 2018 | Signed as free agent | Woo Young Jin | — | Kansas City Royals | Kansas City Royals signed free agent RHP Woo-Young Jin to a minor league contract. |
| Aug 24, 2018 | Signed as free agent | Hyun-il Choi | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Hyun-il Choi to a minor league contract. |
| Aug 24, 2018 | Signed as free agent | Victor Rodriguez | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Victor Rodriguez to a minor league contract. |
| Aug 24, 2018 | Signed as free agent | Carlos Canache | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Carlos Canache to a minor league contract. |
| Aug 24, 2018 | Signed as free agent | Luis Castillo | — | San Francisco Giants | San Francisco Giants signed free agent LHP Luis Castillo to a minor league contract. |
| Aug 23, 2018 | Signed as free agent | William Lugo | — | New York Mets | New York Mets signed free agent SS William Lugo to a minor league contract. |
| Aug 23, 2018 | Signed as free agent | Jose Colmenares | — | Washington Nationals | Washington Nationals signed free agent C Jose Colmenares to a minor league contract. |
| Aug 22, 2018 | Trade | Félix Paulino | Philadelphia Phillies | Chicago White Sox | Chicago White Sox traded LHP Luis Avilan to Philadelphia Phillies for RHP Felix Paulino. |
| Aug 22, 2018 | Signed as free agent | Nick Mears | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Nick Mears to a minor league contract. |
| Aug 21, 2018 | Trade | Daniel Murphy | Washington Nationals | Chicago Cubs | Washington Nationals traded 2B Daniel Murphy to Chicago Cubs for 2B Andruw Monasterio and Player To Be Named Later. |
| Aug 21, 2018 | Signed as free agent | Dillon Thomas | — | Milwaukee Brewers | Milwaukee Brewers signed free agent OF Dillon Thomas to a minor league contract. |
| Aug 21, 2018 | Signed as free agent | Dane Hutcheon | — | Cleveland Guardians | Cleveland Indians signed free agent 2B Dane Hutcheon to a minor league contract. |
| Aug 21, 2018 | Signed as free agent | Jason Creasy | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jason Creasy to a minor league contract. |
| Aug 21, 2018 | Signed as free agent | Austin Adams | — | Minnesota Twins | Minnesota Twins signed free agent RHP Austin Adams to a minor league contract. |
| Aug 21, 2018 | Signed as free agent | Jason Bonilla | — | San Francisco Giants | San Francisco Giants signed free agent RHP Jason Bonilla to a minor league contract. |
| Aug 20, 2018 | Signed as free agent | Angel Gomez | — | Baltimore Orioles | Baltimore Orioles signed free agent CF Angel Gomez to a minor league contract. |
| Aug 20, 2018 | Signed as free agent | Gilberto Machado | — | Baltimore Orioles | Baltimore Orioles signed free agent SS Gilberto Machado to a minor league contract. |
| Aug 18, 2018 | Trade | Nolan Blackwood | Athletics | Detroit Tigers | Oakland Athletics traded RHP Nolan Blackwood to Detroit Tigers. |
| Aug 18, 2018 | Signed as free agent | Randall Delgado | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Randall Delgado to a minor league contract. |
| Aug 18, 2018 | Signed as free agent | Junior Montero | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Junior Montero to a minor league contract. |
| Aug 17, 2018 | Signed as free agent | Chris Mazza | — | Seattle Mariners | Seattle Mariners signed free agent RHP Chris Mazza to a minor league contract. |
| Aug 17, 2018 | Trade | Sherten Apostel | Pittsburgh Pirates | Texas Rangers | Pittsburgh Pirates traded 3B Sherten Apostel to Texas Rangers. |
| Aug 17, 2018 | Trade | Joshua Javier | Arizona Diamondbacks | Texas Rangers | Arizona Diamondbacks traded LHP Joshua Javier to Texas Rangers. |
| Aug 17, 2018 | Signed as free agent | Antonio Placencia | — | Houston Astros | Houston Astros signed free agent RHP Antonio Placencia to a minor league contract. |
| Aug 17, 2018 | Signed as free agent | J'Rudjeanon Isenia | — | Baltimore Orioles | Baltimore Orioles signed free agent CF J'Rudjeanon Isenia to a minor league contract. |
| Aug 17, 2018 | Signed as free agent | Roberth Gutierrez | — | Chicago White Sox | Chicago White Sox signed free agent C Roberth Gutierrez to a minor league contract. |
| Aug 17, 2018 | Signed as free agent | Rafael Garcia | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Rafael Garcia to a minor league contract. |
| Aug 17, 2018 | Signed as free agent | Oscar Castaneda | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Oscar Castaneda to a minor league contract. |
| Aug 17, 2018 | Signed as free agent | Omar Hernandez | — | Kansas City Royals | Kansas City Royals signed free agent C Omar Hernandez to a minor league contract. |
| Aug 16, 2018 | Trade | Kelvin Gonzalez | Kansas City Royals | Texas Rangers | Kansas City Royals traded RHP Kelvin Gonzalez to Texas Rangers for Future Considerations. |
| Aug 16, 2018 | Signed as free agent | David Rollins | — | Seattle Mariners | Seattle Mariners signed free agent LHP David Rollins to a minor league contract. |
| Aug 16, 2018 | Signed as free agent | Andrew Schwaab | — | Detroit Tigers | Detroit Tigers signed free agent RHP Andrew Schwaab to a minor league contract. |
| Aug 16, 2018 | Signed as free agent | Domenico Pascale | — | New York Mets | New York Mets signed free agent C Domenico Pascale to a minor league contract. |
| Aug 16, 2018 | Signed as free agent | Nolberto Henriquez | — | New York Yankees | New York Yankees signed free agent RHP Nolberto Henriquez to a minor league contract. |
| Aug 16, 2018 | Signed as free agent | Yorlin Calderon | — | New York Yankees | New York Yankees signed free agent RHP Yorlin Calderon to a minor league contract. |
| Aug 16, 2018 | Signed as free agent | Luis Nova | — | New York Yankees | New York Yankees signed free agent RHP Luis Nova to a minor league contract. |
| Aug 16, 2018 | Signed as free agent | Felix Negueis | — | New York Yankees | New York Yankees signed free agent OF Felix Negueis to a minor league contract. |
| Aug 15, 2018 | Trade | Terrance Gore | Kansas City Royals | Chicago Cubs | Kansas City Royals traded LF Terrance Gore to Chicago Cubs for cash. |
| Aug 15, 2018 | Released | Danny Valencia | — | Baltimore Orioles | Baltimore Orioles released 3B Danny Valencia. |
| Aug 15, 2018 | Signed as free agent | Alex Demchak | — | Boston Red Sox | Boston Red Sox signed free agent LHP Alex Demchak to a minor league contract. |
| Aug 15, 2018 | Released | Blaine Boyer | — | Kansas City Royals | Kansas City Royals released RHP Blaine Boyer. |
| Aug 15, 2018 | Released | Phil Hughes | — | San Diego Padres | San Diego Padres released RHP Phil Hughes. |
| Aug 15, 2018 | Signed | Pedro Ventura | — | Toronto Blue Jays | Toronto Blue Jays signed SS Pedro Ventura. |
| Aug 15, 2018 | Signed | Anthony Rodriguez | — | Toronto Blue Jays | Toronto Blue Jays signed 1B Anthony Rodriguez. |
| Aug 15, 2018 | Signed as free agent | Brayan Rodriguez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent C Brayan Rodriguez to a minor league contract. |
| Aug 15, 2018 | Signed as free agent | Jesse Stinnett | — | Colorado Rockies | Colorado Rockies signed free agent RHP Jesse Stinnett to a minor league contract. |
| Aug 15, 2018 | Signed as free agent | Kelvin LaRoche | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Kelvin LaRoche to a minor league contract. |
| Aug 15, 2018 | Signed as free agent | Frailyn Sanchez | — | Boston Red Sox | Boston Red Sox signed free agent RHP Frailyn Sanchez to a minor league contract. |
| Aug 15, 2018 | Signed as free agent | Rayner Santana | — | San Francisco Giants | San Francisco Giants signed free agent C Rayner Santana to a minor league contract. |
| Aug 14, 2018 | Trade | Bryan Baker | Colorado Rockies | Toronto Blue Jays | Colorado Rockies traded RHP Bryan Baker to Toronto Blue Jays. |
| Aug 14, 2018 | Trade | Shane Baz | Pittsburgh Pirates | Tampa Bay Rays | Pittsburgh Pirates traded RHP Shane Baz to Tampa Bay Rays. |
| Aug 14, 2018 | Trade | Alexander Ovalles | Chicago Cubs | Texas Rangers | Chicago Cubs traded OF Alexander Ovalles to Texas Rangers. |
| Aug 14, 2018 | Trade | Odrisamer Despaigne | Miami Marlins | Los Angeles Angels | Miami Marlins traded RHP Odrisamer Despaigne to Los Angeles Angels for cash. |
| Aug 14, 2018 | Signed as free agent | Lizardo Herrera | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Lizardo Herrera to a minor league contract. |
| Aug 14, 2018 | Signed as free agent | Kevin Escalante | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Kevin Escalante to a minor league contract. |
| Aug 13, 2018 | Signed as free agent | Trey Jacobs | — | Colorado Rockies | Colorado Rockies signed free agent 3B Trey Jacobs to a minor league contract. |
| Aug 13, 2018 | Signed as free agent | Jose G. Perez | — | San Francisco Giants | San Francisco Giants signed free agent RHP Jose Perez to a minor league contract. |
| Aug 13, 2018 | Signed as free agent | Ronaldo Flores | — | San Francisco Giants | San Francisco Giants signed free agent C Ronaldo Flores to a minor league contract. |
| Aug 13, 2018 | Signed as free agent | Johan Montero | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Johan Montero to a minor league contract. |
| Aug 12, 2018 | Signed as free agent | Brock Stassi | — | San Francisco Giants | San Francisco Giants signed free agent 1B Brock Stassi to a minor league contract. |
| Aug 12, 2018 | Trade | Christopher Bostick | Pittsburgh Pirates | Miami Marlins | Pittsburgh Pirates traded CF Christopher Bostick to Miami Marlins for cash. |
| Aug 12, 2018 | Signed as free agent | Oliver Francois | — | Washington Nationals | Washington Nationals signed free agent OF Oliver Francois to a minor league contract. |
| Aug 11, 2018 | Signed as free agent | Courtney Hawkins | — | Cincinnati Reds | Cincinnati Reds signed free agent LF Courtney Hawkins to a minor league contract. |
| Aug 10, 2018 | Signed as free agent | Jorge De La Rosa | — | Chicago Cubs | Chicago Cubs signed free agent LHP Jorge De La Rosa. |
| Aug 10, 2018 | Trade | Justin Bour | Miami Marlins | Philadelphia Phillies | Miami Marlins traded 1B Justin Bour and cash to Philadelphia Phillies for LHP McKenzie Mills. |
| Aug 10, 2018 | Signed as free agent | Zach McAllister | — | Detroit Tigers | Detroit Tigers signed free agent RHP Zach McAllister. |
| Aug 10, 2018 | Signed as free agent | Carlos Rondon | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Carlos Rondon to a minor league contract. |
| Aug 9, 2018 | Trade | Nick Tepesch | Toronto Blue Jays | Detroit Tigers | Toronto Blue Jays traded RHP Nick Tepesch to Detroit Tigers for cash. |
| Aug 9, 2018 | Trade | Dakota Chalmers | Athletics | Minnesota Twins | Minnesota Twins traded RHP Fernando Rodney to Oakland Athletics for RHP Dakota Chalmers. |
| Aug 8, 2018 | Signed as free agent | Viosergy Rosa | — | Athletics | Oakland Athletics signed free agent 1B Viosergy Rosa to a minor league contract. |
| Aug 8, 2018 | Signed as free agent | Jesus Cruz | — | Detroit Tigers | Detroit Tigers signed free agent RHP Jesus Cruz to a minor league contract. |
| Aug 7, 2018 | Signed as free agent | Greg Holland | — | Washington Nationals | Washington Nationals signed free agent RHP Greg Holland. |
| Aug 7, 2018 | Released | Zach McAllister | — | Cleveland Guardians | Cleveland Indians released RHP Zach McAllister. |
| Aug 7, 2018 | Released | Luis Valbuena | — | Los Angeles Angels | Los Angeles Angels released 3B Luis Valbuena. |
| Aug 7, 2018 | Trade | Sal Biasi | Kansas City Royals | Milwaukee Brewers | Milwaukee Brewers traded RHP Jon Perrin to Kansas City Royals for RHP Sal Biasi. |
| Aug 7, 2018 | Signed as free agent | Luis Sanchez | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Luis Sanchez to a minor league contract. |
| Aug 7, 2018 | Signed | Victor Vodnik | — | Atlanta Braves | Atlanta Braves signed RHP Victor Vodnik. |
| Aug 7, 2018 | Signed as free agent | Yoscar Pimentel | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Yoscar Pimentel to a minor league contract. |
| Aug 7, 2018 | Signed as free agent | Faysel Gregorio | — | Boston Red Sox | Boston Red Sox signed free agent RHP Faysel Gregorio to a minor league contract. |
| Aug 7, 2018 | Signed as free agent | Ronny Rincones | — | New York Mets | New York Mets signed free agent RHP Ronny Rincones to a minor league contract. |
| Aug 7, 2018 | Signed as free agent | Ezequiel Ventura | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Ezequiel Ventura to a minor league contract. |
| Aug 6, 2018 | Trade | Mike Fiers | Detroit Tigers | Athletics | Detroit Tigers traded RHP Mike Fiers to Oakland Athletics for Future Considerations. |
| Aug 6, 2018 | Trade | Matt Seelinger | Pittsburgh Pirates | Tampa Bay Rays | Tampa Bay Rays traded SS Adeiny Hechavarria and cash to Pittsburgh Pirates for RHP Matt Seelinger. |
| Aug 6, 2018 | Signed as free agent | Ian Hardman | — | Detroit Tigers | Detroit Tigers signed free agent RHP Ian Hardman to a minor league contract. |
| Aug 6, 2018 | Signed as free agent | Damian Valdez | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Damian Valdez to a minor league contract. |
| Aug 6, 2018 | Signed as free agent | Yander Montero | — | Chicago Cubs | Chicago Cubs signed free agent RHP Yander Montero to a minor league contract. |
| Aug 6, 2018 | Signed as free agent | Rafael Morel | — | Chicago Cubs | Chicago Cubs signed free agent SS Rafael Morel to a minor league contract. |
| Aug 6, 2018 | Signed as free agent | Jose O. Lopez | — | Chicago Cubs | Chicago Cubs signed free agent OF Jose Lopez to a minor league contract. |
| Aug 5, 2018 | Signed as free agent | Drew Hutchison | — | Texas Rangers | Texas Rangers signed free agent RHP Drew Hutchison. |
| Aug 5, 2018 | Trade | Shawn Kelley | Washington Nationals | Athletics | Washington Nationals traded RHP Shawn Kelley and cash to Oakland Athletics for Future Considerations. |
| Aug 4, 2018 | Trade | George Kontos | Cleveland Guardians | New York Yankees | Cleveland Indians traded RHP George Kontos to New York Yankees for cash. |
| Aug 4, 2018 | Trade | Gio Urshela | Toronto Blue Jays | New York Yankees | Toronto Blue Jays traded 3B Gio Urshela to New York Yankees. |
| Aug 4, 2018 | Trade | Eric Villanueva | New York Mets | Detroit Tigers | New York Mets traded RHP Eric Villanueva to Detroit Tigers for cash. |
| Aug 4, 2018 | Released | Jorge De La Rosa | — | Arizona Diamondbacks | Arizona Diamondbacks released LHP Jorge De La Rosa. |
| Aug 4, 2018 | Signed as free agent | Matt Gage | — | New York Mets | New York Mets signed free agent LHP Matt Gage to a minor league contract. |
| Aug 4, 2018 | Signed as free agent | Bryan Matute | — | St. Louis Cardinals | St. Louis Cardinals signed free agent SS Bryan Matute to a minor league contract. |
| Aug 3, 2018 | Signed as free agent | César Puello | — | San Francisco Giants | San Francisco Giants signed free agent OF Cesar Puello to a minor league contract. |
| Aug 3, 2018 | Trade | Christian Binford | Baltimore Orioles | Detroit Tigers | Baltimore Orioles traded RHP Christian Binford to Detroit Tigers for cash. |
| Aug 3, 2018 | Signed as free agent | Sebastian Kessay | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Sebastian Kessay to a minor league contract. |
| Aug 3, 2018 | Signed as free agent | Doug Domnarski | — | Detroit Tigers | Detroit Tigers signed free agent LHP Doug Domnarski to a minor league contract. |
| Aug 3, 2018 | Signed as free agent | Isaac Rodriguez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Isaac Rodriguez to a minor league contract. |
| Aug 3, 2018 | Signed as free agent | Enrique Page | — | San Diego Padres | San Diego Padres signed free agent RHP Enrique Page to a minor league contract. |
| Aug 3, 2018 | Signed as free agent | Jonathan Alcantara | — | San Diego Padres | San Diego Padres signed free agent RHP Jonathan Alcantara to a minor league contract. |
| Aug 2, 2018 | Signed as free agent | Chris Tillman | — | Texas Rangers | Texas Rangers signed free agent RHP Chris Tillman to a minor league contract. |
| Aug 2, 2018 | Signed as free agent | Mike Hauschild | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Mike Hauschild. |
| Aug 2, 2018 | Signed as free agent | Tim Federowicz | — | Cincinnati Reds | Cincinnati Reds signed free agent C Tim Federowicz to a minor league contract. |
| Aug 2, 2018 | Signed as free agent | Zach Penrod | — | Texas Rangers | Texas Rangers signed free agent LHP Zach Penrod to a minor league contract. |
| Aug 2, 2018 | Signed as free agent | Jonathan Langley | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Jonathan Langley to a minor league contract. |
| Aug 2, 2018 | Signed as free agent | Saul Puente | — | Minnesota Twins | Minnesota Twins signed free agent SS Saul Puente to a minor league contract. |
| Aug 2, 2018 | Signed as free agent | Alexander Mojica | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 3B Alexander Mojica to a minor league contract. |
| Aug 1, 2018 | Released | Greg Holland | — | St. Louis Cardinals | St. Louis Cardinals released RHP Greg Holland. |
| Aug 1, 2018 | Signed as free agent | Ian Koch | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Ian Koch to a minor league contract. |
| Aug 1, 2018 | Signed as free agent | Alexander Vargas | — | New York Yankees | New York Yankees signed free agent SS Alexander Vargas to a minor league contract. |
| Aug 1, 2018 | Signed as free agent | Mason Fishback | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Mason Fishback to a minor league contract. |
| Aug 1, 2018 | Signed as free agent | Justin Morris | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Justin Morris to a minor league contract. |
| Aug 1, 2018 | Signed as free agent | Jake Haberer | — | Seattle Mariners | Seattle Mariners signed free agent RHP Jake Haberer to a minor league contract. |
| Aug 1, 2018 | Signed as free agent | Francis Cespedes | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Francis Cespedes to a minor league contract. |
| Aug 1, 2018 | Signed as free agent | Luis Santana | — | New York Mets | New York Mets signed free agent OF Luis Santana to a minor league contract. |
| Jul 31, 2018 | Trade | Matt Wisler | Atlanta Braves | Cincinnati Reds | Cincinnati Reds traded Adam Duvall to Atlanta Braves for RHP Lucas Sims, RHP Matt Wisler and Preston Tucker. |
| Jul 31, 2018 | Trade | Williams Jerez | Boston Red Sox | Los Angeles Angels | Los Angeles Angels traded 2B Ian Kinsler and cash to Boston Red Sox for RHP Ty Buttrey and LHP Williams Jerez. |
| Jul 31, 2018 | Trade | Keone Kela | Texas Rangers | Pittsburgh Pirates | Texas Rangers traded RHP Keone Kela to Pittsburgh Pirates for Taylor Hearn and Player To Be Named Later. |
| Jul 31, 2018 | Trade | Génesis Cabrera | Tampa Bay Rays | St. Louis Cardinals | St. Louis Cardinals traded CF Tommy Pham and Future Considerations to Tampa Bay Rays for RF Justin Williams, LHP Genesis Cabrera and RHP Roel Ramirez. |
| Jul 31, 2018 | Trade | Kyle Dowdy | Detroit Tigers | Cleveland Guardians | Detroit Tigers traded CF Leonys Martin and RHP Kyle Dowdy to Cleveland Indians for SS Willi Castro. |
| Jul 31, 2018 | Trade | Brad Ziegler | Miami Marlins | Arizona Diamondbacks | Miami Marlins traded RHP Brad Ziegler to Arizona Diamondbacks for RHP Tommy Eveld. |
| Jul 31, 2018 | Trade | Wilson Ramos | Tampa Bay Rays | Philadelphia Phillies | Tampa Bay Rays traded C Wilson Ramos to Philadelphia Phillies for Player To Be Named Later. |
| Jul 31, 2018 | Trade | Brandon Kintzler | Washington Nationals | Chicago Cubs | Washington Nationals traded RHP Brandon Kintzler to Chicago Cubs for RHP Jhon Romero. |
| Jul 31, 2018 | Trade | Jacob Waguespack | Philadelphia Phillies | Toronto Blue Jays | Toronto Blue Jays traded LHP Aaron Loup to Philadelphia Phillies for RHP Jacob Waguespack. |
| Jul 31, 2018 | Trade | Hunter Schryver | Tampa Bay Rays | Chicago White Sox | Tampa Bay Rays traded LHP Hunter Schryver to Chicago White Sox for Future Considerations. |
| Jul 31, 2018 | Trade | JC Encarnacion | Atlanta Braves | Baltimore Orioles | Baltimore Orioles traded RHP Kevin Gausman and RHP Darren O'Day to Atlanta Braves for RHP Evan Phillips, 3B Jean Carlos Encarnacion, C Brett Cumberland, LHP Bruce Zimmermann and Future Considerations. |
| Jul 31, 2018 | Trade | Cameron Maybin | Miami Marlins | Seattle Mariners | Miami Marlins traded LF Cameron Maybin to Seattle Mariners for SS Bryson Brigman and Future Considerations. |
| Jul 31, 2018 | Trade | Corey Copping | Los Angeles Dodgers | Toronto Blue Jays | Toronto Blue Jays traded RHP John Axford to Los Angeles Dodgers for RHP Corey Copping. |
| Jul 31, 2018 | Trade | Austin Meadows | Pittsburgh Pirates | Tampa Bay Rays | Tampa Bay Rays traded RHP Chris Archer to Pittsburgh Pirates for RHP Tyler Glasnow, CF Austin Meadows and Player To Be Named Later. |
| Jul 31, 2018 | Trade | Jean Carmona | Milwaukee Brewers | Baltimore Orioles | Baltimore Orioles traded 2B Jonathan Schoop to Milwaukee Brewers for 2B Jonathan Villar, RHP Luis Ortiz and SS Jean Carmona. |
| Jul 31, 2018 | Trade | Óscar Mercado | St. Louis Cardinals | Cleveland Guardians | St. Louis Cardinals traded CF Oscar Mercado to Cleveland Indians for CF Conner Capel and RF Jhon Torres. |
| Jul 31, 2018 | Trade | Luke Raley | Los Angeles Dodgers | Minnesota Twins | Minnesota Twins traded 2B Brian Dozier to Los Angeles Dodgers for 2B Logan Forsythe, OF Luke Raley and LHP Devin Smeltzer. |
| Jul 31, 2018 | Trade | Wei-Chieh Huang | Arizona Diamondbacks | Texas Rangers | Texas Rangers traded LHP Jake Diekman to Arizona Diamondbacks for RHP Wei-Chieh Huang and Player To Be Named Later. |
| Jul 31, 2018 | Released | Chris Volstad | — | Chicago White Sox | Chicago White Sox released RHP Chris Volstad. |
| Jul 31, 2018 | Released | Randall Delgado | — | Arizona Diamondbacks | Arizona Diamondbacks released RHP Randall Delgado. |
| Jul 31, 2018 | Released | Brad Miller | — | Milwaukee Brewers | Milwaukee Brewers released 2B Brad Miller. |
| Jul 31, 2018 | Signed as free agent | Matt Hartman | — | Atlanta Braves | Atlanta Braves signed free agent RHP Matt Hartman to a minor league contract. |
| Jul 31, 2018 | Signed as free agent | Mason McReaken | — | Atlanta Braves | Atlanta Braves signed free agent RHP Mason McReaken to a minor league contract. |
| Jul 31, 2018 | Signed as free agent | Antonio Sucre | — | Atlanta Braves | Atlanta Braves signed free agent RF Antonio Sucre to a minor league contract. |
| Jul 31, 2018 | Signed as free agent | Andres Garcia | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Andres Garcia to a minor league contract. |
| Jul 30, 2018 | Trade | Brad Brach | Baltimore Orioles | Atlanta Braves | Baltimore Orioles traded RHP Brad Brach to Atlanta Braves for Future Considerations. |
| Jul 30, 2018 | Signed as free agent | Marc Rzepczynski | — | Seattle Mariners | Seattle Mariners signed free agent LHP Marc Rzepczynski to a minor league contract. |
| Jul 30, 2018 | Trade | Ryan Costello | Seattle Mariners | Minnesota Twins | Minnesota Twins traded LHP Zach Duke and cash to Seattle Mariners for RHP Chase De Jong and 1B Ryan Costello. |
| Jul 30, 2018 | Trade | Hector Perez | Houston Astros | Toronto Blue Jays | Toronto Blue Jays traded RHP Roberto Osuna to Houston Astros for RHP David Paulino, RHP Hector Perez and RHP Ken Giles. |
| Jul 30, 2018 | Trade | Adam Warren | New York Yankees | Seattle Mariners | New York Yankees traded RHP Adam Warren to Seattle Mariners for Future Considerations. |
| Jul 30, 2018 | Trade | Lance Lynn | Minnesota Twins | New York Yankees | Minnesota Twins traded RHP Lance Lynn and cash to New York Yankees for 1B Tyler Austin and RHP Luis Rijo. |
| Jul 30, 2018 | Signed as free agent | Deivis Vegas | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Deivis Vegas to a minor league contract. |
| Jul 30, 2018 | Signed as free agent | Angel Chivilli | — | Colorado Rockies | Colorado Rockies signed free agent RHP Angel Chivilli to a minor league contract. |
| Jul 30, 2018 | Signed as free agent | Janer Feliciano | — | Colorado Rockies | Colorado Rockies signed free agent RHP Janer Feliciano to a minor league contract. |
| Jul 29, 2018 | Trade | Luke Voit | St. Louis Cardinals | New York Yankees | New York Yankees traded LHP Chasen Shreve and RHP Giovanny Gallegos to St. Louis Cardinals for 1B Luke Voit and Future Considerations. |
| Jul 29, 2018 | Trade | Caleb Frare | New York Yankees | Chicago White Sox | New York Yankees traded LHP Caleb Frare to Chicago White Sox for Future Considerations. |
| Jul 29, 2018 | Signed as free agent | Matt Holliday | — | Colorado Rockies | Colorado Rockies signed free agent LF Matt Holliday to a minor league contract. |
| Jul 29, 2018 | Signed as free agent | Osiel Rodriguez | — | New York Yankees | New York Yankees signed free agent RHP Osiel Rodriguez to a minor league contract. |
| Jul 29, 2018 | Signed as free agent | Brandon Baker | — | Texas Rangers | Texas Rangers signed free agent LHP Brandon Baker to a minor league contract. |
| Jul 28, 2018 | Signed | Wade Beasley | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Wade Beasley. |
| Jul 28, 2018 | Signed as free agent | Santiago Casilla | — | Colorado Rockies | Colorado Rockies signed free agent RHP Santiago Casilla to a minor league contract. |
| Jul 28, 2018 | Signed as free agent | Reinys Portillo | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Reinys Portillo to a minor league contract. |
| Jul 28, 2018 | Signed as free agent | Henry Gomez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Henry Gomez to a minor league contract. |
| Jul 28, 2018 | Signed as free agent | Diego Velasquez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C Diego Velasquez to a minor league contract. |
| Jul 28, 2018 | Signed as free agent | Juan Sanchez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C Juan Sanchez to a minor league contract. |
| Jul 27, 2018 | Trade | Eddie Butler | Chicago Cubs | Texas Rangers | Texas Rangers traded LHP Cole Hamels and cash to Chicago Cubs for Eddie Butler, RHP Rollie Lacy and Player To Be Named Later. |
| Jul 27, 2018 | Trade | Seth Elledge | Seattle Mariners | St. Louis Cardinals | St. Louis Cardinals traded RHP Sam Tuivailala to Seattle Mariners for RHP Seth Elledge. |
| Jul 27, 2018 | Trade | Gabriel Maciel | Arizona Diamondbacks | Minnesota Twins | Minnesota Twins traded SS Eduardo Escobar to Arizona Diamondbacks for RF Ernie De La Trinidad, RF Gabriel Maciel and RHP Jhoan Duran. |
| Jul 27, 2018 | Trade | Franklyn Kilome | Philadelphia Phillies | New York Mets | New York Mets traded 2B Asdrubal Cabrera to Philadelphia Phillies for RHP Franklyn Kilome. |
| Jul 27, 2018 | Signed as free agent | Eric Sogard | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 2B Eric Sogard to a minor league contract. |
| Jul 27, 2018 | Trade | Jorge Alcala | Houston Astros | Minnesota Twins | Minnesota Twins traded RHP Ryan Pressly to Houston Astros for CF Gilberto Celestino and RHP Jorge Alcala. |
| Jul 27, 2018 | Trade | Jorge López | Milwaukee Brewers | Kansas City Royals | Kansas City Royals traded 3B Mike Moustakas to Milwaukee Brewers for CF Brett Phillips and RHP Jorge Lopez. |
| Jul 27, 2018 | Signed as free agent | Tom Sutera | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Tom Sutera to a minor league contract. |
| Jul 27, 2018 | Signed as free agent | Isaac Bellony | — | Baltimore Orioles | Baltimore Orioles signed free agent CF Isaac Bellony to a minor league contract. |
| Jul 26, 2018 | Trade | Forrest Wall | Colorado Rockies | Toronto Blue Jays | Toronto Blue Jays traded RHP Seunghwan Oh to Colorado Rockies for 1B Chad Spanberger and 2B Forrest Wall. |
| Jul 26, 2018 | Trade | Martín Maldonado | Los Angeles Angels | Houston Astros | Los Angeles Angels traded C Martin Maldonado to Houston Astros for LHP Patrick Sandoval and Future Considerations. |
| Jul 26, 2018 | Trade | Kodi Medeiros | Milwaukee Brewers | Chicago White Sox | Chicago White Sox traded RHP Joakim Soria and cash to Milwaukee Brewers for LHP Kodi Medeiros and RHP Wilber Perez. |
| Jul 26, 2018 | Trade | Brandon Drury | New York Yankees | Toronto Blue Jays | Toronto Blue Jays traded J.A. Happ to New York Yankees for LF Billy McKinney and 3B Brandon Drury. |
| Jul 26, 2018 | Signed as free agent | Jordan Desguin | — | Seattle Mariners | Seattle Mariners signed free agent RHP Jordan Desguin to a minor league contract. |
| Jul 26, 2018 | Trade | Jonny Venters | Tampa Bay Rays | Atlanta Braves | Tampa Bay Rays traded LHP Jonny Venters to Atlanta Braves for Future Considerations. |
| Jul 26, 2018 | Signed as free agent | Kyle Arjona | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Kyle Arjona to a minor league contract. |
| Jul 26, 2018 | Signed as free agent | Adalberto Pena | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Adalberto Pena to a minor league contract. |
| Jul 26, 2018 | Signed as free agent | Jeremias Vasquez | — | Miami Marlins | Miami Marlins signed free agent RHP Jeremias Vasquez to a minor league contract. |
| Jul 25, 2018 | Trade | Jalen Beeks | Boston Red Sox | Tampa Bay Rays | Tampa Bay Rays traded RHP Nathan Eovaldi to Boston Red Sox for LHP Jalen Beeks. |
| Jul 25, 2018 | Signed as free agent | Asher Wojciechowski | — | Chicago White Sox | Chicago White Sox signed free agent RHP Asher Wojciechowski to a minor league contract. |
| Jul 25, 2018 | Signed as free agent | Taylor Featherston | — | Cincinnati Reds | Cincinnati Reds signed free agent 2B Taylor Featherston to a minor league contract. |
| Jul 25, 2018 | Trade | Brian Shaffer | Arizona Diamondbacks | Tampa Bay Rays | Tampa Bay Rays traded RHP Matt Andriese to Arizona Diamondbacks for C Michael Perez and RHP Brian Shaffer. |
| Jul 25, 2018 | Signed as free agent | Kevin Folman | — | Chicago White Sox | Chicago White Sox signed free agent RHP Kevin Folman to a minor league contract. |
| Jul 25, 2018 | Signed as free agent | Troy Miller | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Troy Miller to a minor league contract. |
| Jul 25, 2018 | Signed as free agent | Jordany Ventura | — | New York Mets | New York Mets signed free agent RHP Jordany Ventura to a minor league contract. |
| Jul 25, 2018 | Signed as free agent | Luis Silverio | — | New York Mets | New York Mets signed free agent RHP Luis Silverio to a minor league contract. |
| Jul 25, 2018 | Signed as free agent | Rothaikeg Seijas | — | Kansas City Royals | Kansas City Royals signed free agent RF Rothaikeg Seijas to a minor league contract. |
| Jul 25, 2018 | Signed as free agent | Efrenyer Narvaez | — | Texas Rangers | Texas Rangers signed free agent C Efrenyer Narvaez to a minor league contract. |
| Jul 24, 2018 | Trade | Zack Britton | Baltimore Orioles | New York Yankees | Baltimore Orioles traded LHP Zach Britton to New York Yankees for RHP Cody Carroll, RHP Dillon Tate and LHP Josh Rogers. |
| Jul 24, 2018 | Signed as free agent | Nick Osborne | — | Athletics | Oakland Athletics signed free agent OF Nick Osborne to a minor league contract. |
| Jul 24, 2018 | Signed as free agent | Jake Mayer | — | Seattle Mariners | Seattle Mariners signed free agent RHP Jake Mayer to a minor league contract. |
| Jul 24, 2018 | Signed as free agent | Igor Kimura | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Igor Kimura to a minor league contract. |
| Jul 24, 2018 | Signed as free agent | Gabriel Martinez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent CF Gabriel Martinez to a minor league contract. |
| Jul 24, 2018 | Signed as free agent | Milkar Perez | — | Seattle Mariners | Seattle Mariners signed free agent 3B Milkar Perez to a minor league contract. |
| Jul 24, 2018 | Signed as free agent | Jhon Ramon | — | Texas Rangers | Texas Rangers signed free agent LHP Jhon Ramon to a minor league contract. |
| Jul 23, 2018 | Signed as free agent | Luis Lugo | — | Kansas City Royals | Kansas City Royals signed free agent LHP Luis Lugo to a minor league contract. |
| Jul 23, 2018 | Signed as free agent | Gregori Custodio | — | Boston Red Sox | Boston Red Sox signed free agent 3B Gregori Custodio to a minor league contract. |
| Jul 23, 2018 | Signed as free agent | Juan Diaz | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Juan Diaz to a minor league contract. |
| Jul 23, 2018 | Signed as free agent | David Morillo | — | Seattle Mariners | Seattle Mariners signed free agent RHP David Morillo to a minor league contract. |
| Jul 22, 2018 | Trade | Brian Goodwin | Washington Nationals | Kansas City Royals | Washington Nationals traded LF Brian Goodwin to Kansas City Royals for RHP Jacob Condra-Bogan. |
| Jul 21, 2018 | Signed as free agent | Rob Brantly | — | Cleveland Guardians | Cleveland Indians signed free agent C Rob Brantly to a minor league contract. |
| Jul 21, 2018 | Trade | Bobby Wahl | Athletics | New York Mets | New York Mets traded RHP Jeurys Familia to Oakland Athletics for RHP Bobby Wahl, 3B Will Toffey and Future Considerations. |
| Jul 21, 2018 | Signed as free agent | Jose Garcia | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Jose Garcia to a minor league contract. |
| Jul 21, 2018 | Signed as free agent | Danyer Sanabria | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent CF Danyer Sanabria to a minor league contract. |
| Jul 21, 2018 | Signed as free agent | Jose Chambuco | — | New York Yankees | New York Yankees signed free agent RHP Jose Chambuco to a minor league contract. |
| Jul 21, 2018 | Signed as free agent | Andy Maldonado | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Andy Maldonado to a minor league contract. |
| Jul 20, 2018 | Signed | Zachary Hammer | — | New York Mets | New York Mets signed RHP Zachary Hammer. |
| Jul 20, 2018 | Signed as free agent | Mauricio Cabrera | — | Chicago White Sox | Chicago White Sox signed free agent RHP Mauricio Cabrera to a minor league contract. |
| Jul 20, 2018 | Signed as free agent | Rymer Liriano | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RF Rymer Liriano to a minor league contract. |
| Jul 20, 2018 | Signed as free agent | Mark Montgomery | — | Boston Red Sox | Boston Red Sox signed free agent RHP Mark Montgomery to a minor league contract. |
| Jul 20, 2018 | Signed as free agent | Manuel Olivares | — | Colorado Rockies | Colorado Rockies signed free agent RHP Manuel Olivares to a minor league contract. |
| Jul 19, 2018 | Trade | Francisco Mejía | Cleveland Guardians | San Diego Padres | San Diego Padres traded LHP Brad Hand and RHP Adam Cimber to Cleveland Indians for C Francisco Mejia. |
| Jul 19, 2018 | Trade | Jeremy Hazelbaker | Tampa Bay Rays | Minnesota Twins | Tampa Bay Rays traded LF Jeremy Hazelbaker to Minnesota Twins for cash. |
| Jul 19, 2018 | Released | Santiago Casilla | — | Athletics | Oakland Athletics released RHP Santiago Casilla. |
| Jul 19, 2018 | Signed as free agent | Tyler Fallwell | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Tyler Fallwell to a minor league contract. |
| Jul 19, 2018 | Trade | Tyler Thomas | Chicago Cubs | Texas Rangers | Texas Rangers traded RHP Jesse Chavez to Chicago Cubs for LHP Tyler Thomas. |
| Jul 19, 2018 | Signed as free agent | Michael Stefanic | — | Los Angeles Angels | Los Angeles Angels signed free agent 2B Michael Stefanic to a minor league contract. |
| Jul 19, 2018 | Signed as free agent | Justin Grimm | — | Seattle Mariners | Seattle Mariners signed free agent RHP Justin Grimm to a minor league contract. |
| Jul 19, 2018 | Signed as free agent | Jonfy Diaz | — | San Diego Padres | San Diego Padres signed free agent LHP Jonfy Diaz to a minor league contract. |
| Jul 19, 2018 | Signed as free agent | Franrielis Bastardo | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Franrielis Bastardo to a minor league contract. |
| Jul 19, 2018 | Signed as free agent | Luis Crisostomo | — | San Diego Padres | San Diego Padres signed free agent RHP Luis Crisostomo to a minor league contract. |
| Jul 18, 2018 | Released | Abraham Almonte | — | Kansas City Royals | Kansas City Royals released CF Abraham Almonte. |
| Jul 18, 2018 | Signed as free agent | Trevor Frank | — | Seattle Mariners | Seattle Mariners signed free agent RHP Trevor Frank to a minor league contract. |
| Jul 18, 2018 | Signed as free agent | Nicholas Torres | — | Texas Rangers | Texas Rangers signed free agent OF Nick Torres to a minor league contract. |
| Jul 18, 2018 | Trade | Manny Machado | Baltimore Orioles | Los Angeles Dodgers | Baltimore Orioles traded SS Manny Machado to Los Angeles Dodgers for 2B Breyvic Valera, RF Yusniel Diaz, RHP Zach Pop, RHP Dean Kremer and 3B Rylan Bannon. |
| Jul 18, 2018 | Signed as free agent | Zander Clarke | — | San Francisco Giants | San Francisco Giants signed free agent LF Zander Clarke to a minor league contract. |
| Jul 17, 2018 | Signed as free agent | Jeff Ames | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Jeff Ames to a minor league contract. |
| Jul 17, 2018 | Signed as free agent | Gabriel Jaramillo | — | Chicago Cubs | Chicago Cubs signed free agent RHP Gabriel Jaramillo to a minor league contract. |
| Jul 17, 2018 | Signed as free agent | Brian Moran | — | Colorado Rockies | Colorado Rockies signed free agent LHP Brian Moran to a minor league contract. |
| Jul 17, 2018 | Signed as free agent | Devan Watts | — | Chicago White Sox | Chicago White Sox signed free agent RHP Devan Watts to a minor league contract. |
| Jul 17, 2018 | Signed as free agent | Gustavo Rodriguez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Gustavo J. Rodriguez to a minor league contract. |
| Jul 17, 2018 | Signed as free agent | Michael Gomez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Michael Gomez to a minor league contract. |
| Jul 17, 2018 | Signed as free agent | Alfonso Guillen | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent SS Alfonso Guillen to a minor league contract. |
| Jul 16, 2018 | Signed as free agent | Cameron Rupp | — | Seattle Mariners | Seattle Mariners signed free agent C Cameron Rupp to a minor league contract. |
| Jul 16, 2018 | Signed as free agent | Lane Adams | — | Atlanta Braves | Atlanta Braves signed free agent LF Lane Adams to a minor league contract. |
| Jul 16, 2018 | Signed as free agent | Fernando Salas | — | Atlanta Braves | Atlanta Braves signed free agent RHP Fernando Salas to a minor league contract. |
| Jul 16, 2018 | Signed as free agent | Barry Enright | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Barry Enright to a minor league contract. |
| Jul 16, 2018 | Signed | Blakely Brown | — | New York Yankees | New York Yankees signed RHP Blakely Brown. |
| Jul 16, 2018 | Signed | Jake Kinney | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Jake Kinney. |
| Jul 16, 2018 | Signed as free agent | Richie Shaffer | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LF Richie Shaffer to a minor league contract. |
| Jul 16, 2018 | Signed as free agent | Darimen Mora Jr. | — | Los Angeles Angels | Los Angeles Angels signed free agent SS Darimel Mora to a minor league contract. |
| Jul 16, 2018 | Signed as free agent | Abismael Paulino | — | San Diego Padres | San Diego Padres signed free agent RHP Abismael Paulino to a minor league contract. |
| Jul 16, 2018 | Signed as free agent | Rodrigo Rosario | — | San Diego Padres | San Diego Padres signed free agent RHP Rodrigo Rosario to a minor league contract. |
| Jul 16, 2018 | Signed as free agent | Cesar Aponte | — | Tampa Bay Rays | Tampa Bay Rays signed free agent IF Cesar Aponte to a minor league contract. |
| Jul 16, 2018 | Signed as free agent | Carlos Jimenez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Carlos Jimenez to a minor league contract. |
| Jul 15, 2018 | Trade | Hoby Milner | Philadelphia Phillies | Tampa Bay Rays | Philadelphia Phillies traded LHP Hoby Milner to Tampa Bay Rays for cash. |
| Jul 14, 2018 | Released | Austin Jackson | — | Texas Rangers | Texas Rangers released CF Austin Jackson. |
| Jul 13, 2018 | Signed as free agent | Luis Carrasco | — | Athletics | Oakland Athletics signed free agent RHP Luis Carrasco to a minor league contract. |
| Jul 13, 2018 | Signed as free agent | Peter Bourjos | — | San Francisco Giants | San Francisco Giants signed free agent CF Peter Bourjos to a minor league contract. |
| Jul 13, 2018 | Signed as free agent | Sean Gilmartin | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Sean Gilmartin to a minor league contract. |
| Jul 13, 2018 | Signed as free agent | Tim DalPorto | — | San Francisco Giants | San Francisco Giants signed free agent SS Tim DalPorto to a minor league contract. |
| Jul 13, 2018 | Signed as free agent | Nick Starr | — | Texas Rangers | Texas Rangers signed free agent RHP Nick Starr to a minor league contract. |
| Jul 13, 2018 | Signed | Evan Lee | — | Washington Nationals | Washington Nationals signed LHP Evan Lee. |
| Jul 13, 2018 | Signed as free agent | Jared Gates | — | Baltimore Orioles | Baltimore Orioles signed free agent 1B Jared Gates to a minor league contract. |
| Jul 13, 2018 | Signed as free agent | Junichi Tazawa | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Junichi Tazawa to a minor league contract. |
| Jul 13, 2018 | Signed as free agent | Logan Gillaspie | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Logan Gillaspie to a minor league contract. |
| Jul 13, 2018 | Signed as free agent | Richard Guasch | — | Athletics | Oakland Athletics signed free agent RHP Richard Guasch to a minor league contract. |
| Jul 13, 2018 | Signed as free agent | Luis Martinez | — | Athletics | Oakland Athletics signed free agent RHP Luis Martinez to a minor league contract. |
| Jul 13, 2018 | Signed as free agent | Jose Gonzalez | — | Athletics | Oakland Athletics signed free agent RHP Jose Gonzalez to a minor league contract. |
| Jul 13, 2018 | Signed as free agent | Jose Escorche | — | Athletics | Oakland Athletics signed free agent SS Jose Escorche to a minor league contract. |
| Jul 13, 2018 | Signed as free agent | Roger Rodriguez | — | Athletics | Oakland Athletics signed free agent RHP Roger Rodriguez to a minor league contract. |
| Jul 12, 2018 | Signed as free agent | Kevin Alcántara | — | New York Yankees | New York Yankees signed free agent OF Kevin Alcantara to a minor league contract. |
| Jul 12, 2018 | Signed as free agent | Agustín Ramírez | — | New York Yankees | New York Yankees signed free agent C Agustin Ramirez to a minor league contract. |
| Jul 12, 2018 | Signed as free agent | Logan Taylor | — | Cincinnati Reds | Cincinnati Reds signed free agent OF Logan Taylor to a minor league contract. |
| Jul 12, 2018 | Signed | Grant Wolfram | — | Texas Rangers | Texas Rangers signed LHP Grant Wolfram. |
| Jul 12, 2018 | Signed as free agent | Troy Scribner | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Troy Scribner to a minor league contract. |
| Jul 12, 2018 | Signed as free agent | L.J. Hoes | — | Baltimore Orioles | Baltimore Orioles signed free agent LF L.J. Hoes to a minor league contract. |
| Jul 12, 2018 | Signed as free agent | Chi-Ling Hsu | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Chi-Ling Hsu to a minor league contract. |
| Jul 12, 2018 | Signed as free agent | Lisander Brito | — | Seattle Mariners | Seattle Mariners signed free agent RHP Lisander Brito to a minor league contract. |
| Jul 12, 2018 | Signed as free agent | Jorge Garcia | — | San Francisco Giants | San Francisco Giants signed free agent RHP Jorge Garcia to a minor league contract. |
| Jul 11, 2018 | Signed | LaRon Smith | — | Minnesota Twins | Minnesota Twins signed C LaRon Smith. |
| Jul 11, 2018 | Signed | J.J. Montgomery | — | Baltimore Orioles | Baltimore Orioles signed RHP J.J. Montgomery. |
| Jul 11, 2018 | Released | Marcos Molina | — | New York Mets | New York Mets released RHP Marcos Molina. |
| Jul 11, 2018 | Signed | Caleb Knight | — | Chicago Cubs | Chicago Cubs signed C Caleb Knight. |
| Jul 11, 2018 | Signed as free agent | LeeMarcus Boyd | — | Colorado Rockies | Colorado Rockies signed free agent SS LeeMarcus Boyd to a minor league contract. |
| Jul 11, 2018 | Signed as free agent | Felix Jorge | — | Minnesota Twins | Minnesota Twins signed free agent RHP Felix Jorge to a minor league contract. |
| Jul 11, 2018 | Signed as free agent | Mirton Blanco | — | Washington Nationals | Washington Nationals signed free agent RHP Mirton Blanco to a minor league contract. |
| Jul 10, 2018 | Signed as free agent | Jorman Aponte | — | Colorado Rockies | Colorado Rockies signed free agent LHP Jorman Aponte to a minor league contract. |
| Jul 10, 2018 | Released | Eric Sogard | — | Milwaukee Brewers | Milwaukee Brewers released SS Eric Sogard. |
| Jul 10, 2018 | Signed as free agent | Carlos Diaz | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Carlos Diaz to a minor league contract. |
| Jul 10, 2018 | Signed as free agent | Ramon Fernandez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Ramon Fernandez to a minor league contract. |
| Jul 10, 2018 | Signed as free agent | Grant Spranger | — | Seattle Mariners | Seattle Mariners signed free agent LHP Grant Spranger to a minor league contract. |
| Jul 10, 2018 | Signed as free agent | Stalyn Sanchez | — | Colorado Rockies | Colorado Rockies signed free agent RHP Stalyn Sanchez to a minor league contract. |
| Jul 10, 2018 | Signed as free agent | Pablo Mujica | — | Kansas City Royals | Kansas City Royals signed free agent LHP Pablo Mujica to a minor league contract. |
| Jul 10, 2018 | Signed as free agent | Dionmy Salon | — | Kansas City Royals | Kansas City Royals signed free agent C Dionmy Salon to a minor league contract. |
| Jul 10, 2018 | Signed as free agent | Eduardo Garcia | — | Milwaukee Brewers | Milwaukee Brewers signed free agent SS Eduardo Garcia to a minor league contract. |
| Jul 10, 2018 | Signed as free agent | Ricardo Salazar | — | Tampa Bay Rays | Tampa Bay Rays signed free agent IF Ricardo Salazar to a minor league contract. |
| Jul 9, 2018 | Released | Fernando Salas | — | Arizona Diamondbacks | Arizona Diamondbacks released RHP Fernando Salas. |
| Jul 9, 2018 | Signed as free agent | Patrick McGuff | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Patrick McGuff to a minor league contract. |
| Jul 9, 2018 | Signed as free agent | Ricardo Balogh | — | Houston Astros | Houston Astros signed free agent SS Ricardo Balogh to a minor league contract. |
| Jul 9, 2018 | Signed as free agent | Brainer Bonaci | — | Boston Red Sox | Boston Red Sox signed free agent SS Brainer Bonaci to a minor league contract. |
| Jul 9, 2018 | Signed | Jaylen Palmer | — | New York Mets | New York Mets signed SS Jaylen Palmer. |
| Jul 9, 2018 | Signed as free agent | Roberto Gómez | — | San Francisco Giants | San Francisco Giants signed free agent RHP Roberto Gomez to a minor league contract. |
| Jul 9, 2018 | Signed as free agent | Shawn Morimando | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Shawn Morimando to a minor league contract. |
| Jul 9, 2018 | Signed as free agent | Granden Goetzman | — | Houston Astros | Houston Astros signed free agent RF Granden Goetzman to a minor league contract. |
| Jul 9, 2018 | Signed as free agent | Nelson Beltran | — | Athletics | Oakland Athletics signed free agent SS Nelson Beltran to a minor league contract. |
| Jul 9, 2018 | Signed as free agent | Bryanth Sanchez | — | Washington Nationals | Washington Nationals signed free agent C Bryanth Sanchez to a minor league contract. |
| Jul 9, 2018 | Signed as free agent | Cristopher Cruz | — | Athletics | Oakland Athletics signed free agent 3B Cristopher Cruz to a minor league contract. |
| Jul 9, 2018 | Signed as free agent | Adriel Gonzalez | — | Athletics | Oakland Athletics signed free agent RHP Adriel Gonzalez to a minor league contract. |
| Jul 9, 2018 | Signed as free agent | Ronny Santana | — | Athletics | Oakland Athletics signed free agent SS Ronny Santana to a minor league contract. |
| Jul 8, 2018 | Trade | Cory Gearrin | San Francisco Giants | Texas Rangers | San Francisco Giants traded CF Austin Jackson, RHP Cory Gearrin and RHP Jason Bahr to Texas Rangers for Player To Be Named Later. |
| Jul 8, 2018 | Signed as free agent | Kaito Yuki | — | Kansas City Royals | Kansas City Royals signed free agent RHP Kaito Yuki to a minor league contract. |
| Jul 8, 2018 | Signed as free agent | Dallas Beeler | — | Kansas City Royals | Kansas City Royals signed free agent RHP Dallas Beeler to a minor league contract. |
| Jul 8, 2018 | Signed as free agent | Dario Peralta | — | Kansas City Royals | Kansas City Royals signed free agent RHP Dario Peralta to a minor league contract. |
| Jul 7, 2018 | Released | Justin Grimm | — | Kansas City Royals | Kansas City Royals released RHP Justin Grimm. |
| Jul 7, 2018 | Signed | Nolan Kingham | — | Atlanta Braves | Atlanta Braves signed RHP Nolan Kingham. |
| Jul 7, 2018 | Signed | Parker Joe Robinson | — | Los Angeles Angels | Los Angeles Angels signed RHP Parker Joe Robinson. |
| Jul 7, 2018 | Signed as free agent | Yeyson Velez | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Yeyson Velez to a minor league contract. |
| Jul 7, 2018 | Signed as free agent | Juan Brito | — | Colorado Rockies | Colorado Rockies signed free agent SS Juan Brito to a minor league contract. |
| Jul 7, 2018 | Signed as free agent | Mishael Deson | — | Colorado Rockies | Colorado Rockies signed free agent OF Mishael Deson to a minor league contract. |
| Jul 7, 2018 | Signed as free agent | Ronny Simon | — | Chicago Cubs | Chicago Cubs signed free agent SS Ronny Simon to a minor league contract. |
| Jul 7, 2018 | Signed as free agent | Marc Civit | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Marc Civit to a minor league contract. |
| Jul 6, 2018 | Signed | Brice Turang | — | Milwaukee Brewers | Milwaukee Brewers signed SS Brice Turang. |
| Jul 6, 2018 | Signed | Chase Shugart | — | Boston Red Sox | Boston Red Sox signed RHP Chase Shugart. |
| Jul 6, 2018 | Signed | Chris Machamer | — | Boston Red Sox | Boston Red Sox signed RHP Chris Machamer. |
| Jul 6, 2018 | Trade | Jon Kemmer | Houston Astros | Minnesota Twins | Houston Astros traded RF Jon Kemmer to Minnesota Twins. |
| Jul 6, 2018 | Trade | Tommy DeJuneas | Cleveland Guardians | Houston Astros | Houston Astros traded RHP James Hoyt to Cleveland Indians for RHP Tommy DeJuneas. |
| Jul 6, 2018 | Signed | Shane McClanahan | — | Tampa Bay Rays | Tampa Bay Rays signed LHP Shane McClanahan. |
| Jul 6, 2018 | Signed | Andrew Miller | — | Miami Marlins | Miami Marlins signed LHP Andrew Miller. |
| Jul 6, 2018 | Signed | JJ Schwarz | — | Athletics | Oakland Athletics signed C JJ Schwarz. |
| Jul 6, 2018 | Signed | Joe DeMers | — | Athletics | Oakland Athletics signed RHP Joe DeMers. |
| Jul 6, 2018 | Signed | Sean Guilbe | — | San Diego Padres | San Diego Padres signed 2B Sean Guilbe. |
| Jul 6, 2018 | Signed | Nick Thwaits | — | San Diego Padres | San Diego Padres signed RHP Nick Thwaits. |
| Jul 6, 2018 | Signed | Cullen Dana | — | San Diego Padres | San Diego Padres signed LHP Cullen Dana. |
| Jul 6, 2018 | Signed as free agent | Deivy Mendez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Deivy Mendez to a minor league contract. |
| Jul 6, 2018 | Signed | Zack Kone | — | Pittsburgh Pirates | Pittsburgh Pirates signed SS Zack Kone. |
| Jul 6, 2018 | Signed | Andy Weber | — | Chicago Cubs | Chicago Cubs signed 2B Andy Weber. |
| Jul 6, 2018 | Signed | Josh Sawyer | — | Chicago Cubs | Chicago Cubs signed LHP Josh Sawyer. |
| Jul 6, 2018 | Signed | Jake Reindl | — | Chicago Cubs | Chicago Cubs signed RHP Jake Reindl. |
| Jul 6, 2018 | Signed | Niels Stone | — | Chicago Cubs | Chicago Cubs signed RHP Niels Stone. |
| Jul 6, 2018 | Signed | Edmond Americaan | — | Chicago Cubs | Chicago Cubs signed OF Edmond Americaan. |
| Jul 6, 2018 | Signed as free agent | Ben Holmes | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Ben Holmes to a minor league contract. |
| Jul 6, 2018 | Signed | Cal Raleigh | — | Seattle Mariners | Seattle Mariners signed C Cal Raleigh. |
| Jul 6, 2018 | Signed | Erick Rivera | — | Minnesota Twins | Minnesota Twins signed OF Erick Rivera. |
| Jul 6, 2018 | Signed as free agent | Chris Farish | — | Detroit Tigers | Detroit Tigers signed free agent RHP Chris Farish to a minor league contract. |
| Jul 6, 2018 | Signed | Kacey Murphy | — | Detroit Tigers | Detroit Tigers signed LHP Kacey Murphy. |
| Jul 6, 2018 | Signed | Ryan Shetter | — | Atlanta Braves | Atlanta Braves signed RHP Ryan Shetter. |
| Jul 6, 2018 | Signed | Beau Brundage | — | Tampa Bay Rays | Tampa Bay Rays signed OF Beau Brundage. |
| Jul 6, 2018 | Signed | Michael Byrne | — | Cincinnati Reds | Cincinnati Reds signed RHP Michael Byrne. |
| Jul 6, 2018 | Signed | Korry Howell | — | Milwaukee Brewers | Milwaukee Brewers signed SS Korry Howell. |
| Jul 6, 2018 | Signed | Charles Mack | — | Minnesota Twins | Minnesota Twins signed SS Charles Mack. |
| Jul 6, 2018 | Signed | Franklin Parra | — | New York Mets | New York Mets signed LHP Franklin Parra. |
| Jul 6, 2018 | Signed | Barrett Loseke | — | New York Yankees | New York Yankees signed RHP Barrett Loseke. |
| Jul 6, 2018 | Signed | Drew Fregia | — | Baltimore Orioles | Baltimore Orioles signed 3B Andrew Fregia. |
| Jul 6, 2018 | Signed as free agent | Carlos Paiva | — | Atlanta Braves | Atlanta Braves signed free agent OF Carlos Paiva to a minor league contract. |
| Jul 6, 2018 | Signed as free agent | Andrew Bernstein | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Andrew Bernstein to a minor league contract. |
| Jul 6, 2018 | Signed as free agent | Chandler Raiden | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Chandler Raiden to a minor league contract. |
| Jul 6, 2018 | Signed | Dylan Dusek | — | San Francisco Giants | San Francisco Giants signed LHP Dylan Dusek. |
| Jul 6, 2018 | Signed as free agent | Joey Matulovich | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Joey Matulovich to a minor league contract. |
| Jul 6, 2018 | Signed | Joey Matulovich | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Joey Matulovich. |
| Jul 6, 2018 | Signed | Meaux Landry | — | Los Angeles Dodgers | Los Angeles Dodgers signed 1B Simon Landry. |
| Jul 6, 2018 | Signed | Blaine Knight | — | Baltimore Orioles | Baltimore Orioles signed RHP Blaine Knight. |
| Jul 6, 2018 | Signed | Jacob Lopez | — | San Francisco Giants | San Francisco Giants signed LHP Jacob Lopez. |
| Jul 6, 2018 | Signed as free agent | Jorge Bautista | — | Atlanta Braves | Atlanta Braves signed free agent RHP Jorge Bautista to a minor league contract. |
| Jul 6, 2018 | Signed as free agent | Juan Martinez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Juan Martinez to a minor league contract. |
| Jul 6, 2018 | Signed as free agent | Samuel Valerio | — | Kansas City Royals | Kansas City Royals signed free agent RHP Samuel Valerio to a minor league contract. |
| Jul 6, 2018 | Signed | Bryan Hernandez | — | San Francisco Giants | San Francisco Giants signed RF Bryan Hernandez. |
| Jul 6, 2018 | Signed as free agent | Perez Knowles | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Perez Knowles to a minor league contract. |
| Jul 6, 2018 | Signed | Charlie Ruegger | — | New York Yankees | New York Yankees signed RHP Charlie Ruegger. |
| Jul 6, 2018 | Signed as free agent | Leandro Pineda | — | Philadelphia Phillies | Philadelphia Phillies signed free agent OF Leandro Pineda to a minor league contract. |
| Jul 6, 2018 | Signed as free agent | Adrian Ramos | — | Texas Rangers | Texas Rangers signed free agent LHP Adrian Ramos to a minor league contract. |
| Jul 6, 2018 | Signed as free agent | Breidy Encarnación | — | Miami Marlins | Miami Marlins signed free agent RHP Breidy Encarnacion to a minor league contract. |
| Jul 6, 2018 | Signed as free agent | Fernando Ortega | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Fernando Ortega to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Kory Behenna | — | Detroit Tigers | Detroit Tigers signed free agent LHP Kory Behenna to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Brandon Cumpton | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Brandon Cumpton to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Zach Stewart | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Zach Stewart to a minor league contract. |
| Jul 5, 2018 | Signed | Nick Madrigal | — | Chicago White Sox | Chicago White Sox signed SS Nick Madrigal. |
| Jul 5, 2018 | Signed as free agent | James Buckelew | — | Chicago Cubs | Chicago Cubs signed free agent LHP James Buckelew to a minor league contract. |
| Jul 5, 2018 | Trade | Elniery García | Philadelphia Phillies | St. Louis Cardinals | Philadelphia Phillies traded LHP Elniery Garcia to St. Louis Cardinals for Future Considerations. |
| Jul 5, 2018 | Signed as free agent | Melky Cabrera | — | Cleveland Guardians | Cleveland Indians signed free agent OF Melky Cabrera to a minor league contract. |
| Jul 5, 2018 | Signed | Trevor Larnach | — | Minnesota Twins | Minnesota Twins signed OF Trevor Larnach. |
| Jul 5, 2018 | Signed as free agent | Casey Coleman | — | Chicago Cubs | Chicago Cubs signed free agent RHP Casey Coleman to a minor league contract. |
| Jul 5, 2018 | Signed | Davis Martin | — | Chicago White Sox | Chicago White Sox signed RHP Davis Martin. |
| Jul 5, 2018 | Signed | Jason Morgan | — | Chicago White Sox | Chicago White Sox signed RHP Jason Morgan. |
| Jul 5, 2018 | Signed | Bryce Bush | — | Chicago White Sox | Chicago White Sox signed 3B Bryce Bush. |
| Jul 5, 2018 | Signed | Justin Wilson | — | New York Yankees | New York Yankees signed RHP Justin Wilson. |
| Jul 5, 2018 | Signed | Rodney Hutchison | — | New York Yankees | New York Yankees signed RHP Rodney Hutchison. |
| Jul 5, 2018 | Released | Roberto Gómez | — | San Francisco Giants | San Francisco Giants released RHP Roberto Gomez. |
| Jul 5, 2018 | Signed | Michael Davis | — | Minnesota Twins | Minnesota Twins signed IF Michael Davis. |
| Jul 5, 2018 | Signed | Michael Grove | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Michael Grove. |
| Jul 5, 2018 | Signed | Michael Helman | — | Minnesota Twins | Minnesota Twins signed 2B Michael Helman. |
| Jul 5, 2018 | Signed as free agent | Christian Paulino | — | Kansas City Royals | Kansas City Royals signed free agent LHP Christian Paulino to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Deivy Pena | — | Kansas City Royals | Kansas City Royals signed free agent SS Deivy Pena to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Raidel Chacon | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Raidel Chacon to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Tyrone Yulie | — | New York Yankees | New York Yankees signed free agent RHP Tyrone Yulie to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Maycold Leon | — | Miami Marlins | Miami Marlins signed free agent LHP Maycold Leon to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Rhodery Diaz | — | Minnesota Twins | Minnesota Twins signed free agent CF Rhodery Diaz to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Anferny Olivo | — | Minnesota Twins | Minnesota Twins signed free agent C Anferny Olivo to a minor league contract. |
| Jul 5, 2018 | Signed | Cole Sands | — | Minnesota Twins | Minnesota Twins signed RHP Cole Sands. |
| Jul 5, 2018 | Signed as free agent | Armando Acosta | — | Boston Red Sox | Boston Red Sox signed free agent RHP Armando Acosta to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Jorge Mesa | — | Minnesota Twins | Minnesota Twins signed free agent SS Jorge Mesa to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Keyson Pulinario | — | Washington Nationals | Washington Nationals signed free agent RHP Keyson Pulinario to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Jose Rosario | — | Minnesota Twins | Minnesota Twins signed free agent 2B Jose Rosario to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Wilker Reyes | — | Minnesota Twins | Minnesota Twins signed free agent LHP Wilker Reyes to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Michael Arias | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Michael Arias to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Angel Geraldo | — | Washington Nationals | Washington Nationals signed free agent SS Angel Geraldo to a minor league contract. |
| Jul 5, 2018 | Signed as free agent | Roberto Garza | — | Athletics | Oakland Athletics signed free agent RHP Roberto Garza to a minor league contract. |
| Jul 4, 2018 | Trade | Zach Neal | Cincinnati Reds | Los Angeles Dodgers | Cincinnati Reds traded RHP Dylan Floro, RHP Zach Neal and Future Considerations to Los Angeles Dodgers for RHP James Marinan and RHP Aneurys Zabala. |
| Jul 4, 2018 | Signed as free agent | Orelvis Martinez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Orelvis Martinez to a minor league contract. |
| Jul 4, 2018 | Released | Aríel Miranda | — | Seattle Mariners | Seattle Mariners released LHP Ariel Miranda. |
| Jul 4, 2018 | Released | Felix Jorge | — | Minnesota Twins | Minnesota Twins released RHP Felix Jorge. |
| Jul 4, 2018 | Signed as free agent | Lazaro Benitez | — | Detroit Tigers | Detroit Tigers signed free agent OF Lazaro Benitez to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Rito Lugo | — | Kansas City Royals | Kansas City Royals signed free agent LHP Rito Lugo to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Andres Monzon | — | Houston Astros | Houston Astros signed free agent CF Andres Monzon to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Jaswel De Los Santos | — | Kansas City Royals | Kansas City Royals signed free agent OF Jaswel De Los Santos to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Pedro Guzman | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Pedro Guzman to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Jesus Medina | — | Minnesota Twins | Minnesota Twins signed free agent RHP Jesus Medina to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Amell Brazoban | — | Toronto Blue Jays | Toronto Blue Jays signed free agent OF Amell Brazoban to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Alexander Pena | — | Minnesota Twins | Minnesota Twins signed free agent SS Alexander Pena to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Soenni Martinez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Soenni Martinez to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Bejardi Meza | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Bejardi Meza to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Bryan Ruiz | — | Minnesota Twins | Minnesota Twins signed free agent RHP Bryan Ruiz to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Jose Rodriguez | — | Minnesota Twins | Minnesota Twins signed free agent SS Jose Rodriguez to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Jose Garcia | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Jose Garcia to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Junior Ramos | — | Toronto Blue Jays | Toronto Blue Jays signed free agent C Junior Ramos to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Yunior Lara | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Yunior Lara to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Francisco Fajardo | — | Toronto Blue Jays | Toronto Blue Jays signed free agent IF Francisco Fajardo to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Jose Caguana | — | Seattle Mariners | Seattle Mariners signed free agent C Jose Caguana to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Daniel Oliva | — | Toronto Blue Jays | Toronto Blue Jays signed free agent OF Daniel Oliva to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Emmanuel Sanchez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Emmanuel Sanchez to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Yeison Jimenez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent OF Yeison Jimenez to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Juanfer Castro | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Juanfer Castro to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Juan Martinez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Juan Martinez to a minor league contract. |
| Jul 4, 2018 | Signed as free agent | Julian Valdez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Julian Valdez to a minor league contract. |
| Jul 4, 2018 | Signed | Shea Patterson | — | Texas Rangers | Texas Rangers signed 3B Shea Patterson. |
| Jul 3, 2018 | Signed | Josh Hiatt | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Josh Hiatt. |
| Jul 3, 2018 | Signed as free agent | Malcom Nuñez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent 3B Malcom Nunez to a minor league contract. |
| Jul 3, 2018 | Signed as free agent | Victor Villanueva | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Victor Villanueva to a minor league contract. |
| Jul 3, 2018 | Signed as free agent | Ryan Goins | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 2B Ryan Goins to a minor league contract. |
| Jul 3, 2018 | Signed | Brady Singer | — | Kansas City Royals | Kansas City Royals signed RHP Brady Singer. |
| Jul 3, 2018 | Signed | Cadyn Grenier | — | Baltimore Orioles | Baltimore Orioles signed SS Cadyn Grenier. |
| Jul 3, 2018 | Signed | Bo Naylor | — | Cleveland Guardians | Cleveland Indians signed C Noah Naylor. |
| Jul 3, 2018 | Signed | Ethan Hankins | — | Cleveland Guardians | Cleveland Indians signed RHP Ethan Hankins. |
| Jul 3, 2018 | Signed | Steven Kwan | — | Cleveland Guardians | Cleveland Indians signed OF Steven Kwan. |
| Jul 3, 2018 | Signed | Korey Holland | — | Cleveland Guardians | Cleveland Indians signed OF Korey Holland. |
| Jul 3, 2018 | Signed | Mike Burrows | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Michael Burrows. |
| Jul 3, 2018 | Signed | Michael Siani | — | Cincinnati Reds | Cincinnati Reds signed OF Mike Siani. |
| Jul 3, 2018 | Signed | Deacon Liput | — | Los Angeles Dodgers | Los Angeles Dodgers signed 2B Deacon Liput. |
| Jul 3, 2018 | Signed as free agent | Kyle Wren | — | Boston Red Sox | Boston Red Sox signed free agent LF Kyle Wren to a minor league contract. |
| Jul 3, 2018 | Signed as free agent | Jose De La Cruz | — | Detroit Tigers | Detroit Tigers signed free agent OF Jose De La Cruz to a minor league contract. |
| Jul 3, 2018 | Signed as free agent | Ryan Lawlor | — | Chicago Cubs | Chicago Cubs signed free agent LHP Ryan Lawlor to a minor league contract. |
| Jul 3, 2018 | Signed as free agent | Samuel Perez | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Samuel Perez to a minor league contract. |
| Jul 3, 2018 | Signed | Jonathan India | — | Cincinnati Reds | Cincinnati Reds signed 3B Jonathan India. |
| Jul 3, 2018 | Signed | Eric Cole | — | Kansas City Royals | Kansas City Royals signed OF Eric Cole. |
| Jul 3, 2018 | Signed | Hunter Stovall | — | Colorado Rockies | Colorado Rockies signed 2B Hunter Stovall. |
| Jul 3, 2018 | Signed | John Rooney | — | Los Angeles Dodgers | Los Angeles Dodgers signed LHP John Rooney. |
| Jul 3, 2018 | Signed | Julian Smith | — | Los Angeles Dodgers | Los Angeles Dodgers signed LHP Julian Smith. |
| Jul 3, 2018 | Signed | Mason Denaburg | — | Washington Nationals | Washington Nationals signed RHP Mason Denaburg. |
| Jul 3, 2018 | Signed as free agent | Luis Morales | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Luis Morales to a minor league contract. |
| Jul 3, 2018 | Signed as free agent | Jose Ramos | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent CF Jose Ramos to a minor league contract. |
| Jul 3, 2018 | Signed as free agent | Brayan Buelvas | — | Athletics | Oakland Athletics signed free agent CF Brayan Buelvas to a minor league contract. |
| Jul 3, 2018 | Signed as free agent | Bradly Encarnacion | — | New York Mets | New York Mets signed free agent SS Bradly Encarnacion to a minor league contract. |
| Jul 3, 2018 | Signed as free agent | Wuilliam Hernandez | — | Texas Rangers | Texas Rangers signed free agent RHP Wuilliam Hernandez to a minor league contract. |
| Jul 3, 2018 | Signed as free agent | Juan Pizarro | — | Toronto Blue Jays | Toronto Blue Jays signed free agent CF Juan Pizarro to a minor league contract. |
| Jul 3, 2018 | Signed as free agent | Felix Salguera | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Felix Salguera to a minor league contract. |
| Jul 3, 2018 | Signed as free agent | George Janca | — | Texas Rangers | Texas Rangers signed free agent 3B George Janca to a minor league contract. |
| Jul 3, 2018 | Signed | Wyatt Sparks | — | Texas Rangers | Texas Rangers signed RHP Wyatt Sparks. |
| Jul 3, 2018 | Signed as free agent | Alex De Jesus | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent IF Alex De Jesus to a minor league contract. |
| Jul 2, 2018 | Signed | K.V. Edwards | — | Tampa Bay Rays | Tampa Bay Rays signed SS K.V. Edwards. |
| Jul 2, 2018 | Trade | Lorenzo Cedrola | Boston Red Sox | Cincinnati Reds | Boston Red Sox traded LF Lorenzo Cedrola to Cincinnati Reds for Future Considerations. |
| Jul 2, 2018 | Signed as free agent | Marco Luciano | — | San Francisco Giants | San Francisco Giants signed free agent SS Marco Luciano to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jairo Pomares | — | San Francisco Giants | San Francisco Giants signed free agent OF Jairo Pomares to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Matos | — | San Francisco Giants | San Francisco Giants signed free agent OF Luis Matos to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Roberto Monegro | — | San Francisco Giants | San Francisco Giants signed free agent SS Roberto Monegro to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Melvin Marte | — | San Francisco Giants | San Francisco Giants signed free agent RHP Melvin Marte to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Victor Bericoto | — | San Francisco Giants | San Francisco Giants signed free agent CF Victor Bericoto to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Odue Civada | — | San Francisco Giants | San Francisco Giants signed free agent RHP Odue Civada to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Eduardo Jaramillo | — | San Francisco Giants | San Francisco Giants signed free agent C Eduardo Jaramillo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Yeiver Torrealba | — | San Francisco Giants | San Francisco Giants signed free agent 2B Yeiver Torrealba to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Anthony Torres | — | San Francisco Giants | San Francisco Giants signed free agent LHP Anthony Torres to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Gabriel Rodriguez | — | Cleveland Guardians | Cleveland Indians signed free agent SS Gabriel Rodriguez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Junior Sanquintin | — | Cleveland Guardians | Cleveland Indians signed free agent SS Junior Sanquintin to a minor league contract. |
| Jul 2, 2018 | Signed | Angel Martínez | — | Cleveland Guardians | Cleveland Indians signed SS Angel Martinez. |
| Jul 2, 2018 | Signed as free agent | Dayan Frias | — | Cleveland Guardians | Cleveland Indians signed free agent IF Dayan Frias to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Ostos | — | Cleveland Guardians | Cleveland Indians signed free agent OF Luis Ostos to a minor league contract. |
| Jul 2, 2018 | Released | Troy Scribner | — | Arizona Diamondbacks | Arizona Diamondbacks released RHP Troy Scribner. |
| Jul 2, 2018 | Signed as free agent | Jesus Lara | — | Cleveland Guardians | Cleveland Indians signed free agent IF Jesus Lara to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Sterling Romero | — | Cleveland Guardians | Cleveland Indians signed free agent OF Sterling Romero to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Ayendy Ortiz | — | Houston Astros | Houston Astros signed free agent SS Ayendy Ortiz to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Carlos Calderon | — | Houston Astros | Houston Astros signed free agent RHP Carlos Calderon to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Cristian Gonzalez | — | Houston Astros | Houston Astros signed free agent SS Cristian Gonzalez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Daniel Pacheco | — | Houston Astros | Houston Astros signed free agent RHP Daniel Pacheco to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Frank Perez | — | Houston Astros | Houston Astros signed free agent OF Frank Perez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Danny Subero | — | Houston Astros | Houston Astros signed free agent RHP Danny Subero to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jairo Jose | — | Houston Astros | Houston Astros signed free agent OF Jairo Jose to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jesus Liranzo | — | Houston Astros | Houston Astros signed free agent OF Jesus Liranzo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Johangel Ramirez | — | Houston Astros | Houston Astros signed free agent RHP Johangel Ramirez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Miguel Palma | — | Houston Astros | Houston Astros signed free agent C Miguel Palma to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Reimy Beltre | — | Houston Astros | Houston Astros signed free agent RHP Reimy Beltre to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Tomas Ramirez | — | Houston Astros | Houston Astros signed free agent OF Tomas Ramirez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Yohander Martinez | — | Houston Astros | Houston Astros signed free agent SS Yohander Martinez to a minor league contract. |
| Jul 2, 2018 | Signed | Grant Koch | — | Pittsburgh Pirates | Pittsburgh Pirates signed C Grant Koch. |
| Jul 2, 2018 | Signed | Michael Gretler | — | Pittsburgh Pirates | Pittsburgh Pirates signed 3B Mike Gretler. |
| Jul 2, 2018 | Signed as free agent | Erick Carrasco | — | Miami Marlins | Miami Marlins signed free agent LHP Erick Carrasco to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Ene Leon | — | Miami Marlins | Miami Marlins signed free agent C Ene Leon to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jhonny Melenciano | — | Miami Marlins | Miami Marlins signed free agent CF Jhonny Melenciano to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Yoelvis Sanchez | — | Miami Marlins | Miami Marlins signed free agent CF Yoelvis Sanchez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Noelvi Marte | — | Seattle Mariners | Seattle Mariners signed free agent IF Noelvi Marte to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jeisel Acosta | — | Washington Nationals | Washington Nationals signed free agent C Jeisel Acosta to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Yeuri Amparo | — | Washington Nationals | Washington Nationals signed free agent OF Yeuri Amparo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Isan Castillo | — | Washington Nationals | Washington Nationals signed free agent SS Isan Castillo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jeremy De La Rosa | — | Washington Nationals | Washington Nationals signed free agent OF Jeremy De La Rosa to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Dariel Cotes | — | Washington Nationals | Washington Nationals signed free agent CF Dariel Cotes to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Raymi Gomez | — | Washington Nationals | Washington Nationals signed free agent OF Raymi Gomez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Bernardo Hiraldo | — | Washington Nationals | Washington Nationals signed free agent RHP Bernardo Hiraldo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Jimenez | — | Washington Nationals | Washington Nationals signed free agent RHP Luis Jimenez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Daniel Marte | — | Washington Nationals | Washington Nationals signed free agent CF Daniel Marte to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Edwin Mercedes | — | Washington Nationals | Washington Nationals signed free agent C Edwin Mercedes to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Yoander Rivero | — | Washington Nationals | Washington Nationals signed free agent SS Yoander Rivero to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Erick Tejeda | — | Washington Nationals | Washington Nationals signed free agent IF Erick Tejeda to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Mercedes | — | Washington Nationals | Washington Nationals signed free agent RHP Jose Mercedes to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Cedeno | — | Washington Nationals | Washington Nationals signed free agent RHP Jose Cedeno to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Kevin Rodriguez | — | Washington Nationals | Washington Nationals signed free agent RHP Kevin Rodriguez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Atencio | — | Washington Nationals | Washington Nationals signed free agent RHP Jose Atencio to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Delkis Basanta | — | Washington Nationals | Washington Nationals signed free agent CF Delkis Basanta to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Raul Campos | — | Miami Marlins | Miami Marlins signed free agent SS Raul Campos to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Isaac De León | — | Miami Marlins | Miami Marlins signed free agent SS Isaac De Leon to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Lopez | — | Miami Marlins | Miami Marlins signed free agent RHP Luis Lopez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jorge Mercedes | — | Miami Marlins | Miami Marlins signed free agent RHP Jorge Mercedes to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Cristhian Rodriguez | — | Miami Marlins | Miami Marlins signed free agent SS Cristhian Rodriguez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Aquino | — | Seattle Mariners | Seattle Mariners signed free agent LHP Jose Aquino to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Asdrubal Bueno | — | Seattle Mariners | Seattle Mariners signed free agent SS Asdrubal Bueno to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Chevalier | — | Seattle Mariners | Seattle Mariners signed free agent IF Luis Chevalier to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jonatan Clase | — | Seattle Mariners | Seattle Mariners signed free agent OF Jonathan Clase to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Abdiel Medina | — | Seattle Mariners | Seattle Mariners signed free agent RHP Abdiel Medina to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Gabriel Moncada | — | Seattle Mariners | Seattle Mariners signed free agent 1B Gabe Moncada to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Wilton Perez | — | Seattle Mariners | Seattle Mariners signed free agent RHP Wilton Perez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Gabriel Hernandez | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Gabriel Hernandez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Darwin Moreno | — | Los Angeles Angels | Los Angeles Angels signed free agent CF Darwin Moreno to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Nunez | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Luis Nunez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jean Puntiel | — | Los Angeles Angels | Los Angeles Angels signed free agent SS Jean Puntiel to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Daniel Rojas | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Daniel Rojas to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Roelis Taveras | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Roelis Taveras to a minor league contract. |
| Jul 2, 2018 | Signed | Jackson Kowar | — | Kansas City Royals | Kansas City Royals signed RHP Jackson Kowar. |
| Jul 2, 2018 | Signed | Xavier Valentin | — | Texas Rangers | Texas Rangers signed C Xavier Valentin. |
| Jul 2, 2018 | Signed | Sincere Smith | — | New York Yankees | New York Yankees signed SS Sincere Smith. |
| Jul 2, 2018 | Signed as free agent | Fraicy Breton | — | Kansas City Royals | Kansas City Royals signed free agent LHP Fraicy Breton to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Esmil Torres | — | Cincinnati Reds | Cincinnati Reds signed free agent IF Esmil Torres to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Mauricio Bascunan | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Mauricio Bascunan to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Bohorquez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jose Bohorquez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Ricardo Caldera | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Ricardo Caldera to a minor league contract. |
| Jul 2, 2018 | Signed | Cody Farhat | — | Cleveland Guardians | Cleveland Indians signed OF Cody Farhat. |
| Jul 2, 2018 | Signed as free agent | Angel Colina | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Angel Colina to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Dairon Cuevas | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent SS Dairon Cuevas to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Learsi Delgado | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent SS Learsi Delgado to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jeferson Espinal | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent CF Jeferson Espinal to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Cristian Estrella | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Cristian Estrella to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Asdrubal Martinez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent CF Asdrubal Martinez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Teofilo Mendez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent SS Teofilo Mendez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Ronald Roman | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Ronald Roman to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Edward Romero | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent SS Edward Romero to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Mario Mendez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Mario Mendez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Rubio | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent SS Luis Rubio to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Aderlyn Silverio | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Aderlyn Silverio to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Carlos Telleria | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Carlos Telleria to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Daniel Torres | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent SS Daniel Torres to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Michael James | — | Colorado Rockies | Colorado Rockies signed free agent SS Michael James to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Albert Feliz | — | Boston Red Sox | Boston Red Sox signed free agent OF Albert Feliz to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Alexeis Azuaje | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 2B Alexeis Azuaje to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Pedro Mota | — | Colorado Rockies | Colorado Rockies signed free agent SS Pedro Mota to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Wilson Gherbaz | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Wilson Gherbaz to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Eiberson Castellano | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Eiberson Castellano to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Victor Diaz | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Victor Diaz to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Reiberth Gil | — | Philadelphia Phillies | Philadelphia Phillies signed free agent CF Reiberth Gil to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Neyker Ibarra | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Neyker Ibarra to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Andrick Nava | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Andrick Nava to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jonathan Rivas | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Jonathan Rivas to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Vegas | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Luis Vegas to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Javier Vina | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Javier Vina to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Carlos Fernandez | — | Seattle Mariners | Seattle Mariners signed free agent SS Carlos Fernandez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Mike Spooner | — | Cincinnati Reds | Cincinnati Reds signed free agent OF Mike Spooner to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Angel Bastardo | — | Boston Red Sox | Boston Red Sox signed free agent RHP Angel Bastardo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Alixandri Alvarez | — | Boston Red Sox | Boston Red Sox signed free agent SS Alixandri Alvarez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Imanol Contreras | — | Boston Red Sox | Boston Red Sox signed free agent SS Imanol Contreras to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Gary David | — | Toronto Blue Jays | Toronto Blue Jays signed free agent C Gary David to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Efren Diaz | — | Boston Red Sox | Boston Red Sox signed free agent RHP Efren Diaz to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Wikelman González | — | Boston Red Sox | Boston Red Sox signed free agent RHP Wilkelman Gonzalez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Gabriel Jackson | — | Boston Red Sox | Boston Red Sox signed free agent RHP Gabriel Jackson to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Naysbel Marcano | — | Boston Red Sox | Boston Red Sox signed free agent C Naysbel Marcano to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Bryan Gonzalez | — | Boston Red Sox | Boston Red Sox signed free agent OF Bryan Gonzalez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Axel James | — | Boston Red Sox | Boston Red Sox signed free agent SS Axel James to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Claudio Ochoa | — | Boston Red Sox | Boston Red Sox signed free agent RHP Claudio Ochoa to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Eddinson Paulino | — | Boston Red Sox | Boston Red Sox signed free agent SS Eddinson Paulino to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Andy Pena | — | Boston Red Sox | Boston Red Sox signed free agent C Andy Pena to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Andres Ortuno | — | Boston Red Sox | Boston Red Sox signed free agent RHP Andres Ortuno to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Elio Prado | — | Boston Red Sox | Boston Red Sox signed free agent CF Elio Prado to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Carlos Reyes | — | Boston Red Sox | Boston Red Sox signed free agent RHP Carlos Reyes to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Noelberth Romero | — | Boston Red Sox | Boston Red Sox signed free agent SS Noelberth Romero to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Giancarlos Santana | — | Boston Red Sox | Boston Red Sox signed free agent OF Giancarlos Santana to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Eduardo Vaughan | — | Boston Red Sox | Boston Red Sox signed free agent CF Eduardo Vaughan to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Alex Zapete | — | Boston Red Sox | Boston Red Sox signed free agent 3B Alex Zapete to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Diego Cartaya | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Diego Cartaya to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Misael Urbina | — | Minnesota Twins | Minnesota Twins signed free agent OF Misael Urbina to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Richard Gallardo | — | Chicago Cubs | Chicago Cubs signed free agent RHP Richard Gallardo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Starlyn Castillo | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Starlyn Castillo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Antonio Gomez | — | New York Yankees | New York Yankees signed free agent C Antonio Gomez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Francisco Alvarez | — | New York Mets | New York Mets signed free agent C Francisco Alvarez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Alvin Guzman | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent CF Alvin Guzman to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Eduarqui Fernandez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent OF Eduarqui Fernandez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Adinso Reyes | — | Detroit Tigers | Detroit Tigers signed free agent IF Adinso Reyes to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Rodriguez | — | Texas Rangers | Texas Rangers signed free agent C Jose Rodriguez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Alejandro Pie | — | Tampa Bay Rays | Tampa Bay Rays signed free agent SS Alejandro Pie to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Eduardo Lopez | — | Boston Red Sox | Boston Red Sox signed free agent OF Eduardo Lopez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Freddy Valdez | — | New York Mets | New York Mets signed free agent RF Freddy Valdez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Branlyn Jaraba | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 3B Branlyn Jaraba to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Joel Machado | — | Chicago Cubs | Chicago Cubs signed free agent LHP Joel Machado to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Denny Larrondo | — | New York Yankees | New York Yankees signed free agent RHP Denny Larrondo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jerming Rosario | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Jerming Rosario to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Warming Bernabel | — | Colorado Rockies | Colorado Rockies signed free agent SS Warming Bernabel to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Ronald Pereira | — | Colorado Rockies | Colorado Rockies signed free agent RHP Ronald Pereira to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Anthony Espinoza | — | Chicago White Sox | Chicago White Sox signed free agent SS Anthony Espinoza to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Omar Diaz | — | Houston Astros | Houston Astros signed free agent OF Omar Diaz to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Horacio Andujar | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Horacio Andujar to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Juan De la Cruz | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Juan De la Cruz to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Eli Moron | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Eli Moron to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Cristian Peralta | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Cristian Peralta to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Samuel Ruben | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Samuel Ruben to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Yohendrick Piñango | — | Chicago Cubs | Chicago Cubs signed free agent OF Yohendrick Pinango to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Aquino | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Luis Aquino to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Mey | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Luis Mey to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Roberto Ros | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Roberto Ros to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Fraudy Rodriguez | — | Cincinnati Reds | Cincinnati Reds signed free agent C Fraudy Rodriguez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Cabrera | — | Cincinnati Reds | Cincinnati Reds signed free agent IF Luis Cabrera to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Elly De La Cruz | — | Cincinnati Reds | Cincinnati Reds signed free agent IF Elly De La Cruz to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Ilvin Fernandez | — | Cincinnati Reds | Cincinnati Reds signed free agent SS Ilvin Fernandez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Thomas Lora | — | Cincinnati Reds | Cincinnati Reds signed free agent IF Thomas Lora to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Lenniell Perez | — | Cincinnati Reds | Cincinnati Reds signed free agent IF Lenniell Perez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Junior Tamares | — | Cincinnati Reds | Cincinnati Reds signed free agent OF Junior Tamares to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jeferson Geraldo | — | Cincinnati Reds | Cincinnati Reds signed free agent OF Jefferson Geraldo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Dalton Hoiles | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Dalton Hoiles to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Richardson Jimenez | — | Boston Red Sox | Boston Red Sox signed free agent RHP Richardson Jimenez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Yulis Hernandez | — | Boston Red Sox | Boston Red Sox signed free agent SS Yulis Hernandez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Abner Uribe | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Abner Uribe to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Marcos Betancourt | — | Athletics | Oakland Athletics signed free agent C Marcos Betancourt to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Endy Rodríguez | — | New York Mets | New York Mets signed free agent C Endy Rodriguez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Robin Vazquez | — | Athletics | Oakland Athletics signed free agent RHP Robin Vazquez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Dilone | — | Atlanta Braves | Atlanta Braves signed free agent SS Jose Dilone to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Cesari Moreno | — | Atlanta Braves | Atlanta Braves signed free agent RHP Cesari Moreno to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jordano Perez | — | Atlanta Braves | Atlanta Braves signed free agent RHP Jordano Perez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Francisco Floyd | — | Atlanta Braves | Atlanta Braves signed free agent SS Francisco Floyd to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Osiris Sierra | — | Atlanta Braves | Atlanta Braves signed free agent LHP Osiris Sierra to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Vargas | — | Atlanta Braves | Atlanta Braves signed free agent RHP Luis Vargas to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Alexander Then | — | Atlanta Braves | Atlanta Braves signed free agent SS Alexander Then to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Frankelvin Vidal | — | Atlanta Braves | Atlanta Braves signed free agent RHP Frankelvin Vidal to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Gabriel Barbosa | — | Colorado Rockies | Colorado Rockies signed free agent RHP Gabriel Barbosa to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jauri Custodio | — | Colorado Rockies | Colorado Rockies signed free agent CF Jauri Custodio to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Robert Mendoza | — | Colorado Rockies | Colorado Rockies signed free agent C Robert Mendoza to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Yeferson Pantoja | — | Colorado Rockies | Colorado Rockies signed free agent RHP Yeferson Pantoja to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Francis Rivera | — | Colorado Rockies | Colorado Rockies signed free agent RHP Francis Rivera to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Aiverson Rodriguez | — | Colorado Rockies | Colorado Rockies signed free agent SS Aiverson Rodriguez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Angel Valencia | — | Colorado Rockies | Colorado Rockies signed free agent RHP Angel Valencia to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Alberto Bernal | — | Chicago White Sox | Chicago White Sox signed free agent 1B Alberto Bernal to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Bryan Ramos | — | Chicago White Sox | Chicago White Sox signed free agent 3B Bryan Ramos to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Pineda | — | Chicago White Sox | Chicago White Sox signed free agent C Luis Pineda to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Yoan Bravo | — | Detroit Tigers | Detroit Tigers signed free agent SS Yoan Bravo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Cristian Calzadilla | — | Detroit Tigers | Detroit Tigers signed free agent C Cristian Calzadilla to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Angel Cruz | — | Detroit Tigers | Detroit Tigers signed free agent IF Angel Cruz to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Geury Estevez | — | Detroit Tigers | Detroit Tigers signed free agent SS Geury Estevez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Peraza | — | Detroit Tigers | Detroit Tigers signed free agent RHP Jose Peraza to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Rolando Sirit | — | Detroit Tigers | Detroit Tigers signed free agent RHP Rolando Sirit to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Juan Polanco | — | Detroit Tigers | Detroit Tigers signed free agent RHP Juan Polanco to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Alexis Ulloa | — | Detroit Tigers | Detroit Tigers signed free agent IF Alexis Ulloa to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Cal Maduro | — | Kansas City Royals | Kansas City Royals signed free agent RHP Cal Maduro to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Wilmin Candelario | — | Kansas City Royals | Kansas City Royals signed free agent SS Wilmin Candelario to a minor league contract. |
| Jul 2, 2018 | Signed | J.P. France | — | Houston Astros | Houston Astros signed RHP J.P. France. |
| Jul 2, 2018 | Signed | Jacob Billingsley | — | Houston Astros | Houston Astros signed RHP Jacob Billingsley. |
| Jul 2, 2018 | Signed as free agent | Harold Diaz | — | Chicago White Sox | Chicago White Sox signed free agent SS Harold Diaz to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jax Biggers | — | Texas Rangers | Texas Rangers signed free agent SS Jax Biggers to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Espiritu | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Jose Espiritu to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Enmanuel Pio | — | Colorado Rockies | Colorado Rockies signed free agent RHP Enmanuel Pio to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Wilker Velasquez | — | New York Mets | New York Mets signed free agent SS Wilker Velasquez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Pedro Cordero | — | Kansas City Royals | Kansas City Royals signed free agent RHP Pedro Cordero to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Frandy Cuevas | — | Kansas City Royals | Kansas City Royals signed free agent LHP Frandy Cuevas to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis De La Rosa | — | Kansas City Royals | Kansas City Royals signed free agent RHP Luis De La Rosa to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Omar Florentino | — | Kansas City Royals | Kansas City Royals signed free agent SS Omar Florentino to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Freites | — | Kansas City Royals | Kansas City Royals signed free agent OF Jose Freites to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Igor Avila | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Igor Avila to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Miguel Droz | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent SS Miguel Droz to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Francisco Feliz | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent IF Francisco Feliz to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Christian Hidalgo | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Christian Hidalgo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Gregory Pereira | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Gregory Pereira to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Rafael Tua | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Rafael Tua to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Christian Suarez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Christian Suarez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Izturis | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent SS Luis Izturis to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jeremi Rodriguez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Jeremi Rodriguez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Erys Bautista | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LF Erys Bautista to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jhonnys Cabrera | — | Milwaukee Brewers | Milwaukee Brewers signed free agent C Jhonnys Cabrera to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Joneiker Ponce de Leon | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 2B Joneiker Ponce de Leon to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Angel Bautista | — | Milwaukee Brewers | Milwaukee Brewers signed free agent SS Angel Bautista to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Rafael Martinez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent CF Rafael Martinez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Mario Perez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Mario Perez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Carlos Roa | — | Milwaukee Brewers | Milwaukee Brewers signed free agent SS Carlos Roa to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Bryan Nino | — | Milwaukee Brewers | Milwaukee Brewers signed free agent CF Bryan Nino to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Hector Acevedo | — | Minnesota Twins | Minnesota Twins signed free agent C Hector Acevedo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Tomas Reyes | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Tomas Reyes to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Adauri Vicente | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Adauri Vicente to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Kevin Hernandez | — | New York Mets | New York Mets signed free agent LHP Kevin Hernandez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jhon Franco | — | New York Mets | New York Mets signed free agent RHP Jhon Franco to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Axcel Peralta | — | San Diego Padres | San Diego Padres signed free agent OF Axcel Peralta to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Neraldo Catalina | — | New York Mets | New York Mets signed free agent RHP Neraldo Catalina to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Reginald Dowston | — | San Diego Padres | San Diego Padres signed free agent CF Reginald Dowston to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jhan Zambrano | — | Texas Rangers | Texas Rangers signed free agent RHP Jhan Zambrano to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Javier Atencio | — | New York Mets | New York Mets signed free agent LHP Javier Atencio to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Bladimir Ramirez | — | Texas Rangers | Texas Rangers signed free agent RHP Bladimir Ramirez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Dayro Perez | — | New York Yankees | New York Yankees signed free agent SS Dayro Perez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Eliazer Montero | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent SS Eliazer Montero to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Josttin Diaz | — | San Diego Padres | San Diego Padres signed free agent 2B Josttin Diaz to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Ignacio Radney | — | New York Yankees | New York Yankees signed free agent RHP Ignacio Radney to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Willmert Paula | — | San Diego Padres | San Diego Padres signed free agent IF Willmert Paula to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Willfrann Astudillo | — | Toronto Blue Jays | Toronto Blue Jays signed free agent DH Willfrann Astudillo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Frankely Hurtado | — | Texas Rangers | Texas Rangers signed free agent CF Frankely Hurtado to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Nerwilian Cedeño | — | San Diego Padres | San Diego Padres signed free agent 3B Nerwilian Cedeno to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Osvaldo Gavilan | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent CF Osvaldo Gavilan to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | D'Vaughn Knowles | — | New York Yankees | New York Yankees signed free agent CF D'Vaughn Knowles to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Junior Paniagua | — | Texas Rangers | Texas Rangers signed free agent SS Junior Paniagua to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | J.J. D'Orazio | — | Toronto Blue Jays | Toronto Blue Jays signed free agent C Javier D'Orazio to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Gonzalez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Jose Gonzalez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Euribiel Angeles | — | San Diego Padres | San Diego Padres signed free agent IF Euribiel Angeles to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Bryan Dum | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LHP Bryan Dum to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Maikol Escotto | — | New York Yankees | New York Yankees signed free agent SS Maikol Escotto to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Deivis Nadal | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent IF Deivis Nadal to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Joiquer Guacare | — | Texas Rangers | Texas Rangers signed free agent SS Joiquer Guacare to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Mario Paiva | — | New York Mets | New York Mets signed free agent OF Mario Paiva to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Kevyn Camacho | — | New York Yankees | New York Yankees signed free agent C Kevyn Camacho to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Gerald Garcia | — | Athletics | Oakland Athletics signed free agent LHP Gerald Garcia to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Brandon Sanchez | — | New York Mets | New York Mets signed free agent LHP Brandon Sanchez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Abner King | — | Toronto Blue Jays | Toronto Blue Jays signed free agent OF Abner King to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Mauro Bonifacio | — | New York Yankees | New York Yankees signed free agent RF Mauro Bonifacio to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Arthur Sabino | — | Texas Rangers | Texas Rangers signed free agent RHP Arthur Sabino to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Orlando Chivilli | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent SS Orlando Chivilli to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Neifi Antunez | — | San Diego Padres | San Diego Padres signed free agent 2B Neifi Antunez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Justino Dominguez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Justino Dominguez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jessel Soto | — | San Diego Padres | San Diego Padres signed free agent RHP Jessel Soto to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Christopher Familia | — | New York Yankees | New York Yankees signed free agent CF Christopher Familia to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Velez | — | San Diego Padres | San Diego Padres signed free agent CF Jose Velez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Starling Perez | — | New York Yankees | New York Yankees signed free agent RHP Starling Perez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Listher Sosa | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Listher Sosa to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Alisson Del Orbe | — | Texas Rangers | Texas Rangers signed free agent SS Alisson Del Orbe to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Eddyson Moreno | — | San Diego Padres | San Diego Padres signed free agent CF Eddyson Moreno to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Albert Fabian | — | San Diego Padres | San Diego Padres signed free agent OF Albert Fabian to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Marcos Cabrera | — | New York Yankees | New York Yankees signed free agent SS Marcos Cabrera to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Gustavo Gutierrez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent IF Gustavo Gutierrez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Miguel Toribio | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Miguel Toribio to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Abel Noguera | — | Texas Rangers | Texas Rangers signed free agent C Abel Noguera to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Juan Jerez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent IF Juan Jerez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Johiner Arguinzones | — | Texas Rangers | Texas Rangers signed free agent C Johiner Arguinzones to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jeury Corona | — | Philadelphia Phillies | Philadelphia Phillies signed free agent OF Jeury Corona to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jhonny Duran | — | Texas Rangers | Texas Rangers signed free agent RHP Jhonny Duran to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jairo Iriarte | — | San Diego Padres | San Diego Padres signed free agent RHP Jairo Iriarte to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Colmenares | — | New York Yankees | New York Yankees signed free agent SS Jose Colmenares to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jorman Gonzalez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Jorman Gonzalez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Manuel Avila | — | San Diego Padres | San Diego Padres signed free agent RHP Manuel Avila to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Charlis Aquino | — | San Diego Padres | San Diego Padres signed free agent SS Charlis Aquino to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Wilfredo Tovar | — | San Diego Padres | San Diego Padres signed free agent C Wilfredo Tovar to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jose Berroa | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent CF Jose Berroa to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Daniel Gonzalez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LHP Daniel Gonzalez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Tello | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent CF Luis Tello to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Orlando Gil | — | Texas Rangers | Texas Rangers signed free agent RHP Orlando Gil to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Ramon Martinez | — | Athletics | Oakland Athletics signed free agent OF Ramon Martinez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Dariel Lopez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent SS Dariel Lopez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Zambrano | — | Texas Rangers | Texas Rangers signed free agent CF Luis Zambrano to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Wilgenis Alvarado | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Wilgenis Alvarado to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Reyber Bermudez | — | Texas Rangers | Texas Rangers signed free agent SS Reyber Bermudez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Joel Blanco | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Joel Blanco to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Nicolas Garcia | — | New York Yankees | New York Yankees signed free agent C Nicolas Garcia to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Julio Ayola | — | Texas Rangers | Texas Rangers signed free agent RHP Julio Ayola to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Victor Duarte | — | San Diego Padres | San Diego Padres signed free agent IF Victor Duarte to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jhonny Ventura | — | New York Mets | New York Mets signed free agent OF Jhonny Ventura to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Eduard Hidalgo | — | San Diego Padres | San Diego Padres signed free agent OF Eduard Hidalgo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Rodolfo Nolasco | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Rodolfo Nolasco to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Yaifer Perdomo | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Yaifer Perdomo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Castillo | — | New York Mets | New York Mets signed free agent SS Luis Castillo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Johan Lopez | — | Texas Rangers | Texas Rangers signed free agent CF Johan Lopez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Rafael Severino | — | New York Yankees | New York Yankees signed free agent RHP Rafael Severino to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Adrian Mendez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Adrian Mendez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luisangel Acuña | — | Texas Rangers | Texas Rangers signed free agent SS Luisangel Acuna to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Eudys Carrasco | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent SS Eudys Carrasco to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Anthony Molina | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Anthony Molina to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Carlos Vergara | — | San Diego Padres | San Diego Padres signed free agent OF Carlos Vergara to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Adrian Montero | — | Toronto Blue Jays | Toronto Blue Jays signed free agent IF Adrian Montero to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Juan Carela | — | New York Yankees | New York Yankees signed free agent RHP Juan Carela to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Rayber Romero | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 2B Rayber Romero to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Leonel Callez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent IF Leonel Callez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Edwin Rojas | — | San Diego Padres | San Diego Padres signed free agent OF Edwin Rojas to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Leandro Gonzalez | — | Texas Rangers | Texas Rangers signed free agent CF Leandro Gonzalez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Emmanuel Rodriguez | — | San Diego Padres | San Diego Padres signed free agent OF Emmanuel Rodriguez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Miguel Vargas | — | New York Yankees | New York Yankees signed free agent LHP Miguel Vargas to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Jesus Rodriguez | — | New York Yankees | New York Yankees signed free agent C Jesus Rodriguez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Luis Talavera | — | Boston Red Sox | Boston Red Sox signed free agent RHP Luis Talavera to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Estanli Castillo | — | Tampa Bay Rays | Tampa Bay Rays signed free agent OF Estanli Castillo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Rainer Polonius | — | Tampa Bay Rays | Tampa Bay Rays signed free agent SS Rainer Polonius to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Ryson Polonius | — | Tampa Bay Rays | Tampa Bay Rays signed free agent SS Ryson Polonius to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Daury Del Rosario | — | Tampa Bay Rays | Tampa Bay Rays signed free agent SS Daury Del Rosario to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Joalbert Angulo | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Joalbert Angulo to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Wilmer Alcantara | — | Cincinnati Reds | Cincinnati Reds signed free agent OF Wilmer Alcantara to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Sergio Campana | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Sergio Campana to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Abraham Calzadilla | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Abraham Calzadilla to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Diomede Sierra | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Diomede Sierra to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Juan Guerrero | — | Colorado Rockies | Colorado Rockies signed free agent SS Juan Guerrero to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Ender Avendano | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent SS Ender Avendano to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Alex Ramirez | — | San Diego Padres | San Diego Padres signed free agent C Alex Ramirez to a minor league contract. |
| Jul 2, 2018 | Signed as free agent | Aaron Peniche | — | San Francisco Giants | San Francisco Giants signed free agent LHP Aaron Peniche to a minor league contract. |
| Jul 2, 2018 | Signed | Noah Davis | — | Cincinnati Reds | Cincinnati Reds signed RHP Noah Davis. |
| Jul 1, 2018 | Released | Shawn Morimando | — | Cleveland Guardians | Cleveland Indians released LHP Shawn Morimando. |
| Jul 1, 2018 | Signed | Ryan Weathers | — | San Diego Padres | San Diego Padres signed LHP Ryan Weathers. |
| Jul 1, 2018 | Signed | Clayton Chatham | — | Los Angeles Angels | Los Angeles Angels signed RHP Clayton Chatham. |
| Jun 30, 2018 | Trade | Joe Hudson | Cincinnati Reds | Los Angeles Angels | Cincinnati Reds traded C Joe Hudson to Los Angeles Angels for cash. |
| Jun 30, 2018 | Signed as free agent | Mike Broadway | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Mike Broadway to a minor league contract. |
| Jun 30, 2018 | Signed as free agent | Alec Rennard | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Alec Rennard to a minor league contract. |
| Jun 30, 2018 | Signed | Andy McGuire | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Andy McGuire. |
| Jun 30, 2018 | Signed | AJ Graffanino | — | Atlanta Braves | Atlanta Braves signed SS AJ Graffanino. |
| Jun 30, 2018 | Signed | Michael Brettell | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Mike Brettell. |
| Jun 30, 2018 | Signed | Jose Quezada | — | San Diego Padres | San Diego Padres signed RHP Jose Quezada. |
| Jun 30, 2018 | Signed | Grant Little | — | San Diego Padres | San Diego Padres signed OF Grant Little. |
| Jun 30, 2018 | Signed | Jordyn Adams | — | Los Angeles Angels | Los Angeles Angels signed OF Jordyn Adams. |
| Jun 30, 2018 | Signed | L.T. Tolbert | — | Arizona Diamondbacks | Arizona Diamondbacks signed SS L.T. Tolbert. |
| Jun 30, 2018 | Signed | Connor Van Scoyoc | — | Los Angeles Angels | Los Angeles Angels signed RHP Connor Van Scoyoc. |
| Jun 29, 2018 | Signed | Keylan Killgore | — | Philadelphia Phillies | Philadelphia Phillies signed LHP Keylan Killgore. |
| Jun 29, 2018 | Signed | Reid Schaller | — | Washington Nationals | Washington Nationals signed RHP Reid Schaller. |
| Jun 29, 2018 | Signed | Chandler Day | — | Washington Nationals | Washington Nationals signed RHP Chandler Day. |
| Jun 29, 2018 | Signed | Zack Gahagan | — | St. Louis Cardinals | St. Louis Cardinals signed SS Zack Gahagan. |
| Jun 29, 2018 | Signed | Alex Vesia | — | Miami Marlins | Miami Marlins signed LHP Alex Vesia. |
| Jun 29, 2018 | Signed as free agent | Kevin Martir | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Kevin Martir to a minor league contract. |
| Jun 29, 2018 | Signed | Zach Rheams | — | New York Mets | New York Mets signed LF Zach Rheams. |
| Jun 29, 2018 | Signed as free agent | Mike Alescio | — | Milwaukee Brewers | Milwaukee Brewers signed free agent C Mike Alescio to a minor league contract. |
| Jun 29, 2018 | Signed | Madison Stokes | — | Philadelphia Phillies | Philadelphia Phillies signed SS Madison Stokes. |
| Jun 29, 2018 | Signed | Zach Neff | — | Minnesota Twins | Minnesota Twins signed LHP Zach Neff. |
| Jun 29, 2018 | Signed as free agent | Yesi Medina | — | Kansas City Royals | Kansas City Royals signed free agent C Yesi Medina to a minor league contract. |
| Jun 29, 2018 | Signed | Brett Daniels | — | Houston Astros | Houston Astros signed RHP Brett Daniels. |
| Jun 29, 2018 | Signed | Carson Shaddy | — | Washington Nationals | Washington Nationals signed 2B Carson Shaddy. |
| Jun 29, 2018 | Signed | Carson Shaddy | — | Washington Nationals | Washington Nationals signed 2B Carson Shaddy. |
| Jun 29, 2018 | Signed | Tristan Beck | — | Atlanta Braves | Atlanta Braves signed RHP Tristan Beck. |
| Jun 29, 2018 | Signed as free agent | Christian Meister | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Christian Meister to a minor league contract. |
| Jun 29, 2018 | Signed | Nick Horvath | — | Baltimore Orioles | Baltimore Orioles signed OF Nick Horvath. |
| Jun 29, 2018 | Signed | Rylan Kaufman | — | Kansas City Royals | Kansas City Royals signed LHP Rylan Kaufman. |
| Jun 28, 2018 | Signed as free agent | Mitchell Hansen | — | New York Yankees | New York Yankees signed free agent OF Mitchell Hansen to a minor league contract. |
| Jun 28, 2018 | Signed as free agent | Juan Graterol | — | Minnesota Twins | Minnesota Twins signed free agent C Juan Graterol to a minor league contract. |
| Jun 28, 2018 | Signed | Arbert Cipion | — | Milwaukee Brewers | Milwaukee Brewers signed OF Arbert Cipion. |
| Jun 28, 2018 | Signed as free agent | Eddie Silva | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 3B Ed Silva to a minor league contract. |
| Jun 28, 2018 | Trade | Steve Pearce | Toronto Blue Jays | Boston Red Sox | Toronto Blue Jays traded LF Steve Pearce and cash to Boston Red Sox for SS Santiago Espinal. |
| Jun 28, 2018 | Signed | Brandon Riley | — | St. Louis Cardinals | St. Louis Cardinals signed CF Brandon Riley. |
| Jun 28, 2018 | Signed | Michael Suarez | — | San Diego Padres | San Diego Padres signed 1B Michael Suarez. |
| Jun 28, 2018 | Signed | Riley McCauley | — | Chicago Cubs | Chicago Cubs signed RHP Riley McCauley. |
| Jun 28, 2018 | Signed as free agent | Cooper Casad | — | San Francisco Giants | San Francisco Giants signed free agent RHP Cooper Casad to a minor league contract. |
| Jun 28, 2018 | Signed | Steele Walker | — | Chicago White Sox | Chicago White Sox signed OF Steele Walker. |
| Jun 28, 2018 | Signed as free agent | Garrett Christman | — | San Francisco Giants | San Francisco Giants signed free agent RHP Garrett Christman to a minor league contract. |
| Jun 28, 2018 | Signed as free agent | Cooper Criswell | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Cooper Criswell to a minor league contract. |
| Jun 28, 2018 | Signed | Ty Harpenau | — | Atlanta Braves | Atlanta Braves signed RHP Ty Harpenau. |
| Jun 27, 2018 | Signed | Parker Meadows | — | Detroit Tigers | Detroit Tigers signed OF Parker Meadows. |
| Jun 27, 2018 | Signed | Yeancarlos Lleras | — | Baltimore Orioles | Baltimore Orioles signed RHP Yeancarlos Lleras. |
| Jun 27, 2018 | Signed | Carlos Cortes | — | New York Mets | New York Mets signed 2B Carlos Cortes. |
| Jun 27, 2018 | Signed | Cole Roederer | — | Chicago Cubs | Chicago Cubs signed OF Cole Roederer. |
| Jun 27, 2018 | Signed | Ethan Roberts | — | Chicago Cubs | Chicago Cubs signed RHP Ethan Roberts. |
| Jun 27, 2018 | Signed | Kohl Franklin | — | Chicago Cubs | Chicago Cubs signed RHP Kohl Franklin. |
| Jun 27, 2018 | Signed | Luke Reynolds | — | Chicago Cubs | Chicago Cubs signed 3B Luke Reynolds. |
| Jun 27, 2018 | Signed | Riley Thompson | — | Chicago Cubs | Chicago Cubs signed RHP Riley Thompson. |
| Jun 27, 2018 | Signed | Ezequiel Pagan | — | Chicago Cubs | Chicago Cubs signed OF Ezequiel Pagan. |
| Jun 27, 2018 | Signed | Dalton Hurd | — | Chicago Cubs | Chicago Cubs signed OF Dalton Hurd. |
| Jun 27, 2018 | Signed | Levi Jordan | — | Chicago Cubs | Chicago Cubs signed SS Levi Jordan. |
| Jun 27, 2018 | Signed | Miguel Pabon | — | Chicago Cubs | Chicago Cubs signed SS Miguel Pabon. |
| Jun 27, 2018 | Signed | Chris Allen | — | Chicago Cubs | Chicago Cubs signed LHP Chris Allen. |
| Jun 27, 2018 | Signed | Braydon Fisher | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Braydon Fisher. |
| Jun 27, 2018 | Signed | Denny Bentley | — | Minnesota Twins | Minnesota Twins signed LHP Denny Bentley. |
| Jun 27, 2018 | Signed | Regi Grace | — | Minnesota Twins | Minnesota Twins signed RHP Regi Grace. |
| Jun 27, 2018 | Signed as free agent | Michael Gizzi | — | Detroit Tigers | Detroit Tigers signed free agent RHP Michael Gizzi to a minor league contract. |
| Jun 27, 2018 | Signed as free agent | Allen Montgomery | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Allen Montgomery to a minor league contract. |
| Jun 27, 2018 | Signed as free agent | John O'Reilly | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP John O'Reilly to a minor league contract. |
| Jun 27, 2018 | Signed | Brendan Meyer | — | Cleveland Guardians | Cleveland Indians signed RHP Brendan Meyer. |
| Jun 27, 2018 | Signed as free agent | Brandon Phillips | — | Boston Red Sox | Boston Red Sox signed free agent 2B Brandon Phillips to a minor league contract. |
| Jun 27, 2018 | Signed | Konnor Pilkington | — | Chicago White Sox | Chicago White Sox signed LHP Konnor Pilkington. |
| Jun 27, 2018 | Signed | Waylon Richardson | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Waylon Richardson. |
| Jun 27, 2018 | Signed as free agent | Stefan Crichton | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Stefan Crichton to a minor league contract. |
| Jun 26, 2018 | Signed | J.T. Perez | — | Minnesota Twins | Minnesota Twins signed LHP J.T. Perez. |
| Jun 26, 2018 | Signed | Mitchell Robinson | — | New York Yankees | New York Yankees signed 3B Mitchell Robinson. |
| Jun 26, 2018 | Signed | Keegan Curtis | — | New York Yankees | New York Yankees signed RHP Keegan Curtis. |
| Jun 26, 2018 | Signed | Alex Guerrero | — | New York Yankees | New York Yankees signed C Alex Guerrero. |
| Jun 26, 2018 | Signed | Matt McGarry | — | New York Yankees | New York Yankees signed 2B Matt McGarry. |
| Jun 26, 2018 | Signed | Osiris Johnson | — | Miami Marlins | Miami Marlins signed SS Osiris Johnson. |
| Jun 26, 2018 | Signed | Tristan Pompey | — | Miami Marlins | Miami Marlins signed OF Tristan Pompey. |
| Jun 26, 2018 | Signed | Cameron Barstad | — | Miami Marlins | Miami Marlins signed C Cameron Barstad. |
| Jun 26, 2018 | Signed | Sam Bordner | — | Miami Marlins | Miami Marlins signed RHP Sam Bordner. |
| Jun 26, 2018 | Signed | Justin Evans | — | Miami Marlins | Miami Marlins signed RHP Justin Evans. |
| Jun 26, 2018 | Signed | Matt Mercer | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Matt Mercer. |
| Jun 26, 2018 | Signed | Ryan Miller | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Ryan Miller. |
| Jun 26, 2018 | Signed as free agent | Manual Tovar | — | Colorado Rockies | Colorado Rockies signed free agent LHP Manual Tovar to a minor league contract. |
| Jun 26, 2018 | Signed | Ryan Conroy | — | Baltimore Orioles | Baltimore Orioles signed RHP Ryan Conroy. |
| Jun 26, 2018 | Signed as free agent | Peyton Gray | — | Colorado Rockies | Colorado Rockies signed free agent RHP Peyton Gray to a minor league contract. |
| Jun 26, 2018 | Signed as free agent | Colton Pate | — | Colorado Rockies | Colorado Rockies signed free agent RHP Colton Pate to a minor league contract. |
| Jun 26, 2018 | Signed | Clay Fisher | — | Baltimore Orioles | Baltimore Orioles signed SS Clay Fisher. |
| Jun 26, 2018 | Signed | Kyle Datres | — | Colorado Rockies | Colorado Rockies signed 3B Kyle Datres. |
| Jun 26, 2018 | Signed | Carlos Vega | — | Chicago Cubs | Chicago Cubs signed RHP Carlos Vega. |
| Jun 26, 2018 | Signed | Colton Eastman | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Colton Eastman. |
| Jun 25, 2018 | Signed | Brian Metoyer | — | New York Mets | New York Mets signed RHP Brian Metoyer. |
| Jun 25, 2018 | Signed | Adam Hill | — | New York Mets | New York Mets signed RHP Adam Hill. |
| Jun 25, 2018 | Signed | Casey Mize | — | Detroit Tigers | Detroit Tigers signed RHP Casey Mize. |
| Jun 25, 2018 | Signed | Isaiah Carranza | — | Chicago White Sox | Chicago White Sox signed RHP Isaiah Carranza. |
| Jun 25, 2018 | Signed | Jackson Thoreson | — | New York Yankees | New York Yankees signed C Jack Thoreson. |
| Jun 25, 2018 | Signed as free agent | Trent Shelton | — | San Diego Padres | San Diego Padres signed free agent LHP Trent Shelton to a minor league contract. |
| Jun 25, 2018 | Signed | Cody Roberts | — | Baltimore Orioles | Baltimore Orioles signed C Cody Roberts. |
| Jun 25, 2018 | Signed | Eddy Demurias | — | Cincinnati Reds | Cincinnati Reds signed RHP Eddy Demurias. |
| Jun 25, 2018 | Signed | Jack Patterson | — | Chicago Cubs | Chicago Cubs signed LHP Jack Patterson. |
| Jun 25, 2018 | Signed as free agent | Luis Marte | — | Chicago Cubs | Chicago Cubs signed free agent RHP Luis Marte to a minor league contract. |
| Jun 25, 2018 | Signed | Kody Clemens | — | Detroit Tigers | Detroit Tigers signed 2B Kody Clemens. |
| Jun 25, 2018 | Signed | Matt Pita | — | New York Yankees | New York Yankees signed IF Matt Pita. |
| Jun 25, 2018 | Signed | Isaiah Pasteur | — | New York Yankees | New York Yankees signed OF Isaiah Pasteur. |
| Jun 25, 2018 | Signed | Ryan Dunne | — | Cincinnati Reds | Cincinnati Reds signed RHP Ryan Dunne. |
| Jun 25, 2018 | Signed | Dylan Harris | — | Cincinnati Reds | Cincinnati Reds signed 3B Dylan Harris. |
| Jun 25, 2018 | Signed | Steven Gingery | — | St. Louis Cardinals | St. Louis Cardinals signed LHP Steven Gingery. |
| Jun 25, 2018 | Signed as free agent | Tyler Warmoth | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Tyler Warmoth to a minor league contract. |
| Jun 24, 2018 | Signed | Brendan Hardy | — | New York Mets | New York Mets signed RHP Brendan Hardy. |
| Jun 24, 2018 | Released | Juan Graterol | — | Los Angeles Angels | Los Angeles Angels released C Juan Graterol. |
| Jun 24, 2018 | Released | Boone Logan | — | Milwaukee Brewers | Milwaukee Brewers released LHP Boone Logan. |
| Jun 24, 2018 | Signed as free agent | Nick Basto | — | Washington Nationals | Washington Nationals signed free agent LF Nick Basto to a minor league contract. |
| Jun 24, 2018 | Signed | Jake Irvin | — | Washington Nationals | Washington Nationals signed RHP Jake Irvin. |
| Jun 23, 2018 | Released | Stefan Crichton | — | Arizona Diamondbacks | Arizona Diamondbacks released RHP Stefan Crichton. |
| Jun 23, 2018 | Signed | Saul Gonzalez | — | New York Mets | New York Mets signed RHP Saul Gonzalez. |
| Jun 23, 2018 | Signed | Pablo Garabitos | — | Milwaukee Brewers | Milwaukee Brewers signed OF Pablo Garabitos. |
| Jun 22, 2018 | Signed | Jackson Bertsch | — | New York Yankees | New York Yankees signed RHP Jackson Bertsch. |
| Jun 22, 2018 | Signed | Cameron Kurz | — | Atlanta Braves | Atlanta Braves signed RHP Cameron Kurz. |
| Jun 22, 2018 | Signed | Yusniel Padron-Artiles | — | Boston Red Sox | Boston Red Sox signed RHP Yusniel Padron-Artilles. |
| Jun 22, 2018 | Signed | Kyle Marinconz | — | Washington Nationals | Washington Nationals signed SS Kyle Marinconz. |
| Jun 22, 2018 | Signed | Stevie Ledesma | — | Detroit Tigers | Detroit Tigers signed RHP Stevie Ledesma. |
| Jun 22, 2018 | Signed | Matt Morrow | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Matt Morrow. |
| Jun 22, 2018 | Signed as free agent | Josh Thole | — | Detroit Tigers | Detroit Tigers signed free agent C Josh Thole to a minor league contract. |
| Jun 22, 2018 | Signed | Max Burt | — | New York Yankees | New York Yankees signed 3B Max Burt. |
| Jun 22, 2018 | Signed | Mickey Gasper | — | New York Yankees | New York Yankees signed 1B Mickey Gasper. |
| Jun 22, 2018 | Signed | Brendan Venter | — | Atlanta Braves | Atlanta Braves signed 1B Brendan Venter. |
| Jun 22, 2018 | Signed | Jayson Schroeder | — | Houston Astros | Houston Astros signed RHP Jayson Schroeder. |
| Jun 22, 2018 | Signed | Alex McKenna | — | Houston Astros | Houston Astros signed OF Alex McKenna. |
| Jun 22, 2018 | Signed | Travis Moths | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Travis Moths. |
| Jun 22, 2018 | Signed | Tyler Holton | — | Arizona Diamondbacks | Arizona Diamondbacks signed LHP Tyler Holton. |
| Jun 22, 2018 | Signed | Drew Rom | — | Baltimore Orioles | Baltimore Orioles signed LHP Drew Rom. |
| Jun 22, 2018 | Signed | Braxton Ashcraft | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Braxton Ashcraft. |
| Jun 22, 2018 | Signed | Connor Kaiser | — | Pittsburgh Pirates | Pittsburgh Pirates signed SS Connor Kaiser. |
| Jun 22, 2018 | Signed | Tanner Myatt | — | New York Yankees | New York Yankees signed RHP Tanner Myatt. |
| Jun 22, 2018 | Signed | Tyler Johnson | — | New York Yankees | New York Yankees signed RHP Tyler Johnson. |
| Jun 22, 2018 | Signed as free agent | Mitch Ghelfi | — | Los Angeles Angels | Los Angeles Angels signed free agent C Mitch Ghelfi to a minor league contract. |
| Jun 22, 2018 | Signed as free agent | Connor Hollis | — | Tampa Bay Rays | Tampa Bay Rays signed free agent 2B Connor Hollis to a minor league contract. |
| Jun 22, 2018 | Signed as free agent | Kyle Lobstein | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Kyle Lobstein to a minor league contract. |
| Jun 22, 2018 | Signed as free agent | Danny Espinosa | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Danny Espinosa to a minor league contract. |
| Jun 22, 2018 | Signed as free agent | Robbie Baker | — | Boston Red Sox | Boston Red Sox signed free agent RHP Robbie Baker to a minor league contract. |
| Jun 22, 2018 | Signed as free agent | Albert Valdez | — | Detroit Tigers | Detroit Tigers signed free agent LHP Albert Valdez to a minor league contract. |
| Jun 22, 2018 | Signed | Chase Adkins | — | Los Angeles Angels | Los Angeles Angels signed RHP Chase Adkins. |
| Jun 22, 2018 | Signed | Joe Gray Jr. | — | Milwaukee Brewers | Milwaukee Brewers signed OF Joe Gray. |
| Jun 22, 2018 | Signed | Daniel Nunan | — | Los Angeles Angels | Los Angeles Angels signed LHP Daniel Nunan. |
| Jun 21, 2018 | Signed | Nick Decker | — | Boston Red Sox | Boston Red Sox signed OF Nick Decker. |
| Jun 21, 2018 | Signed | Elih Marrero | — | Boston Red Sox | Boston Red Sox signed C Elih Marrero. |
| Jun 21, 2018 | Signed | Brandon Howlett | — | Boston Red Sox | Boston Red Sox signed 3B Brandon Howlett. |
| Jun 21, 2018 | Signed | Ryan Fernandez | — | Boston Red Sox | Boston Red Sox signed RHP Ryan Fernandez. |
| Jun 21, 2018 | Signed | Caleb Ramsey | — | Boston Red Sox | Boston Red Sox signed OF Caleb Ramsey. |
| Jun 21, 2018 | Signed | Connor Berry | — | Boston Red Sox | Boston Red Sox signed RHP Connor Berry. |
| Jun 21, 2018 | Signed | Nico Hoerner | — | Chicago Cubs | Chicago Cubs signed SS Nico Hoerner. |
| Jun 21, 2018 | Signed | Jimmy Herron | — | Chicago Cubs | Chicago Cubs signed OF Jimmy Herron. |
| Jun 21, 2018 | Signed | Zach Mort | — | Chicago Cubs | Chicago Cubs signed RHP Zach Mort. |
| Jun 21, 2018 | Signed | Derek Casey | — | Chicago Cubs | Chicago Cubs signed RHP Derek Casey. |
| Jun 21, 2018 | Signed | Cam Sanders | — | Chicago Cubs | Chicago Cubs signed RHP Cam Sanders. |
| Jun 21, 2018 | Signed | Tyler Durna | — | Chicago Cubs | Chicago Cubs signed 1B Tyler Durna. |
| Jun 21, 2018 | Signed | Jake Slaughter | — | Chicago Cubs | Chicago Cubs signed SS Jake Slaughter. |
| Jun 21, 2018 | Released | Tony Cruz | — | Cincinnati Reds | Cincinnati Reds released C Tony Cruz. |
| Jun 21, 2018 | Signed | Nick Dalesandro | — | Arizona Diamondbacks | Arizona Diamondbacks signed C Nick Dalesandro. |
| Jun 21, 2018 | Signed | Kyle Gray | — | New York Yankees | New York Yankees signed 2B Kyle Gray. |
| Jun 21, 2018 | Signed | Alex Junior | — | New York Yankees | New York Yankees signed OF Alex Junior. |
| Jun 21, 2018 | Signed | Ruben Cardenas | — | Cleveland Guardians | Cleveland Indians signed OF Ruben Cardenas. |
| Jun 21, 2018 | Signed as free agent | Kevin Biondic | — | Boston Red Sox | Boston Red Sox signed free agent RHP Kevin Biondic to a minor league contract. |
| Jun 21, 2018 | Trade | Brandon Downes | Kansas City Royals | Atlanta Braves | Kansas City Royals traded CF Brandon Downes to Atlanta Braves. |
| Jun 21, 2018 | Signed as free agent | Brandon Bednar | — | Colorado Rockies | Colorado Rockies signed free agent 2B Brandon Bednar to a minor league contract. |
| Jun 21, 2018 | Signed | Will Banfield | — | Miami Marlins | Miami Marlins signed C Will Banfield. |
| Jun 21, 2018 | Signed | Willie MacIver | — | Colorado Rockies | Colorado Rockies signed C Willie MacIver. |
| Jun 21, 2018 | Signed as free agent | Reynier Montero | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Reynier Montero to a minor league contract. |
| Jun 21, 2018 | Signed as free agent | Jose A. Rodriguez | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Jose A. Rodriguez to a minor league contract. |
| Jun 21, 2018 | Signed as free agent | Brennon Kaleiwahea | — | Chicago Cubs | Chicago Cubs signed free agent C Brennon Kaleiwahea to a minor league contract. |
| Jun 21, 2018 | Signed | Nick Meservey | — | Baltimore Orioles | Baltimore Orioles signed LHP Nick Meservey. |
| Jun 21, 2018 | Signed | Jamie Galazin | — | Chicago Cubs | Chicago Cubs signed OF Jamie Galazin. |
| Jun 21, 2018 | Signed as free agent | D.J. Artis | — | Chicago Cubs | Chicago Cubs signed free agent OF D.J. Artis to a minor league contract. |
| Jun 21, 2018 | Signed | Drew Rasmussen | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Drew Rasmussen. |
| Jun 20, 2018 | Signed | John Ham | — | Baltimore Orioles | Baltimore Orioles signed SS John Ham. |
| Jun 20, 2018 | Signed | Austin Hale | — | Minnesota Twins | Minnesota Twins signed C Austin Hale. |
| Jun 20, 2018 | Signed | Jon Olsen | — | Minnesota Twins | Minnesota Twins signed RHP Jon Olsen. |
| Jun 20, 2018 | Signed | Mitch Stallings | — | Atlanta Braves | Atlanta Braves signed LHP Mitch Stallings. |
| Jun 20, 2018 | Signed as free agent | Austin Anderson | — | Detroit Tigers | Detroit Tigers signed free agent RHP Austin Anderson to a minor league contract. |
| Jun 20, 2018 | Signed as free agent | Jon Rosoff | — | Detroit Tigers | Detroit Tigers signed free agent C Jon Rosoff to a minor league contract. |
| Jun 20, 2018 | Signed | Griffin Conine | — | Toronto Blue Jays | Toronto Blue Jays signed OF Griffin Conine. |
| Jun 20, 2018 | Signed | Ethan DeCaster | — | Detroit Tigers | Detroit Tigers signed RHP Ethan DeCaster. |
| Jun 20, 2018 | Signed | Jesse Wilkening | — | Philadelphia Phillies | Philadelphia Phillies signed C Jesse Wilkening. |
| Jun 20, 2018 | Signed | Nick Meyer | — | New York Mets | New York Mets signed C Nick Meyer. |
| Jun 20, 2018 | Signed | Ryley Gilliam | — | New York Mets | New York Mets signed RHP Ryley Gilliam. |
| Jun 20, 2018 | Signed | Tommy Wilson | — | New York Mets | New York Mets signed RHP Tommy Wilson. |
| Jun 20, 2018 | Signed | Kris Bubic | — | Kansas City Royals | Kansas City Royals signed LHP Kris Bubic. |
| Jun 20, 2018 | Signed | Liam Sabino | — | St. Louis Cardinals | St. Louis Cardinals signed 3B Liam Sabino. |
| Jun 20, 2018 | Signed | Cole Kreuter | — | St. Louis Cardinals | St. Louis Cardinals signed 3B Cole Kreuter. |
| Jun 20, 2018 | Signed as free agent | Joe Freiday | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C Joe Freiday to a minor league contract. |
| Jun 20, 2018 | Signed | Zack Leban | — | Miami Marlins | Miami Marlins signed RHP Zack Leban. |
| Jun 20, 2018 | Signed | Eli Villalobos | — | Miami Marlins | Miami Marlins signed RHP Eli Villalobos. |
| Jun 20, 2018 | Signed | Zach Wolf | — | Miami Marlins | Miami Marlins signed RHP Zach Wolf. |
| Jun 20, 2018 | Signed | Luke Jarvis | — | Miami Marlins | Miami Marlins signed SS Luke Jarvis. |
| Jun 20, 2018 | Signed | Tyler Jones | — | Miami Marlins | Miami Marlins signed RHP Tyler Jones. |
| Jun 20, 2018 | Signed | Jake Norton | — | Miami Marlins | Miami Marlins signed RHP Jake Norton. |
| Jun 20, 2018 | Signed | Joe Strzelecki | — | Miami Marlins | Miami Marlins signed RHP Joe Strzelecki. |
| Jun 20, 2018 | Signed | Jackson Rose | — | Miami Marlins | Miami Marlins signed RHP Jackson Rose. |
| Jun 20, 2018 | Signed as free agent | Francis Ventura | — | Texas Rangers | Texas Rangers signed free agent RHP Francis Ventura to a minor league contract. |
| Jun 20, 2018 | Signed as free agent | Erne Valdes | — | Texas Rangers | Texas Rangers signed free agent LHP Erne Valdes to a minor league contract. |
| Jun 20, 2018 | Signed as free agent | Tyler Cohen | — | Texas Rangers | Texas Rangers signed free agent RHP Tyler Cohen to a minor league contract. |
| Jun 20, 2018 | Signed | Aaron Ackerman | — | Los Angeles Dodgers | Los Angeles Dodgers signed C Aaron Ackerman. |
| Jun 20, 2018 | Signed | Jon Littell | — | Los Angeles Dodgers | Los Angeles Dodgers signed OF Jon Littell. |
| Jun 20, 2018 | Signed | Sean Boyle | — | New York Yankees | New York Yankees signed RHP Sean Boyle. |
| Jun 20, 2018 | Signed | Tarik Skubal | — | Detroit Tigers | Detroit Tigers signed LHP Tarik Skubal. |
| Jun 20, 2018 | Signed | Maddux Conger | — | Detroit Tigers | Detroit Tigers signed RHP Maddux Conger. |
| Jun 20, 2018 | Signed | Erik Cha | — | Minnesota Twins | Minnesota Twins signed LHP Erik Cha. |
| Jun 20, 2018 | Signed as free agent | Kyle Mottice | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 2B Kyle Mottice to a minor league contract. |
| Jun 20, 2018 | Signed as free agent | Patrick Dorrian | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 2B Patrick Dorrian to a minor league contract. |
| Jun 20, 2018 | Signed as free agent | Bradey Welsh | — | Atlanta Braves | Atlanta Braves signed free agent RHP Bradey Welsh to a minor league contract. |
| Jun 20, 2018 | Signed | Gregorio Reyes | — | Boston Red Sox | Boston Red Sox signed LHP Gregorio Reyes. |
| Jun 20, 2018 | Signed | Trevor Putzig | — | Baltimore Orioles | Baltimore Orioles signed 3B Trevor Putzig. |
| Jun 19, 2018 | Signed | Logan Browning | — | Boston Red Sox | Boston Red Sox signed LHP Logan Browning. |
| Jun 19, 2018 | Signed | Kris Jackson | — | Boston Red Sox | Boston Red Sox signed RHP Kris Jackson. |
| Jun 19, 2018 | Signed | Eddie Jimenez | — | Boston Red Sox | Boston Red Sox signed RHP Eddie Jimenez. |
| Jun 19, 2018 | Signed | Lane Milligan | — | Boston Red Sox | Boston Red Sox signed C Lane Milligan. |
| Jun 19, 2018 | Signed | Bramdon Perez | — | Boston Red Sox | Boston Red Sox signed OF Bramdon Perez. |
| Jun 19, 2018 | Signed | Cole Aker | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Cole Aker. |
| Jun 19, 2018 | Signed | Marcus Evey | — | New York Yankees | New York Yankees signed RHP Marcus Evey. |
| Jun 19, 2018 | Signed | Chris Proctor | — | Detroit Tigers | Detroit Tigers signed C Christopher Proctor. |
| Jun 19, 2018 | Signed | Kevynn Arias | — | Detroit Tigers | Detroit Tigers signed C Kevynn Arias. |
| Jun 19, 2018 | Signed | Jeb Bargfeldt | — | Detroit Tigers | Detroit Tigers signed LHP Jeb Bargfeldt. |
| Jun 19, 2018 | Signed | Justin Dean | — | Atlanta Braves | Atlanta Braves signed OF Justin Dean. |
| Jun 19, 2018 | Signed | Greyson Jenista | — | Atlanta Braves | Atlanta Braves signed 1B Greyson Jenista. |
| Jun 19, 2018 | Signed | Andrew Moritz | — | Atlanta Braves | Atlanta Braves signed OF Andrew Moritz. |
| Jun 19, 2018 | Signed | Greg Cullen | — | Atlanta Braves | Atlanta Braves signed 2B Greg Cullen. |
| Jun 19, 2018 | Signed | Brett Langhorne | — | Atlanta Braves | Atlanta Braves signed 3B Brett Langhorne. |
| Jun 19, 2018 | Signed | Michael Mateja | — | Atlanta Braves | Atlanta Braves signed 3B Michael Mateja. |
| Jun 19, 2018 | Signed as free agent | Angel Ortega | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Angel Ortega to a minor league contract. |
| Jun 19, 2018 | Signed as free agent | Jhon Victorino | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Jhon Victorino to a minor league contract. |
| Jun 19, 2018 | Signed | Rusber Estrada | — | Atlanta Braves | Atlanta Braves signed C Rusber Estrada. |
| Jun 19, 2018 | Signed | Ray Soderman | — | Atlanta Braves | Atlanta Braves signed C Ray Soderman. |
| Jun 19, 2018 | Signed | Zach Daniels | — | Atlanta Braves | Atlanta Braves signed RHP Zach Daniels. |
| Jun 19, 2018 | Signed | Zach Guth | — | Atlanta Braves | Atlanta Braves signed LHP Zach Guth. |
| Jun 19, 2018 | Signed | Jake Higginbotham | — | Atlanta Braves | Atlanta Braves signed LHP Jake Higginbotham. |
| Jun 19, 2018 | Signed | Tanner Lawson | — | Atlanta Braves | Atlanta Braves signed LHP Tanner Lawson. |
| Jun 19, 2018 | Signed | Trey Riley | — | Atlanta Braves | Atlanta Braves signed RHP Trey Riley. |
| Jun 19, 2018 | Signed | Zach Seipel | — | Atlanta Braves | Atlanta Braves signed RHP Zach Seipel. |
| Jun 19, 2018 | Signed | Brooks Wilson | — | Atlanta Braves | Atlanta Braves signed RHP Brooks Wilson. |
| Jun 19, 2018 | Signed as free agent | Danny Chang | — | Seattle Mariners | Seattle Mariners signed free agent LHP Jing-Yu Chang to a minor league contract. |
| Jun 19, 2018 | Signed as free agent | Blake Townsend | — | Seattle Mariners | Seattle Mariners signed free agent LHP Blake Townsend to a minor league contract. |
| Jun 19, 2018 | Signed as free agent | Eduard Rosillo | — | Kansas City Royals | Kansas City Royals signed free agent RHP Eduard Rosillo to a minor league contract. |
| Jun 19, 2018 | Signed as free agent | Juan Carlos Negret | — | Kansas City Royals | Kansas City Royals signed free agent OF Juan Carlos Negret to a minor league contract. |
| Jun 19, 2018 | Signed | R.J. Freure | — | Houston Astros | Houston Astros signed RHP R.J. Freure. |
| Jun 19, 2018 | Signed | Scott Schreiber | — | Houston Astros | Houston Astros signed OF Scott Schreiber. |
| Jun 19, 2018 | Signed | Miguel Figueroa | — | Houston Astros | Houston Astros signed RHP Miguel Figueroa. |
| Jun 19, 2018 | Signed | Brett Conine | — | Houston Astros | Houston Astros signed RHP Brett Conine. |
| Jun 19, 2018 | Signed | Jonathan Bermúdez | — | Houston Astros | Houston Astros signed LHP Jonathan Bermudez. |
| Jun 19, 2018 | Signed | David Garza | — | Arizona Diamondbacks | Arizona Diamondbacks signed SS David Garza. |
| Jun 19, 2018 | Signed | Jack Herman | — | Pittsburgh Pirates | Pittsburgh Pirates signed OF Jack Herman. |
| Jun 19, 2018 | Signed | Cody Smith | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Cody Smith. |
| Jun 19, 2018 | Signed | Jake Mielock | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Jake Mielock. |
| Jun 19, 2018 | Signed as free agent | Robby Rowland | — | Texas Rangers | Texas Rangers signed free agent RHP Robby Rowland to a minor league contract. |
| Jun 19, 2018 | Signed | David Hollie | — | Kansas City Royals | Kansas City Royals signed OF David Hollie. |
| Jun 19, 2018 | Signed | Kevon Jackson | — | Kansas City Royals | Kansas City Royals signed OF Kevon Jackson. |
| Jun 19, 2018 | Signed | Dillon Paulson | — | Los Angeles Dodgers | Los Angeles Dodgers signed 1B Dillon Paulson. |
| Jun 19, 2018 | Signed | Luke Heyer | — | Los Angeles Dodgers | Los Angeles Dodgers signed 3B Luke Heyer. |
| Jun 19, 2018 | Signed | James Outman | — | Los Angeles Dodgers | Los Angeles Dodgers signed OF James Outman. |
| Jun 19, 2018 | Signed | Niko Hulsizer | — | Los Angeles Dodgers | Los Angeles Dodgers signed OF Niko Hulsizer. |
| Jun 19, 2018 | Signed | Matt Cogen | — | Los Angeles Dodgers | Los Angeles Dodgers signed OF Matt Cogen. |
| Jun 19, 2018 | Signed | Dan Robinson | — | Los Angeles Dodgers | Los Angeles Dodgers signed OF Daniel Robinson. |
| Jun 19, 2018 | Signed | Lenny Torres Jr. | — | Cleveland Guardians | Cleveland Indians signed RHP Lenny Torres. |
| Jun 19, 2018 | Signed | Cody Morris | — | Cleveland Guardians | Cleveland Indians signed RHP Cody Morris. |
| Jun 19, 2018 | Signed | Josh Smith | — | Texas Rangers | Texas Rangers signed LHP Josh Smith. |
| Jun 19, 2018 | Signed | Grant Lavigne | — | Colorado Rockies | Colorado Rockies signed 1B Grant Lavigne. |
| Jun 19, 2018 | Signed | Terrin Vavra | — | Colorado Rockies | Colorado Rockies signed SS Terrin Vavra. |
| Jun 19, 2018 | Signed | Andrew Quezada | — | Colorado Rockies | Colorado Rockies signed RHP Andrew Quezada. |
| Jun 19, 2018 | Trade | Deck McGuire | Texas Rangers | Los Angeles Angels | Texas Rangers traded RHP Deck McGuire to Los Angeles Angels for Player To Be Named Later. |
| Jun 19, 2018 | Signed | Wes Noble | — | Detroit Tigers | Detroit Tigers signed RHP Wes Noble. |
| Jun 19, 2018 | Signed as free agent | Ethan Evanko | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Ethan Evanko to a minor league contract. |
| Jun 19, 2018 | Signed as free agent | Blake Bennett | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Blake Bennett to a minor league contract. |
| Jun 19, 2018 | Signed | Rylan Thomas | — | Cincinnati Reds | Cincinnati Reds signed 1B Rylan Thomas. |
| Jun 19, 2018 | Signed | Beau Branton | — | Seattle Mariners | Seattle Mariners signed 2B Beau Branton. |
| Jun 18, 2018 | Signed | Tanner Howell | — | Minnesota Twins | Minnesota Twins signed RHP Tanner Howell. |
| Jun 18, 2018 | Signed | Dylan Stowell | — | Minnesota Twins | Minnesota Twins signed RHP Dylan Stowell. |
| Jun 18, 2018 | Signed | Gabe Snyder | — | Minnesota Twins | Minnesota Twins signed 1B Gabe Snyder. |
| Jun 18, 2018 | Signed | Willie Joe Garry Jr. | — | Minnesota Twins | Minnesota Twins signed OF Willie Joe Garry Jr.. |
| Jun 18, 2018 | Signed | Tyler Webb | — | Minnesota Twins | Minnesota Twins signed OF Tyler Webb. |
| Jun 18, 2018 | Signed | Mason Berne | — | Atlanta Braves | Atlanta Braves signed 1B Mason Berne. |
| Jun 18, 2018 | Signed | Trey Harris | — | Atlanta Braves | Atlanta Braves signed 2B Trey Harris. |
| Jun 18, 2018 | Signed | Ray Hernandez | — | Atlanta Braves | Atlanta Braves signed 3B Ray Hernandez. |
| Jun 18, 2018 | Signed | CJ Alexander | — | Atlanta Braves | Atlanta Braves signed 3B CJ Alexander. |
| Jun 18, 2018 | Signed | Logan Brown | — | Atlanta Braves | Atlanta Braves signed C Logan Brown. |
| Jun 18, 2018 | Signed | Alex Camacho | — | Atlanta Braves | Atlanta Braves signed RHP Alex Camacho. |
| Jun 18, 2018 | Signed | Victor Cavalieri | — | Atlanta Braves | Atlanta Braves signed LHP Victor Cavalieri. |
| Jun 18, 2018 | Signed | Gabriel Rodriguez | — | Atlanta Braves | Atlanta Braves signed LHP Gabriel Rodriguez. |
| Jun 18, 2018 | Signed | William Woods | — | Atlanta Braves | Atlanta Braves signed RHP William Woods. |
| Jun 18, 2018 | Signed | Andrew Ciolli | — | Baltimore Orioles | Baltimore Orioles signed RHP Andrew Ciolli. |
| Jun 18, 2018 | Signed | Cody Hacker | — | Baltimore Orioles | Baltimore Orioles signed LHP Cody Hacker. |
| Jun 18, 2018 | Signed | Tyler Joyner | — | Baltimore Orioles | Baltimore Orioles signed RHP Tyler Joyner. |
| Jun 18, 2018 | Signed | Dallas Litscher | — | Baltimore Orioles | Baltimore Orioles signed RHP Dallas Litscher. |
| Jun 18, 2018 | Signed | Kevin Magee | — | Baltimore Orioles | Baltimore Orioles signed LHP Kevin Magee. |
| Jun 18, 2018 | Signed | Parker McFadden | — | Baltimore Orioles | Baltimore Orioles signed RHP Parker McFadden. |
| Jun 18, 2018 | Signed | Jason Montville | — | Baltimore Orioles | Baltimore Orioles signed LHP Jason Montville. |
| Jun 18, 2018 | Signed | Jayvien Sandridge | — | Baltimore Orioles | Baltimore Orioles signed RHP Jayvien Sandridge. |
| Jun 18, 2018 | Signed | Jake Zebron | — | Baltimore Orioles | Baltimore Orioles signed RHP Jake Zebron. |
| Jun 18, 2018 | Signed | Matt Beaird | — | Baltimore Orioles | Baltimore Orioles signed C Matt Beaird. |
| Jun 18, 2018 | Signed | Jared Denning | — | Baltimore Orioles | Baltimore Orioles signed C Jared Denning. |
| Jun 18, 2018 | Signed | Ian Evans | — | Baltimore Orioles | Baltimore Orioles signed 1B Ian Evans. |
| Jun 18, 2018 | Signed | Bryant Arrieche | — | New York Yankees | New York Yankees signed OF Bryant Arrieche. |
| Jun 18, 2018 | Signed | Andrew Jayne | — | Baltimore Orioles | Baltimore Orioles signed OF Andrew Jayne. |
| Jun 18, 2018 | Signed | Trey Truitt | — | Baltimore Orioles | Baltimore Orioles signed OF Trey Truitt. |
| Jun 18, 2018 | Signed | Trey Whitley | — | Baltimore Orioles | Baltimore Orioles signed OF Trey Whitley. |
| Jun 18, 2018 | Signed | Derek Craft | — | New York Yankees | New York Yankees signed RHP Derek Craft. |
| Jun 18, 2018 | Signed | Cam Baird | — | Miami Marlins | Miami Marlins signed RHP Cam Baird. |
| Jun 18, 2018 | Signed | C.J. Carter | — | Miami Marlins | Miami Marlins signed RHP C.J. Carter. |
| Jun 18, 2018 | Signed | Nick Schnell | — | Tampa Bay Rays | Tampa Bay Rays signed OF Nick Schnell. |
| Jun 18, 2018 | Signed | Kaleo Johnson | — | Tampa Bay Rays | Tampa Bay Rays signed 3B Kaleo Johnson. |
| Jun 18, 2018 | Signed | Russ Olive | — | Tampa Bay Rays | Tampa Bay Rays signed 1B Russ Olive. |
| Jun 18, 2018 | Signed | Michael Berglund | — | Tampa Bay Rays | Tampa Bay Rays signed C Michael Berglund. |
| Jun 18, 2018 | Signed | Dawson Dimon | — | Tampa Bay Rays | Tampa Bay Rays signed C Dawson Dimon. |
| Jun 18, 2018 | Signed | Kevin Melendez | — | Tampa Bay Rays | Tampa Bay Rays signed C Kevin Melendez. |
| Jun 18, 2018 | Signed | Jack Perkins | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Jack Perkins. |
| Jun 18, 2018 | Signed | Brandon Ramey | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Brandon Ramey. |
| Jun 18, 2018 | Signed | Nick Sprengel | — | Tampa Bay Rays | Tampa Bay Rays signed LHP Nick Sprengel. |
| Jun 18, 2018 | Signed | Daiveyon Whittle | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Daiveyon Whittle. |
| Jun 18, 2018 | Signed | Chris Muller | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Chris Muller. |
| Jun 18, 2018 | Signed | Steffon Moore | — | Tampa Bay Rays | Tampa Bay Rays signed LHP Steffan Moore. |
| Jun 18, 2018 | Signed | Taj Bradley | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Taj Bradley. |
| Jun 18, 2018 | Signed | Gabriel Cotto | — | Philadelphia Phillies | Philadelphia Phillies signed LHP Gabriel Cotto. |
| Jun 18, 2018 | Signed | Taylor Lehman | — | Philadelphia Phillies | Philadelphia Phillies signed LHP Taylor Lehman. |
| Jun 18, 2018 | Signed | Tyler McKay | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Tyler McKay. |
| Jun 18, 2018 | Signed | Dominic Pipkin | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Dominic Pipkin. |
| Jun 18, 2018 | Signed | Jack Conley | — | Philadelphia Phillies | Philadelphia Phillies signed C Jack Conley. |
| Jun 18, 2018 | Signed | Clark Brinkman | — | Detroit Tigers | Detroit Tigers signed OF Clark Brinkman. |
| Jun 18, 2018 | Signed | Vinny Esposito | — | Detroit Tigers | Detroit Tigers signed OF Vinny Esposito. |
| Jun 18, 2018 | Signed | Matthew Jarecki | — | Detroit Tigers | Detroit Tigers signed OF Matthew Jarecki. |
| Jun 18, 2018 | Signed | Daniel Reyes | — | Detroit Tigers | Detroit Tigers signed OF Daniel Reyes. |
| Jun 18, 2018 | Signed | Avery Tuck | — | Detroit Tigers | Detroit Tigers signed OF Avery Tuck. |
| Jun 18, 2018 | Signed | Kelvin Smith | — | Detroit Tigers | Detroit Tigers signed 3B Kelvin Smith. |
| Jun 18, 2018 | Signed | Justin Childers | — | Detroit Tigers | Detroit Tigers signed 1B Justin Childers. |
| Jun 18, 2018 | Signed | Chavez Fernander | — | Detroit Tigers | Detroit Tigers signed RHP Chavez Fernander. |
| Jun 18, 2018 | Signed | Jared Tobey | — | Detroit Tigers | Detroit Tigers signed LHP Jared Tobey. |
| Jun 18, 2018 | Signed | Jayce Vancena | — | Detroit Tigers | Detroit Tigers signed RHP Jayce Vancena. |
| Jun 18, 2018 | Signed | Robbie Welhaf | — | Detroit Tigers | Detroit Tigers signed RHP Robbie Welhaf. |
| Jun 18, 2018 | Signed | Yaya Chentouf | — | Detroit Tigers | Detroit Tigers signed RHP Yasin Chentouf. |
| Jun 18, 2018 | Signed | Garrett Hill | — | Detroit Tigers | Detroit Tigers signed RHP Garrett Hill. |
| Jun 18, 2018 | Signed | Chance Kirby | — | Detroit Tigers | Detroit Tigers signed RHP Chance Kirby. |
| Jun 18, 2018 | Signed | Angel Reyes | — | Detroit Tigers | Detroit Tigers signed RHP Angel Reyes. |
| Jun 18, 2018 | Signed | Hugh Smith | — | Detroit Tigers | Detroit Tigers signed RHP Hugh Smith. |
| Jun 18, 2018 | Signed | Adam Wolf | — | Detroit Tigers | Detroit Tigers signed LHP Adam Wolf. |
| Jun 18, 2018 | Signed | Eric De La Rosa | — | Detroit Tigers | Detroit Tigers signed OF Eric De La Rosa. |
| Jun 18, 2018 | Signed | Brock Deatherage | — | Detroit Tigers | Detroit Tigers signed OF Brock Deatherage. |
| Jun 18, 2018 | Signed | Dayton Dugas | — | Detroit Tigers | Detroit Tigers signed OF Dayton Dugas. |
| Jun 18, 2018 | Signed | Reece Hampton | — | Detroit Tigers | Detroit Tigers signed OF Reece Hampton. |
| Jun 18, 2018 | Signed | Kingston Liniak | — | Detroit Tigers | Detroit Tigers signed OF Kingston Liniak. |
| Jun 18, 2018 | Signed | Nick Ames | — | Detroit Tigers | Detroit Tigers signed 1B Nick Ames. |
| Jun 18, 2018 | Signed | Jeremiah Burks | — | Detroit Tigers | Detroit Tigers signed SS Jeremiah Burks. |
| Jun 18, 2018 | Signed | Zach Malis | — | Detroit Tigers | Detroit Tigers signed 3B Zach Malis. |
| Jun 18, 2018 | Signed | Luke Sherley | — | Detroit Tigers | Detroit Tigers signed SS Luke Sherley. |
| Jun 18, 2018 | Signed | John Valente | — | Detroit Tigers | Detroit Tigers signed 3B John Valente. |
| Jun 18, 2018 | Signed | Jordan Verdon | — | Detroit Tigers | Detroit Tigers signed 3B Jordan Verdon. |
| Jun 18, 2018 | Signed | Reiss Knehr | — | San Diego Padres | San Diego Padres signed RHP Reiss Knehr. |
| Jun 18, 2018 | Signed | Cody Tyler | — | San Diego Padres | San Diego Padres signed LHP Cody Tyler. |
| Jun 18, 2018 | Signed | Alexuan Vega | — | San Diego Padres | San Diego Padres signed LHP Alexuan Vega. |
| Jun 18, 2018 | Signed | Felix Minjarez | — | San Diego Padres | San Diego Padres signed RHP Felix Minjarez. |
| Jun 18, 2018 | Signed | Jawuan Harris | — | San Diego Padres | San Diego Padres signed OF Jawuan Harris. |
| Jun 18, 2018 | Signed | Jarryd Dale | — | San Diego Padres | San Diego Padres signed SS Jarryd Dale. |
| Jun 18, 2018 | Signed | Xavier Edwards | — | San Diego Padres | San Diego Padres signed SS Xavier Edwards. |
| Jun 18, 2018 | Signed | Jonathan Heasley | — | Kansas City Royals | Kansas City Royals signed RHP Jon Heasley. |
| Jun 18, 2018 | Signed | Lee Solomon | — | San Diego Padres | San Diego Padres signed 2B Lee Solomon. |
| Jun 18, 2018 | Signed | Rainie Aguilar | — | San Diego Padres | San Diego Padres signed C Rainier Aguilar. |
| Jun 18, 2018 | Signed | Nick Gatewood | — | San Diego Padres | San Diego Padres signed C Nick Gatewood. |
| Jun 18, 2018 | Signed | Payton Smith | — | San Diego Padres | San Diego Padres signed OF Payton Smith. |
| Jun 18, 2018 | Signed | Mason Fox | — | San Diego Padres | San Diego Padres signed RHP Mason Fox. |
| Jun 18, 2018 | Signed | Tyler Mortensen | — | San Diego Padres | San Diego Padres signed LHP Tyler Mortensen. |
| Jun 18, 2018 | Signed | Hazahel Quijada | — | San Diego Padres | San Diego Padres signed LHP Hazahel Quijada. |
| Jun 18, 2018 | Signed | Sean Thompson | — | Chicago White Sox | Chicago White Sox signed RHP Sean Thompson. |
| Jun 18, 2018 | Signed as free agent | Chase Chambers | — | New York Mets | New York Mets signed free agent 1B Chase Chambers to a minor league contract. |
| Jun 18, 2018 | Signed | Drew Avans | — | Los Angeles Dodgers | Los Angeles Dodgers signed OF Drew Avans. |
| Jun 18, 2018 | Signed | Josh McLain | — | Los Angeles Dodgers | Los Angeles Dodgers signed OF Josh McLain. |
| Jun 18, 2018 | Signed | Jeremiah Vison | — | Los Angeles Dodgers | Los Angeles Dodgers signed OF Jeremiah Vison. |
| Jun 18, 2018 | Signed as free agent | Marc Rzepczynski | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Marc Rzepczynski to a minor league contract. |
| Jun 18, 2018 | Signed | Chase Calabuig | — | Athletics | Oakland Athletics signed OF Chase Calabuig. |
| Jun 18, 2018 | Signed | L.A. Woodard | — | New York Mets | New York Mets signed SS L.A. Woodard. |
| Jun 18, 2018 | Signed | Phil Capra | — | New York Mets | New York Mets signed C Phil Capra. |
| Jun 18, 2018 | Signed | Erik Sabrowski | — | San Diego Padres | San Diego Padres signed LHP Erik Sabrowski. |
| Jun 18, 2018 | Signed | Seth Mayberry | — | San Diego Padres | San Diego Padres signed RHP Seth Mayberry. |
| Jun 18, 2018 | Signed | Dean Nevarez | — | Seattle Mariners | Seattle Mariners signed C Dean Nevarez. |
| Jun 18, 2018 | Signed | Ryan Ramiz | — | Seattle Mariners | Seattle Mariners signed OF Ryan Ramiz. |
| Jun 18, 2018 | Signed | William Rivera | — | Los Angeles Angels | Los Angeles Angels signed OF William Rivera. |
| Jun 18, 2018 | Signed | Nic Laio | — | Texas Rangers | Texas Rangers signed RHP Nic Laio. |
| Jun 18, 2018 | Signed | Leury Tejada | — | Texas Rangers | Texas Rangers signed RHP Leury Tejada. |
| Jun 18, 2018 | Signed | Ryan Anderson | — | Texas Rangers | Texas Rangers signed OF Ryan Anderson. |
| Jun 18, 2018 | Signed | Grant Townsend | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Grant Townsend. |
| Jun 18, 2018 | Signed | Matt Harris | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Matt Harris. |
| Jun 18, 2018 | Signed | Fitz Stadler | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Fitz Stadler. |
| Jun 18, 2018 | Signed | Austin Havekost | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Austin Havekost. |
| Jun 18, 2018 | Signed as free agent | Jacob Sylvester | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Jake Sylvester to a minor league contract. |
| Jun 18, 2018 | Signed as free agent | Hector Villalobos | — | St. Louis Cardinals | St. Louis Cardinals signed free agent LHP Hector Villalobos to a minor league contract. |
| Jun 18, 2018 | Signed as free agent | Logan Porter | — | Kansas City Royals | Kansas City Royals signed free agent C Logan Porter to a minor league contract. |
| Jun 18, 2018 | Signed as free agent | Stephan Vidal | — | Kansas City Royals | Kansas City Royals signed free agent C Stephan Vidal to a minor league contract. |
| Jun 18, 2018 | Trade | Blake Perkins | Washington Nationals | Kansas City Royals | Kansas City Royals traded RHP Kelvin Herrera to Washington Nationals for 3B Kelvin Gutierrez, CF Blake Perkins and RHP Yohanse Morel. |
| Jun 18, 2018 | Signed as free agent | Braden Pearson | — | Texas Rangers | Texas Rangers signed free agent LHP Braden Pearson to a minor league contract. |
| Jun 18, 2018 | Signed as free agent | JJ Santa Cruz | — | San Francisco Giants | San Francisco Giants signed free agent LHP JJ Santa Cruz to a minor league contract. |
| Jun 18, 2018 | Signed as free agent | Jerry D'Andrea | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Jerry D'Andrea to a minor league contract. |
| Jun 18, 2018 | Signed | Cory Heitler | — | Cincinnati Reds | Cincinnati Reds signed RHP Cory Heitler. |
| Jun 18, 2018 | Signed as free agent | Justin Row | — | Tampa Bay Rays | Tampa Bay Rays signed free agent 2B Justin Row to a minor league contract. |
| Jun 18, 2018 | Signed as free agent | Carlos Perdomo | — | Detroit Tigers | Detroit Tigers signed free agent LHP Carlos Perdomo to a minor league contract. |
| Jun 18, 2018 | Signed | Josh Winder | — | Minnesota Twins | Minnesota Twins signed RHP Josh Winder. |
| Jun 18, 2018 | Signed | Luis Lopez | — | Cincinnati Reds | Cincinnati Reds signed SS Luis Lopez. |
| Jun 18, 2018 | Signed as free agent | Brian Auerbach | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Brian Auerbach to a minor league contract. |
| Jun 18, 2018 | Signed | Bryan Warzek | — | Los Angeles Dodgers | Los Angeles Dodgers signed LHP Bryan Warzek. |
| Jun 18, 2018 | Signed | Nelson Mompierre | — | New York Mets | New York Mets signed C Nelson Mompierre. |
| Jun 18, 2018 | Signed | Hayden Senger | — | New York Mets | New York Mets signed C Hayden Senger. |
| Jun 17, 2018 | Signed as free agent | Luke Jackson | — | Atlanta Braves | Atlanta Braves signed free agent RHP Luke Jackson. |
| Jun 17, 2018 | Signed as free agent | Bryan Evans | — | Seattle Mariners | Seattle Mariners signed free agent RHP Bryan Evans to a minor league contract. |
| Jun 17, 2018 | Signed | Brennen Davis | — | Chicago Cubs | Chicago Cubs signed OF Brennen Davis. |
| Jun 17, 2018 | Signed | Paul Richan | — | Chicago Cubs | Chicago Cubs signed RHP Paul Richan. |
| Jun 17, 2018 | Signed as free agent | Justin Topa | — | Texas Rangers | Texas Rangers signed free agent RHP Justin Topa to a minor league contract. |
| Jun 17, 2018 | Signed | Joey Bart | — | San Francisco Giants | San Francisco Giants signed C Joey Bart. |
| Jun 17, 2018 | Signed | Sean Hjelle | — | San Francisco Giants | San Francisco Giants signed RHP Sean Hjelle. |
| Jun 17, 2018 | Signed | Jake Wong | — | San Francisco Giants | San Francisco Giants signed RHP Jake Wong. |
| Jun 17, 2018 | Signed | Blake Rivera | — | San Francisco Giants | San Francisco Giants signed RHP Blake Rivera. |
| Jun 17, 2018 | Signed | Keaton Winn | — | San Francisco Giants | San Francisco Giants signed RHP Keaton Winn. |
| Jun 17, 2018 | Signed | P.J. Hilson | — | San Francisco Giants | San Francisco Giants signed OF Patrick Hilson. |
| Jun 17, 2018 | Signed | Edison Mora | — | San Francisco Giants | San Francisco Giants signed SS Edison Mora. |
| Jun 17, 2018 | Signed | Solomon Bates | — | San Francisco Giants | San Francisco Giants signed RHP Solomon Bates. |
| Jun 17, 2018 | Signed | Ben Madison | — | San Francisco Giants | San Francisco Giants signed RHP Ben Madison. |
| Jun 17, 2018 | Signed | Alex DuBord | — | San Francisco Giants | San Francisco Giants signed RHP Alex DuBord. |
| Jun 17, 2018 | Signed | David Villar | — | San Francisco Giants | San Francisco Giants signed 3B David Villar. |
| Jun 17, 2018 | Signed | Sean Roby | — | San Francisco Giants | San Francisco Giants signed 3B Sean Roby. |
| Jun 17, 2018 | Signed | George Bell | — | San Francisco Giants | San Francisco Giants signed OF George Bell. |
| Jun 17, 2018 | Signed | Bryce Tucker | — | San Francisco Giants | San Francisco Giants signed LHP Bryce Tucker. |
| Jun 17, 2018 | Signed | Matt Frisbee | — | San Francisco Giants | San Francisco Giants signed RHP Matt Frisbee. |
| Jun 17, 2018 | Signed | Trenton Toplikar | — | San Francisco Giants | San Francisco Giants signed RHP Trenton Toplikar. |
| Jun 17, 2018 | Signed | Randy Norris | — | San Francisco Giants | San Francisco Giants signed OF Randy Norris. |
| Jun 17, 2018 | Signed | Jett Manning | — | San Francisco Giants | San Francisco Giants signed SS Jett Manning. |
| Jun 17, 2018 | Signed | Angel Guzman | — | San Francisco Giants | San Francisco Giants signed C Angel Guzman. |
| Jun 17, 2018 | Signed | Clay Helvey | — | San Francisco Giants | San Francisco Giants signed RHP Clay Helvey. |
| Jun 17, 2018 | Signed | Ben Strahm | — | San Francisco Giants | San Francisco Giants signed RHP Ben Strahm. |
| Jun 17, 2018 | Signed | Preston White | — | San Francisco Giants | San Francisco Giants signed RHP Preston White. |
| Jun 17, 2018 | Signed | Fabian Pena | — | San Francisco Giants | San Francisco Giants signed C Fabian Pena. |
| Jun 17, 2018 | Signed | Travis Perry | — | San Francisco Giants | San Francisco Giants signed RHP Travis Perry. |
| Jun 17, 2018 | Signed | Marcos Campos | — | San Francisco Giants | San Francisco Giants signed SS Marcos Campos. |
| Jun 17, 2018 | Signed | Kwan Adkins | — | San Francisco Giants | San Francisco Giants signed OF Kwan Adkins. |
| Jun 17, 2018 | Signed | Ryan Walker | — | San Francisco Giants | San Francisco Giants signed RHP Ryan Walker. |
| Jun 17, 2018 | Signed | Braden Frankfort | — | San Francisco Giants | San Francisco Giants signed C Braden Frankfort. |
| Jun 17, 2018 | Signed | Austin Edgette | — | San Francisco Giants | San Francisco Giants signed OF Austin Edgette. |
| Jun 17, 2018 | Signed | Chris Roberts | — | San Francisco Giants | San Francisco Giants signed RHP Chris Roberts. |
| Jun 17, 2018 | Signed | Trevor Horn | — | San Francisco Giants | San Francisco Giants signed RHP Trevor Horn. |
| Jun 17, 2018 | Signed | Abdiel Layer | — | San Francisco Giants | San Francisco Giants signed 3B Abdiel Layer. |
| Jun 17, 2018 | Signed | Colin Schmid | — | St. Louis Cardinals | St. Louis Cardinals signed LHP Colin Schmid. |
| Jun 17, 2018 | Signed | Parker Kelly | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Parker Kelly. |
| Jun 17, 2018 | Signed | Michael Perri | — | St. Louis Cardinals | St. Louis Cardinals signed SS Michael Perri. |
| Jun 17, 2018 | Signed | Benito Santiago | — | St. Louis Cardinals | St. Louis Cardinals signed C Benito Santiago. |
| Jun 17, 2018 | Signed | Micah Bello | — | Milwaukee Brewers | Milwaukee Brewers signed OF Micah Bello. |
| Jun 17, 2018 | Signed | Caleb Marquez | — | Milwaukee Brewers | Milwaukee Brewers signed C Caleb Marquez. |
| Jun 17, 2018 | Signed | Kekai Rios | — | Milwaukee Brewers | Milwaukee Brewers signed C Kekai Rios. |
| Jun 17, 2018 | Signed | Luis Gonzalez | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Luis Gonzalez. |
| Jun 17, 2018 | Signed | Justin Jarvis | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Justin Jarvis. |
| Jun 17, 2018 | Signed | Michael Mediavilla | — | Milwaukee Brewers | Milwaukee Brewers signed LHP Michael Mediavilla. |
| Jun 17, 2018 | Signed | Peter Strzelecki | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Peter Strzelecki. |
| Jun 17, 2018 | Signed as free agent | Jameson McGrane | — | Miami Marlins | Miami Marlins signed free agent RHP Jameson McGrane to a minor league contract. |
| Jun 17, 2018 | Signed | Ty Greene | — | Chicago White Sox | Chicago White Sox signed C Ty Greene. |
| Jun 17, 2018 | Signed | Micah Coffey | — | Chicago White Sox | Chicago White Sox signed SS Micah Coffey. |
| Jun 17, 2018 | Signed | Devin Mann | — | Los Angeles Dodgers | Los Angeles Dodgers signed 2B Devin Mann. |
| Jun 17, 2018 | Signed as free agent | Brandon Benavente | — | Cleveland Guardians | Cleveland Indians signed free agent C Brandon Benavente to a minor league contract. |
| Jun 17, 2018 | Signed | Sam McWilliams | — | Los Angeles Dodgers | Los Angeles Dodgers signed OF Sam McWilliams. |
| Jun 16, 2018 | Trade | Wendell Rijo | Milwaukee Brewers | New York Yankees | Milwaukee Brewers traded IF Wendell Rijo to New York Yankees. |
| Jun 16, 2018 | Signed | Brian Eichhorn | — | Cleveland Guardians | Cleveland Indians signed RHP Brian Eichhorn. |
| Jun 16, 2018 | Signed | Jack DeGroat | — | Cleveland Guardians | Cleveland Indians signed RHP Jack DeGroat. |
| Jun 16, 2018 | Signed | Kyle Marman | — | Cleveland Guardians | Cleveland Indians signed RHP Kyle Marman. |
| Jun 16, 2018 | Signed | Connor Smith | — | Cleveland Guardians | Cleveland Indians signed SS Connor Smith. |
| Jun 16, 2018 | Signed | Logan Gilbert | — | Seattle Mariners | Seattle Mariners signed RHP Logan Gilbert. |
| Jun 16, 2018 | Signed | Ben Onyshko | — | Seattle Mariners | Seattle Mariners signed LHP Benjamin Onyshko. |
| Jun 16, 2018 | Signed | Devin Conn | — | Houston Astros | Houston Astros signed RHP Devin Conn. |
| Jun 16, 2018 | Signed | Riley Cabral | — | Houston Astros | Houston Astros signed RHP Riley Cabral. |
| Jun 16, 2018 | Signed as free agent | Drew Hutchison | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Drew Hutchison to a minor league contract. |
| Jun 16, 2018 | Signed | Clayton Andrews | — | Milwaukee Brewers | Milwaukee Brewers signed LHP Clayton Andrews. |
| Jun 16, 2018 | Signed as free agent | Colby Schultz | — | Kansas City Royals | Kansas City Royals signed free agent SS Colby Schultz to a minor league contract. |
| Jun 16, 2018 | Signed as free agent | Kiki Menendez | — | Los Angeles Angels | Los Angeles Angels signed free agent RF Kiki Menendez to a minor league contract. |
| Jun 16, 2018 | Signed | Gonzalez | — | Houston Astros | Houston Astros signed RHP Joey Gonzalez. |
| Jun 16, 2018 | Signed | Andrew Mitchell | — | New York Mets | New York Mets signed LHP Andrew Mitchell. |
| Jun 16, 2018 | Signed | Joey Gonzalez | — | Houston Astros | Houston Astros signed RHP Joey Gonzalez. |
| Jun 16, 2018 | Signed | Ryan Fitzpatrick | — | Chicago White Sox | Chicago White Sox signed 1B Ryan Fitzpatrick. |
| Jun 16, 2018 | Signed | Aaron Hernandez | — | Los Angeles Angels | Los Angeles Angels signed RHP Aaron Hernandez. |
| Jun 15, 2018 | Signed | Miguel Ausua | — | Colorado Rockies | Colorado Rockies signed LHP Miguel Ausua. |
| Jun 15, 2018 | Signed | Robert Neustrom | — | Baltimore Orioles | Baltimore Orioles signed OF Robert Neustrom. |
| Jun 15, 2018 | Signed | Michael Baird | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Michael Baird. |
| Jun 15, 2018 | Signed | Doran Turchin | — | Baltimore Orioles | Baltimore Orioles signed OF Doran Turchin. |
| Jun 15, 2018 | Signed | Eli Kraus | — | St. Louis Cardinals | St. Louis Cardinals signed LHP Eli Kraus. |
| Jun 15, 2018 | Signed | Tylor Megill | — | New York Mets | New York Mets signed RHP Tylor Megill. |
| Jun 15, 2018 | Signed | Bryce Montes de Oca | — | New York Mets | New York Mets signed RHP Bryce Montes de Oca. |
| Jun 15, 2018 | Signed | Kevin Smith | — | New York Mets | New York Mets signed LHP Kevin Smith. |
| Jun 15, 2018 | Signed | David Miranda | — | New York Mets | New York Mets signed OF David Miranda. |
| Jun 15, 2018 | Signed | Ross Adolph | — | New York Mets | New York Mets signed OF Ross Adolph. |
| Jun 15, 2018 | Signed | Brian Sharp | — | New York Mets | New York Mets signed 3B Brian Sharp. |
| Jun 15, 2018 | Signed | Manny Rodriguez | — | New York Mets | New York Mets signed SS Manny Rodriguez. |
| Jun 15, 2018 | Signed | Chandler Avant | — | New York Mets | New York Mets signed 2B Chandler Avant. |
| Jun 15, 2018 | Signed | Kyler Murray | — | Athletics | Oakland Athletics signed OF Kyler Murray. |
| Jun 15, 2018 | Signed | Jeremy Eierman | — | Athletics | Oakland Athletics signed SS Jeremy Eierman. |
| Jun 15, 2018 | Signed | Gus Varland | — | Athletics | Oakland Athletics signed RHP Gus Varland. |
| Jun 15, 2018 | Signed | Calvin Coker | — | Athletics | Oakland Athletics signed RHP Calvin Coker. |
| Jun 15, 2018 | Signed | Devin Foyle | — | Athletics | Oakland Athletics signed OF Devin Foyle. |
| Jun 15, 2018 | Signed | Jonah Bride | — | Athletics | Oakland Athletics signed 3B Jonah Bride. |
| Jun 15, 2018 | Signed | Alonzo Jones | — | Athletics | Oakland Athletics signed OF Al Jones. |
| Jun 15, 2018 | Signed | Jarred Kelenic | — | New York Mets | New York Mets signed OF Jarred Kelenic. |
| Jun 15, 2018 | Signed | Aaron Ashby | — | Milwaukee Brewers | Milwaukee Brewers signed LHP Aaron Ashby. |
| Jun 15, 2018 | Signed | Tanner Dodson | — | Tampa Bay Rays | Tampa Bay Rays signed OF Tanner Dodson. |
| Jun 15, 2018 | Signed | Tyler Frank | — | Tampa Bay Rays | Tampa Bay Rays signed SS Tyler Frank. |
| Jun 15, 2018 | Signed | Ford Proctor | — | Tampa Bay Rays | Tampa Bay Rays signed 1B Ford Proctor. |
| Jun 15, 2018 | Signed | Jacson McGowan | — | Tampa Bay Rays | Tampa Bay Rays signed 1B Jacson McGowan. |
| Jun 15, 2018 | Signed | Marvin Malone | — | Tampa Bay Rays | Tampa Bay Rays signed OF Marvin Malone. |
| Jun 15, 2018 | Signed | Trey Cumbie | — | Tampa Bay Rays | Tampa Bay Rays signed LHP Trey Cumbie. |
| Jun 15, 2018 | Signed | Alan Strong | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Alan Strong. |
| Jun 15, 2018 | Signed | Simon Rosenblum-Larson | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Simon Rosenblum-Larson. |
| Jun 15, 2018 | Signed | B.J. Myers | — | Tampa Bay Rays | Tampa Bay Rays signed RHP B.J. Myers. |
| Jun 15, 2018 | Signed | Nick Lee | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Nick Lee. |
| Jun 15, 2018 | Signed | Jack Labosky | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Jack Labosky. |
| Jun 15, 2018 | Signed | Miller Hogan | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Miller Hogan. |
| Jun 15, 2018 | Signed | Travis Swaggerty | — | Pittsburgh Pirates | Pittsburgh Pirates signed OF Travis Swaggerty. |
| Jun 15, 2018 | Signed as free agent | Josh Allen | — | New York Mets | New York Mets signed free agent 2B Josh Allen to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Joey Terdoslavich | — | New York Mets | New York Mets signed free agent 1B Joey Terdoslavich to a minor league contract. |
| Jun 15, 2018 | Signed | Thaddeus Ward | — | Boston Red Sox | Boston Red Sox signed RHP Thad Ward. |
| Jun 15, 2018 | Signed | Dylan Hardy | — | Boston Red Sox | Boston Red Sox signed OF Dylan Hardy. |
| Jun 15, 2018 | Signed as free agent | Tommy Layne | — | St. Louis Cardinals | St. Louis Cardinals signed free agent LHP Tommy Layne to a minor league contract. |
| Jun 15, 2018 | Signed | Nicholas Northcut | — | Boston Red Sox | Boston Red Sox signed 3B Nicholas Northcut. |
| Jun 15, 2018 | Trade | Chad Whitmer | New York Yankees | Milwaukee Brewers | New York Yankees traded RHP Chad Whitmer to Milwaukee Brewers for Future Considerations. |
| Jun 15, 2018 | Signed as free agent | Zac Grotz | — | New York Mets | New York Mets signed free agent RHP Zac Grotz to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Chris Jensen | — | Texas Rangers | Texas Rangers signed free agent RHP Chris Jensen to a minor league contract. |
| Jun 15, 2018 | Signed | Jeremiah Jackson | — | Los Angeles Angels | Los Angeles Angels signed SS Jeremiah Jackson. |
| Jun 15, 2018 | Signed | Kyle Bradish | — | Los Angeles Angels | Los Angeles Angels signed RHP Kyle Bradish. |
| Jun 15, 2018 | Signed | William Holmes | — | Los Angeles Angels | Los Angeles Angels signed RHP William English. |
| Jun 15, 2018 | Signed | Drevian Nelson | — | Los Angeles Angels | Los Angeles Angels signed OF Drevian Nelson. |
| Jun 15, 2018 | Signed | Nick Frank | — | Los Angeles Angels | Los Angeles Angels signed RHP Nick Frank. |
| Jun 15, 2018 | Signed | Chase Chaney | — | Los Angeles Angels | Los Angeles Angels signed RHP Chase Chaney. |
| Jun 15, 2018 | Signed | Luis Alvarado | — | Los Angeles Angels | Los Angeles Angels signed RHP Luis Alvarado. |
| Jun 15, 2018 | Signed | Dylan King | — | Los Angeles Angels | Los Angeles Angels signed RHP Dylan King. |
| Jun 15, 2018 | Signed | Datren Bray | — | Los Angeles Angels | Los Angeles Angels signed OF Datren Bray. |
| Jun 15, 2018 | Signed | Cristian Reyes | — | Los Angeles Angels | Los Angeles Angels signed RHP Cristian Reyes. |
| Jun 15, 2018 | Signed | Dazon Cole | — | Los Angeles Angels | Los Angeles Angels signed RHP Dazon Cole. |
| Jun 15, 2018 | Signed | Darrien Williams | — | Los Angeles Angels | Los Angeles Angels signed RHP Darrien Williams. |
| Jun 15, 2018 | Signed | Jacob Voss | — | Los Angeles Angels | Los Angeles Angels signed RHP Jacob Voss. |
| Jun 15, 2018 | Signed | Connor Higgins | — | Los Angeles Angels | Los Angeles Angels signed LHP Connor Higgins. |
| Jun 15, 2018 | Signed | David Clawson | — | Los Angeles Angels | Los Angeles Angels signed C D.C. Clawson. |
| Jun 15, 2018 | Signed | Cayden Hatcher | — | Colorado Rockies | Colorado Rockies signed RHP Cayden Hatcher. |
| Jun 15, 2018 | Signed as free agent | Jared Skolnicki | — | Colorado Rockies | Colorado Rockies signed free agent LHP Jared Skolnick to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Christian Aragon | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Christian Aragon to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Jared Crescentini | — | Miami Marlins | Miami Marlins signed free agent RHP Jared Crescentini to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Cody Eckerson | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Cody Eckerson to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Matt Leon | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Matthew Leon to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Tanner Chock | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Tanner Chock to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Brett Bond | — | Los Angeles Angels | Los Angeles Angels signed free agent C Brett Bond to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Justin Jones | — | Los Angeles Angels | Los Angeles Angels signed free agent SS Justin Jones to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Josh Rich | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Josh Rich to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Jose Alcantara | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jose Alcantara to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Engerbes Escalona | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Engerbes Escalona to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Antonio Gonzalez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Antonio Gonzalez to a minor league contract. |
| Jun 15, 2018 | Signed | Simeon Woods Richardson | — | New York Mets | New York Mets signed RHP Simeon Woods-Richardson. |
| Jun 15, 2018 | Signed as free agent | Robert Ortiz | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Robert Ortiz to a minor league contract. |
| Jun 15, 2018 | Signed | Grant Fennell | — | Chicago Cubs | Chicago Cubs signed 3B Grant Fennell. |
| Jun 15, 2018 | Signed as free agent | Reyson Santos | — | New York Mets | New York Mets signed free agent RHP Reyson Santos to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Lesther De Jesus | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Lesther De Jesus to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Alan Mejia | — | New York Yankees | New York Yankees signed free agent CF Alan Mejia to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Orlando Barrios | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Orlando Barrios to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Omar Martinez | — | New York Yankees | New York Yankees signed free agent C Omar Martinez to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Destin Dotson | — | Texas Rangers | Texas Rangers signed free agent LHP Destin Dotson to a minor league contract. |
| Jun 15, 2018 | Signed as free agent | Carlos Dominguez | — | New York Mets | New York Mets signed free agent OF Carlos Dominguez to a minor league contract. |
| Jun 14, 2018 | Signed | Keegan McGovern | — | Seattle Mariners | Seattle Mariners signed OF Keegan McGovern. |
| Jun 14, 2018 | Signed | Grant Anderson | — | Seattle Mariners | Seattle Mariners signed RHP Grant Anderson. |
| Jun 14, 2018 | Signed | Brian Brown | — | Boston Red Sox | Boston Red Sox signed LHP Brian Brown. |
| Jun 14, 2018 | Signed | Durbin Feltman | — | Boston Red Sox | Boston Red Sox signed RHP Durbin Feltman. |
| Jun 14, 2018 | Signed | Andrew Politi | — | Boston Red Sox | Boston Red Sox signed RHP Andrew Politi. |
| Jun 14, 2018 | Signed | Jarren Duran | — | Boston Red Sox | Boston Red Sox signed 2B Jarren Duran. |
| Jun 14, 2018 | Signed | Jonathan Ortega | — | Boston Red Sox | Boston Red Sox signed 2B Jonathan Ortega. |
| Jun 14, 2018 | Signed | Grant Williams | — | Boston Red Sox | Boston Red Sox signed 2B Grant Williams. |
| Jun 14, 2018 | Signed | Devlin Granberg | — | Boston Red Sox | Boston Red Sox signed OF Devlin Granberg. |
| Jun 14, 2018 | Signed | Triston Casas | — | Boston Red Sox | Boston Red Sox signed 3B Triston Casas. |
| Jun 14, 2018 | Signed | Sean Chandler | — | Texas Rangers | Texas Rangers signed RHP Sean Chandler. |
| Jun 14, 2018 | Signed | Tim Brennan | — | Texas Rangers | Texas Rangers signed RHP Tim Brennan. |
| Jun 14, 2018 | Signed | Chandler Sanburn | — | Texas Rangers | Texas Rangers signed RHP Chandler Sanburn. |
| Jun 14, 2018 | Signed | Billy Layne Jr. | — | Texas Rangers | Texas Rangers signed RHP Billy Layne Jr.. |
| Jun 14, 2018 | Signed | Kenen Irizarry | — | Texas Rangers | Texas Rangers signed SS Kenen Irizarry. |
| Jun 14, 2018 | Signed | Scott Kapers | — | Texas Rangers | Texas Rangers signed C Scott Kapers. |
| Jun 14, 2018 | Signed | Frainyer Chavez | — | Texas Rangers | Texas Rangers signed SS Frainyer Chavez. |
| Jun 14, 2018 | Signed | Troy Dixon | — | Texas Rangers | Texas Rangers signed OF Troy Dixon. |
| Jun 14, 2018 | Signed | David Lebron | — | Texas Rangers | Texas Rangers signed RHP David Lebron. |
| Jun 14, 2018 | Signed | Glen Richardson | — | Texas Rangers | Texas Rangers signed RHP Glen Richardson. |
| Jun 14, 2018 | Signed | Reynaldo Pichardo | — | Texas Rangers | Texas Rangers signed C Reynaldo Pichardo. |
| Jun 14, 2018 | Signed | Noah Burkholder | — | Texas Rangers | Texas Rangers signed RHP Noah Burkholder. |
| Jun 14, 2018 | Signed | Tyler Depreta-Johnson | — | Texas Rangers | Texas Rangers signed SS Tyler Depreta-Johnson. |
| Jun 14, 2018 | Signed | Cole Uvila | — | Texas Rangers | Texas Rangers signed RHP Cole Uvila. |
| Jun 14, 2018 | Signed | Austin Dennis | — | Houston Astros | Houston Astros signed OF Austin Dennis. |
| Jun 14, 2018 | Signed | Logan Mattix | — | Houston Astros | Houston Astros signed OF Logan Mattix. |
| Jun 14, 2018 | Signed | Trey Dawson | — | Houston Astros | Houston Astros signed SS Trey Dawson. |
| Jun 14, 2018 | Signed | Michael Wielansky | — | Houston Astros | Houston Astros signed SS Michael Wielansky. |
| Jun 14, 2018 | Signed | Alex Holderbach | — | Houston Astros | Houston Astros signed C Alex Holderbach. |
| Jun 14, 2018 | Signed | Dylan Coleman | — | San Diego Padres | San Diego Padres signed RHP Dylan Coleman. |
| Jun 14, 2018 | Signed | Steven Wilson | — | San Diego Padres | San Diego Padres signed RHP Steven Wilson. |
| Jun 14, 2018 | Signed | Gabe Mosser | — | San Diego Padres | San Diego Padres signed RHP Gabe Mosser. |
| Jun 14, 2018 | Signed | Dwanya Williams-Sutton | — | San Diego Padres | San Diego Padres signed OF Dwanya Williams-Sutton. |
| Jun 14, 2018 | Signed | Michael Curry | — | San Diego Padres | San Diego Padres signed OF Michael Curry. |
| Jun 14, 2018 | Signed | Luke Becker | — | San Diego Padres | San Diego Padres signed 2B Luke Becker. |
| Jun 14, 2018 | Signed | Owen Miller | — | San Diego Padres | San Diego Padres signed SS Owen Miller. |
| Jun 14, 2018 | Signed | Nick Dunn | — | St. Louis Cardinals | St. Louis Cardinals signed 2B Nick Dunn. |
| Jun 14, 2018 | Signed | Edgar Gonzalez | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Edgar Gonzalez. |
| Jun 14, 2018 | Signed | Brendan Donovan | — | St. Louis Cardinals | St. Louis Cardinals signed 3B Brendan Donovan. |
| Jun 14, 2018 | Signed | Lars Nootbaar | — | St. Louis Cardinals | St. Louis Cardinals signed LF Lars Nootbaar. |
| Jun 14, 2018 | Signed | Matt Duce | — | St. Louis Cardinals | St. Louis Cardinals signed C Matthew Duce. |
| Jun 14, 2018 | Signed | Kevin Woodall | — | St. Louis Cardinals | St. Louis Cardinals signed 1B Kevin Woodall. |
| Jun 14, 2018 | Signed | Chris Holba | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Chris Holba. |
| Jun 14, 2018 | Signed | Francisco Justo | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Francisco Justo. |
| Jun 14, 2018 | Signed | Evan Sisk | — | St. Louis Cardinals | St. Louis Cardinals signed LHP Evan Sisk. |
| Jun 14, 2018 | Signed | Kyle Leahy | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Kyle Leahy. |
| Jun 14, 2018 | Signed | Josh Shaw | — | St. Louis Cardinals | St. Louis Cardinals signed 2B Josh Shaw. |
| Jun 14, 2018 | Signed | Kevin Vargas | — | St. Louis Cardinals | St. Louis Cardinals signed SS Kevin Vargas. |
| Jun 14, 2018 | Signed | Jake Lee | — | Los Angeles Angels | Los Angeles Angels signed RHP Jake Lee. |
| Jun 14, 2018 | Signed | Ben Morrison | — | Los Angeles Angels | Los Angeles Angels signed RHP Ben Morrison. |
| Jun 14, 2018 | Signed | Troy Montemayor | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Troy Montemayor. |
| Jun 14, 2018 | Signed | Connor Coward | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Connor Coward. |
| Jun 14, 2018 | Signed | Tyler Smith | — | Los Angeles Angels | Los Angeles Angels signed RHP Tyler Smith. |
| Jun 14, 2018 | Signed | Kyle Tyler | — | Los Angeles Angels | Los Angeles Angels signed RHP Kyle Tyler. |
| Jun 14, 2018 | Signed | Andrew Wantz | — | Los Angeles Angels | Los Angeles Angels signed RHP Andrew Wantz. |
| Jun 14, 2018 | Signed | Austin Warren | — | Los Angeles Angels | Los Angeles Angels signed RHP Austin Warren. |
| Jun 14, 2018 | Signed | Griffin Barnes | — | Los Angeles Angels | Los Angeles Angels signed C Griffin Barnes. |
| Jun 14, 2018 | Signed | Perry DellaValle | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Perry DellaValle. |
| Jun 14, 2018 | Signed | Tim Millard | — | Los Angeles Angels | Los Angeles Angels signed 3B Tim Millard. |
| Jun 14, 2018 | Signed | Mitch Spires | — | Los Angeles Angels | Los Angeles Angels signed SS Mitch Spires. |
| Jun 14, 2018 | Signed | Justin Toerner | — | St. Louis Cardinals | St. Louis Cardinals signed CF Justin Toerner. |
| Jun 14, 2018 | Signed | Ty Cohen | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Ty Cohen. |
| Jun 14, 2018 | Signed | Brandon Purcell | — | St. Louis Cardinals | St. Louis Cardinals signed C Brandon Purcell. |
| Jun 14, 2018 | Signed | Chris Rivera | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Chris Rivera. |
| Jun 14, 2018 | Signed | Christian Caudle | — | St. Louis Cardinals | St. Louis Cardinals signed C Christian Caudle. |
| Jun 14, 2018 | Signed as free agent | Cole Taylor | — | Los Angeles Angels | Los Angeles Angels signed free agent SS Cole Taylor to a minor league contract. |
| Jun 14, 2018 | Signed | Andrew Warner | — | St. Louis Cardinals | St. Louis Cardinals signed OF Andrew Warner. |
| Jun 14, 2018 | Signed | Daniel Amaral | — | Pittsburgh Pirates | Pittsburgh Pirates signed OF Daniel Amaral. |
| Jun 14, 2018 | Signed | Ryan Haug | — | Pittsburgh Pirates | Pittsburgh Pirates signed C Ryan Haug. |
| Jun 14, 2018 | Signed | Nick Patten | — | Pittsburgh Pirates | Pittsburgh Pirates signed 1B Nick Patten. |
| Jun 14, 2018 | Signed | Justin Harrer | — | Pittsburgh Pirates | Pittsburgh Pirates signed 3B Justin Harrer. |
| Jun 14, 2018 | Signed as free agent | José A. Váldez | — | San Francisco Giants | San Francisco Giants signed free agent RHP Jose Valdez to a minor league contract. |
| Jun 14, 2018 | Signed as free agent | Andy LaRoche | — | Kansas City Royals | Kansas City Royals signed free agent 3B Andy LaRoche to a minor league contract. |
| Jun 14, 2018 | Signed | Kole Cottam | — | Boston Red Sox | Boston Red Sox signed C Kole Cottam. |
| Jun 14, 2018 | Signed | Korby Batesole | — | Boston Red Sox | Boston Red Sox signed SS Korby Batesole. |
| Jun 14, 2018 | Signed as free agent | Jay Estes | — | Chicago White Sox | Chicago White Sox signed free agent IF Jay Estes to a minor league contract. |
| Jun 14, 2018 | Signed as free agent | Cesar Berbesi | — | New York Mets | New York Mets signed free agent SS Cesar Berbesi to a minor league contract. |
| Jun 14, 2018 | Signed as free agent | Kelvin Pena | — | Atlanta Braves | Atlanta Braves signed free agent C Kelvin Pena to a minor league contract. |
| Jun 14, 2018 | Signed | Shawn Dubin | — | Houston Astros | Houston Astros signed RHP Shawn Dubin. |
| Jun 14, 2018 | Signed | Blake Workman | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Blake Workman. |
| Jun 14, 2018 | Signed as free agent | Madison Younginer IV | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Madison Younginer to a minor league contract. |
| Jun 14, 2018 | Signed | Hunter Feduccia | — | Los Angeles Dodgers | Los Angeles Dodgers signed C Hunter Feduccia. |
| Jun 14, 2018 | Signed | Theo McDowell | — | Texas Rangers | Texas Rangers signed RHP Theo McDowell. |
| Jun 14, 2018 | Signed | Nick Ernst | — | New York Yankees | New York Yankees signed RHP Nick Ernst. |
| Jun 14, 2018 | Signed as free agent | Antonio Jimenez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LHP Antonio Jimenez to a minor league contract. |
| Jun 14, 2018 | Signed | Stephen Kolek | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Stephen Kolek. |
| Jun 14, 2018 | Signed as free agent | Isaias Sangrona | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Isaias Sangrona to a minor league contract. |
| Jun 14, 2018 | Signed as free agent | Yostin Villalobos | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Yostin Villalobos to a minor league contract. |
| Jun 14, 2018 | Signed as free agent | Jean Ramirez | — | Kansas City Royals | Kansas City Royals signed free agent OF Jean Ramirez to a minor league contract. |
| Jun 14, 2018 | Signed as free agent | Harold Restituyo | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Harold Restituyo to a minor league contract. |
| Jun 14, 2018 | Signed as free agent | Leonardo Vargas | — | Atlanta Braves | Atlanta Braves signed free agent RHP Leonardo Vargas to a minor league contract. |
| Jun 14, 2018 | Signed as free agent | Lun Zhao | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Lun Zhao to a minor league contract. |
| Jun 13, 2018 | Signed | Jeremy Peña | — | Houston Astros | Houston Astros signed SS Jeremy Pena. |
| Jun 13, 2018 | Signed | Cody Deason | — | Houston Astros | Houston Astros signed RHP Cody Deason. |
| Jun 13, 2018 | Signed | Austin Hansen | — | Houston Astros | Houston Astros signed RHP Austin Hansen. |
| Jun 13, 2018 | Signed | Mark Moclair | — | Houston Astros | Houston Astros signed RHP Mark Moclair. |
| Jun 13, 2018 | Signed | Juan Paulino | — | Houston Astros | Houston Astros signed C Juan Paulino. |
| Jun 13, 2018 | Signed | Layne Henderson | — | Houston Astros | Houston Astros signed RHP Layne Henderson. |
| Jun 13, 2018 | Signed | Tim Cate | — | Washington Nationals | Washington Nationals signed LHP Tim Cate. |
| Jun 13, 2018 | Signed | Gage Canning | — | Washington Nationals | Washington Nationals signed OF Gage Canning. |
| Jun 13, 2018 | Signed | Andrew Karp | — | Washington Nationals | Washington Nationals signed RHP Andrew Karp. |
| Jun 13, 2018 | Signed | Tyler Cropley | — | Washington Nationals | Washington Nationals signed C Tyler Cropley. |
| Jun 13, 2018 | Signed | Tanner Driskill | — | Washington Nationals | Washington Nationals signed RHP Tanner Driskill. |
| Jun 13, 2018 | Signed | Frankie Bartow | — | Washington Nationals | Washington Nationals signed RHP Frankie Bartow. |
| Jun 13, 2018 | Signed | Cody Wilson | — | Washington Nationals | Washington Nationals signed OF Cody Wilson. |
| Jun 13, 2018 | Signed | Aaron Fletcher | — | Washington Nationals | Washington Nationals signed LHP Aaron Fletcher. |
| Jun 13, 2018 | Signed | Carson Teel | — | Washington Nationals | Washington Nationals signed LHP Carson Teel. |
| Jun 13, 2018 | Signed | Jacob Rhinesmith | — | Washington Nationals | Washington Nationals signed OF Jacob Rhinesmith. |
| Jun 13, 2018 | Signed | Onix Vega | — | Washington Nationals | Washington Nationals signed C Onix Vega. |
| Jun 13, 2018 | Signed | Ryan Tapani | — | Washington Nationals | Washington Nationals signed RHP Ryan Tapani. |
| Jun 13, 2018 | Signed | Cole Daily | — | Washington Nationals | Washington Nationals signed SS Cole Daily. |
| Jun 13, 2018 | Signed | Christian Vann | — | Washington Nationals | Washington Nationals signed LHP Chris Vann. |
| Jun 13, 2018 | Signed | Colin Morse | — | Washington Nationals | Washington Nationals signed RHP Colin Morse. |
| Jun 13, 2018 | Signed | Pablo O'Connor | — | Washington Nationals | Washington Nationals signed OF Pablo O'Connor. |
| Jun 13, 2018 | Signed | Blake Chisolm | — | Washington Nationals | Washington Nationals signed 1B Blake Chisolm. |
| Jun 13, 2018 | Signed | Colton Pogue | — | Washington Nationals | Washington Nationals signed SS Colton Pogue. |
| Jun 13, 2018 | Signed | Tre Vickers | — | Washington Nationals | Washington Nationals signed SS Trey Vickers. |
| Jun 13, 2018 | Signed | Jonathan Quintana | — | Washington Nationals | Washington Nationals signed OF Jonathan Quintana. |
| Jun 13, 2018 | Signed | Alec Maley | — | Washington Nationals | Washington Nationals signed RHP Alec Maley. |
| Jun 13, 2018 | Signed | Bobby Milacki | — | Washington Nationals | Washington Nationals signed RHP Bobby Milacki. |
| Jun 13, 2018 | Signed | J.T. Hintzen | — | Milwaukee Brewers | Milwaukee Brewers signed RHP J.T. Hintzen. |
| Jun 13, 2018 | Signed | Brady Schanuel | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Brady Schanuel. |
| Jun 13, 2018 | Signed | Scott Sunitsch | — | Milwaukee Brewers | Milwaukee Brewers signed LHP Scott Sunitsch. |
| Jun 13, 2018 | Signed | David Fry | — | Milwaukee Brewers | Milwaukee Brewers signed C David Fry. |
| Jun 13, 2018 | Signed | Ryan Rolison | — | Colorado Rockies | Colorado Rockies signed LHP Ryan Rolison. |
| Jun 13, 2018 | Signed | Lency Delgado | — | Chicago White Sox | Chicago White Sox signed SS Lency Delgado. |
| Jun 13, 2018 | Signed | Jonathan Stiever | — | Chicago White Sox | Chicago White Sox signed RHP Jonathan Stiever. |
| Jun 13, 2018 | Signed | Codi Heuer | — | Chicago White Sox | Chicago White Sox signed RHP Codi Heuer. |
| Jun 13, 2018 | Signed | Caberea Weaver | — | Chicago White Sox | Chicago White Sox signed OF Cabera Weaver. |
| Jun 13, 2018 | Signed | Andrew Pérez | — | Chicago White Sox | Chicago White Sox signed LHP Andrew Perez. |
| Jun 13, 2018 | Signed | Gunnar Troutwine | — | Chicago White Sox | Chicago White Sox signed C Gunnar Troutwine. |
| Jun 13, 2018 | Signed | Bennett Sousa | — | Chicago White Sox | Chicago White Sox signed LHP Bennett Sousa. |
| Jun 13, 2018 | Signed | Luke Shilling | — | Chicago White Sox | Chicago White Sox signed RHP Luke Shilling. |
| Jun 13, 2018 | Signed | Kelvin Maldonado | — | Chicago White Sox | Chicago White Sox signed SS Kelvin Maldonado. |
| Jun 13, 2018 | Signed | Jason Bilous | — | Chicago White Sox | Chicago White Sox signed RHP Jason Bilous. |
| Jun 13, 2018 | Signed | Travis Moniot | — | Chicago White Sox | Chicago White Sox signed SS Travis Moniot. |
| Jun 13, 2018 | Signed | Romy Gonzalez | — | Chicago White Sox | Chicago White Sox signed 2B Romy Gonzalez. |
| Jun 13, 2018 | Signed | Gabriel Ortiz | — | Chicago White Sox | Chicago White Sox signed C Gabriel Ortiz. |
| Jun 13, 2018 | Signed | Jimmy Galusky | — | Chicago White Sox | Chicago White Sox signed SS Jimmy Galusky. |
| Jun 13, 2018 | Signed | Nick Johnson | — | Chicago White Sox | Chicago White Sox signed RHP Nick Johnson. |
| Jun 13, 2018 | Signed | Lane Ramsey | — | Chicago White Sox | Chicago White Sox signed RHP Lane Ramsey. |
| Jun 13, 2018 | Signed | Rigo Fernandez | — | Chicago White Sox | Chicago White Sox signed LHP Rigo Fernandez. |
| Jun 13, 2018 | Signed | Jack Maynard | — | Chicago White Sox | Chicago White Sox signed RHP Jack Maynard. |
| Jun 13, 2018 | Signed | Devon Perez | — | Chicago White Sox | Chicago White Sox signed RHP Devon Perez. |
| Jun 13, 2018 | Signed | Ian Dawkins | — | Chicago White Sox | Chicago White Sox signed OF Ian Dawkins. |
| Jun 13, 2018 | Signed | Logan Sowers | — | Chicago White Sox | Chicago White Sox signed OF Logan Sowers. |
| Jun 13, 2018 | Signed | Taylor Varnell | — | Chicago White Sox | Chicago White Sox signed LHP Taylor Varnell. |
| Jun 13, 2018 | Signed | Austin Conway | — | Chicago White Sox | Chicago White Sox signed RHP Austin Conway. |
| Jun 13, 2018 | Signed | Aaron Soto | — | Chicago White Sox | Chicago White Sox signed LHP Aaron Soto. |
| Jun 13, 2018 | Signed | Ryan Feltner | — | Colorado Rockies | Colorado Rockies signed RHP Ryan Feltner. |
| Jun 13, 2018 | Signed | Jake Bird | — | Colorado Rockies | Colorado Rockies signed RHP Jacob Bird. |
| Jun 13, 2018 | Signed | Niko Decolati | — | Colorado Rockies | Colorado Rockies signed OF Niko Decolati. |
| Jun 13, 2018 | Signed | Nick Bush | — | Colorado Rockies | Colorado Rockies signed LHP Nick Bush. |
| Jun 13, 2018 | Signed | Cade Harris | — | Colorado Rockies | Colorado Rockies signed OF Cade Harris. |
| Jun 13, 2018 | Signed | PJ Poulin | — | Colorado Rockies | Colorado Rockies signed LHP PJ Poulin. |
| Jun 13, 2018 | Signed | Rayne Supple | — | Colorado Rockies | Colorado Rockies signed RHP Rayne Supple. |
| Jun 13, 2018 | Signed as free agent | Johnny Bladel | — | Boston Red Sox | Boston Red Sox signed free agent OF Johnny Bladel to a minor league contract. |
| Jun 13, 2018 | Signed | Will Tribucher | — | Colorado Rockies | Colorado Rockies signed LHP Will Tribucher. |
| Jun 13, 2018 | Signed | Boby Johnson | — | Colorado Rockies | Colorado Rockies signed RHP Boby Johnson. |
| Jun 13, 2018 | Signed | Reese Berberet | — | Colorado Rockies | Colorado Rockies signed 3B Reese Berberet. |
| Jun 13, 2018 | Signed | Shelby Lackey | — | Colorado Rockies | Colorado Rockies signed RHP Shelby Lackey. |
| Jun 13, 2018 | Signed | Zach Hall | — | Colorado Rockies | Colorado Rockies signed OF Zach Hall. |
| Jun 13, 2018 | Signed | Luke Morgan | — | Colorado Rockies | Colorado Rockies signed OF Luke Morgan. |
| Jun 13, 2018 | Signed | Jacob Barnwell | — | Colorado Rockies | Colorado Rockies signed C Jacob Barnwell. |
| Jun 13, 2018 | Signed | Colten Schmidt | — | Colorado Rockies | Colorado Rockies signed LHP Colten Schmidt. |
| Jun 13, 2018 | Signed | Trent Fennell | — | Colorado Rockies | Colorado Rockies signed RHP Trent Fennell. |
| Jun 13, 2018 | Signed | Seth Beer | — | Houston Astros | Houston Astros signed OF Seth Beer. |
| Jun 13, 2018 | Signed | Robert Metz | — | Colorado Rockies | Colorado Rockies signed 2B Robert Metz. |
| Jun 13, 2018 | Signed | Will Golsan | — | Colorado Rockies | Colorado Rockies signed OF Will Golsan. |
| Jun 13, 2018 | Signed | Eric Hepple | — | Colorado Rockies | Colorado Rockies signed RHP Eric Hepple. |
| Jun 13, 2018 | Signed | John Cresto | — | Colorado Rockies | Colorado Rockies signed 3B John Cresto. |
| Jun 13, 2018 | Signed | Colton Harlow | — | Colorado Rockies | Colorado Rockies signed LHP Colton Harlow. |
| Jun 13, 2018 | Signed | Joel Condreay | — | Colorado Rockies | Colorado Rockies signed RHP Joel Condreay. |
| Jun 13, 2018 | Signed | Reagan Todd | — | Colorado Rockies | Colorado Rockies signed LHP Reagan Todd. |
| Jun 13, 2018 | Signed | Connor Scott | — | Miami Marlins | Miami Marlins signed OF Connor Scott. |
| Jun 13, 2018 | Signed | Chris Vallimont | — | Miami Marlins | Miami Marlins signed RHP Chris Vallimont. |
| Jun 13, 2018 | Signed | Cason Sherrod | — | Miami Marlins | Miami Marlins signed RHP Cason Sherrod. |
| Jun 13, 2018 | Signed | Peyton Culbertson | — | Miami Marlins | Miami Marlins signed RHP Peyton Culbertson. |
| Jun 13, 2018 | Signed | Jake Walters | — | Miami Marlins | Miami Marlins signed RHP Jake Walters. |
| Jun 13, 2018 | Signed | Tanner Andrews | — | Miami Marlins | Miami Marlins signed RHP Tanner Andrews. |
| Jun 13, 2018 | Signed | Davis Bradshaw | — | Miami Marlins | Miami Marlins signed OF Davis Bradshaw. |
| Jun 13, 2018 | Signed | Keegan Fish | — | Miami Marlins | Miami Marlins signed C Keegan Fish. |
| Jun 13, 2018 | Signed | Connor Grant | — | Miami Marlins | Miami Marlins signed OF Connor Grant. |
| Jun 13, 2018 | Signed | Milton Smith II | — | Miami Marlins | Miami Marlins signed OF Milton Smith Jr. |
| Jun 13, 2018 | Signed | Giovanni Lopez | — | Miami Marlins | Miami Marlins signed RHP Giovanni Lopez. |
| Jun 13, 2018 | Signed | Nathan Alexander | — | Miami Marlins | Miami Marlins signed RHP Nathan Alexander. |
| Jun 13, 2018 | Signed | Harrison Dinicola | — | Miami Marlins | Miami Marlins signed OF Harrison Dinicola. |
| Jun 13, 2018 | Signed | Gunnar Schubert | — | Miami Marlins | Miami Marlins signed SS Gunnar Schubert. |
| Jun 13, 2018 | Signed | Andrew Turner | — | Miami Marlins | Miami Marlins signed 3B Andrew Turner. |
| Jun 13, 2018 | Signed | César Salazar | — | Houston Astros | Houston Astros signed C Cesar Salazar. |
| Jun 13, 2018 | Signed | Chandler Taylor | — | Houston Astros | Houston Astros signed OF Chandler Taylor. |
| Jun 13, 2018 | Signed | Marty Costes | — | Houston Astros | Houston Astros signed OF Marty Costes. |
| Jun 13, 2018 | Signed | David Hensley | — | Houston Astros | Houston Astros signed SS David Hensley. |
| Jun 13, 2018 | Signed | Griffin Roberts | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Griffin Roberts. |
| Jun 13, 2018 | Signed | Luken Baker | — | St. Louis Cardinals | St. Louis Cardinals signed 1B Luken Baker. |
| Jun 13, 2018 | Signed | Mateo Gil | — | St. Louis Cardinals | St. Louis Cardinals signed SS Mateo Gil. |
| Jun 13, 2018 | Signed | Nolan Gorman | — | St. Louis Cardinals | St. Louis Cardinals signed 3B Nolan Gorman. |
| Jun 13, 2018 | Signed | Coco Montes | — | Colorado Rockies | Colorado Rockies signed SS Coco Montes. |
| Jun 13, 2018 | Signed | Jonah Davis | — | Pittsburgh Pirates | Pittsburgh Pirates signed OF Jonah Davis. |
| Jun 13, 2018 | Signed | Colin Selby | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Colin Selby. |
| Jun 13, 2018 | Signed | Will Kobos | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Will Kobos. |
| Jun 13, 2018 | Signed | Conner Loeprich | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Conner Loeprich. |
| Jun 13, 2018 | Signed | Will Gardner | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Will Gardner. |
| Jun 13, 2018 | Signed | Chase Lambert | — | Pittsburgh Pirates | Pittsburgh Pirates signed SS Chase Lambert. |
| Jun 13, 2018 | Signed | Dean Lockery | — | Pittsburgh Pirates | Pittsburgh Pirates signed 2B Dean Lockery. |
| Jun 13, 2018 | Signed | Joe Jacques | — | Pittsburgh Pirates | Pittsburgh Pirates signed LHP Joe Jacques. |
| Jun 13, 2018 | Signed | Brendt Citta | — | Pittsburgh Pirates | Pittsburgh Pirates signed OF Brendt Citta. |
| Jun 13, 2018 | Signed | Nick Sandlin | — | Cleveland Guardians | Cleveland Indians signed RHP Nick Sandlin. |
| Jun 13, 2018 | Signed | Richie Palacios | — | Cleveland Guardians | Cleveland Indians signed SS Richard Palacios. |
| Jun 13, 2018 | Signed | Adam Scott | — | Cleveland Guardians | Cleveland Indians signed LHP Adam Scott. |
| Jun 13, 2018 | Signed | Raynel Delgado | — | Cleveland Guardians | Cleveland Indians signed 3B Raynel Delgado. |
| Jun 13, 2018 | Signed | Alex Royalty | — | Cleveland Guardians | Cleveland Indians signed RHP Alex Royalty. |
| Jun 13, 2018 | Signed | Robert Broom | — | Cleveland Guardians | Cleveland Indians signed RHP Robert Broom. |
| Jun 13, 2018 | Signed | Thomas Ponticelli | — | Cleveland Guardians | Cleveland Indians signed RHP Thomas Ponticelli. |
| Jun 13, 2018 | Signed | Bryan Lavastida | — | Cleveland Guardians | Cleveland Indians signed C Bryan Lavastida. |
| Jun 13, 2018 | Signed | Liam Jenkins | — | Cleveland Guardians | Cleveland Indians signed RHP Liam Jenkins. |
| Jun 13, 2018 | Signed | Shane McCarthy | — | Cleveland Guardians | Cleveland Indians signed RHP Shane McCarthy. |
| Jun 13, 2018 | Signed | Jake Miednik | — | Cleveland Guardians | Cleveland Indians signed LHP Jake Miednik. |
| Jun 13, 2018 | Signed | Eric Rodriguez | — | Cleveland Guardians | Cleveland Indians signed C Eric Rodriguez. |
| Jun 13, 2018 | Signed | Eli Lingos | — | Cleveland Guardians | Cleveland Indians signed LHP Eli Lingos. |
| Jun 13, 2018 | Signed | Aaron Pinto | — | Cleveland Guardians | Cleveland Indians signed RHP Aaron Pinto. |
| Jun 13, 2018 | Signed | Kellen Rholl | — | Cleveland Guardians | Cleveland Indians signed LHP Kellen Rholl. |
| Jun 13, 2018 | Signed | Gionti Turner | — | Cleveland Guardians | Cleveland Indians signed SS Gionti Turner. |
| Jun 13, 2018 | Signed | Billy Wilson | — | Cleveland Guardians | Cleveland Indians signed OF Billy Wilson. |
| Jun 13, 2018 | Signed | Tim Herrin | — | Cleveland Guardians | Cleveland Indians signed LHP Tim Herrin. |
| Jun 13, 2018 | Signed | Jonathan Engelmann | — | Cleveland Guardians | Cleveland Indians signed OF Jonathan Engelmann. |
| Jun 13, 2018 | Signed | Daniel Schneemann | — | Cleveland Guardians | Cleveland Indians signed SS Daniel Schneemann. |
| Jun 13, 2018 | Signed | Anthony Seigler | — | New York Yankees | New York Yankees signed C Anthony Seigler. |
| Jun 13, 2018 | Signed | Josh Breaux | — | New York Yankees | New York Yankees signed C Josh Breaux. |
| Jun 13, 2018 | Signed | Ryder Green | — | New York Yankees | New York Yankees signed OF Ryder Green. |
| Jun 13, 2018 | Signed | Frank German | — | New York Yankees | New York Yankees signed RHP Frank German. |
| Jun 13, 2018 | Signed | Brandon Lockridge | — | New York Yankees | New York Yankees signed OF Brandon Lockridge. |
| Jun 13, 2018 | Signed | Daniel Bies | — | New York Yankees | New York Yankees signed RHP Daniel Bies. |
| Jun 13, 2018 | Signed | Connor Van Hoose | — | New York Yankees | New York Yankees signed RHP Connor Van Hoose. |
| Jun 13, 2018 | Signed | Mick Vorhof | — | New York Yankees | New York Yankees signed RHP Mick Vorhof. |
| Jun 13, 2018 | Signed | Josh Maciejewski | — | New York Yankees | New York Yankees signed LHP Josh Maciejewski. |
| Jun 13, 2018 | Signed as free agent | Alejandro Peguero | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent SS Alejandro Alcide to a minor league contract. |
| Jun 13, 2018 | Signed as free agent | Pablo Pimentel | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Pablo Pimentel to a minor league contract. |
| Jun 13, 2018 | Signed as free agent | Bladimir Susana | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 2B Bladimir Susana to a minor league contract. |
| Jun 13, 2018 | Signed as free agent | Frank Duncan | — | Colorado Rockies | Colorado Rockies signed free agent RHP Frank Duncan to a minor league contract. |
| Jun 13, 2018 | Signed | Nick Fortes | — | Miami Marlins | Miami Marlins signed C Nick Fortes. |
| Jun 13, 2018 | Signed as free agent | Tate Budnick | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Tate Budnick to a minor league contract. |
| Jun 13, 2018 | Signed as free agent | Domingo Gonzalez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Domingo Gonzalez to a minor league contract. |
| Jun 13, 2018 | Signed as free agent | Tyler Palm | — | Minnesota Twins | Minnesota Twins signed free agent RHP Tyler Palm to a minor league contract. |
| Jun 13, 2018 | Signed as free agent | Jackson Rees | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Jackson Rees to a minor league contract. |
| Jun 13, 2018 | Signed as free agent | Connor McVey | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 3B Connor McVey to a minor league contract. |
| Jun 13, 2018 | Signed as free agent | Enrique Santana | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Enrique Santana to a minor league contract. |
| Jun 13, 2018 | Signed as free agent | Tyler Tungate | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Tyler Tungate to a minor league contract. |
| Jun 13, 2018 | Signed as free agent | Carter Love | — | Chicago White Sox | Chicago White Sox signed free agent RHP Carter Love to a minor league contract. |
| Jun 13, 2018 | Signed as free agent | Renny Tolentino | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Renny Tolentino to a minor league contract. |
| Jun 13, 2018 | Signed as free agent | Zach Hoffpauir | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Zach Hoffpauir to a minor league contract. |
| Jun 13, 2018 | Signed | Jacob Blank | — | Minnesota Twins | Minnesota Twins signed RHP Jacob Blank. |
| Jun 13, 2018 | Signed | Andrew Cabezas | — | Minnesota Twins | Minnesota Twins signed RHP Andrew Cabezas. |
| Jun 13, 2018 | Signed | Kody Funderburk | — | Minnesota Twins | Minnesota Twins signed LHP Kody Funderburk. |
| Jun 13, 2018 | Signed | Seth Pinkerton | — | Minnesota Twins | Minnesota Twins signed RHP Seth Pinkerton. |
| Jun 13, 2018 | Signed | Brian Rapp | — | Minnesota Twins | Minnesota Twins signed RHP Brian Rapp. |
| Jun 13, 2018 | Signed | Austin Schulfer | — | Minnesota Twins | Minnesota Twins signed RHP Austin Schulfer. |
| Jun 13, 2018 | Signed | Trevor Casanova | — | Minnesota Twins | Minnesota Twins signed C Trevor Casanova. |
| Jun 13, 2018 | Signed | Ryan Jeffers | — | Minnesota Twins | Minnesota Twins signed C Ryan Jeffers. |
| Jun 13, 2018 | Signed | Hunter Lee | — | Minnesota Twins | Minnesota Twins signed 2B Hunter Lee. |
| Jun 13, 2018 | Signed | Chris Williams | — | Minnesota Twins | Minnesota Twins signed C Chris Williams. |
| Jun 13, 2018 | Signed | DaShawn Keirsey Jr. | — | Minnesota Twins | Minnesota Twins signed OF DaShawn Keirsey. |
| Jun 13, 2018 | Signed | Albee Weiss | — | Minnesota Twins | Minnesota Twins signed OF Albee Weiss. |
| Jun 13, 2018 | Signed as free agent | Jander Dilone | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Jander Dilone to a minor league contract. |
| Jun 13, 2018 | Signed | Mitch Hickey | — | New York Mets | New York Mets signed RHP Mitch Hickey. |
| Jun 13, 2018 | Signed | Jacob Gilliland | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Jacob Gilliland. |
| Jun 13, 2018 | Signed | Austin Drury | — | Los Angeles Dodgers | Los Angeles Dodgers signed LHP Austin Drury. |
| Jun 13, 2018 | Signed | Drew Wharton | — | Chicago Cubs | Chicago Cubs signed OF Drew Wharton. |
| Jun 13, 2018 | Signed | Reggie Meyer | — | Texas Rangers | Texas Rangers signed RHP Reggie Meyer. |
| Jun 13, 2018 | Signed as free agent | Alberto Sojo | — | Chicago Cubs | Chicago Cubs signed free agent RHP Alberto Sojo to a minor league contract. |
| Jun 12, 2018 | Signed | Aaron Shortridge | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Aaron Shortridge. |
| Jun 12, 2018 | Signed | Michael Flynn | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Michael Flynn. |
| Jun 12, 2018 | Signed | Brett Kinneman | — | Pittsburgh Pirates | Pittsburgh Pirates signed OF Brett Kinneman. |
| Jun 12, 2018 | Signed | Zach Spears | — | Pittsburgh Pirates | Pittsburgh Pirates signed LHP Zach Spears. |
| Jun 12, 2018 | Signed | Logan Stoelke | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Logan Stoelke. |
| Jun 12, 2018 | Signed | Zac Susi | — | Pittsburgh Pirates | Pittsburgh Pirates signed C Zach Susi. |
| Jun 12, 2018 | Signed | Brad Case | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Brad Case. |
| Jun 12, 2018 | Signed | Grayson Rodriguez | — | Baltimore Orioles | Baltimore Orioles signed RHP Grayson Rodriguez. |
| Jun 12, 2018 | Signed as free agent | Matt Belisle | — | Minnesota Twins | Minnesota Twins signed free agent RHP Matt Belisle. |
| Jun 12, 2018 | Signed | Erin Baldwin | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Erin Baldwin. |
| Jun 12, 2018 | Signed | Justin Garcia | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Justin Garcia. |
| Jun 12, 2018 | Signed as free agent | Tyler Jandron | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Tyler Jandron to a minor league contract. |
| Jun 12, 2018 | Signed as free agent | Matt Ladrech | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Matthew Ladrech to a minor league contract. |
| Jun 12, 2018 | Signed | Bryan Menendez | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Bryan Menendez. |
| Jun 12, 2018 | Signed | Jacob Stevens | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Jacob Stevens. |
| Jun 12, 2018 | Signed | Andy Toelken | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Andy Toelken. |
| Jun 12, 2018 | Signed | Landon Whitson | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Landon Whitson. |
| Jun 12, 2018 | Signed | Zack Shannon | — | Arizona Diamondbacks | Arizona Diamondbacks signed 1B Zack Shannon. |
| Jun 12, 2018 | Signed | Alec Bohm | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Alec Bohm. |
| Jun 12, 2018 | Signed | Matt Vierling | — | Philadelphia Phillies | Philadelphia Phillies signed OF Matt Vierling. |
| Jun 12, 2018 | Signed | Kendall Simmons | — | Philadelphia Phillies | Philadelphia Phillies signed SS Logan Simmons. |
| Jun 12, 2018 | Signed | Seth Lancaster | — | Philadelphia Phillies | Philadelphia Phillies signed SS Seth Lancaster. |
| Jun 12, 2018 | Signed | James McArthur | — | Philadelphia Phillies | Philadelphia Phillies signed RHP James McArthur. |
| Jun 12, 2018 | Signed | Jose Mercado | — | Philadelphia Phillies | Philadelphia Phillies signed SS Jose Mercado. |
| Jun 12, 2018 | Signed | Matt Kroon | — | Philadelphia Phillies | Philadelphia Phillies signed 3B Matt Kroon. |
| Jun 12, 2018 | Signed | Mark Potter | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Mark Potter. |
| Jun 12, 2018 | Signed | Connor Litton | — | Philadelphia Phillies | Philadelphia Phillies signed 3B Connor Litton. |
| Jun 12, 2018 | Signed | Luke Miller | — | Philadelphia Phillies | Philadelphia Phillies signed 3B Luke Miller. |
| Jun 12, 2018 | Signed | Logan O'Hoppe | — | Philadelphia Phillies | Philadelphia Phillies signed C Logan O'Hoppe. |
| Jun 12, 2018 | Signed | Corbin Williams | — | Philadelphia Phillies | Philadelphia Phillies signed OF Corbin Williams. |
| Jun 12, 2018 | Signed | Adam Cox | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Adam Cox. |
| Jun 12, 2018 | Signed | Eric White | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Eric White. |
| Jun 12, 2018 | Signed | Jaylen Smith | — | Philadelphia Phillies | Philadelphia Phillies signed LHP Jaylen Smith. |
| Jun 12, 2018 | Signed | Tyler Carr | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Tyler Carr. |
| Jun 12, 2018 | Signed | Ben Aklinski | — | Philadelphia Phillies | Philadelphia Phillies signed OF Ben Aklinski. |
| Jun 12, 2018 | Signed | Nick Matera | — | Philadelphia Phillies | Philadelphia Phillies signed C Nick Matera. |
| Jun 12, 2018 | Signed | Austin Ross | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Austin Ross. |
| Jun 12, 2018 | Signed | Trent Bowles | — | Philadelphia Phillies | Philadelphia Phillies signed OF Trent Bowles. |
| Jun 12, 2018 | Signed | Brian Christian | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Brian Christian. |
| Jun 12, 2018 | Signed | Josh Green | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Josh Green. |
| Jun 12, 2018 | Signed | Ethan Larrison | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Ethan Larrison. |
| Jun 12, 2018 | Signed as free agent | Trevor McKenna | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Trevor McKenna to a minor league contract. |
| Jun 12, 2018 | Signed as free agent | Ryan Ricci | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Ryan Ricci to a minor league contract. |
| Jun 12, 2018 | Signed | Kyler Stout | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Kyler Stout. |
| Jun 12, 2018 | Signed | Lyon Richardson | — | Cincinnati Reds | Cincinnati Reds signed RHP Lyon Richardson. |
| Jun 12, 2018 | Signed | Ryan Campbell | — | Cincinnati Reds | Cincinnati Reds signed RHP Ryan Campbell. |
| Jun 12, 2018 | Signed | Josiah Gray | — | Cincinnati Reds | Cincinnati Reds signed RHP Josiah Gray. |
| Jun 12, 2018 | Signed | Yomil Maysonet | — | Cincinnati Reds | Cincinnati Reds signed RHP Yomil Maysonet. |
| Jun 12, 2018 | Signed | Jay Schuyler | — | Cincinnati Reds | Cincinnati Reds signed C Jay Schuyler. |
| Jun 12, 2018 | Signed | Matt Pidich | — | Cincinnati Reds | Cincinnati Reds signed RHP Matt Pidich. |
| Jun 12, 2018 | Signed | Andrew McDonald | — | Cincinnati Reds | Cincinnati Reds signed RHP Andrew McDonald. |
| Jun 12, 2018 | Signed | Drew Mount | — | Cincinnati Reds | Cincinnati Reds signed OF Drew Mount. |
| Jun 12, 2018 | Signed | Brian Rey | — | Cincinnati Reds | Cincinnati Reds signed 2B Brian Rey. |
| Jun 12, 2018 | Signed | Hunter Oliver | — | Cincinnati Reds | Cincinnati Reds signed C Hunter Oliver. |
| Jun 12, 2018 | Signed | Connor Curlis | — | Cincinnati Reds | Cincinnati Reds signed LHP Connor Curlis. |
| Jun 12, 2018 | Signed | Brandt Stallings | — | Cincinnati Reds | Cincinnati Reds signed 1B Brandt Stallings. |
| Jun 12, 2018 | Signed | Ricky Salinas | — | Cincinnati Reds | Cincinnati Reds signed RHP Ricky Salinas. |
| Jun 12, 2018 | Signed | Jake Wyrick | — | Cincinnati Reds | Cincinnati Reds signed LHP Jacob Wyrick. |
| Jun 12, 2018 | Signed | Justin McGregor | — | Cincinnati Reds | Cincinnati Reds signed RHP Justin McGregor. |
| Jun 12, 2018 | Signed | Robert Boselli | — | Cincinnati Reds | Cincinnati Reds signed C Robert Boselli. |
| Jun 12, 2018 | Signed | Edward Guzman | — | Cincinnati Reds | Cincinnati Reds signed C Edward Guzman. |
| Jun 12, 2018 | Signed as free agent | Tommy Parsons | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Tommy Parsons to a minor league contract. |
| Jun 12, 2018 | Signed | Jake Sims | — | San Diego Padres | San Diego Padres signed RHP Jake Sims. |
| Jun 12, 2018 | Signed | Jordan Groshans | — | Toronto Blue Jays | Toronto Blue Jays signed SS Jordan Groshans. |
| Jun 12, 2018 | Signed | Adam Kloffenstein | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Adam Kloffenstein. |
| Jun 12, 2018 | Signed | Sean Wymer | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Sean Wymer. |
| Jun 12, 2018 | Signed | Chris Bec | — | Toronto Blue Jays | Toronto Blue Jays signed C Christopher Bec. |
| Jun 12, 2018 | Signed | Addison Barger | — | Toronto Blue Jays | Toronto Blue Jays signed SS Addison Barger. |
| Jun 12, 2018 | Signed | Nick Podkul | — | Toronto Blue Jays | Toronto Blue Jays signed 2B Nick Podkul. |
| Jun 12, 2018 | Signed | Joey Murray | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Joey Murray. |
| Jun 12, 2018 | Signed | Jake Brodt | — | Toronto Blue Jays | Toronto Blue Jays signed 1B Jake Brodt. |
| Jun 12, 2018 | Signed | Cal Stevenson | — | Toronto Blue Jays | Toronto Blue Jays signed CF Cal Stevenson. |
| Jun 12, 2018 | Signed | Hunter Steinmetz | — | Toronto Blue Jays | Toronto Blue Jays signed CF Hunter Steinmetz. |
| Jun 12, 2018 | Signed | Nick Allgeyer | — | Toronto Blue Jays | Toronto Blue Jays signed LHP NIck Allgeyer. |
| Jun 12, 2018 | Signed | Brad Wilson | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Brad Wilson. |
| Jun 12, 2018 | Signed | John Aiello | — | Toronto Blue Jays | Toronto Blue Jays signed 3B John Aiello. |
| Jun 12, 2018 | Signed | Troy Watson | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Troy Watson. |
| Jun 12, 2018 | Signed | Adrian Ramos | — | Toronto Blue Jays | Toronto Blue Jays signed CF Adrian Ramos. |
| Jun 12, 2018 | Signed | Vinny Capra | — | Toronto Blue Jays | Toronto Blue Jays signed SS Vinny Capra. |
| Jun 12, 2018 | Signed | Troy Squires | — | Toronto Blue Jays | Toronto Blue Jays signed C Troy Squires. |
| Jun 12, 2018 | Signed | Gage Burland | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Gage Burland. |
| Jun 12, 2018 | Signed | Mike Pascoe | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Mike Pascoe. |
| Jun 12, 2018 | Signed | Will McAffer | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Will McAffer. |
| Jun 12, 2018 | Signed | Cre Finfrock | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Cre Finfrock. |
| Jun 12, 2018 | Signed | Cobi Johnson | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Cobi Johnson. |
| Jun 12, 2018 | Signed | Joey Pulido | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Joey Pulido. |
| Jun 12, 2018 | Signed | Bren Spillane | — | Cincinnati Reds | Cincinnati Reds signed OF Brenden Spillane. |
| Jun 12, 2018 | Signed | A.J. Moore | — | Cincinnati Reds | Cincinnati Reds signed RHP A.J. Moore. |
| Jun 12, 2018 | Signed | Alberto Gonzalez | — | Cincinnati Reds | Cincinnati Reds signed RHP Alberto Gonzalez. |
| Jun 12, 2018 | Signed | Johnnie Schneider | — | Cincinnati Reds | Cincinnati Reds signed RHP John Schneider. |
| Jun 12, 2018 | Signed | Francisco Ruiz | — | Toronto Blue Jays | Toronto Blue Jays signed C Francisco Ruiz. |
| Jun 12, 2018 | Signed | Matthew Liberatore | — | Tampa Bay Rays | Tampa Bay Rays signed LHP Matthew Liberatore. |
| Jun 12, 2018 | Trade | Eric Filia | Seattle Mariners | Boston Red Sox | Seattle Mariners traded RF Eric Filia to Boston Red Sox. |
| Jun 12, 2018 | Signed | Cole Winn | — | Texas Rangers | Texas Rangers signed RHP Cole Winn. |
| Jun 12, 2018 | Signed | Owen White | — | Texas Rangers | Texas Rangers signed RHP Owen White. |
| Jun 12, 2018 | Signed | Jonathan Ornelas | — | Texas Rangers | Texas Rangers signed SS Jonathan Ornelas. |
| Jun 12, 2018 | Signed | Mason Englert | — | Texas Rangers | Texas Rangers signed RHP Mason Englert. |
| Jun 12, 2018 | Signed | Jayce Easley | — | Texas Rangers | Texas Rangers signed SS Jayce Easley. |
| Jun 12, 2018 | Released | Jairo Díaz | — | Colorado Rockies | Colorado Rockies released RHP Jairo Diaz. |
| Jun 12, 2018 | Signed | Mike LoPresti | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Michael Lopresti. |
| Jun 12, 2018 | Signed | Cam Alldred | — | Pittsburgh Pirates | Pittsburgh Pirates signed LHP Cam Alldred. |
| Jun 12, 2018 | Signed | Luke Mangieri | — | Pittsburgh Pirates | Pittsburgh Pirates signed OF Luke Mangieri. |
| Jun 12, 2018 | Signed | Jake McCarthy | — | Arizona Diamondbacks | Arizona Diamondbacks signed OF Jake McCarthy. |
| Jun 12, 2018 | Signed | Alek Thomas | — | Arizona Diamondbacks | Arizona Diamondbacks signed OF Alek Thomas. |
| Jun 12, 2018 | Signed | Josh Stowers | — | Seattle Mariners | Seattle Mariners signed OF Josh Stowers. |
| Jun 12, 2018 | Signed | Michael Plassmeyer | — | Seattle Mariners | Seattle Mariners signed LHP Michael Plassmeyer. |
| Jun 12, 2018 | Signed | Nolan Hoffman | — | Seattle Mariners | Seattle Mariners signed RHP Nolan Hoffman. |
| Jun 12, 2018 | Signed | Joey O'Brien | — | Seattle Mariners | Seattle Mariners signed RHP Joey O'Brien. |
| Jun 12, 2018 | Signed | Jake Anchia | — | Seattle Mariners | Seattle Mariners signed C Jake Anchia. |
| Jun 12, 2018 | Signed | Joey Gerber | — | Seattle Mariners | Seattle Mariners signed RHP Joey Gerber. |
| Jun 12, 2018 | Signed | Matt Sanders | — | Seattle Mariners | Seattle Mariners signed SS Matt Sanders. |
| Jun 12, 2018 | Signed | Unnamed | — | Seattle Mariners | Seattle Mariners signed RHP Damon Casetta-Stubbs. |
| Jun 12, 2018 | Signed | Ryne Ogren | — | Seattle Mariners | Seattle Mariners signed 2B Ryne Ogren. |
| Jun 12, 2018 | Signed | Charlie McConnell | — | Seattle Mariners | Seattle Mariners signed OF Charlie McConnell. |
| Jun 12, 2018 | Signed | Tyler Suellentrop | — | Seattle Mariners | Seattle Mariners signed RHP Tyler Suellentrop. |
| Jun 12, 2018 | Signed | Matt Willrodt | — | Seattle Mariners | Seattle Mariners signed RHP Matthew Willrodt. |
| Jun 12, 2018 | Signed | Holden Laws | — | Seattle Mariners | Seattle Mariners signed LHP Holden Laws. |
| Jun 12, 2018 | Signed | Cesar Trejo | — | Seattle Mariners | Seattle Mariners signed SS Cesar Trejo. |
| Jun 12, 2018 | Signed | J.T. Salter | — | Seattle Mariners | Seattle Mariners signed RHP J.T. Salter. |
| Jun 12, 2018 | Signed | Nick Rodriguez | — | Seattle Mariners | Seattle Mariners signed SS Nicholas Rodriguez. |
| Jun 12, 2018 | Signed | Connor Kopach | — | Seattle Mariners | Seattle Mariners signed 2B Connor Kopach. |
| Jun 12, 2018 | Signed | Cal Hernandez | — | Seattle Mariners | Seattle Mariners signed 3B Cal Hernandez. |
| Jun 12, 2018 | Signed | Cash Gladfelter | — | Seattle Mariners | Seattle Mariners signed 2B Cash Gladfelter. |
| Jun 12, 2018 | Signed | Bobby Honeyman | — | Seattle Mariners | Seattle Mariners signed SS Bobby Honeyman. |
| Jun 12, 2018 | Signed | Cody Staab | — | Seattle Mariners | Seattle Mariners signed OF Cody Staab. |
| Jun 12, 2018 | Signed | Rigo Beltran | — | Seattle Mariners | Seattle Mariners signed LHP Rigo Beltran. |
| Jun 12, 2018 | Signed | Zach Scott | — | Seattle Mariners | Seattle Mariners signed 2B Zach Scott. |
| Jun 12, 2018 | Signed | Penn Murfee | — | Seattle Mariners | Seattle Mariners signed RHP Penn Murfee. |
| Jun 12, 2018 | Signed | Nick Wegmann | — | Seattle Mariners | Seattle Mariners signed LHP Nick Wegmann. |
| Jun 12, 2018 | Signed as free agent | Michael Fuchs | — | Los Angeles Angels | Los Angeles Angels signed free agent SS Michael Fuchs to a minor league contract. |
| Jun 12, 2018 | Signed as free agent | Matt Eagle | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Matt Eagle to a minor league contract. |
| Jun 12, 2018 | Signed | Edinson Diaz | — | New York Mets | New York Mets signed RHP Edinson Diaz. |
| Jun 12, 2018 | Signed as free agent | Jordan Scott | — | San Francisco Giants | San Francisco Giants signed free agent RHP Jordan Scott to a minor league contract. |
| Jun 12, 2018 | Signed as free agent | Rion Murrah | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Rion Murrah to a minor league contract. |
| Jun 12, 2018 | Signed as free agent | Walter Pereira | — | New York Mets | New York Mets signed free agent SS Walter Pereira to a minor league contract. |
| Jun 12, 2018 | Signed as free agent | Chad Martin | — | Miami Marlins | Miami Marlins signed free agent RHP Chad Martin to a minor league contract. |
| Jun 12, 2018 | Signed as free agent | Mitchell McIntyre | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Mitchell McIntyre to a minor league contract. |
| Jun 12, 2018 | Signed as free agent | Mack Meyer | — | San Francisco Giants | San Francisco Giants signed free agent RHP Mack Meyer to a minor league contract. |
| Jun 12, 2018 | Signed as free agent | Tyler Flores | — | San Francisco Giants | San Francisco Giants signed free agent OF Tyler Flores to a minor league contract. |
| Jun 12, 2018 | Signed as free agent | Noah Zavolas | — | Seattle Mariners | Seattle Mariners signed free agent RHP Noah Zavolas to a minor league contract. |
| Jun 12, 2018 | Signed | Gage Hughes | — | Kansas City Royals | Kansas City Royals signed SS Gage Hughes. |
| Jun 12, 2018 | Signed | Joe Ryan | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Joe Ryan. |
| Jun 12, 2018 | Signed | Grant Witherspoon | — | Tampa Bay Rays | Tampa Bay Rays signed OF Grant Witherspoon. |
| Jun 12, 2018 | Signed | Zach McLeod | — | Baltimore Orioles | Baltimore Orioles signed SS Zachary McLeod. |
| Jun 12, 2018 | Signed | Aldrich De Jongh | — | Los Angeles Dodgers | Los Angeles Dodgers signed OF Aldrich De Jongh. |
| Jun 12, 2018 | Signed | Hunter Speer | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Hunter Speer. |
| Jun 12, 2018 | Signed | Connor Mitchell | — | Los Angeles Dodgers | Los Angeles Dodgers signed LHP Connor Mitchell. |
| Jun 12, 2018 | Signed | Justin Hagenman | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Justin Hagenman. |
| Jun 12, 2018 | Signed | Reza Aleaziz | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Reza Aleaziz. |
| Jun 12, 2018 | Signed | Blake Whitney | — | Chicago Cubs | Chicago Cubs signed RHP Blake Whitney. |
| Jun 12, 2018 | Signed | Noah Zavolas | — | Seattle Mariners | Seattle Mariners signed RHP Noah Zavolas. |
| Jun 12, 2018 | Signed | Clayton Daniel | — | Chicago Cubs | Chicago Cubs signed 2B Clayton Daniel. |
| Jun 12, 2018 | Signed | Caleb Sampen | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Caleb Sampen. |
| Jun 12, 2018 | Signed | Tre Todd | — | Los Angeles Dodgers | Los Angeles Dodgers signed C Tre Todd. |
| Jun 12, 2018 | Signed | Andrew Shaps | — | Los Angeles Dodgers | Los Angeles Dodgers signed OF Andrew Shaps. |
| Jun 12, 2018 | Signed as free agent | Rafael Bautista | — | Washington Nationals | Washington Nationals signed free agent CF Rafael Bautista to a minor league contract. |
| Jun 11, 2018 | Released | Adrián González | — | New York Mets | New York Mets released 1B Adrian Gonzalez. |
| Jun 11, 2018 | Signed as free agent | Yhonson Rojas | — | San Francisco Giants | San Francisco Giants signed free agent LHP Yhonson Rojas to a minor league contract. |
| Jun 11, 2018 | Signed | Brad Case | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Brad Case. |
| Jun 11, 2018 | Signed | Nate Soria | — | Tampa Bay Rays | Tampa Bay Rays signed C Nate Soria. |
| Jun 11, 2018 | Signed as free agent | Garrett Giovannelli | — | Tampa Bay Rays | Tampa Bay Rays signed free agent 2B Garrett Giovannelli to a minor league contract. |
| Jun 11, 2018 | Signed | Justin Montgomery | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Justin Montgomery. |
| Jun 11, 2018 | Signed | Jake Palomaki | — | Tampa Bay Rays | Tampa Bay Rays signed 2B Jake Palomaki. |
| Jun 11, 2018 | Signed | Jordan Qsar | — | Tampa Bay Rays | Tampa Bay Rays signed OF Jordan Qsar. |
| Jun 11, 2018 | Signed as free agent | Joselin Vallejo | — | Atlanta Braves | Atlanta Braves signed free agent RHP Joselin Vallejo to a minor league contract. |
| Jun 11, 2018 | Signed as free agent | Carlos De La Cruz | — | Atlanta Braves | Atlanta Braves signed free agent RHP Carlos De La Cruz to a minor league contract. |
| Jun 11, 2018 | Signed as free agent | Ronaldo Alesandro | — | Atlanta Braves | Atlanta Braves signed free agent RHP Ronaldo Alesandro to a minor league contract. |
| Jun 11, 2018 | Signed | Reid Anderson | — | New York Yankees | New York Yankees signed RHP Reid Anderson. |
| Jun 11, 2018 | Signed as free agent | Roddery Muñoz | — | Atlanta Braves | Atlanta Braves signed free agent RHP Roddery Munoz to a minor league contract. |
| Jun 10, 2018 | Signed as free agent | Trevor Brown | — | San Francisco Giants | San Francisco Giants signed free agent C Trevor Brown to a minor league contract. |
| Jun 10, 2018 | Signed | Jameson Hannah | — | Athletics | Oakland Athletics signed OF Jameson Hannah. |
| Jun 10, 2018 | Signed | Hogan Harris | — | Athletics | Oakland Athletics signed LHP Hogan Harris. |
| Jun 10, 2018 | Signed | Alfonso Rivas III | — | Athletics | Oakland Athletics signed 1B Alfonso Rivas. |
| Jun 10, 2018 | Signed | Brady Feigl | — | Athletics | Oakland Athletics signed RHP Brady Feigl. |
| Jun 10, 2018 | Signed | Lawrence Butler | — | Athletics | Oakland Athletics signed 3B Lawrence Butler. |
| Jun 10, 2018 | Signed | Charlie Cerny | — | Athletics | Oakland Athletics signed RHP Charlie Cerny. |
| Jun 10, 2018 | Signed | Chase Cohen | — | Athletics | Oakland Athletics signed RHP Chase Cohen. |
| Jun 10, 2018 | Signed | Clark Cota | — | Athletics | Oakland Athletics signed RHP Clark Cota. |
| Jun 10, 2018 | Signed | Noah Vaughan | — | Athletics | Oakland Athletics signed OF Noah Vaughan. |
| Jun 10, 2018 | Signed | Dallas Woolfolk | — | Athletics | Oakland Athletics signed RHP Dallas Woolfolk. |
| Jun 10, 2018 | Signed | Bryce Nightengale | — | Athletics | Oakland Athletics signed RHP Bryce Nightengale. |
| Jun 10, 2018 | Signed | Cobie Fletcher-Vance | — | Athletics | Oakland Athletics signed SS Cobie Vance. |
| Jun 10, 2018 | Signed | Matt Cross | — | Athletics | Oakland Athletics signed C Matt Cross. |
| Jun 10, 2018 | Signed | Max Schuemann | — | Athletics | Oakland Athletics signed 2B Max Schuemann. |
| Jun 10, 2018 | Signed | Daniel Martinez | — | Athletics | Oakland Athletics signed RHP Daniel Martinez. |
| Jun 10, 2018 | Signed | Aiden McIntyre | — | Athletics | Oakland Athletics signed RHP Aiden McIntyre. |
| Jun 10, 2018 | Signed | Leudeny Pineda | — | Athletics | Oakland Athletics signed RHP Leudeny Pineda. |
| Jun 10, 2018 | Signed | Reid Birlingmair | — | Athletics | Oakland Athletics signed RHP Reid Birlingmair. |
| Jun 10, 2018 | Signed | Austin Briggs | — | Athletics | Oakland Athletics signed LHP Austin Briggs. |
| Jun 10, 2018 | Signed | Gio Dingcong | — | Athletics | Oakland Athletics signed 1B Gio Dingcong. |
| Jun 10, 2018 | Signed | Alex Pantuso | — | Athletics | Oakland Athletics signed RHP Alexander Pantuso. |
| Jun 10, 2018 | Signed | John Jones | — | Athletics | Oakland Athletics signed C John Jones. |
| Jun 10, 2018 | Signed | Joseph Pena | — | Athletics | Oakland Athletics signed C Joseph Pena. |
| Jun 10, 2018 | Signed | Nick Ward | — | Athletics | Oakland Athletics signed 2B Nick Ward. |
| Jun 10, 2018 | Signed | Austin Piscotty | — | Athletics | Oakland Athletics signed OF Austin Piscotty. |
| Jun 10, 2018 | Trade | Ji Man Choi | Milwaukee Brewers | Tampa Bay Rays | Tampa Bay Rays traded cash and 1B Brad Miller to Milwaukee Brewers for 1B Ji-Man Choi. |
| Jun 10, 2018 | Signed | Daniel Lynch IV | — | Kansas City Royals | Kansas City Royals signed LHP Daniel Lynch. |
| Jun 10, 2018 | Signed | Jonathan Bowlan | — | Kansas City Royals | Kansas City Royals signed RHP Jonathan Bowlan. |
| Jun 10, 2018 | Signed | Kyle Isbel | — | Kansas City Royals | Kansas City Royals signed OF Kyle Isbel. |
| Jun 10, 2018 | Signed | Austin Cox | — | Kansas City Royals | Kansas City Royals signed LHP Austin Cox. |
| Jun 10, 2018 | Signed | Tyler Gray | — | Kansas City Royals | Kansas City Royals signed RHP Tyler Gray. |
| Jun 10, 2018 | Signed | Zach Haake | — | Kansas City Royals | Kansas City Royals signed RHP Zach Haake. |
| Jun 10, 2018 | Signed | Jackson Lueck | — | Kansas City Royals | Kansas City Royals signed LF Jackson Lueck. |
| Jun 10, 2018 | Signed | Austin Lambright | — | Kansas City Royals | Kansas City Royals signed LHP Austin Lambright. |
| Jun 10, 2018 | Signed | Michael Emodi | — | Kansas City Royals | Kansas City Royals signed C Michael Emodi. |
| Jun 10, 2018 | Signed | Christian Cosby | — | Kansas City Royals | Kansas City Royals signed RHP Christian Cosby. |
| Jun 10, 2018 | Signed | Kyle Hinton | — | Kansas City Royals | Kansas City Royals signed RHP Kyle Hinton. |
| Jun 10, 2018 | Signed | Noah Bryant | — | Kansas City Royals | Kansas City Royals signed RHP Noah Bryant. |
| Jun 10, 2018 | Signed | Nate Eaton | — | Kansas City Royals | Kansas City Royals signed C Nathan Eaton. |
| Jun 10, 2018 | Signed | Bryce Hensley | — | Kansas City Royals | Kansas City Royals signed LHP Bryce Hensley. |
| Jun 10, 2018 | Signed | Josh Dye | — | Kansas City Royals | Kansas City Royals signed LHP Josh Dye. |
| Jun 10, 2018 | Signed | Hunter Strong | — | Kansas City Royals | Kansas City Royals signed OF Hunter Strong. |
| Jun 10, 2018 | Signed | Daniel James | — | Kansas City Royals | Kansas City Royals signed RHP Daniel James. |
| Jun 10, 2018 | Signed | Derrick Adams | — | Kansas City Royals | Kansas City Royals signed LHP Derrick Adams. |
| Jun 10, 2018 | Signed | Andrés Núñez | — | Kansas City Royals | Kansas City Royals signed RHP Andres Nunez. |
| Jun 10, 2018 | Signed | Rhett Aplin | — | Kansas City Royals | Kansas City Royals signed OF Rhett Aplin. |
| Jun 10, 2018 | Signed | William Hancock | — | Kansas City Royals | Kansas City Royals signed C William Hancock. |
| Jun 10, 2018 | Signed | Kyle Kasser | — | Kansas City Royals | Kansas City Royals signed SS Kyle Kasser. |
| Jun 10, 2018 | Signed | Brhet Bewley | — | Kansas City Royals | Kansas City Royals signed IF Brhet Bewley. |
| Jun 10, 2018 | Signed | Ted Cillis | — | Kansas City Royals | Kansas City Royals signed LHP Ted Cillis. |
| Jun 10, 2018 | Signed as free agent | Ian Krol | — | New York Mets | New York Mets signed free agent LHP Ian Krol to a minor league contract. |
| Jun 10, 2018 | Signed as free agent | Andrew Ryan | — | New York Mets | New York Mets signed free agent RHP Andrew Ryan to a minor league contract. |
| Jun 10, 2018 | Signed | Levi Kelly | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Levi Kelly. |
| Jun 10, 2018 | Signed | Justin Lewis | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Justin Lewis. |
| Jun 10, 2018 | Signed | Blaze Alexander | — | Arizona Diamondbacks | Arizona Diamondbacks signed SS Blaze Alexander. |
| Jun 10, 2018 | Signed | Joe Gillette | — | Arizona Diamondbacks | Arizona Diamondbacks signed 3B Joe Gillette. |
| Jun 10, 2018 | Signed as free agent | David Sheaffer | — | Seattle Mariners | Seattle Mariners signed free agent C David Sheaffer to a minor league contract. |
| Jun 10, 2018 | Signed | Allan Winans | — | New York Mets | New York Mets signed RHP Allan Winans. |
| Jun 10, 2018 | Signed | Jackson Goddard | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Jackson Goddard. |
| Jun 10, 2018 | Signed | Ryan Weiss | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Ryan Weiss. |
| Jun 9, 2018 | Released | Rafael Bautista | — | Washington Nationals | Washington Nationals released CF Rafael Bautista. |
| Jun 9, 2018 | Signed as free agent | Wyatt Burns | — | Chicago White Sox | Chicago White Sox signed free agent RHP Wyatt Burns to a minor league contract. |
| Jun 9, 2018 | Signed as free agent | Wellington Nunez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Wellington Nunez to a minor league contract. |
| Jun 9, 2018 | Signed | Chris Gau | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Christopher Gau. |
| Jun 9, 2018 | Signed | Heath Renz | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Heath Renz. |
| Jun 9, 2018 | Signed | Stephen Yancey | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Stephen Yancey. |
| Jun 9, 2018 | Signed as free agent | Deybi Arias | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Deybi Arias to a minor league contract. |
| Jun 9, 2018 | Signed as free agent | Starling Javier | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Starling Javier to a minor league contract. |
| Jun 9, 2018 | Signed | Christian Tripp | — | New York Mets | New York Mets signed RHP Christian Tripp. |
| Jun 8, 2018 | Signed as free agent | Ronald Parra | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Ronald Parra to a minor league contract. |
| Jun 8, 2018 | Trade | Jon Berti | Cleveland Guardians | Toronto Blue Jays | Cleveland Indians traded 2B Jon Berti to Toronto Blue Jays. |
| Jun 8, 2018 | Signed as free agent | Grégor Blanco | — | San Francisco Giants | San Francisco Giants signed free agent CF Gregor Blanco to a minor league contract. |
| Jun 8, 2018 | Signed as free agent | Carlos Penalver | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Carlos Penalver to a minor league contract. |
| Jun 8, 2018 | Signed | Daniel Wasinger | — | Arizona Diamondbacks | Arizona Diamondbacks signed C Daniel Wasinger. |
| Jun 8, 2018 | Signed | Marshawn Taylor | — | Arizona Diamondbacks | Arizona Diamondbacks signed SS Marshawn Taylor. |
| Jun 8, 2018 | Signed | Michael Costanzo | — | Tampa Bay Rays | Tampa Bay Rays signed LHP Michael Costanzo. |
| Jun 8, 2018 | Signed as free agent | Nishell Gutierrez | — | Los Angeles Angels | Los Angeles Angels signed free agent 2B Nishell Gutierrez to a minor league contract. |
| Jun 8, 2018 | Signed as free agent | Maikel Pineda | — | Los Angeles Angels | Los Angeles Angels signed free agent 3B Maikel Pineda to a minor league contract. |
| Jun 8, 2018 | Signed as free agent | Enzo Perez | — | Chicago Cubs | Chicago Cubs signed free agent RHP Enzo Perez to a minor league contract. |
| Jun 8, 2018 | Signed as free agent | Donato Auguste | — | Chicago Cubs | Chicago Cubs signed free agent RHP Donato Auguste to a minor league contract. |
| Jun 8, 2018 | Signed as free agent | Juan Vasquez | — | Chicago Cubs | Chicago Cubs signed free agent C Juan Vasquez to a minor league contract. |
| Jun 8, 2018 | Signed as free agent | Drew Beyer | — | Detroit Tigers | Detroit Tigers signed free agent RHP Drew Beyer to a minor league contract. |
| Jun 8, 2018 | Signed as free agent | Luis Nin | — | Chicago White Sox | Chicago White Sox signed free agent RHP Luis Nin to a minor league contract. |
| Jun 8, 2018 | Signed | Alex King | — | Arizona Diamondbacks | Arizona Diamondbacks signed SS Alex King. |
| Jun 8, 2018 | Signed as free agent | Mitchell Edwards | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Mitchell Warke-Edwards to a minor league contract. |
| Jun 8, 2018 | Signed as free agent | Anderson Parra | — | Chicago Cubs | Chicago Cubs signed free agent LHP Anderson Parra to a minor league contract. |
| Jun 8, 2018 | Signed as free agent | Yoan Antonac | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Yoan Antonac to a minor league contract. |
| Jun 7, 2018 | Signed as free agent | Ruben De Leon | — | Kansas City Royals | Kansas City Royals signed free agent SS Ruben De Leon to a minor league contract. |
| Jun 7, 2018 | Signed as free agent | Antonio Pujols | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Antonio Pujols to a minor league contract. |
| Jun 7, 2018 | Signed as free agent | Jose Brizuela | — | New York Mets | New York Mets signed free agent 3B Jose Brizuela to a minor league contract. |
| Jun 7, 2018 | Signed as free agent | Ryan Thurston | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Patrick Thurston to a minor league contract. |
| Jun 7, 2018 | Signed | Drevian Williams-Nelson | — | Los Angeles Angels | Los Angeles Angels signed CF Drevian Williams-Nelson. |
| Jun 6, 2018 | Released | Marc Rzepczynski | — | Seattle Mariners | Seattle Mariners released LHP Marc Rzepczynski. |
| Jun 6, 2018 | Signed as free agent | Jose Martinez | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Jose Martinez to a minor league contract. |
| Jun 6, 2018 | Signed as free agent | Edwin Jackson | — | Athletics | Oakland Athletics signed free agent RHP Edwin Jackson to a minor league contract. |
| Jun 6, 2018 | Trade | Gabe Speier | Arizona Diamondbacks | Kansas City Royals | Kansas City Royals traded LF Jon Jay to Arizona Diamondbacks for Elvis Luciano and Gabe Speier. |
| Jun 6, 2018 | Signed as free agent | Jacob Turner | — | Detroit Tigers | Detroit Tigers signed free agent RHP Jacob Turner to a minor league contract. |
| Jun 6, 2018 | Signed as free agent | Erick Heredia | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Erick Heredia to a minor league contract. |
| Jun 6, 2018 | Signed as free agent | Gregoris Chalas | — | Colorado Rockies | Colorado Rockies signed free agent RHP Gregoris Chalas to a minor league contract. |
| Jun 5, 2018 | Signed as free agent | Gerson Moreno | — | Detroit Tigers | Detroit Tigers signed free agent RHP Gerson Moreno to a minor league contract. |
| Jun 5, 2018 | Released | Kevin Shackelford | — | Cincinnati Reds | Cincinnati Reds released RHP Kevin Shackelford. |
| Jun 5, 2018 | Signed as free agent | Williams Pérez | — | Seattle Mariners | Seattle Mariners signed free agent RHP Williams Perez to a minor league contract. |
| Jun 5, 2018 | Signed as free agent | Daniel Schlereth | — | Seattle Mariners | Seattle Mariners signed free agent LHP Daniel Schlereth to a minor league contract. |
| Jun 5, 2018 | Released | Tim Lincecum | — | Texas Rangers | Texas Rangers released RHP Tim Lincecum. |
| Jun 5, 2018 | Signed as free agent | Cameron Rupp | — | Minnesota Twins | Minnesota Twins signed free agent C Cameron Rupp to a minor league contract. |
| Jun 5, 2018 | Signed as free agent | Eduardo Perez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Eduardo Perez to a minor league contract. |
| Jun 5, 2018 | Signed as free agent | Cristofer Ogando | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Cristofer Ogando to a minor league contract. |
| Jun 5, 2018 | Signed as free agent | Yaramil Hiraldo | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Yaramil Hiraldo to a minor league contract. |
| Jun 5, 2018 | Signed as free agent | Hunter Cervenka | — | Detroit Tigers | Detroit Tigers signed free agent LHP Hunter Cervenka to a minor league contract. |
| Jun 5, 2018 | Signed as free agent | Efren Aular | — | Chicago Cubs | Chicago Cubs signed free agent C Efren Aular to a minor league contract. |
| Jun 5, 2018 | Signed as free agent | Osvaldo Morel | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Osvaldo Morel to a minor league contract. |
| Jun 5, 2018 | Signed as free agent | Augusto Acevedo | — | Chicago Cubs | Chicago Cubs signed free agent SS Augusto Acevedo to a minor league contract. |
| Jun 5, 2018 | Signed as free agent | Hsin-Chieh Lin | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Hsin-Chieh Lin to a minor league contract. |
| Jun 4, 2018 | Signed as free agent | Jose Cordova | — | Colorado Rockies | Colorado Rockies signed free agent C Jose Cordova to a minor league contract. |
| Jun 4, 2018 | Signed as free agent | Edmar Gonzalez | — | Chicago Cubs | Chicago Cubs signed free agent RHP Edamar Gonzalez to a minor league contract. |
| Jun 4, 2018 | Signed as free agent | Carlos De Avila | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent P Carlos De Avila to a minor league contract. |
| Jun 3, 2018 | Signed as free agent | George Kontos | — | Cleveland Guardians | Cleveland Indians signed free agent RHP George Kontos to a minor league contract. |
| Jun 3, 2018 | Trade | Brad Goldberg | Chicago White Sox | Arizona Diamondbacks | Chicago White Sox traded RHP Brad Goldberg to Arizona Diamondbacks. |
| Jun 3, 2018 | Signed as free agent | Junichi Tazawa | — | Detroit Tigers | Detroit Tigers signed free agent RHP Junichi Tazawa to a minor league contract. |
| Jun 3, 2018 | Signed as free agent | Franklin Hernandez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Franklin Hernandez to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Adenys Bautista | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Adenys Bautista to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Wuardo Fernandez | — | Colorado Rockies | Colorado Rockies signed free agent RHP Wuardo Fernandez to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Juan Loyo | — | New York Mets | New York Mets signed free agent C Juan Loyo to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Fidel Almario | — | New York Mets | New York Mets signed free agent SS Fidel Almario to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Malvin Nunez | — | New York Mets | New York Mets signed free agent SS Malvin Nunez to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Jeffrey Colon | — | New York Mets | New York Mets signed free agent RHP Jeffrey Colon to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Joshua Cornielly | — | New York Mets | New York Mets signed free agent RHP Joshua Cornielly to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Benito Garcia | — | New York Mets | New York Mets signed free agent RHP Benito Garcia to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Cesar Loaiza | — | New York Mets | New York Mets signed free agent LHP Cesar Loaiza to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Ragui Rodriguez | — | New York Mets | New York Mets signed free agent LHP Ragui Rodriguez to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Junior Santos | — | New York Mets | New York Mets signed free agent RHP Junior Santos to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Nixon Silva | — | New York Mets | New York Mets signed free agent LHP Nixon Silva to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Ryan Asencio | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Ryan Asencio to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Christopher Duran | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Christopher Duran to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Giuseppe Peguero | — | Philadelphia Phillies | Philadelphia Phillies signed free agent OF Giuseppe Peguero to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Oliver Pérez | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Oliver Perez. |
| Jun 2, 2018 | Signed as free agent | Adam Lind | — | Boston Red Sox | Boston Red Sox signed free agent 1B Adam Lind to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Danny Reynolds | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Danny Reynolds to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Tyler Higgins | — | Seattle Mariners | Seattle Mariners signed free agent RHP Tyler Higgins to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Ross Detwiler | — | Seattle Mariners | Seattle Mariners signed free agent LHP Ross Detwiler to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Juan Herrera | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Juan Herrera to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Josue Herrera | — | Baltimore Orioles | Baltimore Orioles signed free agent 1B Josue Herrera to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Randi De La Cruz | — | Atlanta Braves | Atlanta Braves signed free agent OF Randi De La Cruz to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Luis Cedeno | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Luis Cedeno to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Oscar Severino | — | Detroit Tigers | Detroit Tigers signed free agent RHP Oscar Severino to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | Steven Pérez | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Steven Perez to a minor league contract. |
| Jun 2, 2018 | Signed as free agent | David Flores | — | Cleveland Guardians | Cleveland Indians signed free agent LHP David Flores to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Enrique Yeguez | — | Detroit Tigers | Detroit Tigers signed free agent RHP Enrique Yeguez to a minor league contract. |
| Jun 1, 2018 | Trade | Peter O'Brien | Los Angeles Dodgers | Miami Marlins | Los Angeles Dodgers traded 1B Peter O'Brien to Miami Marlins for cash. |
| Jun 1, 2018 | Signed as free agent | Edwin Ventura | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Edwin Ventura to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Luis Santana | — | Baltimore Orioles | Baltimore Orioles signed free agent 1B Luis Santana to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Jose Florian | — | Kansas City Royals | Kansas City Royals signed free agent 1B Jose Florian to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Blas Castaño | — | New York Yankees | New York Yankees signed free agent RHP Blas Castano to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Kendy Moya | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Kendy Moya to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Christian Sumoza | — | New York Yankees | New York Yankees signed free agent RHP Cristian Sumoza to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Wilfre Favelo | — | New York Yankees | New York Yankees signed free agent OF Wilfre Favelo to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Juan Ramirez | — | Houston Astros | Houston Astros signed free agent OF Juan Ramirez to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Justin Qiang | — | Boston Red Sox | Boston Red Sox signed free agent C Qiangba Renzeng to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Brandon Chapman | — | Atlanta Braves | Atlanta Braves signed free agent C Brandon Chapman to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Rodney Theophile | — | Washington Nationals | Washington Nationals signed free agent RHP Rodney Theophile to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Christian Navarro | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Christian Navarro to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Scott Sebald | — | Miami Marlins | Miami Marlins signed free agent LHP Scott Sebald to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Tyler Mitzel | — | Miami Marlins | Miami Marlins signed free agent RHP Tyler Mitzel to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Juan Aguilera | — | Detroit Tigers | Detroit Tigers signed free agent RHP Juan Aguilera to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | David Noworyta | — | Detroit Tigers | Detroit Tigers signed free agent C David Noworyta to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Marcos Almonte | — | Atlanta Braves | Atlanta Braves signed free agent 2B Marcos Almonte to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Yeury Gervacio | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Yeury Gervacio to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Erison Medina | — | Boston Red Sox | Boston Red Sox signed free agent RHP Erison Medina to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Jimmy Smith | — | Philadelphia Phillies | Philadelphia Phillies signed free agent OF James Smith to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Marin Cronz | — | Washington Nationals | Washington Nationals signed free agent 2B Marin Cronz to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Steven Kraft | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Steven Kraft to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Alvaro Rubalcaba | — | Los Angeles Angels | Los Angeles Angels signed free agent IF Alvaro Rubalcaba to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Sergio Toribio | — | Minnesota Twins | Minnesota Twins signed free agent C Sergio Toribio to a minor league contract. |
| Jun 1, 2018 | Signed as free agent | Yonaiker Garcia | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Yonaiker Garcia to a minor league contract. |
| May 31, 2018 | Released | Aaron Blair | — | Atlanta Braves | Atlanta Braves released RHP Aaron Blair. |
| May 31, 2018 | Trade | Curt Casali | Tampa Bay Rays | Cincinnati Reds | Tampa Bay Rays traded C Curt Casali to Cincinnati Reds for cash. |
| May 31, 2018 | Signed as free agent | Johendry Vasquez | — | Colorado Rockies | Colorado Rockies signed free agent SS Johendry Vasquez to a minor league contract. |
| May 31, 2018 | Signed as free agent | Pedro Martinez Jr. | — | Detroit Tigers | Detroit Tigers signed free agent SS Pedro Martinez Jr. to a minor league contract. |
| May 31, 2018 | Signed as free agent | Tyler Watson | — | Atlanta Braves | Atlanta Braves signed free agent LHP Tyler Watson to a minor league contract. |
| May 30, 2018 | Released | Gerson Moreno | — | Detroit Tigers | Detroit Tigers released RHP Gerson Moreno. |
| May 30, 2018 | Released | Hanley Ramirez | — | Boston Red Sox | Boston Red Sox released 1B Hanley Ramirez. |
| May 30, 2018 | Signed as free agent | Abrahan Hiraldo | — | Washington Nationals | Washington Nationals signed free agent RHP Abrahan Hiraldo to a minor league contract. |
| May 30, 2018 | Signed as free agent | Edgar Escobar | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Edgar Escobar to a minor league contract. |
| May 29, 2018 | Trade | Myles Jaye | Minnesota Twins | Cleveland Guardians | Minnesota Twins traded RHP Myles Jaye to Cleveland Indians for cash. |
| May 29, 2018 | Signed as free agent | Angel Cuenca | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Angel Cuenca to a minor league contract. |
| May 29, 2018 | Signed as free agent | Eduin Lugo | — | Milwaukee Brewers | Milwaukee Brewers signed free agent C Eduin Lugo to a minor league contract. |
| May 29, 2018 | Signed as free agent | Yoniel Ramirez | — | San Francisco Giants | San Francisco Giants signed free agent RHP Yoniel Ramirez to a minor league contract. |
| May 29, 2018 | Trade | Tommy Bergjans | Philadelphia Phillies | Cincinnati Reds | Philadelphia Phillies traded RHP Tommy Bergjans to Cincinnati Reds. |
| May 29, 2018 | Signed as free agent | Matt Hearn | — | Colorado Rockies | Colorado Rockies signed free agent OF Matt Hearn to a minor league contract. |
| May 28, 2018 | Signed as free agent | Ryan Hanigan | — | San Francisco Giants | San Francisco Giants signed free agent C Ryan Hanigan to a minor league contract. |
| May 28, 2018 | Released | George Kontos | — | Pittsburgh Pirates | Pittsburgh Pirates released RHP George Kontos. |
| May 28, 2018 | Signed as free agent | Jairo Labourt | — | Chicago White Sox | Chicago White Sox signed free agent LHP Jairo Labourt to a minor league contract. |
| May 28, 2018 | Signed as free agent | Luis Cadet | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent P Luis Cadet to a minor league contract. |
| May 28, 2018 | Signed as free agent | Eurys Henriquez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Eurys Henriquez to a minor league contract. |
| May 27, 2018 | Trade | Phil Hughes | Minnesota Twins | San Diego Padres | Minnesota Twins traded RHP Phil Hughes and Future Considerations to San Diego Padres for C Janigson Villalobos. |
| May 27, 2018 | Signed as free agent | Taylor Hill | — | San Francisco Giants | San Francisco Giants signed free agent RHP Taylor Hill to a minor league contract. |
| May 27, 2018 | Released | Kevin Jepsen | — | Texas Rangers | Texas Rangers released RHP Kevin Jepsen. |
| May 26, 2018 | Signed as free agent | Daneurys De La Cruz | — | Detroit Tigers | Detroit Tigers signed free agent C Danuerys De La Cruz to a minor league contract. |
| May 26, 2018 | Signed as free agent | Breiner Licona | — | Boston Red Sox | Boston Red Sox signed free agent C Breiner Licona to a minor league contract. |
| May 26, 2018 | Signed as free agent | Jose Ramirez | — | Boston Red Sox | Boston Red Sox signed free agent RHP Jose Ramirez to a minor league contract. |
| May 25, 2018 | Signed as free agent | Wilkin Castillo | — | New York Yankees | New York Yankees signed free agent C Wilkin Castillo to a minor league contract. |
| May 25, 2018 | Trade | Erik Kratz | New York Yankees | Milwaukee Brewers | New York Yankees traded C Erik Kratz to Milwaukee Brewers for Future Considerations. |
| May 25, 2018 | Signed as free agent | Nelson Molina | — | Colorado Rockies | Colorado Rockies signed free agent 3B Nelson Molina to a minor league contract. |
| May 25, 2018 | Trade | Alex Colomé | Tampa Bay Rays | Seattle Mariners | Tampa Bay Rays traded RHP Alex Colome, LF Denard Span and cash to Seattle Mariners for RHP Andrew Moore and RHP Tommy Romero. |
| May 25, 2018 | Trade | Wilmer Font | Athletics | Tampa Bay Rays | Oakland Athletics traded RHP Wilmer Font to Tampa Bay Rays for RHP Peter Bayer. |
| May 25, 2018 | Signed as free agent | Mitch Talbot | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Mitch Talbot to a minor league contract. |
| May 25, 2018 | Signed as free agent | Daniel Angulo | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Daniel Angulo to a minor league contract. |
| May 25, 2018 | Signed as free agent | Yosber Sanchez | — | Texas Rangers | Texas Rangers signed free agent RHP Yosber Sanchez to a minor league contract. |
| May 24, 2018 | Signed as free agent | Daniel Camarena | — | San Francisco Giants | San Francisco Giants signed free agent LHP Daniel Camarena to a minor league contract. |
| May 24, 2018 | Signed as free agent | Alejandro Chacin | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Alejandro Chacin to a minor league contract. |
| May 24, 2018 | Signed as free agent | Henry Owens | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Henry Owens to a minor league contract. |
| May 23, 2018 | Signed as free agent | Alex Presley | — | Chicago White Sox | Chicago White Sox signed free agent LF Alex Presley to a minor league contract. |
| May 23, 2018 | Signed as free agent | Josh Edgin | — | Washington Nationals | Washington Nationals signed free agent LHP Josh Edgin to a minor league contract. |
| May 23, 2018 | Signed as free agent | Adam Brett Walker | — | Washington Nationals | Washington Nationals signed free agent LF Adam Brett Walker to a minor league contract. |
| May 23, 2018 | Signed as free agent | Luis Marté | — | Atlanta Braves | Atlanta Braves signed free agent SS Luis Marte to a minor league contract. |
| May 23, 2018 | Signed as free agent | Aaron Laffey | — | New York Mets | New York Mets signed free agent LHP Aaron Laffey to a minor league contract. |
| May 23, 2018 | Signed as free agent | Jonathan Almonte | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jonathan Almonte to a minor league contract. |
| May 23, 2018 | Signed as free agent | Samil Polanco | — | Chicago White Sox | Chicago White Sox signed free agent SS Samil Polanco to a minor league contract. |
| May 23, 2018 | Signed as free agent | Yoelvin Silven | — | Chicago White Sox | Chicago White Sox signed free agent RHP Yoelvin Silven to a minor league contract. |
| May 22, 2018 | Signed as free agent | Jaff Decker | — | Washington Nationals | Washington Nationals signed free agent OF Jaff Decker to a minor league contract. |
| May 22, 2018 | Signed as free agent | José Bautista | — | New York Mets | New York Mets signed free agent RF Jose Bautista. |
| May 22, 2018 | Released | Ryan Schimpf | — | Los Angeles Angels | Los Angeles Angels released 3B Ryan Schimpf. |
| May 22, 2018 | Trade | Chris Carter | Los Angeles Angels | Minnesota Twins | Los Angeles Angels traded 1B Chris Carter to Minnesota Twins for cash. |
| May 22, 2018 | Signed as free agent | Victor Azor | — | Colorado Rockies | Colorado Rockies signed free agent RHP Victor Azor to a minor league contract. |
| May 22, 2018 | Signed as free agent | Luis Curvelo | — | Seattle Mariners | Seattle Mariners signed free agent RHP Luis Curvelo to a minor league contract. |
| May 22, 2018 | Signed as free agent | Hansel Viola | — | Boston Red Sox | Boston Red Sox signed free agent RHP Hansel Viola to a minor league contract. |
| May 22, 2018 | Trade | Hector Leon | Houston Astros | Baltimore Orioles | Houston Astros traded SS Hector Leon to Baltimore Orioles. |
| May 22, 2018 | Signed as free agent | Dalton Geekie | — | Chicago Cubs | Chicago Cubs signed free agent RHP Dalton Geekie to a minor league contract. |
| May 21, 2018 | Signed as free agent | Michael Saunders | — | Chicago White Sox | Chicago White Sox signed free agent OF Michael Saunders to a minor league contract. |
| May 21, 2018 | Released | Junichi Tazawa | — | Miami Marlins | Miami Marlins released RHP Junichi Tazawa. |
| May 21, 2018 | Signed as free agent | Kevin Chapman | — | Detroit Tigers | Detroit Tigers signed free agent LHP Kevin Chapman to a minor league contract. |
| May 21, 2018 | Signed as free agent | Dionys Vallejo | — | New York Yankees | New York Yankees signed free agent SS Dionys Vallejo to a minor league contract. |
| May 21, 2018 | Signed as free agent | Randy Vásquez | — | New York Yankees | New York Yankees signed free agent RHP Randy Vasquez to a minor league contract. |
| May 20, 2018 | Released | José Bautista | — | Atlanta Braves | Atlanta Braves released 3B Jose Bautista. |
| May 19, 2018 | Signed as free agent | Braxton Lorenzini | — | Colorado Rockies | Colorado Rockies signed free agent RHP Braxton Lorenzini to a minor league contract. |
| May 19, 2018 | Signed as free agent | David Hale | — | New York Yankees | New York Yankees signed free agent RHP David Hale to a minor league contract. |
| May 19, 2018 | Signed as free agent | Michael Mariot | — | Kansas City Royals | Kansas City Royals signed free agent RHP Michael Mariot to a minor league contract. |
| May 19, 2018 | Signed as free agent | Joey Wong | — | New York Mets | New York Mets signed free agent SS Joey Wong to a minor league contract. |
| May 19, 2018 | Signed as free agent | Omar Matos | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 2B Omar Matos to a minor league contract. |
| May 19, 2018 | Signed as free agent | Eddison Polonia | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Eddison Polonia to a minor league contract. |
| May 19, 2018 | Signed as free agent | Eduar Ramirez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 3B Eduar Ramirez to a minor league contract. |
| May 19, 2018 | Signed as free agent | Wander Romero | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Wander Romero to a minor league contract. |
| May 18, 2018 | Released | Henry Owens | — | Los Angeles Dodgers | Los Angeles Dodgers released LHP Henry Owens. |
| May 18, 2018 | Signed as free agent | Christian Colón | — | New York Mets | New York Mets signed free agent 2B Christian Colon to a minor league contract. |
| May 18, 2018 | Signed as free agent | Cliff Pennington | — | Texas Rangers | Texas Rangers signed free agent 2B Cliff Pennington to a minor league contract. |
| May 18, 2018 | Signed as free agent | Alis Atagua | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Alis Atagua to a minor league contract. |
| May 18, 2018 | Signed as free agent | Yorlenis Noa | — | Athletics | Oakland Athletics signed free agent LHP Yorlenis Noa to a minor league contract. |
| May 18, 2018 | Signed as free agent | Ezequiel Carrera | — | New York Mets | New York Mets signed free agent LF Ezequiel Carrera to a minor league contract. |
| May 18, 2018 | Signed as free agent | Victor Rodriguez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Victor Rodriguez to a minor league contract. |
| May 17, 2018 | Released | Chase Headley | — | San Diego Padres | San Diego Padres released 3B Chase Headley. |
| May 17, 2018 | Signed as free agent | Tyler Goeddel | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LF Tyler Goeddel to a minor league contract. |
| May 17, 2018 | Signed as free agent | Alexis Cedano | — | Athletics | Oakland Athletics signed free agent RHP Alexis Cedano to a minor league contract. |
| May 17, 2018 | Signed as free agent | Yonatan De Leon | — | Athletics | Oakland Athletics signed free agent RHP Yonatan De Leon to a minor league contract. |
| May 17, 2018 | Signed as free agent | Mason Melotakis | — | Colorado Rockies | Colorado Rockies signed free agent LHP Mason Melotakis to a minor league contract. |
| May 17, 2018 | Signed as free agent | Stiven Montilla | — | Athletics | Oakland Athletics signed free agent RHP Stiven Montilla to a minor league contract. |
| May 17, 2018 | Signed as free agent | Cody Martin | — | New York Mets | New York Mets signed free agent RHP Cody Martin to a minor league contract. |
| May 17, 2018 | Signed as free agent | Moises Diaz | — | Chicago Cubs | Chicago Cubs signed free agent RHP Moises Diaz to a minor league contract. |
| May 17, 2018 | Signed as free agent | Wilfredo Sanchez | — | Washington Nationals | Washington Nationals signed free agent C Wilfredo Sanchez to a minor league contract. |
| May 16, 2018 | Signed as free agent | Matt Belisle | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Matt Belisle to a minor league contract. |
| May 16, 2018 | Signed as free agent | Logan Bawcom | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Logan Bawcom to a minor league contract. |
| May 16, 2018 | Signed as free agent | Eduardo Rivera | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Eduardo Rivera to a minor league contract. |
| May 16, 2018 | Signed as free agent | Andres Gonzalez | — | Los Angeles Angels | Los Angeles Angels signed free agent C Andres Gonzalez to a minor league contract. |
| May 16, 2018 | Signed as free agent | Dario Beltre | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Dario Beltre to a minor league contract. |
| May 16, 2018 | Signed as free agent | Josh A. Smith | — | Boston Red Sox | Boston Red Sox signed free agent RHP Josh Smith to a minor league contract. |
| May 15, 2018 | Trade | Josh Taylor | Arizona Diamondbacks | Boston Red Sox | Arizona Diamondbacks traded LHP Josh Taylor to Boston Red Sox. |
| May 15, 2018 | Signed as free agent | Kelvin Cáceres | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Kelvin Caceres to a minor league contract. |
| May 15, 2018 | Signed as free agent | Jhoan Cruz | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Jhoan Cruz to a minor league contract. |
| May 15, 2018 | Signed as free agent | Leony Rosario | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Leony Rosario to a minor league contract. |
| May 14, 2018 | Signed as free agent | Christhian Espinal | — | Chicago Cubs | Chicago Cubs signed free agent SS Christhian Espinal to a minor league contract. |
| May 14, 2018 | Signed as free agent | Pedro Martinez | — | Chicago Cubs | Chicago Cubs signed free agent SS Pedro Martinez to a minor league contract. |
| May 14, 2018 | Signed as free agent | Joander Suarez | — | New York Mets | New York Mets signed free agent RHP Joander Suarez to a minor league contract. |
| May 14, 2018 | Signed as free agent | Dionys Rodriguez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Dionys Rodriguez to a minor league contract. |
| May 11, 2018 | Signed as free agent | Rey Navarro | — | New York Yankees | New York Yankees signed free agent 2B Rey Navarro to a minor league contract. |
| May 11, 2018 | Signed as free agent | Johnny Giavotella | — | Chicago White Sox | Chicago White Sox signed free agent 2B Johnny Giavotella to a minor league contract. |
| May 11, 2018 | Signed as free agent | Michel Gelabert | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Michel Gelabert to a minor league contract. |
| May 11, 2018 | Signed as free agent | Yeisel De Los Santos | — | Seattle Mariners | Seattle Mariners signed free agent LHP Yeisel De Los Santos to a minor league contract. |
| May 11, 2018 | Signed as free agent | Darlin Noboa | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Darlin Noboa to a minor league contract. |
| May 11, 2018 | Signed as free agent | Alexander Amador | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 3B Alexander Amador to a minor league contract. |
| May 10, 2018 | Signed as free agent | Anfernee Seymour | — | Miami Marlins | Miami Marlins signed free agent CF Anfernee Seymour to a minor league contract. |
| May 10, 2018 | Signed as free agent | Darren Seferina | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 2B Darren Seferina to a minor league contract. |
| May 10, 2018 | Signed as free agent | Jeremis Herrera | — | Texas Rangers | Texas Rangers signed free agent RHP Jeremis Herrera to a minor league contract. |
| May 10, 2018 | Signed as free agent | Jan Cabrera | — | New York Mets | New York Mets signed free agent OF Jan Cabrera to a minor league contract. |
| May 10, 2018 | Signed as free agent | Daniel Robert | — | Texas Rangers | Texas Rangers signed free agent RHP Daniel Robert to a minor league contract. |
| May 9, 2018 | Trade | Gio Urshela | Cleveland Guardians | Toronto Blue Jays | Cleveland Indians traded 3B Gio Urshela to Toronto Blue Jays for Player To Be Named Later. |
| May 9, 2018 | Trade | Anthony McIver | Minnesota Twins | Seattle Mariners | Minnesota Twins traded LHP Anthony McIver to Seattle Mariners for cash. |
| May 9, 2018 | Signed as free agent | Patrick Kivlehan | — | New York Mets | New York Mets signed free agent LF Patrick Kivlehan to a minor league contract. |
| May 9, 2018 | Signed as free agent | Julio Avendano | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Julio Avendano to a minor league contract. |
| May 9, 2018 | Signed as free agent | Michael Guzman | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Michael Guzman to a minor league contract. |
| May 9, 2018 | Signed as free agent | Eduar Segovia | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Eduar Segovia to a minor league contract. |
| May 8, 2018 | Trade | Devin Mesoraco | Cincinnati Reds | New York Mets | New York Mets traded RHP Matt Harvey to Cincinnati Reds for Devin Mesoraco and cash. |
| May 8, 2018 | Signed as free agent | Ryan Fitzgerald | — | Boston Red Sox | Boston Red Sox signed free agent 2B Ryan Fitzgerald to a minor league contract. |
| May 8, 2018 | Signed as free agent | Guarner Dipre | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Guarner Dipre to a minor league contract. |
| May 8, 2018 | Signed as free agent | Victor Acosta | — | Detroit Tigers | Detroit Tigers signed free agent RHP Victor Acosta to a minor league contract. |
| May 8, 2018 | Signed as free agent | Wilfredo Flores | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Wilfredo Flores to a minor league contract. |
| May 8, 2018 | Signed as free agent | Albert Jerez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Albert Jerez to a minor league contract. |
| May 8, 2018 | Signed as free agent | Lane Adams | — | Chicago Cubs | Chicago Cubs signed free agent LF Lane Adams to a minor league contract. |
| May 8, 2018 | Signed as free agent | Fernery Ozuna | — | Texas Rangers | Texas Rangers signed free agent RHP Fernery Ozuna to a minor league contract. |
| May 8, 2018 | Signed as free agent | Alex Banks | — | Minnesota Twins | Minnesota Twins signed free agent RHP Alex Banks to a minor league contract. |
| May 7, 2018 | Signed as free agent | Tucker Healy | — | Seattle Mariners | Seattle Mariners signed free agent RHP Tucker Healy to a minor league contract. |
| May 7, 2018 | Signed as free agent | Chad Girodo | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Chad Girodo to a minor league contract. |
| May 7, 2018 | Signed as free agent | Gunn Omosako | — | Seattle Mariners | Seattle Mariners signed free agent CF Gunn Omosako to a minor league contract. |
| May 7, 2018 | Signed as free agent | Briant Tejeda | — | Detroit Tigers | Detroit Tigers signed free agent RHP Briant Tejeda to a minor league contract. |
| May 7, 2018 | Signed as free agent | Junior Gonzalez | — | Seattle Mariners | Seattle Mariners signed free agent C Junior Gonzalez to a minor league contract. |
| May 6, 2018 | Signed as free agent | Danny Espinosa | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent SS Danny Espinosa to a minor league contract. |
| May 5, 2018 | Signed as free agent | Clay Buchholz | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Clay Buchholz to a minor league contract. |
| May 5, 2018 | Trade | Oliver Drake | Milwaukee Brewers | Cleveland Guardians | Milwaukee Brewers traded RHP Oliver Drake to Cleveland Indians for cash. |
| May 5, 2018 | Trade | Tanner Murphy | Atlanta Braves | San Francisco Giants | Atlanta Braves traded C Tanner Murphy to San Francisco Giants. |
| May 5, 2018 | Trade | Max Cordy | Minnesota Twins | Los Angeles Angels | Minnesota Twins traded RHP Max Cordy to Los Angeles Angels. |
| May 5, 2018 | Signed as free agent | Pablo Aliendo | — | Chicago Cubs | Chicago Cubs signed free agent C Pablo Aliendo to a minor league contract. |
| May 5, 2018 | Signed as free agent | Rafael Herrera | — | Chicago Cubs | Chicago Cubs signed free agent CF Rafael Herrera to a minor league contract. |
| May 5, 2018 | Signed as free agent | Malcom Quintero | — | Chicago Cubs | Chicago Cubs signed free agent C Malcom Quintero to a minor league contract. |
| May 4, 2018 | Signed as free agent | Curtis Mead | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 3B Curtis Mead to a minor league contract. |
| May 4, 2018 | Signed as free agent | Sergio Palacio | — | Miami Marlins | Miami Marlins signed free agent RHP Sergio Palacio to a minor league contract. |
| May 4, 2018 | Signed as free agent | Paco Rodríguez | — | Minnesota Twins | Minnesota Twins signed free agent LHP Paco Rodriguez to a minor league contract. |
| May 4, 2018 | Signed as free agent | Bradley Haslam | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 3B Bradley Haslam to a minor league contract. |
| May 3, 2018 | Released | Ichiro Suzuki | — | Seattle Mariners | Seattle Mariners released RF Ichiro Suzuki. |
| May 3, 2018 | Signed as free agent | Cody Asche | — | New York Mets | New York Mets signed free agent OF Cody Asche to a minor league contract. |
| May 3, 2018 | Signed as free agent | Dean Kiekhefer | — | Athletics | Oakland Athletics signed free agent LHP Dean Kiekhefer to a minor league contract. |
| May 3, 2018 | Signed as free agent | Freddy Francisco | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Freddy Francisco to a minor league contract. |
| May 3, 2018 | Signed as free agent | Nicoly Pina | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Nicoly Pina to a minor league contract. |
| May 3, 2018 | Signed as free agent | Dan Lietz | — | Atlanta Braves | Atlanta Braves signed free agent LHP Dan Lietz to a minor league contract. |
| May 2, 2018 | Signed as free agent | Siamani Boekhoudt | — | Philadelphia Phillies | Philadelphia Phillies signed free agent CF Mani Boekhoudt to a minor league contract. |
| May 2, 2018 | Signed as free agent | Jhostyn Marin | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Jhostyn Marin to a minor league contract. |
| May 2, 2018 | Signed as free agent | Yuta Okazaki | — | Atlanta Braves | Atlanta Braves signed free agent C Yuta Okazaki to a minor league contract. |
| May 1, 2018 | Signed as free agent | David Hale | — | New York Yankees | New York Yankees signed free agent RHP David Hale to a minor league contract. |
| May 1, 2018 | Trade | Colin Poche | Arizona Diamondbacks | Tampa Bay Rays | Arizona Diamondbacks traded LHP Colin Poche and RHP Sam McWilliams to Tampa Bay Rays. |
| May 1, 2018 | Signed as free agent | Peter Bourjos | — | Atlanta Braves | Atlanta Braves signed free agent OF Peter Bourjos to a minor league contract. |
| May 1, 2018 | Signed as free agent | Melky Cabrera | — | Cleveland Guardians | Cleveland Indians signed free agent OF Melky Cabrera to a minor league contract. |
| May 1, 2018 | Signed as free agent | Paolo Espino | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Paolo Espino to a minor league contract. |
| Apr 30, 2018 | Signed as free agent | Tony Renda | — | Boston Red Sox | Boston Red Sox signed free agent 3B Tony Renda to a minor league contract. |
| Apr 30, 2018 | Signed as free agent | Ortwin Pieternella | — | Seattle Mariners | Seattle Mariners signed free agent C Ortwin Pieternella to a minor league contract. |
| Apr 30, 2018 | Signed as free agent | Taylor Murphy | — | Atlanta Braves | Atlanta Braves signed free agent OF Taylor Murphy to a minor league contract. |
| Apr 29, 2018 | Released | Peter Bourjos | — | Atlanta Braves | Atlanta Braves released CF Peter Bourjos. |
| Apr 29, 2018 | Signed as free agent | Julio Puello | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Julio Puello to a minor league contract. |
| Apr 29, 2018 | Signed as free agent | Jesus Hernandez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Jesus Hernandez to a minor league contract. |
| Apr 28, 2018 | Signed as free agent | Brett Oberholtzer | — | Colorado Rockies | Colorado Rockies signed free agent LHP Brett Oberholtzer to a minor league contract. |
| Apr 28, 2018 | Signed as free agent | Derek Diaz | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Derek Diaz to a minor league contract. |
| Apr 28, 2018 | Signed as free agent | Junior Guerrero | — | Colorado Rockies | Colorado Rockies signed free agent OF Junior Guerrero to a minor league contract. |
| Apr 28, 2018 | Signed as free agent | Ordomar Valdez | — | Cleveland Guardians | Cleveland Indians signed free agent 2B Ordomar Valdez to a minor league contract. |
| Apr 27, 2018 | Trade | Todd Cunningham | Pittsburgh Pirates | Chicago White Sox | Pittsburgh Pirates traded CF Todd Cunningham to Chicago White Sox for Player To Be Named Later. |
| Apr 27, 2018 | Signed as free agent | Matt Hague | — | Washington Nationals | Washington Nationals signed free agent 1B Matt Hague to a minor league contract. |
| Apr 27, 2018 | Released | Zach Jemiola | — | Colorado Rockies | Colorado Rockies released RHP Zach Jemiola. |
| Apr 27, 2018 | Signed as free agent | Wilber Diaz | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Wilber Diaz to a minor league contract. |
| Apr 27, 2018 | Signed as free agent | Jorge Ferrer | — | Chicago White Sox | Chicago White Sox signed free agent LHP Jorge Ferrer to a minor league contract. |
| Apr 27, 2018 | Signed as free agent | Rainiery Rodriguez | — | Atlanta Braves | Atlanta Braves signed free agent RHP Rainiery Rodriguez to a minor league contract. |
| Apr 27, 2018 | Signed as free agent | Zack Kelly | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Zack Kelly to a minor league contract. |
| Apr 26, 2018 | Signed as free agent | Flemin Bautista | — | Chicago Cubs | Chicago Cubs signed free agent SS Flemin Bautista to a minor league contract. |
| Apr 26, 2018 | Signed as free agent | Ramon Mendoza | — | St. Louis Cardinals | St. Louis Cardinals signed free agent 3B Ramon Mendoza to a minor league contract. |
| Apr 26, 2018 | Signed as free agent | Carlos Mola | — | Chicago White Sox | Chicago White Sox signed free agent RHP Carlos Mola to a minor league contract. |
| Apr 26, 2018 | Signed as free agent | Yosiel Serrano | — | Texas Rangers | Texas Rangers signed free agent RHP Yosiel Serrano to a minor league contract. |
| Apr 25, 2018 | Trade | Wilmer Font | Los Angeles Dodgers | Athletics | Los Angeles Dodgers traded RHP Wilmer Font to Oakland Athletics for LHP Logan Salow. |
| Apr 25, 2018 | Signed as free agent | Nathanael Bido | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Nathanael Bido to a minor league contract. |
| Apr 25, 2018 | Signed as free agent | Augusto Calderon | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Augusto Calderon to a minor league contract. |
| Apr 25, 2018 | Signed as free agent | Carlos Hernandez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Carlos Hernandez to a minor league contract. |
| Apr 25, 2018 | Signed as free agent | Rafael Marcano | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Rafael Marcano to a minor league contract. |
| Apr 24, 2018 | Trade | A.J. Cole | Washington Nationals | New York Yankees | Washington Nationals traded RHP A.J. Cole to New York Yankees for cash. |
| Apr 24, 2018 | Signed as free agent | Oscar Valenzuela | — | Kansas City Royals | Kansas City Royals signed free agent RHP Oscar Valenzuela to a minor league contract. |
| Apr 24, 2018 | Signed as free agent | Eduardo Valencia | — | Detroit Tigers | Detroit Tigers signed free agent C Eduardo Valencia to a minor league contract. |
| Apr 24, 2018 | Signed as free agent | Jojanse Torres | — | Houston Astros | Houston Astros signed free agent RHP Jojanse Torres to a minor league contract. |
| Apr 23, 2018 | Trade | Roenis Elías | Boston Red Sox | Seattle Mariners | Boston Red Sox traded LHP Roenis Elias to Seattle Mariners for Player To Be Named Later. |
| Apr 23, 2018 | Signed as free agent | Trevor Plouffe | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 3B Trevor Plouffe to a minor league contract. |
| Apr 23, 2018 | Signed as free agent | Kelvin Moncion | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Kelvin Moncion to a minor league contract. |
| Apr 23, 2018 | Signed as free agent | Jose Santamaria | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jose Santamaria to a minor league contract. |
| Apr 23, 2018 | Signed as free agent | Brian Ellington | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Brian Ellington to a minor league contract. |
| Apr 22, 2018 | Trade | Edwin Quezada | Arizona Diamondbacks | Seattle Mariners | Arizona Diamondbacks traded RHP Edwin Quezada to Seattle Mariners for Future Considerations. |
| Apr 21, 2018 | Trade | Jon Berti | Toronto Blue Jays | Cleveland Guardians | Toronto Blue Jays traded 2B Jon Berti to Cleveland Indians for cash. |
| Apr 21, 2018 | Signed as free agent | Octavio Cordova | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Martin Cordova to a minor league contract. |
| Apr 21, 2018 | Signed as free agent | Elvis Contreras | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Elvis Contreras to a minor league contract. |
| Apr 21, 2018 | Signed as free agent | Xavier Concepcion | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Xavier Concepcion to a minor league contract. |
| Apr 21, 2018 | Signed as free agent | Hector De Los Santos | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Hector De Los Santos to a minor league contract. |
| Apr 21, 2018 | Signed as free agent | Germin Lopez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Germin Lopez to a minor league contract. |
| Apr 21, 2018 | Signed as free agent | Darlin Moquete | — | St. Louis Cardinals | St. Louis Cardinals signed free agent OF Darlin Moquete to a minor league contract. |
| Apr 21, 2018 | Signed as free agent | Luis Ortiz | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Luis Ortiz to a minor league contract. |
| Apr 21, 2018 | Signed as free agent | Raydel Velette | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Raydel Velette to a minor league contract. |
| Apr 20, 2018 | Trade | Tyler Pill | Arizona Diamondbacks | Los Angeles Dodgers | Arizona Diamondbacks traded RHP Tyler Pill to Los Angeles Dodgers for cash. |
| Apr 20, 2018 | Signed as free agent | Rixon Wingrove | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Rixon Taylor-Wingrove to a minor league contract. |
| Apr 20, 2018 | Signed as free agent | Eduardo Del Rosario | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Eduardo Del Rosario to a minor league contract. |
| Apr 20, 2018 | Signed as free agent | Anfernee Benitez | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Anfernee Benitez to a minor league contract. |
| Apr 20, 2018 | Signed as free agent | Claudio Custodio | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Claudio Custodio to a minor league contract. |
| Apr 20, 2018 | Signed as free agent | Chris Reed | — | Miami Marlins | Miami Marlins signed free agent LHP Chris Reed to a minor league contract. |
| Apr 19, 2018 | Trade | Tyler Saladino | Chicago White Sox | Milwaukee Brewers | Chicago White Sox traded 2B Tyler Saladino to Milwaukee Brewers for cash. |
| Apr 19, 2018 | Trade | Trayce Thompson | Athletics | Chicago White Sox | Oakland Athletics traded CF Trayce Thompson to Chicago White Sox for cash. |
| Apr 19, 2018 | Signed as free agent | Vance Worley | — | New York Mets | New York Mets signed free agent RHP Vance Worley to a minor league contract. |
| Apr 18, 2018 | Signed as free agent | José Bautista | — | Atlanta Braves | Atlanta Braves signed free agent OF Jose Bautista to a minor league contract. |
| Apr 18, 2018 | Signed as free agent | Adam Lind | — | New York Yankees | New York Yankees signed free agent 1B Adam Lind to a minor league contract. |
| Apr 18, 2018 | Signed as free agent | Juan Mata | — | Tampa Bay Rays | Tampa Bay Rays signed free agent OF Juan Mata to a minor league contract. |
| Apr 18, 2018 | Signed as free agent | Aldo Ramirez | — | Boston Red Sox | Boston Red Sox signed free agent RHP Aldo Ramirez to a minor league contract. |
| Apr 17, 2018 | Trade | Ariel Hernández | Cincinnati Reds | Los Angeles Dodgers | Cincinnati Reds traded RHP Ariel Hernandez to Los Angeles Dodgers for 1B Ibandel Isabel and RHP Zach Neal. |
| Apr 17, 2018 | Signed as free agent | Scott Copeland | — | New York Mets | New York Mets signed free agent RHP Scott Copeland to a minor league contract. |
| Apr 17, 2018 | Signed as free agent | Mark Reynolds | — | Washington Nationals | Washington Nationals signed free agent 1B Mark Reynolds to a minor league contract. |
| Apr 16, 2018 | Signed as free agent | Jace Peterson | — | New York Yankees | New York Yankees signed free agent 2B Jace Peterson. |
| Apr 16, 2018 | Signed as free agent | Kade Scivicque | — | Detroit Tigers | Detroit Tigers signed free agent C Kade Scivicque to a minor league contract. |
| Apr 16, 2018 | Trade | Tony Sanchez | Cincinnati Reds | Texas Rangers | Cincinnati Reds traded C Tony Sanchez to Texas Rangers for cash. |
| Apr 16, 2018 | Signed as free agent | Darien Núñez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Darien Nunez to a minor league contract. |
| Apr 16, 2018 | Signed as free agent | Hector Ayuso | — | New York Mets | New York Mets signed free agent RHP Hector Ayuso to a minor league contract. |
| Apr 16, 2018 | Signed as free agent | Pablo Falconett | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Pablo Falconett to a minor league contract. |
| Apr 16, 2018 | Signed as free agent | Luis Feliz | — | Texas Rangers | Texas Rangers signed free agent OF Luis Feliz to a minor league contract. |
| Apr 16, 2018 | Signed as free agent | Frederic Garcia | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Frederic Garcia to a minor league contract. |
| Apr 16, 2018 | Signed as free agent | Spencer Moran | — | Chicago White Sox | Chicago White Sox signed free agent RHP Spencer Moran to a minor league contract. |
| Apr 15, 2018 | Signed as free agent | Johnny Monell | — | New York Mets | New York Mets signed free agent C Johnny Monell to a minor league contract. |
| Apr 14, 2018 | Signed as free agent | Nick Noonan | — | Texas Rangers | Texas Rangers signed free agent 3B Nick Noonan to a minor league contract. |
| Apr 14, 2018 | Signed as free agent | Darwin Baez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Darwin Baez to a minor league contract. |
| Apr 14, 2018 | Signed as free agent | Pedro Sanchez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 2B Pedro Sanchez to a minor league contract. |
| Apr 13, 2018 | Signed as free agent | Tuffy Gosewisch | — | Washington Nationals | Washington Nationals signed free agent C Tuffy Gosewisch to a minor league contract. |
| Apr 13, 2018 | Signed as free agent | Tarik El-Abour | — | Kansas City Royals | Kansas City Royals signed free agent OF Tarik El-Abour to a minor league contract. |
| Apr 13, 2018 | Signed as free agent | Yovani Gallardo | — | Texas Rangers | Texas Rangers signed free agent RHP Yovani Gallardo to a minor league contract. |
| Apr 13, 2018 | Signed as free agent | Daiwer Castellanos | — | Tampa Bay Rays | Tampa Bay Rays signed free agent OF Daiwer Castellanos to a minor league contract. |
| Apr 13, 2018 | Signed as free agent | Oneill Manzueta | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RF Oneill Manzueta to a minor league contract. |
| Apr 12, 2018 | Signed as free agent | Carlos Gomez | — | New York Yankees | New York Yankees signed free agent RHP Carlos Gomez to a minor league contract. |
| Apr 12, 2018 | Signed as free agent | Denny Roman | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Denny Roman to a minor league contract. |
| Apr 12, 2018 | Signed as free agent | Andy Rubio | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Andy Rubio to a minor league contract. |
| Apr 12, 2018 | Signed as free agent | Abismael Villaman | — | New York Yankees | New York Yankees signed free agent LHP Abismael Villaman to a minor league contract. |
| Apr 12, 2018 | Signed as free agent | Anderson Munoz | — | New York Yankees | New York Yankees signed free agent RHP Anderson Munoz to a minor league contract. |
| Apr 12, 2018 | Signed as free agent | Wander Franco | — | San Francisco Giants | San Francisco Giants signed free agent 3B Wander Franco to a minor league contract. |
| Apr 12, 2018 | Signed as free agent | Nick Jobst | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Nick Jobst to a minor league contract. |
| Apr 12, 2018 | Signed as free agent | Martin Anderson | — | Miami Marlins | Miami Marlins signed free agent LHP Martin Anderson to a minor league contract. |
| Apr 11, 2018 | Signed as free agent | Steve Selsky | — | Cincinnati Reds | Cincinnati Reds signed free agent LF Steve Selsky to a minor league contract. |
| Apr 11, 2018 | Signed as free agent | Daneuris Lagrange | — | Chicago White Sox | Chicago White Sox signed free agent RHP Daneuris Lagrange to a minor league contract. |
| Apr 11, 2018 | Signed as free agent | Andres Rosario | — | Chicago White Sox | Chicago White Sox signed free agent 3B Andres Rosario to a minor league contract. |
| Apr 11, 2018 | Signed as free agent | Cristian Charle | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Christian Charle to a minor league contract. |
| Apr 11, 2018 | Signed as free agent | Luis Hernandez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Luis Hernandez to a minor league contract. |
| Apr 10, 2018 | Trade | Kendall Coleman | New York Yankees | New York Mets | New York Mets traded RF L.J. Mazzilli to New York Yankees for LF Kendall Coleman. |
| Apr 10, 2018 | Trade | Jeremy Hazelbaker | Arizona Diamondbacks | Tampa Bay Rays | Arizona Diamondbacks traded CF Jeremy Hazelbaker to Tampa Bay Rays for cash. |
| Apr 10, 2018 | Signed as free agent | Justin Oferman | — | Colorado Rockies | Colorado Rockies signed free agent SS Justin Oferman to a minor league contract. |
| Apr 10, 2018 | Signed as free agent | Luis Ozoria | — | Colorado Rockies | Colorado Rockies signed free agent LHP Luis Ozoria to a minor league contract. |
| Apr 10, 2018 | Signed as free agent | Francisco Fermin | — | Chicago Cubs | Chicago Cubs signed free agent RHP Francisco Fermin to a minor league contract. |
| Apr 10, 2018 | Signed as free agent | Yomar Valentin | — | Detroit Tigers | Detroit Tigers signed free agent 2B Yomar Valentin to a minor league contract. |
| Apr 10, 2018 | Signed as free agent | Drew Weston | — | Chicago White Sox | Chicago White Sox signed free agent LHP Drew Weston to a minor league contract. |
| Apr 9, 2018 | Signed as free agent | Chris Herrmann | — | Seattle Mariners | Seattle Mariners signed free agent C Chris Herrmann to a minor league contract. |
| Apr 9, 2018 | Signed as free agent | Jordan Jankowski | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Jordan Jankowski to a minor league contract. |
| Apr 9, 2018 | Signed as free agent | Edgar Martinez | — | Kansas City Royals | Kansas City Royals signed free agent 2B Edgar Martinez to a minor league contract. |
| Apr 8, 2018 | Released | Brian Ellington | — | Miami Marlins | Miami Marlins released RHP Brian Ellington. |
| Apr 8, 2018 | Signed as free agent | Samuel Burgos | — | Texas Rangers | Texas Rangers signed free agent RHP Samuel Burgos to a minor league contract. |
| Apr 7, 2018 | Signed | Robby Sexton | — | Arizona Diamondbacks | Arizona Diamondbacks signed LHP Robby Sexton. |
| Apr 7, 2018 | Signed as free agent | David Holmberg | — | Colorado Rockies | Colorado Rockies signed free agent LHP David Holmberg to a minor league contract. |
| Apr 6, 2018 | Trade | Brett Nicholas | Texas Rangers | San Diego Padres | Texas Rangers traded C Brett Nicholas to San Diego Padres for Future Considerations. |
| Apr 6, 2018 | Signed as free agent | Kyle Zimmer | — | Kansas City Royals | Kansas City Royals signed free agent RHP Kyle Zimmer to a minor league contract. |
| Apr 6, 2018 | Released | Robby Sexton | — | Boston Red Sox | Boston Red Sox released LHP Robby Sexton. |
| Apr 6, 2018 | Signed as free agent | Dustin Ackley | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Dustin Ackley to a minor league contract. |
| Apr 6, 2018 | Signed as free agent | Daury Cabrera | — | Kansas City Royals | Kansas City Royals signed free agent RHP Daury Cabrera to a minor league contract. |
| Apr 6, 2018 | Signed as free agent | Ronaldo Ceballos | — | Kansas City Royals | Kansas City Royals signed free agent RHP Ronaldo Ceballos to a minor league contract. |
| Apr 6, 2018 | Signed as free agent | Dionicio Jimenez | — | Chicago White Sox | Chicago White Sox signed free agent RHP Dionicio Jimenez to a minor league contract. |
| Apr 6, 2018 | Signed as free agent | Jesus Luna | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Jesus Luna to a minor league contract. |
| Apr 6, 2018 | Signed as free agent | Deivi Munoz | — | New York Yankees | New York Yankees signed free agent SS Deivy Munoz to a minor league contract. |
| Apr 6, 2018 | Signed as free agent | Gustavo Polanco | — | Kansas City Royals | Kansas City Royals signed free agent P Gustavo Polanco to a minor league contract. |
| Apr 6, 2018 | Signed as free agent | Tyler Ladendorf | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Tyler Ladendorf to a minor league contract. |
| Apr 6, 2018 | Signed as free agent | Sean Rackoski | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Sean Rackoski to a minor league contract. |
| Apr 5, 2018 | Signed as free agent | Josias De Los Santos | — | Seattle Mariners | Seattle Mariners signed free agent RHP Josias De Los Santos to a minor league contract. |
| Apr 5, 2018 | Signed as free agent | Junior Almonte | — | Kansas City Royals | Kansas City Royals signed free agent RHP Junior Almonte to a minor league contract. |
| Apr 5, 2018 | Signed as free agent | Carlos German | — | Seattle Mariners | Seattle Mariners signed free agent RHP Carlos German to a minor league contract. |
| Apr 5, 2018 | Signed as free agent | Jery Hernandez | — | Seattle Mariners | Seattle Mariners signed free agent SS Jery Hernandez to a minor league contract. |
| Apr 5, 2018 | Signed as free agent | Jaison Paniagua | — | New York Mets | New York Mets signed free agent RHP Jaison Paniagua to a minor league contract. |
| Apr 5, 2018 | Signed as free agent | Javier Vasquez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Javier Vasquez to a minor league contract. |
| Apr 5, 2018 | Signed as free agent | Matt Bower | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Matt Bower to a minor league contract. |
| Apr 5, 2018 | Signed as free agent | Jaret Hellinger | — | Kansas City Royals | Kansas City Royals signed free agent LHP Jaret Hellinger to a minor league contract. |
| Apr 5, 2018 | Signed as free agent | Drew Harrington | — | Chicago White Sox | Chicago White Sox signed free agent LHP Drew Harrington to a minor league contract. |
| Apr 4, 2018 | Trade | Cody Asche | Kansas City Royals | New York Yankees | Kansas City Royals traded 3B Cody Asche to New York Yankees for Future Considerations. |
| Apr 4, 2018 | Trade | Miguel Almonte | Kansas City Royals | Los Angeles Angels | Kansas City Royals traded RHP Miguel Almonte to Los Angeles Angels for cash. |
| Apr 4, 2018 | Signed as free agent | Zach Taylor | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Zach Taylor to a minor league contract. |
| Apr 4, 2018 | Signed as free agent | Francisco German | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Francisco German to a minor league contract. |
| Apr 4, 2018 | Signed as free agent | Malcom Culver | — | Kansas City Royals | Kansas City Royals signed free agent SS Malcom Culver to a minor league contract. |
| Apr 3, 2018 | Signed as free agent | Craig Breslow | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Craig Breslow to a minor league contract. |
| Apr 3, 2018 | Signed as free agent | Cameron Rupp | — | Texas Rangers | Texas Rangers signed free agent C Cameron Rupp to a minor league contract. |
| Apr 3, 2018 | Trade | Akeel Morris | Atlanta Braves | Los Angeles Angels | Atlanta Braves traded RHP Akeel Morris to Los Angeles Angels for Player To Be Named Later. |
| Apr 3, 2018 | Released | Kyle Zimmer | — | Kansas City Royals | Kansas City Royals released RHP Kyle Zimmer. |
| Apr 3, 2018 | Trade | Daniel Camarena | Chicago Cubs | New York Yankees | Chicago Cubs traded LHP Daniel Camarena to New York Yankees for Future Considerations. |
| Apr 3, 2018 | Signed as free agent | Darnell Sweeney | — | Toronto Blue Jays | Toronto Blue Jays signed free agent OF Darnell Sweeney to a minor league contract. |
| Apr 3, 2018 | Signed as free agent | Jayson Werth | — | Seattle Mariners | Seattle Mariners signed free agent OF Jayson Werth to a minor league contract. |
| Apr 3, 2018 | Signed as free agent | Kyle Lohse | — | Kansas City Royals | Kansas City Royals signed free agent RHP Kyle Lohse to a minor league contract. |
| Apr 3, 2018 | Signed as free agent | Wilson Valdez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Wilson Valdez to a minor league contract. |
| Apr 3, 2018 | Signed as free agent | Jordan Schafer | — | San Francisco Giants | San Francisco Giants signed free agent LHP Jordan Schafer to a minor league contract. |
| Apr 3, 2018 | Signed as free agent | Cristofer Melendez | — | Chicago White Sox | Chicago White Sox signed free agent RHP Cristofer Melendez to a minor league contract. |
| Apr 3, 2018 | Signed as free agent | Zach Becherer | — | San Francisco Giants | San Francisco Giants signed free agent RHP Zach Becherer to a minor league contract. |
| Apr 2, 2018 | Trade | Stefan Crichton | Baltimore Orioles | Arizona Diamondbacks | Baltimore Orioles traded RHP Stefan Crichton to Arizona Diamondbacks for cash. |
| Apr 2, 2018 | Signed as free agent | Michael Saunders | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Michael Saunders to a minor league contract. |
| Apr 2, 2018 | Trade | Luis Ysla | Los Angeles Dodgers | Baltimore Orioles | Baltimore Orioles traded RHP Jesus Liranzo to Los Angeles Dodgers for LHP Luis Ysla. |
| Apr 2, 2018 | Signed as free agent | Dairon Blanco | — | Athletics | Oakland Athletics signed free agent OF Dairon Blanco to a minor league contract. |
| Apr 2, 2018 | Signed as free agent | Daniel Hudson | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Daniel Hudson to a minor league contract. |
| Apr 2, 2018 | Signed as free agent | Andrés Blanco | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 2B Andres Blanco to a minor league contract. |
| Apr 2, 2018 | Signed as free agent | Josh Roeder | — | Miami Marlins | Miami Marlins signed free agent RHP Josh Roeder to a minor league contract. |
| Apr 2, 2018 | Signed as free agent | Dylan Moore | — | Milwaukee Brewers | Milwaukee Brewers signed free agent SS Dylan Moore to a minor league contract. |
| Apr 2, 2018 | Signed as free agent | Jose Abel Hernandez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent OF Jose Abel Hernandez to a minor league contract. |
| Apr 2, 2018 | Signed as free agent | Alonso Garcia | — | Chicago Cubs | Chicago Cubs signed free agent RHP Alonso Garcia to a minor league contract. |
| Apr 1, 2018 | Trade | Breyvic Valera | St. Louis Cardinals | Los Angeles Dodgers | Los Angeles Dodgers traded CF Johan Mieses to St. Louis Cardinals for 2B Breyvic Valera. |
| Apr 1, 2018 | Signed as free agent | Bryan Hudson | — | Toronto Blue Jays | Toronto Blue Jays signed free agent OF Bryan Hudson to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Colton Murray | — | Miami Marlins | Miami Marlins signed free agent RHP Colton Murray to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Matt McPhearson | — | New York Yankees | New York Yankees signed free agent CF Matt McPhearson to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Cade Gotta | — | Miami Marlins | Miami Marlins signed free agent OF Cade Gotta to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Nate Coronado | — | New York Yankees | New York Yankees signed free agent IF Nathaniel Coronado to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Carlos Garcia | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Carlos Garcia to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Pedro King | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Pedro King to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Nigel Calmes | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Nigel Calmes to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Andres Diaz | — | Kansas City Royals | Kansas City Royals signed free agent RHP Andres Diaz to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Jesus Roman | — | Kansas City Royals | Kansas City Royals signed free agent LHP Jesus Roman to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Israiky Berroa | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Israiky Berroa to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Stiven Gutierrez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Stiven Gutierrez to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Fernando Villicana | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Fernando Villicana to a minor league contract. |
| Apr 1, 2018 | Signed as free agent | Josh Hart | — | Miami Marlins | Miami Marlins signed free agent OF Josh Hart to a minor league contract. |
| Mar 31, 2018 | Signed as free agent | Greg Holland | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Greg Holland. |
| Mar 31, 2018 | Signed as free agent | Yovani Gallardo | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Yovani Gallardo. |
| Mar 31, 2018 | Trade | Josh Lucas | St. Louis Cardinals | Athletics | St. Louis Cardinals traded RHP Josh Lucas to Oakland Athletics for RHP Casey Meisner. |
| Mar 31, 2018 | Trade | Ryan Schimpf | Atlanta Braves | Los Angeles Angels | Los Angeles Angels traded C Carlos Perez to Atlanta Braves for 3B Ryan Schimpf. |
| Mar 31, 2018 | Signed as free agent | Heribert Garcia | — | Kansas City Royals | Kansas City Royals signed free agent RHP Heribert Garcia to a minor league contract. |
| Mar 31, 2018 | Signed as free agent | Logan Boyd | — | Miami Marlins | Miami Marlins signed free agent LHP Logan Boyd to a minor league contract. |
| Mar 30, 2018 | Signed as free agent | Oliver Pérez | — | New York Yankees | New York Yankees signed free agent LHP Oliver Perez to a minor league contract. |
| Mar 30, 2018 | Signed as free agent | Bruce Caldwell | — | New York Yankees | New York Yankees signed free agent 2B Bruce Caldwell to a minor league contract. |
| Mar 30, 2018 | Signed as free agent | Carlos Torres | — | Washington Nationals | Washington Nationals signed free agent RHP Carlos Torres to a minor league contract. |
| Mar 30, 2018 | Released | Robby Sexton | — | Boston Red Sox | Boston Red Sox released LHP Robby Sexton. |
| Mar 30, 2018 | Trade | Darrell Miller | Kansas City Royals | Los Angeles Dodgers | Kansas City Royals traded DH Darrell Miller to Los Angeles Dodgers. |
| Mar 29, 2018 | Trade | Garrett Kennedy | Los Angeles Dodgers | Seattle Mariners | Los Angeles Dodgers traded C Garrett Kennedy to Seattle Mariners. |
| Mar 29, 2018 | Signed as free agent | Ben Revere | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Ben Revere to a minor league contract. |
| Mar 29, 2018 | Signed as free agent | Ralston Cash | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Ralston Cash to a minor league contract. |
| Mar 29, 2018 | Signed as free agent | Levi Michael | — | New York Mets | New York Mets signed free agent 2B Levi Michael to a minor league contract. |
| Mar 29, 2018 | Signed as free agent | Correlle Prime | — | Texas Rangers | Texas Rangers signed free agent 1B Correlle Prime to a minor league contract. |
| Mar 29, 2018 | Signed as free agent | Frank Duncan | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Frank Duncan to a minor league contract. |
| Mar 29, 2018 | Signed as free agent | Marc Brakeman | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Marc Brakeman to a minor league contract. |
| Mar 29, 2018 | Signed as free agent | Alejandro Martinez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Alejandro Martinez to a minor league contract. |
| Mar 29, 2018 | Signed as free agent | Garrett Kelly | — | Chicago Cubs | Chicago Cubs signed free agent RHP Garrett Kelly to a minor league contract. |
| Mar 29, 2018 | Signed as free agent | Michael Santos | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Michael Santos to a minor league contract. |
| Mar 29, 2018 | Signed as free agent | Chris Coghlan | — | Chicago Cubs | Chicago Cubs signed free agent LF Chris Coghlan to a minor league contract. |
| Mar 28, 2018 | Released | Daniel Hudson | — | Tampa Bay Rays | Tampa Bay Rays released RHP Daniel Hudson. |
| Mar 28, 2018 | Trade | Ricardo Pinto | Philadelphia Phillies | Chicago White Sox | Philadelphia Phillies traded RHP Ricardo Pinto to Chicago White Sox for Future Considerations. |
| Mar 28, 2018 | Signed as free agent | Jairo Labourt | — | Detroit Tigers | Detroit Tigers signed free agent LHP Jairo Labourt to a minor league contract. |
| Mar 28, 2018 | Trade | Dean Anna | Chicago White Sox | Philadelphia Phillies | Chicago White Sox traded SS Dean Anna to Philadelphia Phillies. |
| Mar 28, 2018 | Signed as free agent | Stephen Perakslis | — | Seattle Mariners | Seattle Mariners signed free agent RHP Stephen Perakslis to a minor league contract. |
| Mar 28, 2018 | Signed as free agent | Cael Brockmeyer | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Cael Brockmeyer to a minor league contract. |
| Mar 28, 2018 | Released | Joe Colón J | — | St. Louis Cardinals | St. Louis Cardinals released RHP Joe Colon. |
| Mar 28, 2018 | Signed as free agent | Alec Crawford | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Alec Crawford to a minor league contract. |
| Mar 28, 2018 | Signed as free agent | Stir Candelario | — | Tampa Bay Rays | Tampa Bay Rays signed free agent OF Stir Candelario to a minor league contract. |
| Mar 28, 2018 | Signed as free agent | Carlos Sanchez | — | Boston Red Sox | Boston Red Sox signed free agent RF Carlos Sanchez to a minor league contract. |
| Mar 27, 2018 | Signed as free agent | Alexi Amarista | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Alexi Amarista to a minor league contract. |
| Mar 27, 2018 | Trade | Rob Refsnyder | Cleveland Guardians | Tampa Bay Rays | Cleveland Indians traded LF Rob Refsnyder to Tampa Bay Rays for . |
| Mar 27, 2018 | Signed as free agent | Adam Rosales | — | Cleveland Guardians | Cleveland Indians signed free agent SS Adam Rosales to a minor league contract. |
| Mar 27, 2018 | Signed as free agent | Rodrigo Ayarza | — | Miami Marlins | Miami Marlins signed free agent 2B Rodrigo Ayarza to a minor league contract. |
| Mar 27, 2018 | Signed as free agent | Jason Carmona | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jason Carmona to a minor league contract. |
| Mar 27, 2018 | Signed as free agent | Logan Ondrusek | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Logan Ondrusek to a minor league contract. |
| Mar 27, 2018 | Signed as free agent | Luis Encarnacion | — | Houston Astros | Houston Astros signed free agent 1B Luis Encarnacion to a minor league contract. |
| Mar 27, 2018 | Signed as free agent | Brallan Perez | — | Athletics | Oakland Athletics signed free agent 2B Brallan Perez to a minor league contract. |
| Mar 26, 2018 | Signed as free agent | Ryan Flaherty | — | Atlanta Braves | Atlanta Braves signed free agent 3B Ryan Flaherty. |
| Mar 26, 2018 | Signed as free agent | Jihwan Bae | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent SS Ji-Hwan Bae to a minor league contract. |
| Mar 26, 2018 | Signed as free agent | Bartolo Colon | — | Texas Rangers | Texas Rangers signed free agent RHP Bartolo Colon to a minor league contract. |
| Mar 26, 2018 | Signed as free agent | Trevor Plouffe | — | Texas Rangers | Texas Rangers signed free agent 3B Trevor Plouffe to a minor league contract. |
| Mar 26, 2018 | Released | Dan Jennings | — | Tampa Bay Rays | Tampa Bay Rays released LHP Dan Jennings. |
| Mar 26, 2018 | Released | Yovani Gallardo | — | Milwaukee Brewers | Milwaukee Brewers released RHP Yovani Gallardo. |
| Mar 26, 2018 | Released | Cameron Rupp | — | Philadelphia Phillies | Philadelphia Phillies released C Cameron Rupp. |
| Mar 26, 2018 | Released | Jarrett Parker | — | San Francisco Giants | San Francisco Giants released LF Jarrett Parker. |
| Mar 26, 2018 | Released | Chris Herrmann | — | Arizona Diamondbacks | Arizona Diamondbacks released C Chris Herrmann. |
| Mar 26, 2018 | Signed as free agent | Gordon Beckham | — | Seattle Mariners | Seattle Mariners signed free agent 2B Gordon Beckham to a minor league contract. |
| Mar 26, 2018 | Signed as free agent | Skyler Ewing | — | Miami Marlins | Miami Marlins signed free agent C Skyler Ewing to a minor league contract. |
| Mar 26, 2018 | Signed as free agent | Osvaldo De La Rosa | — | Boston Red Sox | Boston Red Sox signed free agent RHP Osvaldo De La Rosa to a minor league contract. |
| Mar 26, 2018 | Signed as free agent | Franyer Hernandez | — | New York Yankees | New York Yankees signed free agent RHP Franyer Hernandez to a minor league contract. |
| Mar 26, 2018 | Signed as free agent | Juan Mora | — | Chicago Cubs | Chicago Cubs signed free agent 2B Juan Mora to a minor league contract. |
| Mar 25, 2018 | Signed as free agent | Kevin Canelon | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Kevin Canelon to a minor league contract. |
| Mar 25, 2018 | Released | Ben Revere | — | Cincinnati Reds | Cincinnati Reds released LF Ben Revere. |
| Mar 25, 2018 | Signed as free agent | Wade LeBlanc | — | Seattle Mariners | Seattle Mariners signed free agent LHP Wade LeBlanc. |
| Mar 25, 2018 | Signed as free agent | Arturo Nieto | — | San Diego Padres | San Diego Padres signed free agent C Arturo Nieto to a minor league contract. |
| Mar 25, 2018 | Signed as free agent | Edwin Moreno | — | San Diego Padres | San Diego Padres signed free agent RF Edwin Moreno to a minor league contract. |
| Mar 25, 2018 | Signed as free agent | Peter Bourjos | — | Atlanta Braves | Atlanta Braves signed free agent CF Peter Bourjos. |
| Mar 25, 2018 | Trade | Brandon Bednar | San Francisco Giants | Philadelphia Phillies | San Francisco Giants traded 3B Brandon Bednar to Philadelphia Phillies. |
| Mar 25, 2018 | Trade | Ramón Flores | Arizona Diamondbacks | Boston Red Sox | Arizona Diamondbacks traded OF Ramon Flores to Boston Red Sox. |
| Mar 24, 2018 | Signed as free agent | Kellin Deglan | — | New York Yankees | New York Yankees signed free agent C Kellin Deglan to a minor league contract. |
| Mar 24, 2018 | Trade | Deven Marrero | Boston Red Sox | Arizona Diamondbacks | Boston Red Sox traded 3B Deven Marrero to Arizona Diamondbacks for Player To Be Named Later. |
| Mar 24, 2018 | Released | Craig Breslow | — | Toronto Blue Jays | Toronto Blue Jays released LHP Craig Breslow. |
| Mar 24, 2018 | Released | Francisco Rodríguez | — | Philadelphia Phillies | Philadelphia Phillies released RHP Francisco Rodriguez. |
| Mar 24, 2018 | Signed as free agent | Murphy Smith | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Murphy Smith to a minor league contract. |
| Mar 24, 2018 | Released | Carlos Torres | — | Cleveland Guardians | Cleveland Indians released RHP Carlos Torres. |
| Mar 24, 2018 | Released | Bartolo Colon | — | Texas Rangers | Texas Rangers released RHP Bartolo Colon. |
| Mar 24, 2018 | Trade | Mike Ohlman | Texas Rangers | Boston Red Sox | Texas Rangers traded C Mike Ohlman to Boston Red Sox for cash. |
| Mar 24, 2018 | Released | Michael Saunders | — | Kansas City Royals | Kansas City Royals released RF Michael Saunders. |
| Mar 24, 2018 | Released | Ricky Nolasco | — | Kansas City Royals | Kansas City Royals released RHP Ricky Nolasco. |
| Mar 24, 2018 | Released | Alexi Amarista | — | Detroit Tigers | Detroit Tigers released SS Alexi Amarista. |
| Mar 24, 2018 | Released | Reid Brignac | — | Washington Nationals | Washington Nationals released SS Reid Brignac. |
| Mar 24, 2018 | Released | Ryan Raburn | — | Washington Nationals | Washington Nationals released OF Ryan Raburn. |
| Mar 24, 2018 | Released | Scott Kazmir | — | Atlanta Braves | Atlanta Braves released LHP Scott Kazmir. |
| Mar 24, 2018 | Trade | Ariel Sandoval | Los Angeles Dodgers | Seattle Mariners | Los Angeles Dodgers traded RF Ariel Sandoval to Seattle Mariners. |
| Mar 24, 2018 | Trade | Ronnie Freeman | Arizona Diamondbacks | San Francisco Giants | Arizona Diamondbacks traded C Ronnie Freeman to San Francisco Giants. |
| Mar 24, 2018 | Released | Michael Kohn | — | Minnesota Twins | Minnesota Twins released RHP Michael Kohn. |
| Mar 24, 2018 | Signed as free agent | Jhonny David | — | Milwaukee Brewers | Milwaukee Brewers signed free agent OF Jhonny David to a minor league contract. |
| Mar 24, 2018 | Signed as free agent | Reidy Mercado | — | Milwaukee Brewers | Milwaukee Brewers signed free agent CF Reidy Mercado to a minor league contract. |
| Mar 24, 2018 | Signed as free agent | Jesus Gomez | — | Chicago Cubs | Chicago Cubs signed free agent LHP Jesus Gomez to a minor league contract. |
| Mar 24, 2018 | Signed as free agent | Andy Hernandez | — | Chicago Cubs | Chicago Cubs signed free agent RHP Andy Hernandez to a minor league contract. |
| Mar 24, 2018 | Signed as free agent | Victor Vargas | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 2B Victor Vargas to a minor league contract. |
| Mar 24, 2018 | Signed as free agent | Francisco Villegas | — | Texas Rangers | Texas Rangers signed free agent LHP Francisco Villegas to a minor league contract. |
| Mar 23, 2018 | Released | Gordon Beckham | — | Seattle Mariners | Seattle Mariners released 2B Gordon Beckham. |
| Mar 23, 2018 | Released | Wade LeBlanc | — | New York Yankees | New York Yankees released LHP Wade LeBlanc. |
| Mar 23, 2018 | Released | Peter Bourjos | — | Chicago Cubs | Chicago Cubs released CF Peter Bourjos. |
| Mar 23, 2018 | Released | Adam Rosales | — | Philadelphia Phillies | Philadelphia Phillies released SS Adam Rosales. |
| Mar 23, 2018 | Trade | Adam Bray | Los Angeles Dodgers | Minnesota Twins | Los Angeles Dodgers traded RHP Adam Bray to Minnesota Twins. |
| Mar 23, 2018 | Trade | Rainis Silva | Minnesota Twins | Seattle Mariners | Minnesota Twins traded C Rainis Silva to Seattle Mariners for Future Considerations. |
| Mar 23, 2018 | Signed as free agent | Alexis Olmeda | — | Los Angeles Angels | Los Angeles Angels signed free agent C Alexis Olmeda to a minor league contract. |
| Mar 23, 2018 | Signed as free agent | Moises Causado | — | Minnesota Twins | Minnesota Twins signed free agent RHP Moises Causado to a minor league contract. |
| Mar 23, 2018 | Signed as free agent | Melvin Martinez | — | San Francisco Giants | San Francisco Giants signed free agent RHP Melvin Martinez to a minor league contract. |
| Mar 23, 2018 | Signed as free agent | Carlos Meza | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Carlos Meza to a minor league contract. |
| Mar 22, 2018 | Signed as free agent | Curt Casali | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Curt Casali to a minor league contract and invited him to spring training. |
| Mar 22, 2018 | Released | Chris Heisey | — | Minnesota Twins | Minnesota Twins released LF Chris Heisey. |
| Mar 22, 2018 | Released | Jason Motte | — | St. Louis Cardinals | St. Louis Cardinals released RHP Jason Motte. |
| Mar 22, 2018 | Trade | Matt Tenuta | Kansas City Royals | Seattle Mariners | Kansas City Royals traded RHP Ashton Goudeau and LHP Matt Tenuta to Seattle Mariners. |
| Mar 22, 2018 | Trade | Diego Goris | Chicago White Sox | San Diego Padres | Chicago White Sox traded 3B Diego Goris to San Diego Padres for Future Considerations. |
| Mar 22, 2018 | Released | Ryan Flaherty | — | Philadelphia Phillies | Philadelphia Phillies released 2B Ryan Flaherty. |
| Mar 22, 2018 | Signed as free agent | Zech Lemond | — | Miami Marlins | Miami Marlins signed free agent RHP Zech Lemond to a minor league contract. |
| Mar 22, 2018 | Signed as free agent | Felix Valerio | — | New York Mets | New York Mets signed free agent SS Felix Valerio to a minor league contract. |
| Mar 22, 2018 | Signed as free agent | Enmanuel Almonte | — | New York Mets | New York Mets signed free agent RHP Enmanuel Almonte to a minor league contract. |
| Mar 22, 2018 | Signed as free agent | Eliam Arias | — | New York Mets | New York Mets signed free agent SS Eliam Arias to a minor league contract. |
| Mar 22, 2018 | Signed as free agent | Tilsaimy Melfor | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 3B Tilsaimy Melfor to a minor league contract. |
| Mar 22, 2018 | Signed as free agent | Jon Edwards | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Jon Edwards to a minor league contract. |
| Mar 22, 2018 | Signed as free agent | Adrian De Horta | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Adrian De Horta to a minor league contract. |
| Mar 21, 2018 | Signed as free agent | Alex Cobb | — | Baltimore Orioles | Baltimore Orioles signed free agent Alex Cobb. |
| Mar 21, 2018 | Trade | Eliezer Álvarez | Philadelphia Phillies | Texas Rangers | Philadelphia Phillies traded 2B Eliezer Alvarez to Texas Rangers for cash. |
| Mar 21, 2018 | Trade | Sam Gaviglio | Kansas City Royals | Toronto Blue Jays | Kansas City Royals traded RHP Sam Gaviglio to Toronto Blue Jays for Player To Be Named Later. |
| Mar 21, 2018 | Signed as free agent | Ruben Monegro | — | New York Mets | New York Mets signed free agent SS Ruben Monegro to a minor league contract. |
| Mar 21, 2018 | Released | Fernando Abad | — | Philadelphia Phillies | Philadelphia Phillies released LHP Fernando Abad. |
| Mar 21, 2018 | Trade | Robinson Leyer | Chicago White Sox | Cincinnati Reds | Chicago White Sox traded RHP Robinson Leyer to Cincinnati Reds. |
| Mar 21, 2018 | Signed as free agent | Marcos Reyes | — | Detroit Tigers | Detroit Tigers signed free agent RHP Marcos Reyes to a minor league contract. |
| Mar 21, 2018 | Signed as free agent | Mario Jerez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Mario Jerez to a minor league contract. |
| Mar 20, 2018 | Released | Antonio Bastardo | — | Arizona Diamondbacks | Arizona Diamondbacks released LHP Antonio Bastardo. |
| Mar 20, 2018 | Trade | Luis Rengifo | Tampa Bay Rays | Los Angeles Angels | Tampa Bay Rays traded 2B Luis Rengifo to Los Angeles Angels. |
| Mar 20, 2018 | Signed as free agent | Brett Anderson | — | Athletics | Oakland Athletics signed free agent LHP Brett Anderson to a minor league contract. |
| Mar 20, 2018 | Signed as free agent | Erik Goeddel | — | Seattle Mariners | Seattle Mariners signed free agent RHP Erik Goeddel to a minor league contract. |
| Mar 20, 2018 | Trade | Colin Rodgers | Kansas City Royals | Seattle Mariners | Kansas City Royals traded LHP Colin Rodgers to Seattle Mariners. |
| Mar 20, 2018 | Trade | Robby Rinn | Kansas City Royals | Minnesota Twins | Kansas City Royals traded 1B Robby Rinn to Minnesota Twins. |
| Mar 20, 2018 | Signed as free agent | Jose Gomez | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Jose Gomez to a minor league contract. |
| Mar 19, 2018 | Released | B.J. Upton | — | Cleveland Guardians | Cleveland Indians released LF Melvin Upton Jr.. |
| Mar 19, 2018 | Released | Ryan Hanigan | — | Cleveland Guardians | Cleveland Indians released C Ryan Hanigan. |
| Mar 19, 2018 | Signed as free agent | Trevor Cahill | — | Athletics | Oakland Athletics signed free agent Trevor Cahill. |
| Mar 19, 2018 | Signed as free agent | Isaias Ozoria | — | Boston Red Sox | Boston Red Sox signed free agent LHP Isaias Ozoria to a minor league contract. |
| Mar 19, 2018 | Signed as free agent | Martin Rodriguez | — | New York Mets | New York Mets signed free agent RHP Martin Rodriguez to a minor league contract. |
| Mar 19, 2018 | Released | Erik Goeddel | — | Texas Rangers | Texas Rangers released RHP Erik Goeddel. |
| Mar 18, 2018 | Released | Josh Thole | — | Arizona Diamondbacks | Arizona Diamondbacks released C Josh Thole. |
| Mar 18, 2018 | Signed as free agent | Justin Grimm | — | Kansas City Royals | Kansas City Royals signed free agent RHP Justin Grimm. |
| Mar 17, 2018 | Signed as free agent | Danny Espinosa | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Danny Espinosa to a minor league contract and invited him to spring training. |
| Mar 17, 2018 | Trade | Eric Jagielo | Cincinnati Reds | Miami Marlins | Cincinnati Reds traded 1B Eric Jagielo to Miami Marlins. |
| Mar 17, 2018 | Signed as free agent | Sean Burnett | — | Miami Marlins | Miami Marlins signed free agent LHP Sean Burnett to a minor league contract. |
| Mar 17, 2018 | Signed as free agent | Jeremy Hellickson | — | Washington Nationals | Washington Nationals signed free agent RHP Jeremy Hellickson to a minor league contract and invited him to spring training. |
| Mar 16, 2018 | Signed as free agent | Granden Goetzman | — | St. Louis Cardinals | St. Louis Cardinals signed free agent LF Granden Goetzman to a minor league contract. |
| Mar 16, 2018 | Trade | Luis Gil | Minnesota Twins | New York Yankees | Minnesota Twins traded RHP Luis Gil to New York Yankees for CF Jake Cave. |
| Mar 16, 2018 | Signed as free agent | Aníbal Sánchez | — | Atlanta Braves | Atlanta Braves signed free agent RHP Anibal Sanchez to a minor league contract and invited him to spring training. |
| Mar 16, 2018 | Signed as free agent | Jorge Solano | — | Seattle Mariners | Seattle Mariners signed free agent OF Jorge Solano to a minor league contract. |
| Mar 16, 2018 | Signed as free agent | Johsson Arias | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Johsson Arias to a minor league contract. |
| Mar 16, 2018 | Signed as free agent | Oscar Brito | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Oscar Brito to a minor league contract. |
| Mar 16, 2018 | Signed as free agent | Bryam Pena | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Bryam Pena to a minor league contract. |
| Mar 15, 2018 | Signed as free agent | Nestor Molina | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Nestor Molina to a minor league contract. |
| Mar 15, 2018 | Signed as free agent | Edward Mujica | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Edward Mujica to a minor league contract. |
| Mar 15, 2018 | Released | Justin Grimm | — | Chicago Cubs | Chicago Cubs released RHP Justin Grimm. |
| Mar 15, 2018 | Signed as free agent | Josh A. Smith | — | Seattle Mariners | Seattle Mariners signed free agent RHP Josh Smith to a minor league contract. |
| Mar 15, 2018 | Signed as free agent | Edinso Aleman | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Edinso Aleman to a minor league contract. |
| Mar 15, 2018 | Signed as free agent | Jerrick Francees | — | Chicago White Sox | Chicago White Sox signed free agent 2B Jerrick Francees to a minor league contract. |
| Mar 15, 2018 | Signed as free agent | Giovanny Alfonzo | — | New York Mets | New York Mets signed free agent SS Giovanny Alfonzo to a minor league contract. |
| Mar 15, 2018 | Signed as free agent | Gabriel Vilera | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Gabriel Vilera to a minor league contract. |
| Mar 14, 2018 | Released | Adam Lind | — | New York Yankees | New York Yankees released 1B Adam Lind. |
| Mar 14, 2018 | Released | Jairo Labourt | — | Athletics | Oakland Athletics released LHP Jairo Labourt. |
| Mar 14, 2018 | Signed as free agent | Jose Cedeno | — | Philadelphia Phillies | Philadelphia Phillies signed free agent OF Jose Cedeno to a minor league contract. |
| Mar 14, 2018 | Signed as free agent | Zach Lee | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Zach Lee to a minor league contract. |
| Mar 14, 2018 | Signed as free agent | Pedro Padilla | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Pedro Padilla to a minor league contract. |
| Mar 14, 2018 | Signed as free agent | Jim Henderson | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Jim Henderson to a minor league contract. |
| Mar 13, 2018 | Signed as free agent | Tim Berry | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Tim Berry to a minor league contract. |
| Mar 13, 2018 | Signed as free agent | Hunter Cervenka | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Hunter Cervenka to a minor league contract. |
| Mar 13, 2018 | Signed as free agent | Arturo De Freitas | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Arturo De Freitas to a minor league contract. |
| Mar 12, 2018 | Signed as free agent | Jonathan Lucroy | — | Athletics | Oakland Athletics signed free agent C Jonathan Lucroy. |
| Mar 12, 2018 | Signed as free agent | Lance Lynn | — | Minnesota Twins | Minnesota Twins signed free agent RHP Lance Lynn. |
| Mar 12, 2018 | Signed as free agent | Neil Walker | — | New York Yankees | New York Yankees signed free agent 1B Neil Walker. |
| Mar 12, 2018 | Signed as free agent | Jake Arrieta | — | Philadelphia Phillies | Philadelphia Phillies signed free agent Jake Arrieta. |
| Mar 12, 2018 | Released | Danny Espinosa | — | New York Yankees | New York Yankees released SS Danny Espinosa. |
| Mar 12, 2018 | Signed as free agent | Carlos González | — | Colorado Rockies | Colorado Rockies signed free agent RF Carlos Gonzalez. |
| Mar 12, 2018 | Released | Mark Lowe | — | Los Angeles Dodgers | Los Angeles Dodgers released RHP Mark Lowe. |
| Mar 12, 2018 | Signed as free agent | Igor Januario | — | Seattle Mariners | Seattle Mariners signed free agent RHP Igor Januario to a minor league contract. |
| Mar 12, 2018 | Signed as free agent | Ezequiel Carrera | — | Atlanta Braves | Atlanta Braves signed free agent LF Ezequiel Carrera to a minor league contract and invited him to spring training. |
| Mar 12, 2018 | Signed as free agent | Saul Fortuna | — | Tampa Bay Rays | Tampa Bay Rays signed free agent CF Saul Fortuna to a minor league contract. |
| Mar 12, 2018 | Signed as free agent | Jared Foster | — | Minnesota Twins | Minnesota Twins signed free agent CF Jared Foster to a minor league contract. |
| Mar 11, 2018 | Released | Aníbal Sánchez | — | Minnesota Twins | Minnesota Twins released RHP Anibal Sanchez. |
| Mar 11, 2018 | Released | Ezequiel Carrera | — | Toronto Blue Jays | Toronto Blue Jays released LF Ezequiel Carrera. |
| Mar 10, 2018 | Signed | Mike Moustakas | — | Kansas City Royals | Kansas City Royals signed 3B Mike Moustakas. |
| Mar 10, 2018 | Signed as free agent | Luis Mendez | — | Texas Rangers | Texas Rangers signed free agent 2B Luis Mendez to a minor league contract. |
| Mar 10, 2018 | Released | Tony Zych | — | Seattle Mariners | Seattle Mariners released RHP Tony Zych. |
| Mar 10, 2018 | Signed as free agent | Wilkelma Castillo | — | San Francisco Giants | San Francisco Giants signed free agent RHP Wilkelma Castillo to a minor league contract. |
| Mar 10, 2018 | Signed as free agent | Edgar Navarro | — | Chicago White Sox | Chicago White Sox signed free agent RHP Edgar Navarro to a minor league contract. |
| Mar 9, 2018 | Signed as free agent | Jarrod Saltalamacchia | — | Detroit Tigers | Detroit Tigers signed free agent C Jarrod Saltalamacchia to a minor league contract and invited him to spring training. |
| Mar 9, 2018 | Released | Willy García | — | Chicago White Sox | Chicago White Sox released RF Willy Garcia. |
| Mar 9, 2018 | Signed as free agent | Wilger Camacho | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Wilger Camacho to a minor league contract. |
| Mar 9, 2018 | Signed as free agent | Fernando Gallegos | — | New York Mets | New York Mets signed free agent RHP Fernando Gallegos to a minor league contract. |
| Mar 9, 2018 | Signed as free agent | Carlos Campos | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Carlos Campos to a minor league contract. |
| Mar 9, 2018 | Signed as free agent | Miguel Diaz | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Miguel Diaz to a minor league contract. |
| Mar 9, 2018 | Signed as free agent | Starlyn Reynoso | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Starlyn Reynoso to a minor league contract. |
| Mar 9, 2018 | Signed as free agent | Yoyner Fajardo | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent IF Yoyner Fajardo to a minor league contract. |
| Mar 9, 2018 | Signed as free agent | Stiwatt Valerio | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Stiwatt Valerio to a minor league contract. |
| Mar 9, 2018 | Signed as free agent | Nelson Roberto | — | Minnesota Twins | Minnesota Twins signed free agent CF Nelson Roberto to a minor league contract. |
| Mar 9, 2018 | Signed as free agent | Jesus Valles | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Jesus Valles to a minor league contract. |
| Mar 9, 2018 | Signed as free agent | Julio Rodriguez | — | San Francisco Giants | San Francisco Giants signed free agent RHP Julio Rodriguez to a minor league contract. |
| Mar 8, 2018 | Signed as free agent | Carlos Duran | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Carlos Duran to a minor league contract. |
| Mar 8, 2018 | Signed as free agent | Oscar Echarry | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Oscar Echarry to a minor league contract. |
| Mar 8, 2018 | Signed as free agent | Jose Ramirez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Jose Ramirez to a minor league contract. |
| Mar 8, 2018 | Signed as free agent | Ivan Castillo | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 3B Ivan Castillo to a minor league contract. |
| Mar 8, 2018 | Signed as free agent | Nestor Heredia | — | Chicago Cubs | Chicago Cubs signed free agent IF Nestor Heredia to a minor league contract. |
| Mar 7, 2018 | Signed as free agent | Tim Lincecum | — | Texas Rangers | Texas Rangers signed free agent RHP Tim Lincecum. |
| Mar 7, 2018 | Signed as free agent | Tyler Clippard | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Tyler Clippard to a minor league contract and invited him to spring training. |
| Mar 7, 2018 | Signed as free agent | Ichiro Suzuki | — | Seattle Mariners | Seattle Mariners signed free agent RF Ichiro Suzuki. |
| Mar 7, 2018 | Signed as free agent | Ricky Nolasco | — | Kansas City Royals | Kansas City Royals signed free agent RHP Ricky Nolasco to a minor league contract and invited him to spring training. |
| Mar 7, 2018 | Signed as free agent | Carlos Frías | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Carlos Frias to a minor league contract. |
| Mar 7, 2018 | Signed as free agent | Manuel Urias | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Manuel Urias to a minor league contract. |
| Mar 7, 2018 | Signed as free agent | Marcelo Martinez | — | Kansas City Royals | Kansas City Royals signed free agent LHP Marcelo Martinez to a minor league contract. |
| Mar 7, 2018 | Signed as free agent | Nonato Valdez | — | Atlanta Braves | Atlanta Braves signed free agent RHP Nonato Valdez to a minor league contract. |
| Mar 6, 2018 | Released | Brandon Moss | — | Athletics | Oakland Athletics released DH Brandon Moss. |
| Mar 6, 2018 | Signed as free agent | Jon Jay | — | Kansas City Royals | Kansas City Royals signed free agent LF Jon Jay. |
| Mar 6, 2018 | Signed as free agent | J.P. Martínez | — | Texas Rangers | Texas Rangers signed free agent CF Julio Pablo Martinez to a minor league contract. |
| Mar 6, 2018 | Signed as free agent | Beau Amaral | — | Seattle Mariners | Seattle Mariners signed free agent OF Beau Amaral to a minor league contract. |
| Mar 6, 2018 | Signed as free agent | Brayan Mancilla | — | Chicago Cubs | Chicago Cubs signed free agent C Brayan Mancilla to a minor league contract. |
| Mar 6, 2018 | Signed as free agent | Abrahan Gutierrez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Abrahan Gutierrez to a minor league contract. |
| Mar 5, 2018 | Trade | Ryan Schimpf | Tampa Bay Rays | Atlanta Braves | Tampa Bay Rays traded 3B Ryan Schimpf to Atlanta Braves for cash. |
| Mar 5, 2018 | Signed as free agent | Anthony Recker | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Anthony Recker to a minor league contract and invited him to spring training. |
| Mar 5, 2018 | Signed as free agent | Justin Martinez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Justin Martinez to a minor league contract. |
| Mar 5, 2018 | Signed as free agent | Yordy Guaba | — | Kansas City Royals | Kansas City Royals signed free agent RHP Yordy Guaba to a minor league contract. |
| Mar 5, 2018 | Signed as free agent | Taylor Cole | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Taylor Cole to a minor league contract. |
| Mar 5, 2018 | Signed as free agent | Luis Ramos | — | Chicago Cubs | Chicago Cubs signed free agent RHP Luis Ramos to a minor league contract. |
| Mar 4, 2018 | Signed as free agent | Jeff Ames | — | Washington Nationals | Washington Nationals signed free agent RHP Jeff Ames to a minor league contract. |
| Mar 4, 2018 | Signed as free agent | Emilio Marquez | — | Kansas City Royals | Kansas City Royals signed free agent LHP Emilio Marquez to a minor league contract. |
| Mar 3, 2018 | Signed as free agent | Nick Tepesch | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Nick Tepesch to a minor league contract. |
| Mar 3, 2018 | Signed as free agent | Danny Valencia | — | Baltimore Orioles | Baltimore Orioles signed free agent 1B Danny Valencia to a minor league contract and invited him to spring training. |
| Mar 3, 2018 | Signed as free agent | Carlos Gómez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RF Carlos Gomez. |
| Mar 3, 2018 | Signed as free agent | Luinder Avila | — | Kansas City Royals | Kansas City Royals signed free agent RHP Luinder Avila to a minor league contract. |
| Mar 3, 2018 | Signed as free agent | Alvaro Leal | — | Boston Red Sox | Boston Red Sox signed free agent P Alvaro Leal to a minor league contract. |
| Mar 3, 2018 | Signed as free agent | Anderson Acevedo | — | Chicago Cubs | Chicago Cubs signed free agent RHP Anderson Acevedo to a minor league contract. |
| Mar 2, 2018 | Signed as free agent | Adam Lind | — | New York Yankees | New York Yankees signed free agent 1B Adam Lind to a minor league contract and invited him to spring training. |
| Mar 2, 2018 | Signed as free agent | Jesus Hernandez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent C Jesus Hernandez to a minor league contract. |
| Mar 2, 2018 | Signed as free agent | Devin Malone | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Devin Malone to a minor league contract. |
| Mar 2, 2018 | Signed as free agent | John Richy | — | Seattle Mariners | Seattle Mariners signed free agent RHP John Richy to a minor league contract. |
| Mar 2, 2018 | Signed as free agent | Cortland Cox | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Cortland Cox to a minor league contract. |
| Mar 2, 2018 | Signed as free agent | Allen Webster | — | Chicago Cubs | Chicago Cubs signed free agent RHP Allen Webster to a minor league contract. |
| Mar 2, 2018 | Signed as free agent | Julio Guante | — | Chicago Cubs | Chicago Cubs signed free agent RHP Julio Guante to a minor league contract. |
| Mar 2, 2018 | Signed as free agent | Patricio Diaz | — | New York Mets | New York Mets signed free agent OF Patricio Diaz to a minor league contract. |
| Mar 2, 2018 | Signed as free agent | Hector Garcia | — | Chicago Cubs | Chicago Cubs signed free agent LHP Hector Garcia to a minor league contract. |
| Mar 1, 2018 | Signed as free agent | Adrian Aybar | — | New York Mets | New York Mets signed free agent RHP Adrian Aybar to a minor league contract. |
| Mar 1, 2018 | Signed as free agent | Gustavo Frontado | — | Colorado Rockies | Colorado Rockies signed free agent RHP Gustavo Frontado to a minor league contract. |
| Mar 1, 2018 | Signed as free agent | Michael Martinez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Michael Martinez to a minor league contract. |
| Mar 1, 2018 | Signed as free agent | Jesus Dominguez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Jesus Dominguez to a minor league contract. |
| Mar 1, 2018 | Signed as free agent | Andy Pages | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Andy Pages to a minor league contract. |
| Feb 28, 2018 | Signed as free agent | Mike Napoli | — | Cleveland Guardians | Cleveland Indians signed free agent 1B Mike Napoli to a minor league contract and invited him to spring training. |
| Feb 28, 2018 | Trade | Domingo Pena | Texas Rangers | Kansas City Royals | Texas Rangers traded and RHP Domingo Pena to Kansas City Royals. |
| Feb 28, 2018 | Signed as free agent | Lucas Duda | — | Kansas City Royals | Kansas City Royals signed free agent 1B Lucas Duda. |
| Feb 28, 2018 | Signed as free agent | Logan Morrison | — | Minnesota Twins | Minnesota Twins signed free agent 1B Logan Morrison. |
| Feb 28, 2018 | Signed as free agent | Maiker Galea | — | Detroit Tigers | Detroit Tigers signed free agent RHP Maiker Galea to a minor league contract. |
| Feb 28, 2018 | Signed as free agent | Edwin Peralta | — | Chicago White Sox | Chicago White Sox signed free agent 3B Edwin Peralta to a minor league contract. |
| Feb 28, 2018 | Signed as free agent | Luis Tena | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Luis Tena to a minor league contract. |
| Feb 28, 2018 | Signed as free agent | Jherson Pereira | — | Houston Astros | Houston Astros signed free agent RHP Jherson Pereira to a minor league contract. |
| Feb 28, 2018 | Signed as free agent | Cole Gillespie | — | San Diego Padres | San Diego Padres signed free agent OF Cole Gillespie to a minor league contract. |
| Feb 27, 2018 | Signed as free agent | Jose Rodriguez | — | Washington Nationals | Washington Nationals signed free agent RHP Jose Rodriguez to a minor league contract. |
| Feb 26, 2018 | Signed as free agent | J.D. Martinez | — | Boston Red Sox | Boston Red Sox signed free agent LF J.D. Martinez. |
| Feb 26, 2018 | Signed as free agent | Pedro Álvarez | — | Baltimore Orioles | Baltimore Orioles signed free agent 1B Pedro Alvarez to a minor league contract and invited him to spring training. |
| Feb 26, 2018 | Signed as free agent | Seunghwan Oh | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Seunghwan Oh. |
| Feb 26, 2018 | Signed as free agent | Ben Revere | — | Cincinnati Reds | Cincinnati Reds signed free agent LF Ben Revere to a minor league contract and invited him to spring training. |
| Feb 26, 2018 | Signed as free agent | Jose Guzman | — | Los Angeles Angels | Los Angeles Angels signed free agent SS Jose Guzman to a minor league contract. |
| Feb 26, 2018 | Signed as free agent | Angel Obando | — | New York Yankees | New York Yankees signed free agent RHP Angel Obando to a minor league contract. |
| Feb 26, 2018 | Signed as free agent | Nehemias Lopez | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Nehemias Lopez to a minor league contract. |
| Feb 26, 2018 | Signed as free agent | Geison Nunez | — | Los Angeles Angels | Los Angeles Angels signed free agent C Geison Nunez to a minor league contract. |
| Feb 25, 2018 | Signed as free agent | Tony Sanchez | — | Cincinnati Reds | Cincinnati Reds signed free agent C Tony Sanchez to a minor league contract. |
| Feb 25, 2018 | Signed as free agent | Casey Kelly | — | San Francisco Giants | San Francisco Giants signed free agent RHP Casey Kelly to a minor league contract. |
| Feb 25, 2018 | Signed as free agent | Adam Loewen | — | Texas Rangers | Texas Rangers signed free agent LHP Adam Loewen to a minor league contract. |
| Feb 25, 2018 | Signed as free agent | Matt Tracy | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Matt Tracy to a minor league contract. |
| Feb 25, 2018 | Signed as free agent | Rocky Gale | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Rocky Gale to a minor league contract and invited him to spring training. |
| Feb 25, 2018 | Signed as free agent | Leonardo Pestana | — | New York Yankees | New York Yankees signed free agent RHP Leonardo Pestana to a minor league contract. |
| Feb 24, 2018 | Signed as free agent | Kevin Siegrist | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Kevin Siegrist to a minor league contract and invited him to spring training. |
| Feb 24, 2018 | Signed as free agent | Oliver Pérez | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Oliver Perez to a minor league contract and invited him to spring training. |
| Feb 24, 2018 | Signed as free agent | Matt Tomshaw | — | Chicago White Sox | Chicago White Sox signed free agent LHP Matt Tomshaw to a minor league contract. |
| Feb 24, 2018 | Signed as free agent | Diego Goris | — | Chicago White Sox | Chicago White Sox signed free agent 1B Diego Goris to a minor league contract. |
| Feb 24, 2018 | Signed as free agent | Junior Franco | — | Colorado Rockies | Colorado Rockies signed free agent RHP Junior Franco to a minor league contract. |
| Feb 24, 2018 | Signed as free agent | Tommy Layne | — | Boston Red Sox | Boston Red Sox signed free agent LHP Tommy Layne to a minor league contract. |
| Feb 24, 2018 | Signed as free agent | Julio Carreras | — | Colorado Rockies | Colorado Rockies signed free agent SS Julio Carreras to a minor league contract. |
| Feb 24, 2018 | Signed as free agent | Enmanuel De Los Santos | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Enmanuel De Los Santos to a minor league contract. |
| Feb 24, 2018 | Signed as free agent | Petter Caty | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Petter Caty to a minor league contract. |
| Feb 24, 2018 | Signed as free agent | Johan Lopez | — | Detroit Tigers | Detroit Tigers signed free agent RHP Johan Lopez to a minor league contract. |
| Feb 24, 2018 | Signed as free agent | Roaldo Carvajal | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Roaldo Carvajal to a minor league contract. |
| Feb 24, 2018 | Signed as free agent | Carlos Goris | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent CF Carlos Goris to a minor league contract. |
| Feb 23, 2018 | Signed as free agent | Jesse Chavez | — | Texas Rangers | Texas Rangers signed free agent RHP Jesse Chavez. |
| Feb 23, 2018 | Signed as free agent | Francisco Liriano | — | Detroit Tigers | Detroit Tigers signed free agent LHP Francisco Liriano. |
| Feb 23, 2018 | Released | Michael Saunders | — | Pittsburgh Pirates | Pittsburgh Pirates released RF Michael Saunders. |
| Feb 23, 2018 | Released | Williams Pérez | — | Chicago Cubs | Chicago Cubs released RHP Williams Perez. |
| Feb 23, 2018 | Signed as free agent | Rafael Feliz | — | Minnesota Twins | Minnesota Twins signed free agent RHP Rafael Feliz to a minor league contract. |
| Feb 23, 2018 | Signed as free agent | Bryant Perez | — | Minnesota Twins | Minnesota Twins signed free agent RHP Bryant Perez to a minor league contract. |
| Feb 23, 2018 | Signed as free agent | Erick Aybar | — | Minnesota Twins | Minnesota Twins signed free agent SS Erick Aybar to a minor league contract and invited him to spring training. |
| Feb 23, 2018 | Signed as free agent | Louis Coleman | — | Detroit Tigers | Detroit Tigers signed free agent RHP Louis Coleman to a minor league contract. |
| Feb 23, 2018 | Signed as free agent | Jose Alejandro | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Jose Alejandro to a minor league contract. |
| Feb 23, 2018 | Signed as free agent | Moises Nolasco | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Moises Nolasco to a minor league contract. |
| Feb 23, 2018 | Signed as free agent | Diogenes Almengo | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Diogenes Almengo to a minor league contract. |
| Feb 22, 2018 | Signed as free agent | Carlos Torres | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Carlos Torres to a minor league contract and invited him to spring training. |
| Feb 22, 2018 | Trade | Corey Dickerson | Tampa Bay Rays | Pittsburgh Pirates | Tampa Bay Rays traded LF Corey Dickerson to Pittsburgh Pirates for RHP Daniel Hudson, 2B Tristan Gray and cash. |
| Feb 22, 2018 | Signed as free agent | Shane Robinson | — | New York Yankees | New York Yankees signed free agent CF Shane Robinson to a minor league contract and invited him to spring training. |
| Feb 22, 2018 | Released | Rocky Gale | — | San Diego Padres | San Diego Padres released C Rocky Gale. |
| Feb 22, 2018 | Signed as free agent | Heylin Taveras | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Heylin Taveras to a minor league contract. |
| Feb 22, 2018 | Signed as free agent | Euclides Lopez | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Euclides Lopez to a minor league contract. |
| Feb 22, 2018 | Signed as free agent | Juan Contreras | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Juan Contreras to a minor league contract. |
| Feb 21, 2018 | Signed as free agent | Cameron Maybin | — | Miami Marlins | Miami Marlins signed free agent LF Cameron Maybin. |
| Feb 21, 2018 | Signed as free agent | Chris Tillman | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Chris Tillman. |
| Feb 21, 2018 | Signed as free agent | Joaquín Benoit | — | Washington Nationals | Washington Nationals signed free agent RHP Joaquin Benoit. |
| Feb 21, 2018 | Trade | Miguel Medrano | Texas Rangers | Cincinnati Reds | Texas Rangers traded RHP Miguel Medrano to Cincinnati Reds for Future Considerations. |
| Feb 21, 2018 | Signed as free agent | Michael Saunders | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RF Michael Saunders to a minor league contract and invited him to spring training. |
| Feb 21, 2018 | Signed as free agent | Colby Rasmus | — | Baltimore Orioles | Baltimore Orioles signed free agent LF Colby Rasmus to a minor league contract and invited him to spring training. |
| Feb 21, 2018 | Trade | Jabari Blash | New York Yankees | Los Angeles Angels | New York Yankees traded RF Jabari Blash to Los Angeles Angels for Player To Be Named Later. |
| Feb 21, 2018 | Signed as free agent | Francis Franco | — | Seattle Mariners | Seattle Mariners signed free agent SS Francis Franco to a minor league contract. |
| Feb 21, 2018 | Signed as free agent | Fabricio Macias | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LF Fabricio Macias to a minor league contract. |
| Feb 21, 2018 | Released | Trevor Plouffe | — | Texas Rangers | Texas Rangers released 3B Trevor Plouffe. |
| Feb 20, 2018 | Signed as free agent | Aníbal Sánchez | — | Minnesota Twins | Minnesota Twins signed free agent RHP Anibal Sanchez. |
| Feb 20, 2018 | Trade | Bryce Brentz | Boston Red Sox | Pittsburgh Pirates | Boston Red Sox traded LF Bryce Brentz to Pittsburgh Pirates for cash. |
| Feb 20, 2018 | Released | Joan Gregorio | — | San Francisco Giants | San Francisco Giants released RHP Joan Gregorio. |
| Feb 20, 2018 | Trade | Steven Souza Jr. | Tampa Bay Rays | Arizona Diamondbacks | Arizona Diamondbacks Traded 3B Brandon Drury to New York Yankees; New York Yankees Traded Taylor Widener to Arizona Diamondbacks; New York Yankees Traded Nick Solak to Tampa Bay Rays; Tampa Bay Rays Traded RF Steven Souza Jr. to Arizona Diamondbacks and Arizona Diamondbacks Traded LHP Anthony Banda and Player To Be Named Later to Tampa Bay Rays. |
| Feb 19, 2018 | Signed as free agent | Ben Rowen | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Ben Rowen to a minor league contract and invited him to spring training. |
| Feb 19, 2018 | Signed as free agent | Tony Watson | — | San Francisco Giants | San Francisco Giants signed free agent LHP Tony Watson. |
| Feb 19, 2018 | Signed as free agent | Peter Moylan | — | Atlanta Braves | Atlanta Braves signed free agent RHP Peter Moylan. |
| Feb 19, 2018 | Signed as free agent | Eric Hosmer | — | San Diego Padres | San Diego Padres signed free agent 1B Eric Hosmer. |
| Feb 19, 2018 | Signed as free agent | Jarrod Dyson | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RF Jarrod Dyson. |
| Feb 19, 2018 | Signed as free agent | Peter Bourjos | — | Chicago Cubs | Chicago Cubs signed free agent CF Peter Bourjos to a minor league contract and invited him to spring training. |
| Feb 19, 2018 | Signed as free agent | Alex Presley | — | Baltimore Orioles | Baltimore Orioles signed free agent RF Alex Presley to a minor league contract and invited him to spring training. |
| Feb 19, 2018 | Signed as free agent | Cristian Acosta | — | San Francisco Giants | San Francisco Giants signed free agent RHP Cristian Acosta to a minor league contract. |
| Feb 19, 2018 | Signed as free agent | Edward Barboza | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Edward Barboza to a minor league contract. |
| Feb 19, 2018 | Signed as free agent | Lizardy Dicent | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Lizardy Dicent to a minor league contract. |
| Feb 19, 2018 | Signed as free agent | Maikel Garrido | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Maikel Garrido to a minor league contract. |
| Feb 19, 2018 | Signed as free agent | Tyler Colvin | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LF Tyler Colvin to a minor league contract. |
| Feb 18, 2018 | Signed as free agent | Jason Vargas | — | New York Mets | New York Mets signed free agent LHP Jason Vargas. |
| Feb 18, 2018 | Signed as free agent | Eduardo Núñez | — | Boston Red Sox | Boston Red Sox signed free agent 2B Eduardo Nunez. |
| Feb 18, 2018 | Signed as free agent | Chris Carter | — | Los Angeles Angels | Los Angeles Angels signed free agent 1B Chris Carter to a minor league contract and invited him to spring training. |
| Feb 18, 2018 | Signed as free agent | Chris Young | — | Los Angeles Angels | Los Angeles Angels signed free agent RF Chris Young. |
| Feb 18, 2018 | Signed as free agent | Ismael Gomez | — | New York Yankees | New York Yankees signed free agent RHP Ismael Gomez to a minor league contract. |
| Feb 18, 2018 | Signed as free agent | Cesár Ramos | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Cesar Ramos to a minor league contract. |
| Feb 17, 2018 | Signed as free agent | Chase Utley | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 2B Chase Utley. |
| Feb 17, 2018 | Signed as free agent | Rajai Davis | — | Cleveland Guardians | Cleveland Indians signed free agent CF Rajai Davis to a minor league contract and invited him to spring training. |
| Feb 17, 2018 | Signed as free agent | Eric Campbell | — | Miami Marlins | Miami Marlins signed free agent 1B Eric Campbell to a minor league contract and invited him to spring training. |
| Feb 17, 2018 | Signed as free agent | Fernando Abad | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Fernando Abad to a minor league contract and invited him to spring training. |
| Feb 17, 2018 | Trade | C.J. Cron | Los Angeles Angels | Tampa Bay Rays | Los Angeles Angels traded 1B C.J. Cron to Tampa Bay Rays for Player To Be Named Later. |
| Feb 17, 2018 | Trade | Jake Odorizzi | Tampa Bay Rays | Minnesota Twins | Tampa Bay Rays traded RHP Jake Odorizzi to Minnesota Twins for SS Jermaine Palacios. |
| Feb 17, 2018 | Signed as free agent | Josue Fernandez | — | Chicago Cubs | Chicago Cubs signed free agent OF Josue Fernandez to a minor league contract. |
| Feb 17, 2018 | Signed as free agent | Johan Lopez | — | Chicago Cubs | Chicago Cubs signed free agent LHP Johan Lopez to a minor league contract. |
| Feb 17, 2018 | Signed as free agent | Willy Basil | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Willy Basil to a minor league contract. |
| Feb 17, 2018 | Signed as free agent | Kelly Dugan | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Kelly Dugan to a minor league contract. |
| Feb 17, 2018 | Signed as free agent | Alex Burg | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Alex Burg to a minor league contract. |
| Feb 16, 2018 | Signed as free agent | Wade Miley | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Wade Miley to a minor league contract and invited him to spring training. |
| Feb 16, 2018 | Signed as free agent | Shae Simmons | — | Chicago Cubs | Chicago Cubs signed free agent Shae Simmons. |
| Feb 16, 2018 | Signed as free agent | Edinson Volquez | — | Texas Rangers | Texas Rangers signed free agent RHP Edinson Volquez to a minor league contract and invited him to spring training. |
| Feb 16, 2018 | Signed as free agent | Chris Heisey | — | Minnesota Twins | Minnesota Twins signed free agent LF Chris Heisey to a minor league contract and invited him to spring training. |
| Feb 16, 2018 | Signed as free agent | Junior Lake | — | Seattle Mariners | Seattle Mariners signed free agent OF Junior Lake to a minor league contract. |
| Feb 16, 2018 | Signed as free agent | Raidel Orta | — | Chicago Cubs | Chicago Cubs signed free agent RHP Raidel Orta to a minor league contract. |
| Feb 15, 2018 | Signed as free agent | Ryan Hanigan | — | Cleveland Guardians | Cleveland Indians signed free agent C Ryan Hanigan to a minor league contract and invited him to spring training. |
| Feb 15, 2018 | Released | Jeff Manship | — | Cincinnati Reds | Cincinnati Reds released RHP Jeff Manship. |
| Feb 15, 2018 | Signed as free agent | Cliff Pennington | — | Cincinnati Reds | Cincinnati Reds signed free agent 2B Cliff Pennington to a minor league contract and invited him to spring training. |
| Feb 15, 2018 | Signed as free agent | Drew Hutchison | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Drew Hutchison to a minor league contract and invited him to spring training. |
| Feb 15, 2018 | Signed as free agent | Matthew den Dekker | — | New York Mets | New York Mets signed free agent LF Matthew den Dekker to a minor league contract and invited him to spring training. |
| Feb 15, 2018 | Signed as free agent | Jaime García | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Jaime Garcia. |
| Feb 15, 2018 | Signed as free agent | Nick Franklin | — | Milwaukee Brewers | Milwaukee Brewers signed free agent SS Nick Franklin to a minor league contract and invited him to spring training. |
| Feb 15, 2018 | Signed as free agent | Andrew Cashner | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Andrew Cashner. |
| Feb 15, 2018 | Signed as free agent | Ludwin Jimenez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Ludwin Jimenez to a minor league contract. |
| Feb 15, 2018 | Signed as free agent | Kevin Moreno | — | Chicago Cubs | Chicago Cubs signed free agent OF Kevin Moreno to a minor league contract. |
| Feb 15, 2018 | Signed as free agent | Fernando Villegas | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Fernando Villegas to a minor league contract. |
| Feb 15, 2018 | Signed as free agent | Hasuan Viera | — | Texas Rangers | Texas Rangers signed free agent OF Hasuan Viera to a minor league contract. |
| Feb 15, 2018 | Signed as free agent | A.J. Ellis | — | San Diego Padres | San Diego Padres signed free agent C A.J. Ellis to a minor league contract and invited him to spring training. |
| Feb 15, 2018 | Signed as free agent | Jason Motte | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Jason Motte to a minor league contract and invited him to spring training. |
| Feb 15, 2018 | Signed as free agent | J.D. Martin | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP J.D. Martin to a minor league contract. |
| Feb 14, 2018 | Signed as free agent | Yeral Casilla | — | Seattle Mariners | Seattle Mariners signed free agent OF Yeral Casilla to a minor league contract. |
| Feb 14, 2018 | Signed as free agent | Yeury Garcia | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Yeury Garcia to a minor league contract. |
| Feb 14, 2018 | Signed as free agent | Arturo Guerrero | — | Seattle Mariners | Seattle Mariners signed free agent CF Arturo Guerrero to a minor league contract. |
| Feb 14, 2018 | Signed as free agent | Daniel Martinez | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Daniel Martinez to a minor league contract. |
| Feb 14, 2018 | Signed as free agent | Wilfry Urena | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Wilfry Urena to a minor league contract. |
| Feb 14, 2018 | Released | Lisalverto Bonilla | — | Cleveland Guardians | Cleveland Indians released RHP Lisalverto Bonilla. |
| Feb 14, 2018 | Signed as free agent | Héctor Santiago | — | Chicago White Sox | Chicago White Sox signed free agent LHP Hector Santiago to a minor league contract and invited him to spring training. |
| Feb 14, 2018 | Signed as free agent | Chris Stewart | — | Atlanta Braves | Atlanta Braves signed free agent C Chris Stewart. |
| Feb 14, 2018 | Signed as free agent | Bud Norris | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Bud Norris. |
| Feb 13, 2018 | Signed as free agent | Yu Darvish | — | Chicago Cubs | Chicago Cubs signed free agent RHP Yu Darvish. |
| Feb 13, 2018 | Signed as free agent | Sergio Romo | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Sergio Romo. |
| Feb 13, 2018 | Signed as free agent | Derek Holland | — | San Francisco Giants | San Francisco Giants signed free agent LHP Derek Holland to a minor league contract and invited him to spring training. |
| Feb 13, 2018 | Signed as free agent | Francisco Benitez | — | Chicago White Sox | Chicago White Sox signed free agent RHP Francisco Benitez to a minor league contract. |
| Feb 13, 2018 | Signed as free agent | Johnabiell Laureano | — | Chicago White Sox | Chicago White Sox signed free agent CF Johnabiell Laureano to a minor league contract. |
| Feb 13, 2018 | Signed as free agent | José Rodríguez | — | Chicago White Sox | Chicago White Sox signed free agent SS Jose Rodriguez to a minor league contract. |
| Feb 13, 2018 | Signed as free agent | Kyle Bird | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LHP Kyle Bird to a minor league contract and invited him to spring training. |
| Feb 13, 2018 | Signed as free agent | Dean Kiekhefer | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Dean Kiekhefer to a minor league contract. |
| Feb 12, 2018 | Signed as free agent | Quintin Berry | — | Milwaukee Brewers | Milwaukee Brewers signed free agent CF Quintin Berry to a minor league contract. |
| Feb 12, 2018 | Signed as free agent | Craig Breslow | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Craig Breslow to a minor league contract and invited him to spring training. |
| Feb 12, 2018 | Trade | Matt Reynolds | New York Mets | Washington Nationals | New York Mets traded 3B Matt Reynolds to Washington Nationals for cash. |
| Feb 12, 2018 | Signed as free agent | Trevor Plouffe | — | Texas Rangers | Texas Rangers signed free agent 3B Trevor Plouffe to a minor league contract and invited him to spring training. |
| Feb 12, 2018 | Signed as free agent | Carlos Castellanos | — | New York Mets | New York Mets signed free agent LHP Carlos Castellanos to a minor league contract. |
| Feb 12, 2018 | Signed as free agent | Andres Parra | — | New York Mets | New York Mets signed free agent SS Andres Parra to a minor league contract. |
| Feb 12, 2018 | Signed as free agent | Jose Valerio | — | New York Mets | New York Mets signed free agent RHP Jose Valerio to a minor league contract. |
| Feb 12, 2018 | Signed as free agent | Braunny Munoz | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Brauny Munoz to a minor league contract. |
| Feb 12, 2018 | Signed as free agent | Juan Rojas | — | Boston Red Sox | Boston Red Sox signed free agent 3B Juan Rojas to a minor league contract. |
| Feb 12, 2018 | Signed as free agent | Wardquelin Vasquez | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Wardquelin Vasquez to a minor league contract. |
| Feb 12, 2018 | Signed as free agent | Austin Wright | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LHP Austin Wright to a minor league contract. |
| Feb 10, 2018 | Signed as free agent | Axsel Jimenez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Axsel Jimenez to a minor league contract. |
| Feb 10, 2018 | Signed as free agent | Hiram Burgos | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Hiram Burgos to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Josh Tols | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Josh Tols to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Daniel Nava | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LF Daniel Nava to a minor league contract and invited him to spring training. |
| Feb 9, 2018 | Signed as free agent | John Axford | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP John Axford to a minor league contract and invited him to spring training. |
| Feb 9, 2018 | Signed as free agent | Duany Gomez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Duany Gomez to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Miguel Lar | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Miguel Lar to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Abel Moya | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Abel Moya to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Robinson Parra | — | Boston Red Sox | Boston Red Sox signed free agent RHP Robinson Parra to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Oscar Rangel | — | Boston Red Sox | Boston Red Sox signed free agent C Oscar Rangel to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Albert Carrizo | — | New York Yankees | New York Yankees signed free agent RHP Albert Carrizo to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Thowar Martinez | — | New York Yankees | New York Yankees signed free agent RHP Thowar Martinez to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Silvio Moray | — | New York Yankees | New York Yankees signed free agent RHP Silvio Moray to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Carlos Moreno | — | New York Yankees | New York Yankees signed free agent SS Carlos Moreno to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Mario Morillo | — | New York Yankees | New York Yankees signed free agent C Mario Morillo to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Nicio Rodriguez | — | New York Yankees | New York Yankees signed free agent RHP Nicio Rodriguez to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Anthony Valenzuela | — | New York Yankees | New York Yankees signed free agent CF Anthony Valenzuela to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Collin Cowgill | — | Philadelphia Phillies | Philadelphia Phillies signed free agent CF Collin Cowgill to a minor league contract and invited him to spring training. |
| Feb 9, 2018 | Signed as free agent | Dustin McGowan | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Dustin McGowan to a minor league contract and invited him to spring training. |
| Feb 9, 2018 | Signed as free agent | David Holmberg | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP David Holmberg to a minor league contract. |
| Feb 9, 2018 | Signed as free agent | Irvin Villarroel | — | Boston Red Sox | Boston Red Sox signed free agent RHP Irvin Villarroel to a minor league contract. |
| Feb 8, 2018 | Signed as free agent | Jake Petricka | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Jake Petricka to a minor league contract and invited him to spring training. |
| Feb 8, 2018 | Signed as free agent | Stephen Fife | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Stephen Fife to a minor league contract and invited him to spring training. |
| Feb 8, 2018 | Signed as free agent | Xavier Cedeño | — | Chicago White Sox | Chicago White Sox signed free agent LHP Xavier Cedeno to a minor league contract and invited him to spring training. |
| Feb 8, 2018 | Signed as free agent | Jake Elmore | — | Chicago White Sox | Chicago White Sox signed free agent 2B Jake Elmore to a minor league contract and invited him to spring training. |
| Feb 8, 2018 | Signed as free agent | Jeanmar Gómez | — | Chicago White Sox | Chicago White Sox signed free agent RHP Jeanmar Gomez to a minor league contract and invited him to spring training. |
| Feb 8, 2018 | Signed as free agent | Bruce Rondón | — | Chicago White Sox | Chicago White Sox signed free agent RHP Bruce Rondon to a minor league contract and invited him to spring training. |
| Feb 8, 2018 | Signed as free agent | Ryan Flaherty | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 2B Ryan Flaherty to a minor league contract and invited him to spring training. |
| Feb 8, 2018 | Signed as free agent | Blaine Boyer | — | Kansas City Royals | Kansas City Royals signed free agent RHP Blaine Boyer to a minor league contract and invited him to spring training. |
| Feb 8, 2018 | Signed as free agent | Ryan Flaherty | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 2B Ryan Flaherty to a minor league contract. |
| Feb 8, 2018 | Signed as free agent | Jose Cabrera | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Jose Cabrera to a minor league contract. |
| Feb 7, 2018 | Signed as free agent | Todd Frazier | — | New York Mets | New York Mets signed free agent 3B Todd Frazier. |
| Feb 7, 2018 | Trade | Russell Wilson | Texas Rangers | New York Yankees | Texas Rangers traded 2B Russell Wilson to New York Yankees for Future Considerations. |
| Feb 7, 2018 | Signed as free agent | Osiris Castillo | — | Seattle Mariners | Seattle Mariners signed free agent SS Osiris Castillo to a minor league contract. |
| Feb 7, 2018 | Signed as free agent | Juan Crisp | — | New York Yankees | New York Yankees signed free agent C Juan Crisp to a minor league contract. |
| Feb 7, 2018 | Signed as free agent | Adam Moore | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Adam Moore to a minor league contract and invited him to spring training. |
| Feb 7, 2018 | Signed as free agent | Nick Noonan | — | Athletics | Oakland Athletics signed free agent 3B Nick Noonan to a minor league contract and invited him to spring training. |
| Feb 6, 2018 | Signed as free agent | Steve Selsky | — | Boston Red Sox | Boston Red Sox signed free agent Steve Selsky. |
| Feb 6, 2018 | Signed as free agent | Steve Selsky | — | Boston Red Sox | Boston Red Sox signed free agent OF Steve Selsky to a minor league contract and invited him to spring training. |
| Feb 6, 2018 | Signed as free agent | Claudio Mota | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Claudio Mota to a minor league contract. |
| Feb 6, 2018 | Signed as free agent | Dan Runzler | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LHP Dan Runzler to a minor league contract and invited him to spring training. |
| Feb 6, 2018 | Signed as free agent | Evan Scribner | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Evan Scribner to a minor league contract and invited him to spring training. |
| Feb 6, 2018 | Signed as free agent | Mitchell Osnowitz | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Mitchell Osnowitz to a minor league contract. |
| Feb 5, 2018 | Signed as free agent | Darwin Barney | — | Texas Rangers | Texas Rangers signed free agent 2B Darwin Barney to a minor league contract and invited him to spring training. |
| Feb 5, 2018 | Signed as free agent | Jeff Manship | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Jeff Manship to a minor league contract and invited him to spring training. |
| Feb 5, 2018 | Signed as free agent | Wanly Perez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Wanly Perez to a minor league contract. |
| Feb 5, 2018 | Signed as free agent | Tom Wilhelmsen | — | San Diego Padres | San Diego Padres signed free agent RHP Tom Wilhelmsen to a minor league contract and invited him to spring training. |
| Feb 5, 2018 | Signed as free agent | Nestor Oronel | — | New York Yankees | New York Yankees signed free agent LHP Nestor Oronel to a minor league contract. |
| Feb 4, 2018 | Signed as free agent | Bartolo Colon | — | Texas Rangers | Texas Rangers signed free agent RHP Bartolo Colon to a minor league contract and invited him to spring training. |
| Feb 3, 2018 | Signed as free agent | Estalin Ortiz | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Estalin Ortiz to a minor league contract. |
| Feb 3, 2018 | Signed as free agent | Vladimir Dilone | — | Colorado Rockies | Colorado Rockies signed free agent SS Vladimir Dilone to a minor league contract. |
| Feb 3, 2018 | Signed as free agent | Alexis Ramirez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Alexis Ramirez to a minor league contract. |
| Feb 3, 2018 | Signed as free agent | Joandris Tolentino | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Joandris Tolentino to a minor league contract. |
| Feb 2, 2018 | Trade | Andrew Susac | Milwaukee Brewers | Baltimore Orioles | Milwaukee Brewers traded C Andrew Susac to Baltimore Orioles for Player To Be Named Later. |
| Feb 2, 2018 | Signed as free agent | Ryne Harper | — | Minnesota Twins | Minnesota Twins signed free agent RHP Ryne Harper to a minor league contract. |
| Feb 2, 2018 | Signed as free agent | Luis Rodriguez | — | Chicago White Sox | Chicago White Sox signed free agent RHP Luis Rodriguez to a minor league contract. |
| Feb 2, 2018 | Signed as free agent | Jesus Rondon | — | Chicago White Sox | Chicago White Sox signed free agent RHP Jesus Rondon to a minor league contract. |
| Feb 2, 2018 | Signed as free agent | Jayson McKinley | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jayson McKinley to a minor league contract. |
| Feb 2, 2018 | Signed as free agent | Adron Chambers | — | Philadelphia Phillies | Philadelphia Phillies signed free agent OF Adron Chambers to a minor league contract. |
| Feb 2, 2018 | Signed as free agent | Raulin Celedonio | — | Atlanta Braves | Atlanta Braves signed free agent LHP Raulin Celedonio to a minor league contract. |
| Feb 1, 2018 | Signed as free agent | Adam Rosales | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Adam Rosales to a minor league contract and invited him to spring training. |
| Feb 1, 2018 | Signed as free agent | Andrés Blanco | — | San Francisco Giants | San Francisco Giants signed free agent 2B Andres Blanco to a minor league contract and invited him to spring training. |
| Feb 1, 2018 | Signed as free agent | Miguel Montero | — | Washington Nationals | Washington Nationals signed free agent C Miguel Montero to a minor league contract and invited him to spring training. |
| Feb 1, 2018 | Signed as free agent | Joey Meneses | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 1B Joey Meneses to a minor league contract. |
| Feb 1, 2018 | Signed as free agent | Elvis Araujo | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Elvis Araujo to a minor league contract. |
| Jan 31, 2018 | Trade | Daniel Zamora | Pittsburgh Pirates | New York Mets | Pittsburgh Pirates traded cash and LHP Daniel Zamora to New York Mets for LHP Josh Smoker. |
| Jan 31, 2018 | Signed as free agent | Alex Avila | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Alex Avila. |
| Jan 31, 2018 | Signed as free agent | Carlos Benua | — | Kansas City Royals | Kansas City Royals signed free agent RHP Carlos Benua to a minor league contract. |
| Jan 31, 2018 | Signed as free agent | Gabriel Gil | — | Colorado Rockies | Colorado Rockies signed free agent C Gabriel Gil to a minor league contract. |
| Jan 31, 2018 | Signed as free agent | Courtney Smith | — | Texas Rangers | Texas Rangers signed free agent C Courtney Smith to a minor league contract. |
| Jan 31, 2018 | Signed as free agent | Ellian Rondon | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Ellian Rondon to a minor league contract. |
| Jan 31, 2018 | Signed as free agent | Ian Krol | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Ian Krol to a minor league contract and invited him to spring training. |
| Jan 31, 2018 | Signed as free agent | Reid Brignac | — | Washington Nationals | Washington Nationals signed free agent SS Reid Brignac to a minor league contract and invited him to spring training. |
| Jan 31, 2018 | Signed as free agent | Xorge Carrillo | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Xorge Carrillo to a minor league contract and invited him to spring training. |
| Jan 31, 2018 | Signed as free agent | Efren Navarro | — | Chicago Cubs | Chicago Cubs signed free agent OF Efren Navarro to a minor league contract and invited him to spring training. |
| Jan 31, 2018 | Signed as free agent | Victor Roache | — | St. Louis Cardinals | St. Louis Cardinals signed free agent OF Victor Roache to a minor league contract. |
| Jan 31, 2018 | Signed as free agent | Nolan Becker | — | Kansas City Royals | Kansas City Royals signed free agent LHP Nolan Becker to a minor league contract. |
| Jan 31, 2018 | Signed as free agent | Jacob Condra-Bogan | — | Kansas City Royals | Kansas City Royals signed free agent RHP Jacob Condra-Bogan to a minor league contract. |
| Jan 30, 2018 | Signed as free agent | David Hernandez | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP David Hernandez. |
| Jan 30, 2018 | Signed as free agent | Matt Albers | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Matt Albers. |
| Jan 30, 2018 | Signed as free agent | Jonathon Niese | — | Texas Rangers | Texas Rangers signed free agent LHP Jonathon Niese to a minor league contract and invited him to spring training. |
| Jan 30, 2018 | Signed as free agent | Cruz Noriega | — | Kansas City Royals | Kansas City Royals signed free agent RHP Cruz Noriega to a minor league contract. |
| Jan 30, 2018 | Signed as free agent | Shane Opitz | — | Milwaukee Brewers | Milwaukee Brewers signed free agent SS Shane Opitz to a minor league contract. |
| Jan 29, 2018 | Signed as free agent | Alcides Escobar | — | Kansas City Royals | Kansas City Royals signed free agent SS Alcides Escobar. |
| Jan 29, 2018 | Signed as free agent | Travis Wood | — | Detroit Tigers | Detroit Tigers signed free agent LHP Travis Wood to a minor league contract and invited him to spring training. |
| Jan 29, 2018 | Signed as free agent | Neftalí Feliz | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Neftali Feliz to a minor league contract and invited him to spring training. |
| Jan 29, 2018 | Trade | Brandon Moss | Kansas City Royals | Athletics | Kansas City Royals traded DH Brandon Moss, LHP Ryan Buchter and cash to Oakland Athletics for RHP Heath Fillmyer and RHP Jesse Hahn. |
| Jan 29, 2018 | Signed as free agent | Daniel Figueroa | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Daniel Figueroa to a minor league contract. |
| Jan 29, 2018 | Signed as free agent | Danny Espinosa | — | New York Yankees | New York Yankees signed free agent SS Danny Espinosa to a minor league contract and invited him to spring training. |
| Jan 29, 2018 | Signed as free agent | David Hale | — | New York Yankees | New York Yankees signed free agent RHP David Hale to a minor league contract and invited him to spring training. |
| Jan 29, 2018 | Signed as free agent | Gabriel Noriega | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 3B Gabriel Noriega to a minor league contract. |
| Jan 29, 2018 | Signed as free agent | Dean Anna | — | Chicago White Sox | Chicago White Sox signed free agent SS Dean Anna to a minor league contract. |
| Jan 29, 2018 | Signed as free agent | Matt Lipka | — | San Francisco Giants | San Francisco Giants signed free agent OF Matt Lipka to a minor league contract. |
| Jan 29, 2018 | Signed as free agent | Wilson Garcia | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 1B Wilson Garcia to a minor league contract. |
| Jan 28, 2018 | Signed as free agent | Francisco Rodríguez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Francisco Rodriguez to a minor league contract and invited him to spring training. |
| Jan 28, 2018 | Signed as free agent | Cesar Camargo | — | Kansas City Royals | Kansas City Royals signed free agent RHP Cesar Camargo to a minor league contract. |
| Jan 27, 2018 | Signed as free agent | Mark Lowe | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Mark Lowe to a minor league contract and invited him to spring training. |
| Jan 27, 2018 | Signed as free agent | Hunter Jones | — | Washington Nationals | Washington Nationals signed free agent OF Hunter Jones to a minor league contract. |
| Jan 26, 2018 | Signed as free agent | Lorenzo Cain | — | Milwaukee Brewers | Milwaukee Brewers signed free agent CF Lorenzo Cain. |
| Jan 26, 2018 | Signed as free agent | Preston Claiborne | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Preston Claiborne to a minor league contract and invited him to spring training. |
| Jan 26, 2018 | Signed as free agent | José Reyes | — | New York Mets | New York Mets signed free agent 3B Jose Reyes. |
| Jan 26, 2018 | Trade | Engelb Vielma | San Francisco Giants | Baltimore Orioles | San Francisco Giants traded SS Engelb Vielma to Baltimore Orioles. |
| Jan 26, 2018 | Released | Wei-Chung Wang | — | Milwaukee Brewers | Milwaukee Brewers released LHP Wei-Chung Wang. |
| Jan 26, 2018 | Signed as free agent | Jose Cerda | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Jose Cerda to a minor league contract. |
| Jan 26, 2018 | Signed as free agent | Ty Kelly | — | New York Mets | New York Mets signed free agent 2B Ty Kelly to a minor league contract and invited him to spring training. |
| Jan 26, 2018 | Signed as free agent | Ryan Weber | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Ryan Weber to a minor league contract and invited him to spring training. |
| Jan 26, 2018 | Signed as free agent | Michael Roth | — | Chicago Cubs | Chicago Cubs signed free agent LHP Michael Roth to a minor league contract and invited him to spring training. |
| Jan 26, 2018 | Signed as free agent | Alexander Capriata | — | Seattle Mariners | Seattle Mariners signed free agent C Alexander Capriata to a minor league contract. |
| Jan 25, 2018 | Signed as free agent | Andy Wilkins | — | Minnesota Twins | Minnesota Twins signed free agent OF Andy Wilkins to a minor league contract. |
| Jan 25, 2018 | Signed as free agent | Matt Magill | — | Minnesota Twins | Minnesota Twins signed free agent RHP Matt Magill to a minor league contract. |
| Jan 25, 2018 | Signed as free agent | Al Alburquerque | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Al Alburquerque to a minor league contract and invited him to spring training. |
| Jan 25, 2018 | Signed as free agent | Rhiner Cruz | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Rhiner Cruz to a minor league contract and invited him to spring training. |
| Jan 25, 2018 | Signed as free agent | Joelvis Del Rosario | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Joelvis Del Rosario to a minor league contract. |
| Jan 25, 2018 | Trade | Isan Díaz | Milwaukee Brewers | Miami Marlins | Miami Marlins traded CF Christian Yelich to Milwaukee Brewers for CF Lewis Brinson, 2B Isan Diaz, CF Monte Harrison and RHP Jordan Yamamoto. |
| Jan 25, 2018 | Signed as free agent | Mariano Dotel | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent SS Mariano Dotel to a minor league contract. |
| Jan 25, 2018 | Signed as free agent | Gamaliel Gonzalez | — | Boston Red Sox | Boston Red Sox signed free agent C Gamaliel Gonzalez to a minor league contract. |
| Jan 25, 2018 | Signed as free agent | Valentin Linarez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Valentin Linarez to a minor league contract. |
| Jan 25, 2018 | Signed as free agent | Alen Hanson | — | San Francisco Giants | San Francisco Giants signed free agent 2B Alen Hanson to a minor league contract and invited him to spring training. |
| Jan 25, 2018 | Signed as free agent | Josh Rutledge | — | San Francisco Giants | San Francisco Giants signed free agent 3B Josh Rutledge to a minor league contract and invited him to spring training. |
| Jan 25, 2018 | Signed as free agent | Ryan Goins | — | Kansas City Royals | Kansas City Royals signed free agent SS Ryan Goins to a minor league contract and invited him to spring training. |
| Jan 25, 2018 | Signed as free agent | Ivan Pineyro | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Ivan Pineyro to a minor league contract. |
| Jan 25, 2018 | Signed as free agent | Unnamed | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Joelvis Del Rosario to a minor league contract. |
| Jan 24, 2018 | Signed as free agent | Matt West | — | Detroit Tigers | Detroit Tigers signed free agent RHP Matt West to a minor league contract. |
| Jan 24, 2018 | Signed as free agent | James Russell | — | Detroit Tigers | Detroit Tigers signed free agent LHP James Russell to a minor league contract. |
| Jan 24, 2018 | Signed as free agent | Caleb Thielbar | — | Detroit Tigers | Detroit Tigers signed free agent LHP Caleb Thielbar to a minor league contract. |
| Jan 24, 2018 | Signed as free agent | Alexi Amarista | — | Detroit Tigers | Detroit Tigers signed free agent SS Alexi Amarista to a minor league contract and invited him to spring training. |
| Jan 24, 2018 | Signed as free agent | Edgar Barrios | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent SS Edgar Barrios to a minor league contract. |
| Jan 24, 2018 | Signed as free agent | Johnny Monell | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Johnny Monell to a minor league contract and invited him to spring training. |
| Jan 24, 2018 | Signed as free agent | Carlos Romero | — | Miami Marlins | Miami Marlins signed free agent SS Carlos Romero to a minor league contract. |
| Jan 23, 2018 | Signed as free agent | Curtis Granderson | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LF Curtis Granderson. |
| Jan 22, 2018 | Signed as free agent | Ryan Lavarnway | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Ryan Lavarnway to a minor league contract and invited him to spring training. |
| Jan 22, 2018 | Signed as free agent | Brian Duensing | — | Chicago Cubs | Chicago Cubs signed free agent LHP Brian Duensing. |
| Jan 22, 2018 | Signed as free agent | Rob Scahill | — | Chicago White Sox | Chicago White Sox signed free agent RHP Rob Scahill to a minor league contract and invited him to spring training. |
| Jan 22, 2018 | Signed as free agent | Chris Volstad | — | Chicago White Sox | Chicago White Sox signed free agent RHP Chris Volstad to a minor league contract and invited him to spring training. |
| Jan 22, 2018 | Signed as free agent | Michael Ynoa | — | Chicago White Sox | Chicago White Sox signed free agent RHP Michael Ynoa to a minor league contract and invited him to spring training. |
| Jan 22, 2018 | Signed as free agent | TJ House | — | Chicago White Sox | Chicago White Sox signed free agent LHP TJ House to a minor league contract and invited him to spring training. |
| Jan 22, 2018 | Signed as free agent | Patrick Leonard | — | Chicago White Sox | Chicago White Sox signed free agent 3B Patrick Leonard to a minor league contract and invited him to spring training. |
| Jan 22, 2018 | Signed as free agent | Matt Skole | — | Chicago White Sox | Chicago White Sox signed free agent 1B Matt Skole to a minor league contract and invited him to spring training. |
| Jan 22, 2018 | Signed as free agent | Adam Wilk | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Adam Wilk to a minor league contract and invited him to spring training. |
| Jan 22, 2018 | Signed as free agent | Jack Murphy | — | Cleveland Guardians | Cleveland Indians signed free agent C Jack Murphy to a minor league contract and invited him to spring training. |
| Jan 22, 2018 | Signed as free agent | Austin Jackson | — | San Francisco Giants | San Francisco Giants signed free agent CF Austin Jackson. |
| Jan 22, 2018 | Signed as free agent | Yosmer Curbata | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Yosmer Curbata to a minor league contract. |
| Jan 22, 2018 | Signed as free agent | Logan Franco | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Logan Franco to a minor league contract. |
| Jan 22, 2018 | Signed as free agent | Jordi Martinez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Jordi Martinez to a minor league contract. |
| Jan 22, 2018 | Signed as free agent | Endry Manrique | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Endry Manrique to a minor league contract. |
| Jan 22, 2018 | Signed as free agent | Juan Zapata | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Juan Zapata to a minor league contract. |
| Jan 22, 2018 | Signed as free agent | Chris Gimenez | — | Chicago Cubs | Chicago Cubs signed free agent C Chris Gimenez to a minor league contract and invited him to spring training. |
| Jan 22, 2018 | Signed as free agent | Kris Medlen | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Kris Medlen to a minor league contract and invited him to spring training. |
| Jan 22, 2018 | Signed as free agent | John Lamb | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP John Lamb to a minor league contract and invited him to spring training. |
| Jan 22, 2018 | Signed as free agent | Allen Craig | — | San Diego Padres | San Diego Padres signed free agent OF Allen Craig to a minor league contract and invited him to spring training. |
| Jan 22, 2018 | Signed as free agent | C.J. McElroy | — | Cincinnati Reds | Cincinnati Reds signed free agent OF C.J. McElroy to a minor league contract. |
| Jan 21, 2018 | Signed as free agent | Michael Blazek | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Michael Blazek to a minor league contract and invited him to spring training. |
| Jan 21, 2018 | Signed as free agent | Antonio Bastardo | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Antonio Bastardo to a minor league contract and invited him to spring training. |
| Jan 20, 2018 | Signed as free agent | Linse Carvajal | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Linse Carvajal to a minor league contract. |
| Jan 20, 2018 | Signed as free agent | Robert Cruz | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Robert Cruz to a minor league contract. |
| Jan 20, 2018 | Signed as free agent | Oliver Mateo | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Oliver Mateo to a minor league contract. |
| Jan 20, 2018 | Signed as free agent | Hernando Mejia | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Hernando Mejia to a minor league contract. |
| Jan 20, 2018 | Signed as free agent | Yeison Ceballo | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Yeison Ceballo to a minor league contract. |
| Jan 20, 2018 | Signed as free agent | Samuel Vásquez | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Samuel Vasquez to a minor league contract. |
| Jan 20, 2018 | Signed as free agent | Miguel Peralta | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Miguel Peralta to a minor league contract. |
| Jan 20, 2018 | Signed as free agent | Deolis Guerra | — | Texas Rangers | Texas Rangers signed free agent RHP Deolis Guerra to a minor league contract and invited him to spring training. |
| Jan 20, 2018 | Signed as free agent | Fernando Salas | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Fernando Salas to a minor league contract and invited him to spring training. |
| Jan 20, 2018 | Signed as free agent | Cody Satterwhite | — | Washington Nationals | Washington Nationals signed free agent RHP Cody Satterwhite to a minor league contract. |
| Jan 19, 2018 | Signed as free agent | Jermaine Curtis | — | Minnesota Twins | Minnesota Twins signed free agent LF Jermaine Curtis to a minor league contract. |
| Jan 19, 2018 | Signed as free agent | Omar Bencomo | — | Minnesota Twins | Minnesota Twins signed free agent RHP Omar Bencomo to a minor league contract. |
| Jan 19, 2018 | Trade | Dominic Leone | Toronto Blue Jays | St. Louis Cardinals | Toronto Blue Jays traded RHP Dominic Leone and RHP Conner Greene to St. Louis Cardinals for LF Randal Grichuk. |
| Jan 19, 2018 | Signed as free agent | Anderson Feliz | — | Baltimore Orioles | Baltimore Orioles signed free agent 3B Anderson Feliz to a minor league contract. |
| Jan 19, 2018 | Signed as free agent | Eddie Gamboa | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Eddie Gamboa to a minor league contract and invited him to spring training. |
| Jan 19, 2018 | Signed as free agent | Johnni Turbo | — | Baltimore Orioles | Baltimore Orioles signed free agent OF D'Arby Myers to a minor league contract. |
| Jan 19, 2018 | Signed as free agent | Audry Pérez | — | Baltimore Orioles | Baltimore Orioles signed free agent C Audry Perez to a minor league contract and invited him to spring training. |
| Jan 19, 2018 | Signed as free agent | Jonathan Rodríguez | — | Miami Marlins | Miami Marlins signed free agent 1B Jonathan Rodriguez to a minor league contract and invited him to spring training. |
| Jan 19, 2018 | Signed as free agent | Ernesto Frieri | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Ernesto Frieri to a minor league contract and invited him to spring training. |
| Jan 19, 2018 | Signed as free agent | Giovahniey German | — | Minnesota Twins | Minnesota Twins signed free agent RHP Giovahniey German to a minor league contract. |
| Jan 19, 2018 | Signed as free agent | Rafi Gonell | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Rafi Gonell to a minor league contract. |
| Jan 19, 2018 | Signed as free agent | Erick Pinales | — | Detroit Tigers | Detroit Tigers signed free agent RHP Erick Pinales to a minor league contract. |
| Jan 18, 2018 | Signed as free agent | Adrián González | — | New York Mets | New York Mets signed free agent 1B Adrian Gonzalez. |
| Jan 18, 2018 | Signed as free agent | Howie Kendrick | — | Washington Nationals | Washington Nationals signed free agent 2B Howie Kendrick. |
| Jan 18, 2018 | Signed as free agent | Engel Estevez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Engel Estevez to a minor league contract. |
| Jan 18, 2018 | Signed as free agent | Carlos Santana | — | New York Yankees | New York Yankees signed free agent RHP Carlos Santana to a minor league contract. |
| Jan 18, 2018 | Signed as free agent | Carlos A. Rodriguez | — | New York Yankees | New York Yankees signed free agent C Carlos Rodriguez to a minor league contract. |
| Jan 18, 2018 | Signed as free agent | Johan Rojas | — | Philadelphia Phillies | Philadelphia Phillies signed free agent OF Johan Rojas to a minor league contract. |
| Jan 18, 2018 | Signed as free agent | Curt Casali | — | Texas Rangers | Texas Rangers signed free agent C Curt Casali to a minor league contract and invited him to spring training. |
| Jan 18, 2018 | Signed as free agent | Zach Neal | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Zach Neal to a minor league contract and invited him to spring training. |
| Jan 18, 2018 | Signed as free agent | Donovan Solano | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 2B Donovan Solano to a minor league contract and invited him to spring training. |
| Jan 18, 2018 | Signed as free agent | Elvin Serrano | — | New York Yankees | New York Yankees signed free agent RHP Elvin Serrano to a minor league contract. |
| Jan 18, 2018 | Signed as free agent | Rafael Franco | — | Cincinnati Reds | Cincinnati Reds signed free agent OF Rafael Franco to a minor league contract. |
| Jan 17, 2018 | Trade | Shane Carle | Pittsburgh Pirates | Atlanta Braves | Pittsburgh Pirates traded RHP Shane Carle to Atlanta Braves. |
| Jan 17, 2018 | Signed as free agent | Felix Alonzo | — | New York Yankees | New York Yankees signed free agent RHP Felix Alonzo to a minor league contract. |
| Jan 17, 2018 | Signed as free agent | Yon Castro | — | New York Yankees | New York Yankees signed free agent RHP Yon Castro to a minor league contract. |
| Jan 17, 2018 | Signed as free agent | David Leiderman | — | Miami Marlins | Miami Marlins signed free agent 3B David Leiderman to a minor league contract. |
| Jan 17, 2018 | Signed as free agent | Sammy Tavarez | — | New York Yankees | New York Yankees signed free agent RHP Sammy Tavarez to a minor league contract. |
| Jan 17, 2018 | Signed as free agent | Madison Santos | — | New York Yankees | New York Yankees signed free agent CF Madison Santos to a minor league contract. |
| Jan 17, 2018 | Signed as free agent | Victor Santana | — | New York Yankees | New York Yankees signed free agent RHP Victor Santana to a minor league contract. |
| Jan 17, 2018 | Signed as free agent | Shawn Zarraga | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Shawn Zarraga to a minor league contract and invited him to spring training. |
| Jan 17, 2018 | Signed as free agent | Wade LeBlanc | — | New York Yankees | New York Yankees signed free agent LHP Wade LeBlanc to a minor league contract and invited him to spring training. |
| Jan 17, 2018 | Signed as free agent | Francisco Arcia | — | Los Angeles Angels | Los Angeles Angels signed free agent C Francisco Arcia to a minor league contract and invited him to spring training. |
| Jan 17, 2018 | Signed as free agent | Dylan Unsworth | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Dylan Unsworth to a minor league contract. |
| Jan 16, 2018 | Signed as free agent | Dan Butler | — | Boston Red Sox | Boston Red Sox signed free agent C Dan Butler to a minor league contract and invited him to spring training. |
| Jan 16, 2018 | Signed as free agent | Óscar Hernández | — | Boston Red Sox | Boston Red Sox signed free agent C Oscar Hernandez to a minor league contract and invited him to spring training. |
| Jan 16, 2018 | Signed as free agent | Iván De Jesús Jr. | — | Boston Red Sox | Boston Red Sox signed free agent 2B Ivan De Jesus Jr. to a minor league contract and invited him to spring training. |
| Jan 16, 2018 | Signed as free agent | Christian Bergman | — | Seattle Mariners | Seattle Mariners signed free agent RHP Christian Bergman to a minor league contract and invited him to spring training. |
| Jan 16, 2018 | Signed as free agent | Casey Lawrence | — | Seattle Mariners | Seattle Mariners signed free agent RHP Casey Lawrence to a minor league contract and invited him to spring training. |
| Jan 16, 2018 | Signed as free agent | Gordon Beckham | — | Seattle Mariners | Seattle Mariners signed free agent 2B Gordon Beckham to a minor league contract and invited him to spring training. |
| Jan 16, 2018 | Signed as free agent | Johendí Jiminian | — | Seattle Mariners | Seattle Mariners signed free agent RHP Johendi Jiminian to a minor league contract and invited him to spring training. |
| Jan 16, 2018 | Signed as free agent | Matt Hague | — | Seattle Mariners | Seattle Mariners signed free agent 1B Matt Hague to a minor league contract and invited him to spring training. |
| Jan 16, 2018 | Signed as free agent | Rey Navarro | — | Seattle Mariners | Seattle Mariners signed free agent 2B Rey Navarro to a minor league contract and invited him to spring training. |
| Jan 16, 2018 | Signed as free agent | John Andreoli | — | Seattle Mariners | Seattle Mariners signed free agent OF John Andreoli to a minor league contract and invited him to spring training. |
| Jan 16, 2018 | Signed as free agent | Kirk Nieuwenhuis | — | Seattle Mariners | Seattle Mariners signed free agent RF Kirk Nieuwenhuis to a minor league contract and invited him to spring training. |
| Jan 16, 2018 | Signed as free agent | Jay Bruce | — | New York Mets | New York Mets signed free agent RF Jay Bruce. |
| Jan 16, 2018 | Signed as free agent | Jesus Moreno | — | Texas Rangers | Texas Rangers signed free agent C Jesus Moreno to a minor league contract. |
| Jan 16, 2018 | Signed as free agent | Elbis Afanador | — | Seattle Mariners | Seattle Mariners signed free agent P Elbis Afanador to a minor league contract. |
| Jan 16, 2018 | Signed as free agent | Tyler Collins | — | Kansas City Royals | Kansas City Royals signed free agent OF Tyler Collins to a minor league contract and invited him to spring training. |
| Jan 16, 2018 | Signed as free agent | Clayton Mortensen | — | Kansas City Royals | Kansas City Royals signed free agent RHP Clayton Mortensen to a minor league contract. |
| Jan 15, 2018 | Signed as free agent | Addison Reed | — | Minnesota Twins | Minnesota Twins signed free agent RHP Addison Reed. |
| Jan 15, 2018 | Trade | Andrew McCutchen | Pittsburgh Pirates | San Francisco Giants | Pittsburgh Pirates traded RF Andrew McCutchen and cash to San Francisco Giants for RHP Kyle Crick, CF Bryan Reynolds and Future Considerations. |
| Jan 15, 2018 | Signed as free agent | Ji Man Choi | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 1B Ji-Man Choi to a minor league contract and invited him to spring training. |
| Jan 15, 2018 | Signed as free agent | Tanner Kiest | — | Minnesota Twins | Minnesota Twins signed free agent RHP Tanner Kiest to a minor league contract. |
| Jan 13, 2018 | Signed as free agent | José Geraldo | — | San Diego Padres | San Diego Padres signed free agent RHP Jose Geraldo to a minor league contract. |
| Jan 13, 2018 | Signed as free agent | Luis Barroso | — | Kansas City Royals | Kansas City Royals signed free agent RHP Luis Barroso to a minor league contract. |
| Jan 13, 2018 | Trade | Joe Musgrove | Houston Astros | Pittsburgh Pirates | Pittsburgh Pirates traded RHP Gerrit Cole to Houston Astros for 3B Colin Moran, LF Jason Martin, RHP Joe Musgrove and RHP Michael Feliz. |
| Jan 13, 2018 | Signed as free agent | Richelson Peña | — | Texas Rangers | Texas Rangers signed free agent RHP Richelson Pena to a minor league contract. |
| Jan 13, 2018 | Signed as free agent | Matt Custred | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Matt Custred to a minor league contract. |
| Jan 12, 2018 | Signed as free agent | Eiker Huizi | — | New York Mets | New York Mets signed free agent RHP Eiker Huizi to a minor league contract. |
| Jan 12, 2018 | Signed as free agent | Nathanael Heredia | — | St. Louis Cardinals | St. Louis Cardinals signed free agent LHP Nathanael Heredia to a minor league contract. |
| Jan 12, 2018 | Signed as free agent | Dario Gardea | — | Detroit Tigers | Detroit Tigers signed free agent RHP Dario Gardea to a minor league contract. |
| Jan 12, 2018 | Signed as free agent | Guillermo Fernandez | — | Kansas City Royals | Kansas City Royals signed free agent SS Guillermo Fernandez to a minor league contract. |
| Jan 12, 2018 | Signed as free agent | Martin Herrera | — | Detroit Tigers | Detroit Tigers signed free agent RHP Martin Herrera to a minor league contract. |
| Jan 12, 2018 | Signed as free agent | Claudio Ramirez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent OF Claudio Ramirez to a minor league contract. |
| Jan 12, 2018 | Signed as free agent | Jumbo Diaz | — | Miami Marlins | Miami Marlins signed free agent RHP Jumbo Diaz to a minor league contract and invited him to spring training. |
| Jan 12, 2018 | Signed as free agent | Scott Van Slyke | — | Miami Marlins | Miami Marlins signed free agent LF Scott Van Slyke to a minor league contract and invited him to spring training. |
| Jan 12, 2018 | Signed as free agent | Jon Berti | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 2B Jon Berti to a minor league contract. |
| Jan 12, 2018 | Signed as free agent | Williander Moreno | — | Detroit Tigers | Detroit Tigers signed free agent RHP Williander Moreno to a minor league contract. |
| Jan 12, 2018 | Signed as free agent | Juan Escorcia | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Juan Escorcia to a minor league contract. |
| Jan 11, 2018 | Signed as free agent | Elvin De Jesus | — | St. Louis Cardinals | St. Louis Cardinals signed free agent SS Elvin De Jesus to a minor league contract. |
| Jan 11, 2018 | Signed as free agent | Miguel González | — | Chicago White Sox | Chicago White Sox signed free agent RHP Miguel Gonzalez. |
| Jan 11, 2018 | Signed as free agent | Edwin Jackson | — | Washington Nationals | Washington Nationals signed free agent RHP Edwin Jackson to a minor league contract and invited him to spring training. |
| Jan 11, 2018 | Signed as free agent | Jorge Rondon | — | Chicago White Sox | Chicago White Sox signed free agent RHP Jorge Rondon to a minor league contract. |
| Jan 11, 2018 | Signed as free agent | José Duarte | — | Cincinnati Reds | Cincinnati Reds signed free agent C Jose Duarte to a minor league contract. |
| Jan 10, 2018 | Signed as free agent | Simon Castro | — | Athletics | Oakland Athletics signed free agent RHP Simon Castro to a minor league contract and invited him to spring training. |
| Jan 10, 2018 | Signed as free agent | Eric Jokisch | — | Athletics | Oakland Athletics signed free agent LHP Eric Jokisch to a minor league contract and invited him to spring training. |
| Jan 10, 2018 | Signed as free agent | Jarret Martin | — | Athletics | Oakland Athletics signed free agent LHP Jarret Martin to a minor league contract and invited him to spring training. |
| Jan 10, 2018 | Signed as free agent | Steve Lombardozzi Jr. | — | Athletics | Oakland Athletics signed free agent 2B Steve Lombardozzi to a minor league contract and invited him to spring training. |
| Jan 10, 2018 | Signed as free agent | Anthony García | — | Athletics | Oakland Athletics signed free agent OF Anthony Garcia to a minor league contract and invited him to spring training. |
| Jan 10, 2018 | Signed as free agent | Slade Heathcott | — | Athletics | Oakland Athletics signed free agent OF Slade Heathcott to a minor league contract and invited him to spring training. |
| Jan 10, 2018 | Signed as free agent | Nick Martini | — | Athletics | Oakland Athletics signed free agent OF Nick Martini to a minor league contract and invited him to spring training. |
| Jan 10, 2018 | Signed as free agent | Mike Ohlman | — | Texas Rangers | Texas Rangers signed free agent C Mike Ohlman to a minor league contract and invited him to spring training. |
| Jan 10, 2018 | Signed as free agent | Ryan Brett | — | Texas Rangers | Texas Rangers signed free agent 2B Ryan Brett to a minor league contract. |
| Jan 10, 2018 | Signed as free agent | Brandon Mann | — | Texas Rangers | Texas Rangers signed free agent LHP Brandon Mann to a minor league contract. |
| Jan 10, 2018 | Signed as free agent | Brandon Cumpton | — | Texas Rangers | Texas Rangers signed free agent RHP Brandon Cumpton to a minor league contract. |
| Jan 10, 2018 | Signed as free agent | Boone Logan | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Boone Logan. |
| Jan 10, 2018 | Released | Taylor Jungmann | — | Milwaukee Brewers | Milwaukee Brewers released RHP Taylor Jungmann. |
| Jan 10, 2018 | Trade | José Rondon | San Diego Padres | Chicago White Sox | San Diego Padres traded SS Jose Rondon to Chicago White Sox for cash. |
| Jan 10, 2018 | Released | Adonis García | — | Atlanta Braves | Atlanta Braves released 3B Adonis Garcia. |
| Jan 10, 2018 | Signed as free agent | J.J. Hoover | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP J.J. Hoover to a minor league contract and invited him to spring training. |
| Jan 10, 2018 | Signed as free agent | Nick Ramirez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Nick Ramirez to a minor league contract. |
| Jan 10, 2018 | Signed as free agent | John Stilson | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP John Stilson to a minor league contract and invited him to spring training. |
| Jan 10, 2018 | Signed as free agent | Moisés Sierra | — | Washington Nationals | Washington Nationals signed free agent OF Moises Sierra to a minor league contract and invited him to spring training. |
| Jan 10, 2018 | Signed as free agent | Forrest Snow | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Forrest Snow to a minor league contract and invited him to spring training. |
| Jan 10, 2018 | Signed as free agent | Dustin Hunt | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Dustin Hunt to a minor league contract. |
| Jan 9, 2018 | Signed as free agent | Ramón Flores | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Ramon Flores to a minor league contract and invited him to spring training. |
| Jan 9, 2018 | Signed as free agent | César Puello | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Cesar Puello to a minor league contract and invited him to spring training. |
| Jan 9, 2018 | Signed as free agent | Phillippe Aumont | — | Detroit Tigers | Detroit Tigers signed free agent RHP Phillippe Aumont to a minor league contract. |
| Jan 9, 2018 | Signed as free agent | Orbandy Rodriguez | — | Detroit Tigers | Detroit Tigers signed free agent RHP Orbandy Rodriguez to a minor league contract. |
| Jan 9, 2018 | Signed as free agent | Liarvis Breto | — | Detroit Tigers | Detroit Tigers signed free agent LHP Liarvis Breto to a minor league contract. |
| Jan 9, 2018 | Signed as free agent | Herlis Rodriguez | — | Detroit Tigers | Detroit Tigers signed free agent OF Herlis Rodriguez to a minor league contract. |
| Jan 9, 2018 | Signed as free agent | Pete Kozma | — | Detroit Tigers | Detroit Tigers signed free agent SS Pete Kozma to a minor league contract and invited him to spring training. |
| Jan 9, 2018 | Signed as free agent | Brayan Peña | — | Detroit Tigers | Detroit Tigers signed free agent C Brayan Pena to a minor league contract and invited him to spring training. |
| Jan 9, 2018 | Signed as free agent | Vance Worley | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Vance Worley to a minor league contract and invited him to spring training. |
| Jan 9, 2018 | Signed as free agent | René Rivera | — | Los Angeles Angels | Los Angeles Angels signed free agent C Rene Rivera. |
| Jan 9, 2018 | Signed as free agent | Kyle Ryan | — | Chicago Cubs | Chicago Cubs signed free agent LHP Kyle Ryan to a minor league contract and invited him to spring training. |
| Jan 9, 2018 | Signed as free agent | Kyle Jensen | — | San Francisco Giants | San Francisco Giants signed free agent 1B Kyle Jensen to a minor league contract and invited him to spring training. |
| Jan 9, 2018 | Signed as free agent | Tyler Cloyd | — | Miami Marlins | Miami Marlins signed free agent RHP Tyler Cloyd to a minor league contract and invited him to spring training. |
| Jan 9, 2018 | Signed as free agent | Jeremy Bleich | — | Athletics | Oakland Athletics signed free agent LHP Jeremy Bleich to a minor league contract and invited him to spring training. |
| Jan 9, 2018 | Signed as free agent | Daniel Lockhart | — | Atlanta Braves | Atlanta Braves signed free agent 2B Daniel Lockhart to a minor league contract. |
| Jan 9, 2018 | Signed as free agent | Oriel Castro | — | Chicago White Sox | Chicago White Sox signed free agent LHP Oriel Castro to a minor league contract. |
| Jan 8, 2018 | Signed as free agent | Jordan Pacheco | — | Minnesota Twins | Minnesota Twins signed free agent 1B Jordan Pacheco to a minor league contract. |
| Jan 8, 2018 | Signed as free agent | Kyle Glogoski | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Kyle Glogoski to a minor league contract. |
| Jan 8, 2018 | Signed as free agent | Cesarre Astorri | — | Athletics | Oakland Athletics signed free agent C Cesarre Astorri to a minor league contract. |
| Jan 8, 2018 | Signed as free agent | Stoney O'Brien | — | Philadelphia Phillies | Philadelphia Phillies signed free agent IF Austin O'Brien to a minor league contract. |
| Jan 8, 2018 | Signed as free agent | Christian Bethancourt | — | Milwaukee Brewers | Milwaukee Brewers signed free agent C Christian Bethancourt to a minor league contract and invited him to spring training. |
| Jan 8, 2018 | Signed as free agent | Dylan Floro | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Dylan Floro to a minor league contract and invited him to spring training. |
| Jan 8, 2018 | Signed as free agent | Daniel Camarena | — | Chicago Cubs | Chicago Cubs signed free agent LHP Daniel Camarena to a minor league contract and invited him to spring training. |
| Jan 8, 2018 | Signed as free agent | Eric Young Jr. | — | Los Angeles Angels | Los Angeles Angels signed free agent LF Eric Young Jr. to a minor league contract and invited him to spring training. |
| Jan 8, 2018 | Signed as free agent | Cito Culver | — | Miami Marlins | Miami Marlins signed free agent SS Cito Culver to a minor league contract. |
| Jan 6, 2018 | Signed as free agent | Renso Mejia | — | New York Yankees | New York Yankees signed free agent RHP Renso Mejia to a minor league contract. |
| Jan 6, 2018 | Signed as free agent | Daniel Vellojin | — | Cincinnati Reds | Cincinnati Reds signed free agent C Daniel Vellojin to a minor league contract. |
| Jan 6, 2018 | Trade | Jared Carkuff | Toronto Blue Jays | San Diego Padres | San Diego Padres traded 3B Yangervis Solarte to Toronto Blue Jays for CF Edward Olivares and RHP Jared Carkuff. |
| Jan 6, 2018 | Signed as free agent | Craig Stammen | — | San Diego Padres | San Diego Padres signed free agent RHP Craig Stammen. |
| Jan 6, 2018 | Signed as free agent | Kazuhisa Makita | — | San Diego Padres | San Diego Padres signed free agent Kazuhisa Makita. |
| Jan 6, 2018 | Signed as free agent | Preston Guilmet | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Preston Guilmet to a minor league contract and invited him to spring training. |
| Jan 5, 2018 | Signed as free agent | Manuel Garcia | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Manuel Garcia to a minor league contract. |
| Jan 5, 2018 | Signed as free agent | Juan Garcia | — | San Diego Padres | San Diego Padres signed free agent SS Juan Garcia to a minor league contract. |
| Jan 5, 2018 | Signed as free agent | Rael Santos | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Rael Santos to a minor league contract. |
| Jan 5, 2018 | Signed as free agent | Edinson Lopez | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Edinson Lopez to a minor league contract. |
| Jan 5, 2018 | Signed as free agent | Seth Maness | — | Kansas City Royals | Kansas City Royals signed free agent RHP Seth Maness to a minor league contract and invited him to spring training. |
| Jan 5, 2018 | Signed as free agent | Tyler Jones | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Tyler Jones to a minor league contract and invited him to spring training. |
| Jan 5, 2018 | Signed as free agent | Bo Schultz | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Bo Schultz to a minor league contract and invited him to spring training. |
| Jan 5, 2018 | Signed as free agent | Héctor Sánchez | — | San Francisco Giants | San Francisco Giants signed free agent C Hector Sanchez to a minor league contract and invited him to spring training. |
| Jan 5, 2018 | Signed as free agent | José Miguel Fernández | — | Los Angeles Angels | Los Angeles Angels signed free agent 2B Jose Miguel Fernandez to a minor league contract and invited him to spring training. |
| Jan 4, 2018 | Signed as free agent | Robert Zárate | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Robert Zarate to a minor league contract and invited him to spring training. |
| Jan 4, 2018 | Signed as free agent | Steve Delabar | — | Texas Rangers | Texas Rangers signed free agent RHP Steve Delabar to a minor league contract and invited him to spring training. |
| Jan 4, 2018 | Signed as free agent | Destin Hood | — | Texas Rangers | Texas Rangers signed free agent OF Destin Hood to a minor league contract and invited him to spring training. |
| Jan 4, 2018 | Trade | Erick Mejia | Los Angeles Dodgers | Kansas City Royals | Chicago White Sox Traded 2B Jake Peter to Los Angeles Dodgers; Los Angeles Dodgers Traded cash, RHP Joakim Soria and LHP Luis Avilan to Chicago White Sox; Los Angeles Dodgers Traded SS Erick Mejia and RHP Trevor Oaks to Kansas City Royals and Kansas City Royals Traded RHP Joakim Soria and LHP Scott Alexander to Los Angeles Dodgers. |
| Jan 4, 2018 | Signed as free agent | Mike Kickham | — | Miami Marlins | Miami Marlins signed free agent LHP Mike Kickham to a minor league contract and invited him to spring training. |
| Jan 4, 2018 | Signed as free agent | Lazaro Estrada | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Lazaro Estrada to a minor league contract. |
| Jan 3, 2018 | Signed as free agent | Pedro Beato | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Pedro Beato to a minor league contract and invited him to spring training. |
| Jan 3, 2018 | Signed as free agent | Pedro Florimón | — | Philadelphia Phillies | Philadelphia Phillies signed free agent CF Pedro Florimon to a minor league contract and invited him to spring training. |
| Jan 3, 2018 | Signed as free agent | Eric Fryer | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Eric Fryer to a minor league contract and invited him to spring training. |
| Jan 3, 2018 | Signed as free agent | Steve Geltz | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Steve Geltz to a minor league contract and invited him to spring training. |
| Jan 3, 2018 | Signed as free agent | Matt McBride | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Matt McBride to a minor league contract and invited him to spring training. |
| Jan 3, 2018 | Signed as free agent | Heiker Meneses | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 3B Heiker Meneses to a minor league contract and invited him to spring training. |
| Jan 3, 2018 | Signed as free agent | Will Middlebrooks | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 3B Will Middlebrooks to a minor league contract and invited him to spring training. |
| Jan 3, 2018 | Signed as free agent | Danny Ortiz | — | Philadelphia Phillies | Philadelphia Phillies signed free agent OF Danny Ortiz to a minor league contract and invited him to spring training. |
| Jan 3, 2018 | Signed as free agent | Nick Buss | — | Minnesota Twins | Minnesota Twins signed free agent OF Nick Buss to a minor league contract and invited him to spring training. |
| Jan 3, 2018 | Signed as free agent | Roman Mendez | — | Washington Nationals | Washington Nationals signed free agent RHP Roman Mendez to a minor league contract and invited him to spring training. |
| Jan 3, 2018 | Signed as free agent | Jose Pena | — | Miami Marlins | Miami Marlins signed free agent RHP Jose Pena to a minor league contract. |
| Jan 3, 2018 | Signed as free agent | Josh Prince | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 2B Josh Prince to a minor league contract. |
| Jan 2, 2018 | Trade | Dylan Baker | Milwaukee Brewers | Los Angeles Dodgers | Milwaukee Brewers traded RHP Dylan Baker to Los Angeles Dodgers for cash. |
| Jan 2, 2018 | Signed as free agent | Jace Peterson | — | New York Yankees | New York Yankees signed free agent 2B Jace Peterson to a minor league contract and invited him to spring training. |
| Jan 2, 2018 | Signed as free agent | Angel Rojas | — | New York Yankees | New York Yankees signed free agent SS Angel Rojas to a minor league contract. |
| Jan 1, 2018 | Signed as free agent | C.C. Lee | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP C.C. Lee to a minor league contract and invited him to spring training. |
Every row is captured from MLB’s official StatsAPI transactions feed with MLB’s published description unedited. Signings include both major-league and minor-league contracts signed with a major-league club; injury-list moves and minor-league affiliate-only transactions are outside this archive’s scope.
Transaction data: official MLB StatsAPI. Data provided by MLB Advanced Media. Archived and published by Legends Deck.