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The 2020 season’s official transaction log: 1,768 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, 2020 | Signed as free agent | Ha-Seong Kim | — | San Diego Padres | San Diego Padres signed free agent SS Ha-seong Kim. |
| Dec 31, 2020 | Signed as free agent | Aneurys Zabala | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Aneurys Zabala to a minor league contract. |
| Dec 31, 2020 | Signed as free agent | Chris Ellis | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Chris Ellis to a minor league contract. |
| Dec 31, 2020 | Signed as free agent | Ha-Seong Kim | — | San Diego Padres | San Diego Padres signed free agent SS Ha-Seong Kim. |
| Dec 31, 2020 | Signed as free agent | Unnamed | — | San Diego Padres | San Diego Padres signed free agent SS Ha-Seong Kim, , , , and. |
| Dec 30, 2020 | Signed as free agent | Ofreidy Gómez | — | Chicago White Sox | Chicago White Sox signed free agent RHP Ofreidy Gomez to a minor league contract. |
| Dec 29, 2020 | Trade | José Alvarado | Tampa Bay Rays | Philadelphia Phillies | Tampa Bay Rays Traded LHP Jose Alvarado to Philadelphia Phillies; Los Angeles Dodgers Traded Player To Be Named Later and 1B Dillon Paulson to Tampa Bay Rays and Philadelphia Phillies Traded LHP Garrett Cleavinger to Los Angeles Dodgers. |
| Dec 29, 2020 | Signed as free agent | Kevan Smith | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Kevan Smith to a minor league contract and invited him to spring training. |
| Dec 29, 2020 | Signed as free agent | Hansel Robles | — | Minnesota Twins | Minnesota Twins signed free agent RHP Hansel Robles. |
| Dec 29, 2020 | Signed as free agent | Tommy Kahnle | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Tommy Kahnle. |
| Dec 29, 2020 | Trade | Cole Wilcox | San Diego Padres | Tampa Bay Rays | San Diego Padres traded C Blake Hunt, RHP Cole Wilcox, C Francisco Mejia and RHP Luis Patino to Tampa Bay Rays for LHP Blake Snell. |
| Dec 29, 2020 | Trade | Reginald Preciado | San Diego Padres | Chicago Cubs | Chicago Cubs traded RHP Yu Darvish, C Victor Caratini and cash to San Diego Padres for RHP Zach Davies, SS Reginald Preciado, SS Yeison Santana, OF Ismael Mena and OF Owen Caissie. |
| Dec 29, 2020 | Signed as free agent | Daniel Gossett | — | Boston Red Sox | Boston Red Sox signed free agent RHP Daniel Gossett to a minor league contract and invited him to spring training. |
| Dec 29, 2020 | Signed as free agent | Matt Dermody | — | Chicago Cubs | Chicago Cubs signed free agent LHP Matt Dermody to a minor league contract. |
| Dec 29, 2020 | Signed as free agent | Ervin Santana | — | Kansas City Royals | Kansas City Royals signed free agent RHP Ervin Santana to a minor league contract and invited him to spring training. |
| Dec 29, 2020 | Signed as free agent | Juan Graterol | — | Los Angeles Angels | Los Angeles Angels signed free agent C Juan Graterol to a minor league contract and invited him to spring training. |
| Dec 29, 2020 | Signed as free agent | Henry Martinez | — | Detroit Tigers | Detroit Tigers signed free agent RHP Henry Martinez to a minor league contract. |
| Dec 29, 2020 | Signed as free agent | Locke St. John | — | Detroit Tigers | Detroit Tigers signed free agent LHP Locke St. John to a minor league contract. |
| Dec 29, 2020 | Signed as free agent | Mitch Nay | — | Los Angeles Angels | Los Angeles Angels signed free agent 3B Mitch Nay to a minor league contract. |
| Dec 29, 2020 | Signed as free agent | Jimmy Yacabonis | — | Seattle Mariners | Seattle Mariners signed free agent RHP Jimmy Yacabonis to a minor league contract. |
| Dec 29, 2020 | Signed as free agent | Tommy Kahnle | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Tommy Kahnle. |
| Dec 29, 2020 | Signed as free agent | Juan Graterol | — | Los Angeles Angels | Los Angeles Angels signed free agent C Juan Graterol to a minor league contract and invited him to spring training. |
| Dec 29, 2020 | Signed as free agent | Ervin Santana | — | Kansas City Royals | Kansas City Royals signed free agent RHP Ervin Santana to a minor league contract and invited him to spring training. |
| Dec 29, 2020 | Signed as free agent | Daniel Gossett | — | Boston Red Sox | Boston Red Sox signed free agent RHP Daniel Gossett to a minor league contract and invited him to spring training. |
| Dec 29, 2020 | Signed as free agent | Kevan Smith | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Kevan Smith. |
| Dec 29, 2020 | Signed as free agent | Juan Graterol | — | Los Angeles Angels | Los Angeles Angels signed free agent C Juan Graterol. |
| Dec 29, 2020 | Signed as free agent | Ervin Santana | — | Kansas City Royals | Kansas City Royals signed free agent P Ervin Santana. |
| Dec 29, 2020 | Signed as free agent | Daniel Gossett | — | Boston Red Sox | Boston Red Sox signed free agent P Daniel Gossett. |
| Dec 29, 2020 | Signed as free agent | Hansel Robles | — | Minnesota Twins | Minnesota Twins signed free agent P Hansel Robles. |
| Dec 29, 2020 | Signed as free agent | Hansel Robles | — | Minnesota Twins | Minnesota Twins signed free agent RHP Hansel Robles. |
| Dec 28, 2020 | Signed as free agent | Charlie Culberson | — | Texas Rangers | Texas Rangers signed free agent 2B Charlie Culberson to a minor league contract and invited him to spring training. |
| Dec 28, 2020 | Signed as free agent | Jesus Linarez | — | Texas Rangers | Texas Rangers signed free agent RHP Jesus Linarez to a minor league contract. |
| Dec 28, 2020 | Signed as free agent | Sal Mendez | — | Texas Rangers | Texas Rangers signed free agent LHP Sal Mendez to a minor league contract. |
| Dec 28, 2020 | Signed as free agent | Tim Dillard | — | Texas Rangers | Texas Rangers signed free agent RHP Tim Dillard to a minor league contract. |
| Dec 28, 2020 | Signed as free agent | Elier Hernandez | — | Texas Rangers | Texas Rangers signed free agent OF Elier Hernandez to a minor league contract. |
| Dec 28, 2020 | Signed as free agent | Collin Wiles | — | Texas Rangers | Texas Rangers signed free agent RHP Collin Wiles to a minor league contract. |
| Dec 28, 2020 | Signed as free agent | Javy Guerra | — | Washington Nationals | Washington Nationals signed free agent RHP Javy Guerra to a minor league contract and invited him to spring training. |
| Dec 28, 2020 | Signed as free agent | Javy Guerra | — | Washington Nationals | Washington Nationals signed free agent P Javy Guerra. |
| Dec 28, 2020 | Signed as free agent | Charlie Culberson | — | Texas Rangers | Texas Rangers signed free agent 3B Charlie Culberson. |
| Dec 26, 2020 | Signed as free agent | Kohei Arihara | — | Texas Rangers | Texas Rangers signed free agent RHP Kohei Arihara. |
| Dec 26, 2020 | Signed as free agent | Jaycob Brugman | — | Atlanta Braves | Atlanta Braves signed free agent LF Jaycob Brugman to a minor league contract. |
| Dec 26, 2020 | Signed as free agent | Kohei Arihara | — | Texas Rangers | Texas Rangers signed free agent P Kohei Arihara. |
| Dec 26, 2020 | Signed as free agent | Kohei Arihara | — | Texas Rangers | Texas Rangers signed free agent P Kohei Arihara. |
| Dec 24, 2020 | Trade | Josh Bell | Pittsburgh Pirates | Washington Nationals | Pittsburgh Pirates traded 1B Josh Bell to Washington Nationals for RHP Wil Crowe and RHP Eddy Yean. |
| Dec 24, 2020 | Signed as free agent | Mike Wright Jr. | — | Chicago White Sox | Chicago White Sox signed free agent RHP Mike Wright to a minor league contract and invited him to spring training. |
| Dec 24, 2020 | Signed as free agent | Mike Wright Jr. | — | Chicago White Sox | Chicago White Sox signed free agent RHP Mike Wright to a minor league contract and invited him to spring training. |
| Dec 24, 2020 | Signed as free agent | Mike Wright Jr. | — | Chicago White Sox | Chicago White Sox signed free agent P Mike Wright. |
| Dec 23, 2020 | Signed as free agent | Dustin Garneau | — | Detroit Tigers | Detroit Tigers signed free agent C Dustin Garneau to a minor league contract and invited him to spring training. |
| Dec 23, 2020 | Signed as free agent | Matt Andriese | — | Boston Red Sox | Boston Red Sox signed free agent RHP Matt Andriese. |
| Dec 23, 2020 | Signed as free agent | Jose Siri | — | Houston Astros | Houston Astros signed free agent OF Jose Siri to a minor league contract and invited him to spring training. |
| Dec 23, 2020 | Signed as free agent | Edgar García | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Edgar Ernesto Garcia. |
| Dec 23, 2020 | Signed as free agent | José Ureña | — | Detroit Tigers | Detroit Tigers signed free agent RHP Jose Urena. |
| Dec 23, 2020 | Signed as free agent | Jose Siri | — | Houston Astros | Houston Astros signed free agent OF Jose Siri to a minor league contract and invited him to spring training. |
| Dec 23, 2020 | Signed as free agent | Dustin Garneau | — | Detroit Tigers | Detroit Tigers signed free agent C Dustin Garneau to a minor league contract and invited him to spring training. |
| Dec 23, 2020 | Signed as free agent | Jose Siri | — | Houston Astros | Houston Astros signed free agent CF Jose Siri. |
| Dec 23, 2020 | Signed as free agent | Dustin Garneau | — | Detroit Tigers | Detroit Tigers signed free agent C Dustin Garneau. |
| Dec 23, 2020 | Signed as free agent | José Ureña | — | Detroit Tigers | Detroit Tigers signed free agent P Jose Urena. |
| Dec 23, 2020 | Signed as free agent | Matt Andriese | — | Boston Red Sox | Boston Red Sox signed free agent P Matt Andriese. |
| Dec 23, 2020 | Signed as free agent | José Ureña | — | Detroit Tigers | Detroit Tigers signed free agent P Jose Urena. |
| Dec 23, 2020 | Signed as free agent | Matt Andriese | — | Boston Red Sox | Boston Red Sox signed free agent P Matt Andriese. |
| Dec 22, 2020 | Signed as free agent | Jefry Rodriguez | — | Washington Nationals | Washington Nationals signed free agent RHP Jefry Rodriguez to a minor league contract and invited him to spring training. |
| Dec 22, 2020 | Signed as free agent | JT Riddle | — | Minnesota Twins | Minnesota Twins signed free agent SS JT Riddle to a minor league contract and invited him to spring training. |
| Dec 22, 2020 | Signed as free agent | JT Riddle | — | Minnesota Twins | Minnesota Twins signed free agent SS JT Riddle to a minor league contract and invited him to spring training. |
| Dec 22, 2020 | Signed as free agent | Jefry Rodriguez | — | Washington Nationals | Washington Nationals signed free agent P Jefry Rodriguez. |
| Dec 22, 2020 | Signed as free agent | JT Riddle | — | Minnesota Twins | Minnesota Twins signed free agent SS JT Riddle. |
| Dec 21, 2020 | Signed as free agent | Fernando Abad | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Fernando Abad to a minor league contract. |
| Dec 21, 2020 | Signed as free agent | Nick Ciuffo | — | Baltimore Orioles | Baltimore Orioles signed free agent C Nick Ciuffo to a minor league contract and invited him to spring training. |
| Dec 21, 2020 | Signed as free agent | Claudio Custodio | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Claudio Custodio to a minor league contract. |
| Dec 21, 2020 | Signed as free agent | Jerad Eickhoff | — | New York Mets | New York Mets signed free agent RHP Jerad Eickhoff to a minor league contract and invited him to spring training. |
| Dec 21, 2020 | Signed as free agent | Jerry Blevins | — | New York Mets | New York Mets signed free agent LHP Jerry Blevins to a minor league contract and invited him to spring training. |
| Dec 21, 2020 | Signed as free agent | Tom Windle | — | New York Mets | New York Mets signed free agent LHP Tom Windle to a minor league contract and invited him to spring training. |
| Dec 21, 2020 | Signed as free agent | Wilfredo Tovar | — | New York Mets | New York Mets signed free agent SS Wilfredo Tovar to a minor league contract and invited him to spring training. |
| Dec 21, 2020 | Signed as free agent | John Brebbia | — | San Francisco Giants | San Francisco Giants signed free agent RHP John Brebbia. |
| Dec 21, 2020 | Signed as free agent | Matt Ball | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Matt Ball to a minor league contract and invited him to spring training. |
| Dec 21, 2020 | Signed as free agent | Josh Osich | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Josh Osich to a minor league contract and invited him to spring training. |
| Dec 21, 2020 | Signed as free agent | John Brebbia | — | San Francisco Giants | San Francisco Giants signed free agent RHP John Brebbia. |
| Dec 21, 2020 | Signed as free agent | Nick Ciuffo | — | Baltimore Orioles | Baltimore Orioles signed free agent C Nick Ciuffo to a minor league contract and invited him to spring training. |
| Dec 21, 2020 | Signed as free agent | Wilfredo Tovar | — | New York Mets | New York Mets signed free agent SS Wilfredo Tovar. |
| Dec 21, 2020 | Signed as free agent | Tom Windle | — | New York Mets | New York Mets signed free agent P Tom Windle. |
| Dec 21, 2020 | Signed as free agent | Jerad Eickhoff | — | New York Mets | New York Mets signed free agent P Jerad Eickhoff. |
| Dec 21, 2020 | Signed as free agent | Jerry Blevins | — | New York Mets | New York Mets signed free agent P Jerry Blevins. |
| Dec 21, 2020 | Signed as free agent | Josh Osich | — | Cincinnati Reds | Cincinnati Reds signed free agent P Josh Osich. |
| Dec 21, 2020 | Signed as free agent | Matt Ball | — | Cincinnati Reds | Cincinnati Reds signed free agent P Matt Ball. |
| Dec 21, 2020 | Signed as free agent | Nick Ciuffo | — | Baltimore Orioles | Baltimore Orioles signed free agent C Nick Ciuffo. |
| Dec 18, 2020 | Signed as free agent | Hoby Milner | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Hoby Milner to a minor league contract and invited him to spring training. |
| Dec 18, 2020 | Signed as free agent | Michael Wacha | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Michael Wacha. |
| Dec 18, 2020 | Signed as free agent | Dylan Cozens | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RF Dylan Cozens to a minor league contract and invited him to spring training. |
| Dec 18, 2020 | Trade | Ryder Ryan | New York Mets | Texas Rangers | New York Mets traded RHP Ryder Ryan to Texas Rangers. |
| Dec 18, 2020 | Signed as free agent | Richard Urena | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Richard Urena to a minor league contract and invited him to spring training. |
| Dec 18, 2020 | Signed as free agent | Forrest Wall | — | Toronto Blue Jays | Toronto Blue Jays signed free agent CF Forrest Wall to a minor league contract and invited him to spring training. |
| Dec 18, 2020 | Signed as free agent | Tyler White | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 1B Tyler White to a minor league contract and invited him to spring training. |
| Dec 18, 2020 | Signed as free agent | Bo Takahashi | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Bo Takahashi to a minor league contract and invited him to spring training. |
| Dec 18, 2020 | Signed as free agent | Chris Flexen | — | Seattle Mariners | Seattle Mariners signed free agent RHP Chris Flexen. |
| Dec 18, 2020 | Signed as free agent | Dylan Cozens | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RF Dylan Cozens to a minor league contract and invited him to spring training. |
| Dec 18, 2020 | Signed as free agent | Hoby Milner | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Hoby Milner to a minor league contract and invited him to spring training. |
| Dec 18, 2020 | Signed as free agent | Forrest Wall | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 2B Forrest Wall. |
| Dec 18, 2020 | Signed as free agent | Richard Urena | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Richard Urena. |
| Dec 18, 2020 | Signed as free agent | Tyler White | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 1B Tyler White. |
| Dec 18, 2020 | Signed as free agent | Dylan Cozens | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LF Dylan Cozens. |
| Dec 18, 2020 | Signed as free agent | Hoby Milner | — | Milwaukee Brewers | Milwaukee Brewers signed free agent P Hoby Milner. |
| Dec 18, 2020 | Signed as free agent | Bo Takahashi | — | Cincinnati Reds | Cincinnati Reds signed free agent P Bo Takahashi. |
| Dec 18, 2020 | Signed as free agent | Michael Wacha | — | Tampa Bay Rays | Tampa Bay Rays signed free agent P Michael Wacha. |
| Dec 18, 2020 | Signed as free agent | Chris Flexen | — | Seattle Mariners | Seattle Mariners signed free agent P Chris Flexen. |
| Dec 18, 2020 | Signed as free agent | Chris Flexen | — | Seattle Mariners | Seattle Mariners signed free agent P Chris Flexen. |
| Dec 18, 2020 | Signed as free agent | Chris Flexen | — | Seattle Mariners | Seattle Mariners signed free agent P Chris Flexen. |
| Dec 18, 2020 | Signed as free agent | Michael Wacha | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Michael Wacha. |
| Dec 18, 2020 | Signed as free agent | Unnamed | — | Seattle Mariners | Seattle Mariners signed free agent RHP Chris Flexen, and. |
| Dec 17, 2020 | Signed as free agent | Jonathan Holder | — | Chicago Cubs | Chicago Cubs signed free agent RHP Jonathan Holder. |
| Dec 17, 2020 | Released | Fernando Romero | — | Minnesota Twins | Minnesota Twins released RHP Fernando Romero. |
| Dec 17, 2020 | Signed as free agent | José Rondon | — | St. Louis Cardinals | St. Louis Cardinals signed free agent 2B Jose Rondon to a minor league contract and invited him to spring training. |
| Dec 17, 2020 | Signed as free agent | Nabil Crismatt | — | San Diego Padres | San Diego Padres signed free agent RHP Nabil Crismatt to a minor league contract and invited him to spring training. |
| Dec 17, 2020 | Signed as free agent | Matt Reynolds | — | Chicago White Sox | Chicago White Sox signed free agent SS Matt Reynolds to a minor league contract and invited him to spring training. |
| Dec 17, 2020 | Signed as free agent | Nabil Crismatt | — | San Diego Padres | San Diego Padres signed free agent RHP Nabil Crismatt to a minor league contract and invited him to spring training. |
| Dec 17, 2020 | Signed as free agent | Matt Reynolds | — | Chicago White Sox | Chicago White Sox signed free agent SS Matt Reynolds to a minor league contract and invited him to spring training. |
| Dec 17, 2020 | Signed as free agent | Jonathan Holder | — | Chicago Cubs | Chicago Cubs signed free agent RHP Jonathan Holder. |
| Dec 17, 2020 | Signed as free agent | José Rondon | — | St. Louis Cardinals | St. Louis Cardinals signed free agent 3B Jose Rondon. |
| Dec 17, 2020 | Signed as free agent | Nabil Crismatt | — | San Diego Padres | San Diego Padres signed free agent P Nabil Crismatt. |
| Dec 17, 2020 | Signed as free agent | Matt Reynolds | — | Chicago White Sox | Chicago White Sox signed free agent SS Matt Reynolds. |
| Dec 16, 2020 | Signed as free agent | Alex Claudio | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Alex Claudio. |
| Dec 16, 2020 | Signed as free agent | Mike Zunino | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Mike Zunino. |
| Dec 16, 2020 | Signed as free agent | Keynan Middleton | — | Seattle Mariners | Seattle Mariners signed free agent RHP Keynan Middleton. |
| Dec 16, 2020 | Signed as free agent | Dustin Peterson | — | Milwaukee Brewers | Milwaukee Brewers signed free agent OF Dustin Peterson to a minor league contract. |
| Dec 16, 2020 | Trade | Scott Heineman | Texas Rangers | Cincinnati Reds | Texas Rangers traded RF Scott Heineman to Cincinnati Reds for 2B Jose Acosta. |
| Dec 16, 2020 | Signed as free agent | Luis Ortiz | — | Texas Rangers | Texas Rangers signed free agent RHP Luis Ortiz to a minor league contract and invited him to spring training. |
| Dec 16, 2020 | Signed as free agent | David Hess | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP David Hess to a minor league contract and invited him to spring training. |
| Dec 16, 2020 | Signed as free agent | Andrew Kittredge | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Andrew Kittredge to a minor league contract and invited him to spring training. |
| Dec 16, 2020 | Signed as free agent | Joseph Odom | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Joseph Odom to a minor league contract and invited him to spring training. |
| Dec 16, 2020 | Signed as free agent | Anthony DeSclafani | — | San Francisco Giants | San Francisco Giants signed free agent RHP Anthony DeSclafani. |
| Dec 16, 2020 | Signed as free agent | Cam Opp | — | New York Mets | New York Mets signed free agent LHP Cam Opp to a minor league contract. |
| Dec 16, 2020 | Signed as free agent | Jose Colina | — | New York Mets | New York Mets signed free agent C Jose Colina to a minor league contract. |
| Dec 16, 2020 | Signed as free agent | Nick Burdi | — | San Diego Padres | San Diego Padres signed free agent RHP Nick Burdi to a minor league contract and invited him to spring training. |
| Dec 16, 2020 | Signed as free agent | Tim Federowicz | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Tim Federowicz to a minor league contract and invited him to spring training. |
| Dec 16, 2020 | Signed as free agent | Carlos Asuaje | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 2B Carlos Asuaje to a minor league contract. |
| Dec 16, 2020 | Signed as free agent | Matt Duffy | — | Chicago Cubs | Chicago Cubs signed free agent 3B Matt Duffy to a minor league contract. |
| Dec 16, 2020 | Signed as free agent | Andy Burns | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 2B Andy Burns to a minor league contract and invited him to spring training. |
| Dec 16, 2020 | Signed as free agent | Anthony DeSclafani | — | San Francisco Giants | San Francisco Giants signed free agent RHP Anthony DeSclafani. |
| Dec 16, 2020 | Signed as free agent | Nick Burdi | — | San Diego Padres | San Diego Padres signed free agent RHP Nick Burdi to a minor league contract and invited him to spring training. |
| Dec 16, 2020 | Signed as free agent | Andy Burns | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 2B Andy Burns to a minor league contract and invited him to spring training. |
| Dec 16, 2020 | Signed as free agent | Tim Federowicz | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Tim Federowicz to a minor league contract and invited him to spring training. |
| Dec 16, 2020 | Signed as free agent | Luis Ortiz | — | Texas Rangers | Texas Rangers signed free agent P Luis Ortiz. |
| Dec 16, 2020 | Signed as free agent | Joseph Odom | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Joseph Odom. |
| Dec 16, 2020 | Signed as free agent | Nick Burdi | — | San Diego Padres | San Diego Padres signed free agent P Nick Burdi. |
| Dec 16, 2020 | Signed as free agent | Dustin Peterson | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LF Dustin Peterson. |
| Dec 16, 2020 | Signed as free agent | Andy Burns | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 3B Andy Burns. |
| Dec 16, 2020 | Signed as free agent | Tim Federowicz | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Tim Federowicz. |
| Dec 16, 2020 | Signed as free agent | Mike Zunino | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Mike Zunino. |
| Dec 16, 2020 | Signed as free agent | Keynan Middleton | — | Seattle Mariners | Seattle Mariners signed free agent P Keynan Middleton. |
| Dec 16, 2020 | Signed as free agent | Keynan Middleton | — | Seattle Mariners | Seattle Mariners signed free agent P Keynan Middleton. |
| Dec 16, 2020 | Signed as free agent | Alex Claudio | — | Los Angeles Angels | Los Angeles Angels signed free agent P Alex Claudio. |
| Dec 16, 2020 | Signed as free agent | Keynan Middleton | — | Seattle Mariners | Seattle Mariners signed free agent P Keynan Middleton. |
| Dec 16, 2020 | Signed as free agent | Anthony DeSclafani | — | San Francisco Giants | San Francisco Giants signed free agent P Anthony DeSclafani. |
| Dec 16, 2020 | Signed as free agent | Mike Zunino | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Mike Zunino, , , and. |
| Dec 16, 2020 | Signed as free agent | Keynan Middleton | — | Seattle Mariners | Seattle Mariners signed free agent RHP Keynan Middleton. |
| Dec 16, 2020 | Signed as free agent | Anthony DeSclafani | — | San Francisco Giants | San Francisco Giants signed free agent RHP Anthony DeSclafani. |
| Dec 16, 2020 | Signed as free agent | Alex Claudio | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Alex Claudio. |
| Dec 15, 2020 | Signed as free agent | James McCann | — | New York Mets | New York Mets signed free agent C James McCann. |
| Dec 15, 2020 | Trade | Jose Corniell | Seattle Mariners | Texas Rangers | Texas Rangers traded RHP Rafael Montero to Seattle Mariners for RHP Jose Corniell and Player To Be Named Later. |
| Dec 15, 2020 | Signed as free agent | David Dahl | — | Texas Rangers | Texas Rangers signed free agent LF David Dahl. |
| Dec 15, 2020 | Signed as free agent | Max Moroff | — | St. Louis Cardinals | St. Louis Cardinals signed free agent SS Max Moroff to a minor league contract and invited him to spring training. |
| Dec 15, 2020 | Signed as free agent | Jacob Rhame | — | San Diego Padres | San Diego Padres signed free agent RHP Jacob Rhame to a minor league contract and invited him to spring training. |
| Dec 15, 2020 | Signed as free agent | Adam Warren | — | New York Yankees | New York Yankees signed free agent RHP Adam Warren to a minor league contract and invited him to spring training. |
| Dec 15, 2020 | Signed as free agent | Jacob Rhame | — | San Diego Padres | San Diego Padres signed free agent RHP Jacob Rhame to a minor league contract and invited him to spring training. |
| Dec 15, 2020 | Signed as free agent | Max Moroff | — | St. Louis Cardinals | St. Louis Cardinals signed free agent 2B Max Moroff. |
| Dec 15, 2020 | Signed as free agent | Jacob Rhame | — | San Diego Padres | San Diego Padres signed free agent P Jacob Rhame. |
| Dec 15, 2020 | Signed as free agent | Adam Warren | — | New York Yankees | New York Yankees signed free agent P Adam Warren. |
| Dec 15, 2020 | Signed as free agent | David Dahl | — | Texas Rangers | Texas Rangers signed free agent LF David Dahl. |
| Dec 15, 2020 | Signed as free agent | James McCann | — | New York Mets | New York Mets signed free agent C James McCann. |
| Dec 15, 2020 | Signed as free agent | James McCann | — | New York Mets | New York Mets signed free agent C James McCann. |
| Dec 15, 2020 | Signed as free agent | David Dahl | — | Texas Rangers | Texas Rangers signed free agent LF David Dahl. |
| Dec 15, 2020 | Signed as free agent | James McCann | — | New York Mets | New York Mets signed free agent C James McCann. |
| Dec 15, 2020 | Signed as free agent | James McCann | — | New York Mets | New York Mets signed free agent C James McCann. |
| Dec 14, 2020 | Signed as free agent | Hunter Renfroe | — | Boston Red Sox | Boston Red Sox signed free agent LF Hunter Renfroe. |
| Dec 14, 2020 | Signed as free agent | Greg Holland | — | Kansas City Royals | Kansas City Royals signed free agent RHP Greg Holland. |
| Dec 14, 2020 | Signed as free agent | Jharel Cotton | — | Texas Rangers | Texas Rangers signed free agent RHP Jharel Cotton to a minor league contract and invited him to spring training. |
| Dec 14, 2020 | Signed as free agent | Jason Martin | — | Texas Rangers | Texas Rangers signed free agent CF Jason Martin to a minor league contract and invited him to spring training. |
| Dec 14, 2020 | Signed as free agent | Edubray Ramos | — | Texas Rangers | Texas Rangers signed free agent RHP Edubray Ramos to a minor league contract and invited him to spring training. |
| Dec 14, 2020 | Signed as free agent | Trevor Kelley | — | Chicago Cubs | Chicago Cubs signed free agent RHP Trevor Kelley to a minor league contract. |
| Dec 14, 2020 | Signed as free agent | Robbie Tenerowicz | — | Cincinnati Reds | Cincinnati Reds signed free agent 2B Robbie Tenerowicz to a minor league contract. |
| Dec 14, 2020 | Signed as free agent | Ben Rowen | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Ben Rowen to a minor league contract and invited him to spring training. |
| Dec 14, 2020 | Signed as free agent | Luke Farrell | — | Minnesota Twins | Minnesota Twins signed free agent RHP Luke Farrell to a minor league contract and invited him to spring training. |
| Dec 14, 2020 | Signed as free agent | Glenn Sparkman | — | Minnesota Twins | Minnesota Twins signed free agent RHP Glenn Sparkman to a minor league contract and invited him to spring training. |
| Dec 14, 2020 | Signed as free agent | Matt Bowman | — | New York Yankees | New York Yankees signed free agent RHP Matt Bowman to a minor league contract. |
| Dec 14, 2020 | Signed as free agent | Kellin Deglan | — | New York Yankees | New York Yankees signed free agent C Kellin Deglan to a minor league contract and invited him to spring training. |
| Dec 14, 2020 | Signed as free agent | Reymin Guduan | — | Athletics | Oakland Athletics signed free agent LHP Reymin Guduan to a minor league contract. |
| Dec 14, 2020 | Signed as free agent | Glenn Sparkman | — | Minnesota Twins | Minnesota Twins signed free agent RHP Glenn Sparkman to a minor league contract and invited him to spring training. |
| Dec 14, 2020 | Signed as free agent | Luke Farrell | — | Minnesota Twins | Minnesota Twins signed free agent RHP Luke Farrell to a minor league contract and invited him to spring training. |
| Dec 14, 2020 | Signed as free agent | Ben Rowen | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Ben Rowen to a minor league contract and invited him to spring training. |
| Dec 14, 2020 | Signed as free agent | Jason Martin | — | Texas Rangers | Texas Rangers signed free agent CF Jason Martin. |
| Dec 14, 2020 | Signed as free agent | Jharel Cotton | — | Texas Rangers | Texas Rangers signed free agent P Jharel Cotton. |
| Dec 14, 2020 | Signed as free agent | Kellin Deglan | — | New York Yankees | New York Yankees signed free agent C Kellin Deglan. |
| Dec 14, 2020 | Signed as free agent | Glenn Sparkman | — | Minnesota Twins | Minnesota Twins signed free agent P Glenn Sparkman. |
| Dec 14, 2020 | Signed as free agent | Luke Farrell | — | Minnesota Twins | Minnesota Twins signed free agent P Luke Farrell. |
| Dec 14, 2020 | Signed as free agent | Ben Rowen | — | Los Angeles Angels | Los Angeles Angels signed free agent P Ben Rowen. |
| Dec 14, 2020 | Signed as free agent | Greg Holland | — | Kansas City Royals | Kansas City Royals signed free agent P Greg Holland. |
| Dec 14, 2020 | Signed as free agent | Hunter Renfroe | — | Boston Red Sox | Boston Red Sox signed free agent RF Hunter Renfroe. |
| Dec 14, 2020 | Signed as free agent | Greg Holland | — | Kansas City Royals | Kansas City Royals signed free agent P Greg Holland. |
| Dec 14, 2020 | Signed as free agent | Hunter Renfroe | — | Boston Red Sox | Boston Red Sox signed free agent RF Hunter Renfroe. |
| Dec 14, 2020 | Signed as free agent | Hunter Renfroe | — | Boston Red Sox | Boston Red Sox signed free agent RF Hunter Renfroe. |
| Dec 13, 2020 | Signed as free agent | James Bourque | — | Chicago Cubs | Chicago Cubs signed free agent RHP James Bourque to a minor league contract and invited him to spring training. |
| Dec 13, 2020 | Signed as free agent | Jeison Guzmán | — | Kansas City Royals | Kansas City Royals signed free agent SS Jeison Guzman to a minor league contract. |
| Dec 13, 2020 | Signed as free agent | Thomas Milone | — | New York Yankees | New York Yankees signed free agent OF Thomas Milone to a minor league contract and invited him to spring training. |
| Dec 13, 2020 | Signed as free agent | James Bourque | — | Chicago Cubs | Chicago Cubs signed free agent RHP James Bourque to a minor league contract and invited him to spring training. |
| Dec 13, 2020 | Signed as free agent | Thomas Milone | — | New York Yankees | New York Yankees signed free agent CF Thomas Milone. |
| Dec 13, 2020 | Signed as free agent | James Bourque | — | Chicago Cubs | Chicago Cubs signed free agent P James Bourque. |
| Dec 12, 2020 | Signed as free agent | Rob Brantly | — | New York Yankees | New York Yankees signed free agent C Rob Brantly to a minor league contract and invited him to spring training. |
| Dec 12, 2020 | Signed as free agent | Ryan LaMarre | — | New York Yankees | New York Yankees signed free agent OF Ryan LaMarre to a minor league contract and invited him to spring training. |
| Dec 12, 2020 | Signed as free agent | Nick Ramirez | — | San Diego Padres | San Diego Padres signed free agent LHP Nick Ramirez to a minor league contract and invited him to spring training. |
| Dec 12, 2020 | Signed as free agent | Luis García | — | New York Yankees | New York Yankees signed free agent RHP Luis Garcia to a minor league contract and invited him to spring training. |
| Dec 12, 2020 | Signed as free agent | Ian Krol | — | Detroit Tigers | Detroit Tigers signed free agent LHP Ian Krol to a minor league contract and invited him to spring training. |
| Dec 12, 2020 | Signed as free agent | Brock Stewart | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Brock Stewart to a minor league contract. |
| Dec 12, 2020 | Signed as free agent | Nick Ramirez | — | San Diego Padres | San Diego Padres signed free agent LHP Nick Ramirez to a minor league contract and invited him to spring training. |
| Dec 12, 2020 | Signed as free agent | Nick Ramirez | — | San Diego Padres | San Diego Padres signed free agent P Nick Ramirez. |
| Dec 12, 2020 | Signed as free agent | Ryan LaMarre | — | New York Yankees | New York Yankees signed free agent LF Ryan LaMarre. |
| Dec 12, 2020 | Signed as free agent | Rob Brantly | — | New York Yankees | New York Yankees signed free agent C Rob Brantly. |
| Dec 12, 2020 | Signed as free agent | Luis García | — | New York Yankees | New York Yankees signed free agent P Luis Garcia. |
| Dec 12, 2020 | Signed as free agent | Ian Krol | — | Detroit Tigers | Detroit Tigers signed free agent P Ian Krol. |
| Dec 11, 2020 | Trade | Leo Crawford | Los Angeles Dodgers | Milwaukee Brewers | Los Angeles Dodgers traded LHP Leo Crawford to Milwaukee Brewers. |
| Dec 11, 2020 | Signed as free agent | Jimmy Herget | — | Texas Rangers | Texas Rangers signed free agent RHP Jimmy Herget. |
| Dec 11, 2020 | Signed as free agent | R.J. Alaniz | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP R.J. Alaniz to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | Joe Harvey | — | Colorado Rockies | Colorado Rockies signed free agent RHP Joe Harvey to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | Zac Rosscup | — | Colorado Rockies | Colorado Rockies signed free agent LHP Zac Rosscup to a minor league contract. |
| Dec 11, 2020 | Signed as free agent | Hunter Stovall | — | Colorado Rockies | Colorado Rockies signed free agent 2B Hunter Stovall to a minor league contract. |
| Dec 11, 2020 | Signed as free agent | Dilmer Mejia | — | Chicago White Sox | Chicago White Sox signed free agent LHP Dilmer Mejia to a minor league contract. |
| Dec 11, 2020 | Signed as free agent | Foster Griffin | — | Kansas City Royals | Kansas City Royals signed free agent LHP Foster Griffin to a minor league contract. |
| Dec 11, 2020 | Signed as free agent | Carlos Sanabria | — | Kansas City Royals | Kansas City Royals signed free agent RHP Carlos Sanabria to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | Bubba Starling | — | Kansas City Royals | Kansas City Royals signed free agent CF Bubba Starling to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | James Pazos | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP James Pazos to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | Andrew Schwaab | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Andrew Schwaab to a minor league contract. |
| Dec 11, 2020 | Signed as free agent | Lucas Luetge | — | New York Yankees | New York Yankees signed free agent LHP Lucas Luetge to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | Jesse Biddle | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Jesse Biddle to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | Mike Ahmed | — | Seattle Mariners | Seattle Mariners signed free agent 3B Mike Ahmed to a minor league contract. |
| Dec 11, 2020 | Signed as free agent | Ryan Scott | — | Seattle Mariners | Seattle Mariners signed free agent C Ryan Scott to a minor league contract. |
| Dec 11, 2020 | Signed as free agent | Brandon Morrow | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Brandon Morrow to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | Jimmy Nelson | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Jimmy Nelson to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | Jimmy Nelson | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Jimmy Nelson to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | Brandon Morrow | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Brandon Morrow to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | James Pazos | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP James Pazos to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | Bubba Starling | — | Kansas City Royals | Kansas City Royals signed free agent CF Bubba Starling to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | Carlos Sanabria | — | Kansas City Royals | Kansas City Royals signed free agent RHP Carlos Sanabria to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | Joe Harvey | — | Colorado Rockies | Colorado Rockies signed free agent RHP Joe Harvey to a minor league contract and invited him to spring training. |
| Dec 11, 2020 | Signed as free agent | Lucas Luetge | — | New York Yankees | New York Yankees signed free agent P Lucas Luetge. |
| Dec 11, 2020 | Signed as free agent | James Pazos | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent P James Pazos. |
| Dec 11, 2020 | Signed as free agent | Brandon Morrow | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent P Brandon Morrow. |
| Dec 11, 2020 | Signed as free agent | Bubba Starling | — | Kansas City Royals | Kansas City Royals signed free agent CF Bubba Starling. |
| Dec 11, 2020 | Signed as free agent | Carlos Sanabria | — | Kansas City Royals | Kansas City Royals signed free agent P Carlos Sanabria. |
| Dec 11, 2020 | Signed as free agent | Joe Harvey | — | Colorado Rockies | Colorado Rockies signed free agent P Joe Harvey. |
| Dec 11, 2020 | Signed as free agent | Zac Rosscup | — | Colorado Rockies | Colorado Rockies signed free agent P Zac Rosscup. |
| Dec 11, 2020 | Signed as free agent | R.J. Alaniz | — | Cincinnati Reds | Cincinnati Reds signed free agent P R.J. Alaniz. |
| Dec 10, 2020 | Signed as free agent | Adam Eaton | — | Chicago White Sox | Chicago White Sox signed free agent RF Adam Eaton. |
| Dec 10, 2020 | Trade | Luis Oviedo | New York Mets | Pittsburgh Pirates | New York Mets traded RHP Luis Oviedo to Pittsburgh Pirates for cash. |
| Dec 10, 2020 | Trade | Heriberto Hernández | Texas Rangers | Tampa Bay Rays | Tampa Bay Rays traded 1B Nate Lowe, 1B Jake Guenther and Player To Be Named Later to Texas Rangers for C Heriberto Hernandez, SS Osleivis Basabe and RF Alexander Ovalles. |
| Dec 10, 2020 | Trade | Zach Pop | Arizona Diamondbacks | Miami Marlins | Arizona Diamondbacks traded RHP Zach Pop to Miami Marlins for Player To Be Named Later. |
| Dec 10, 2020 | Trade | Leo Rivas | Los Angeles Angels | Cincinnati Reds | Los Angeles Angels traded SS Leonardo Rivas to Cincinnati Reds. |
| Dec 10, 2020 | Trade | Nathaniel Lowe | — | Texas Rangers | traded 1B Nate Lowe to Texas Rangers. |
| Dec 10, 2020 | Signed as free agent | Adam Eaton | — | Chicago White Sox | Chicago White Sox signed free agent CF Adam Eaton. |
| Dec 10, 2020 | Signed as free agent | Adam Eaton | — | Chicago White Sox | Chicago White Sox signed free agent CF Adam Eaton. |
| Dec 9, 2020 | Signed as free agent | Silvino Bracho | — | San Francisco Giants | San Francisco Giants signed free agent RHP Silvino Bracho to a minor league contract and invited him to spring training. |
| Dec 9, 2020 | Signed as free agent | Chadwick Tromp | — | San Francisco Giants | San Francisco Giants signed free agent C Chadwick Tromp. |
| Dec 9, 2020 | Signed as free agent | Dominic Leone | — | San Francisco Giants | San Francisco Giants signed free agent RHP Dominic Leone to a minor league contract and invited him to spring training. |
| Dec 9, 2020 | Signed as free agent | Yunior Marte | — | San Francisco Giants | San Francisco Giants signed free agent RHP Yunior Marte to a minor league contract and invited him to spring training. |
| Dec 9, 2020 | Signed as free agent | Francisco Peña | — | Athletics | Oakland Athletics signed free agent C Francisco Pena to a minor league contract and invited him to spring training. |
| Dec 9, 2020 | Signed as free agent | Yunior Marte | — | San Francisco Giants | San Francisco Giants signed free agent RHP Yunior Marte to a minor league contract and invited him to spring training. |
| Dec 9, 2020 | Signed as free agent | Dominic Leone | — | San Francisco Giants | San Francisco Giants signed free agent RHP Dominic Leone to a minor league contract and invited him to spring training. |
| Dec 9, 2020 | Signed as free agent | Silvino Bracho | — | San Francisco Giants | San Francisco Giants signed free agent RHP Silvino Bracho to a minor league contract and invited him to spring training. |
| Dec 9, 2020 | Signed as free agent | Yunior Marte | — | San Francisco Giants | San Francisco Giants signed free agent P Yunior Marte. |
| Dec 9, 2020 | Signed as free agent | Dominic Leone | — | San Francisco Giants | San Francisco Giants signed free agent P Dominic Leone. |
| Dec 9, 2020 | Signed as free agent | Silvino Bracho | — | San Francisco Giants | San Francisco Giants signed free agent P Silvino Bracho. |
| Dec 9, 2020 | Signed as free agent | Francisco Peña | — | Athletics | Oakland Athletics signed free agent C Francisco Pena. |
| Dec 8, 2020 | Trade | Avery Weems | Chicago White Sox | Texas Rangers | Texas Rangers traded RHP Lance Lynn to Chicago White Sox for LHP Avery Weems and RHP Dane Dunning. |
| Dec 8, 2020 | Signed as free agent | Cheslor Cuthbert | — | Cincinnati Reds | Cincinnati Reds signed free agent 3B Cheslor Cuthbert to a minor league contract and invited him to spring training. |
| Dec 8, 2020 | Signed as free agent | Dwight Smith Jr. | — | Cincinnati Reds | Cincinnati Reds signed free agent LF Dwight Smith to a minor league contract and invited him to spring training. |
| Dec 8, 2020 | Signed as free agent | Luke Maile | — | Milwaukee Brewers | Milwaukee Brewers signed free agent C Luke Maile. |
| Dec 8, 2020 | Signed as free agent | Carlos Santana | — | Kansas City Royals | Kansas City Royals signed free agent 1B Carlos Santana. |
| Dec 8, 2020 | Signed as free agent | Brian O'Grady | — | San Diego Padres | San Diego Padres signed free agent OF Brian O'Grady. |
| Dec 8, 2020 | Signed as free agent | Matt Wisler | — | San Francisco Giants | San Francisco Giants signed free agent RHP Matt Wisler. |
| Dec 8, 2020 | Signed as free agent | César Puello | — | Boston Red Sox | Boston Red Sox signed free agent OF Cesar Puello to a minor league contract and invited him to spring training. |
| Dec 8, 2020 | Signed as free agent | Derian González | — | Atlanta Braves | Atlanta Braves signed free agent RHP Derian Gonzalez to a minor league contract. |
| Dec 8, 2020 | Signed as free agent | Matt Wisler | — | San Francisco Giants | San Francisco Giants signed free agent RHP Matt Wisler. |
| Dec 8, 2020 | Signed as free agent | Luke Maile | — | Milwaukee Brewers | Milwaukee Brewers signed free agent C Luke Maile. |
| Dec 8, 2020 | Trade | Lance Lynn | — | Chicago White Sox | traded to Chicago White Sox for . |
| Dec 8, 2020 | Signed as free agent | César Puello | — | Boston Red Sox | Boston Red Sox signed free agent OF Cesar Puello to a minor league contract and invited him to spring training. |
| Dec 8, 2020 | Signed as free agent | Dwight Smith Jr. | — | Cincinnati Reds | Cincinnati Reds signed free agent LF Dwight Smith Jr.. |
| Dec 8, 2020 | Signed as free agent | Cheslor Cuthbert | — | Cincinnati Reds | Cincinnati Reds signed free agent 3B Cheslor Cuthbert. |
| Dec 8, 2020 | Signed as free agent | César Puello | — | Boston Red Sox | Boston Red Sox signed free agent RF Cesar Puello. |
| Dec 8, 2020 | Signed as free agent | Carlos Santana | — | Kansas City Royals | Kansas City Royals signed free agent 1B Carlos Santana. |
| Dec 8, 2020 | Signed as free agent | Matt Wisler | — | San Francisco Giants | San Francisco Giants signed free agent P Matt Wisler. |
| Dec 8, 2020 | Signed as free agent | Unnamed | — | Kansas City Royals | Kansas City Royals signed free agent 1B Carlos Santana, and. |
| Dec 8, 2020 | Signed as free agent | Matt Wisler | — | San Francisco Giants | San Francisco Giants signed free agent RHP Matt Wisler. |
| Dec 7, 2020 | Trade | Raisel Iglesias | Cincinnati Reds | Los Angeles Angels | Cincinnati Reds traded RHP Raisel Iglesias and cash to Los Angeles Angels for RHP Noe Ramirez and Future Considerations. |
| Dec 7, 2020 | Signed as free agent | Clay Holmes | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Clay Holmes to a minor league contract and invited him to spring training. |
| Dec 7, 2020 | Signed as free agent | Sean Kazmar Jr. | — | Atlanta Braves | Atlanta Braves signed free agent SS Sean Kazmar Jr. to a minor league contract and invited him to spring training. |
| Dec 7, 2020 | Signed as free agent | Clay Holmes | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent P Clay Holmes. |
| Dec 7, 2020 | Signed as free agent | Sean Kazmar Jr. | — | Atlanta Braves | Atlanta Braves signed free agent SS Sean Kazmar Jr.. |
| Dec 4, 2020 | Signed as free agent | Melvin Adón | — | San Francisco Giants | San Francisco Giants signed free agent RHP Melvin Adon to a minor league contract and invited him to spring training. |
| Dec 4, 2020 | 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 4, 2020 | Signed as free agent | Melvin Adón | — | San Francisco Giants | San Francisco Giants signed free agent RHP Melvin Adon to a minor league contract and invited him to spring training. |
| Dec 4, 2020 | 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 4, 2020 | Signed as free agent | Narciso Crook | — | Cincinnati Reds | Cincinnati Reds signed free agent CF Narciso Crook. |
| Dec 4, 2020 | Signed as free agent | Narciso Crook | — | Cincinnati Reds | Cincinnati Reds signed free agent CF Narciso Crook. |
| Dec 3, 2020 | Signed as free agent | Joe Gatto | — | Texas Rangers | Texas Rangers signed free agent RHP Joe Gatto. |
| Dec 3, 2020 | Signed as free agent | Scott Heineman | — | Texas Rangers | Texas Rangers signed free agent RF Scott Heineman. |
| Dec 3, 2020 | Signed as free agent | Sam Travis | — | Seattle Mariners | Seattle Mariners signed free agent 1B Sam Travis to a minor league contract. |
| Dec 3, 2020 | Trade | Yoan Aybar | Boston Red Sox | Colorado Rockies | Boston Red Sox traded LHP Yoan Aybar to Colorado Rockies for SS Christian Koss. |
| Dec 3, 2020 | Signed as free agent | Conner Greene | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Conner Greene to a minor league contract and invited him to spring training. |
| Dec 3, 2020 | Signed as free agent | Michael De León | — | Cincinnati Reds | Cincinnati Reds signed free agent SS Michael De Leon to a minor league contract. |
| Dec 3, 2020 | Signed as free agent | Jason Creasy | — | Atlanta Braves | Atlanta Braves signed free agent RHP Jason Creasy to a minor league contract and invited him to spring training. |
| Dec 3, 2020 | Signed as free agent | Tzu-Wei Lin | — | Minnesota Twins | Minnesota Twins signed free agent 2B Tzu-Wei Lin to a minor league contract and invited him to spring training. |
| Dec 3, 2020 | Released | Cy Sneed | — | Houston Astros | Houston Astros released RHP Cy Sneed. |
| Dec 3, 2020 | Signed as free agent | Rico Garcia | — | San Francisco Giants | San Francisco Giants signed free agent RHP Rico Garcia to a minor league contract and invited him to spring training. |
| Dec 3, 2020 | Signed as free agent | Rico Garcia | — | San Francisco Giants | San Francisco Giants signed free agent RHP Rico Garcia to a minor league contract and invited him to spring training. |
| Dec 3, 2020 | Signed as free agent | Tzu-Wei Lin | — | Minnesota Twins | Minnesota Twins signed free agent 2B Tzu-Wei Lin to a minor league contract and invited him to spring training. |
| Dec 3, 2020 | Signed as free agent | Conner Greene | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Conner Greene to a minor league contract and invited him to spring training. |
| Dec 3, 2020 | Signed as free agent | Rico Garcia | — | San Francisco Giants | San Francisco Giants signed free agent P Rico Garcia. |
| Dec 3, 2020 | Signed as free agent | Tzu-Wei Lin | — | Minnesota Twins | Minnesota Twins signed free agent SS Tzu-Wei Lin. |
| Dec 3, 2020 | Signed as free agent | Conner Greene | — | Baltimore Orioles | Baltimore Orioles signed free agent P Conner Greene. |
| Dec 2, 2020 | Signed as free agent | Trevor May | — | New York Mets | New York Mets signed free agent RHP Trevor May. |
| Dec 2, 2020 | Trade | Jean Pinto | Los Angeles Angels | Baltimore Orioles | Baltimore Orioles traded SS Jose Iglesias to Los Angeles Angels for RHP Garrett Stallings and RHP Jean Pinto. |
| Dec 2, 2020 | Trade | Corey Knebel | Milwaukee Brewers | Los Angeles Dodgers | Milwaukee Brewers traded RHP Corey Knebel to Los Angeles Dodgers for Future Considerations. Leo Crawford sent to Brewers to complete trade, 12/11/2020 |
| Dec 2, 2020 | Signed as free agent | Kyle Farmer | — | Cincinnati Reds | Cincinnati Reds signed free agent 2B Kyle Farmer. |
| Dec 2, 2020 | Signed as free agent | Zach Green | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 1B Zach Green to a minor league contract and invited him to spring training. |
| Dec 2, 2020 | Signed as free agent | Zach Green | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 1B Zach Green to a minor league contract and invited him to spring training. |
| Dec 2, 2020 | Signed as free agent | Zach Green | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 3B Zach Green. |
| Dec 2, 2020 | Signed as free agent | Trevor May | — | New York Mets | New York Mets signed free agent P Trevor May. |
| Dec 2, 2020 | Signed as free agent | Trevor May | — | New York Mets | New York Mets signed free agent P Trevor May. |
| Dec 2, 2020 | Signed as free agent | Trevor May | — | New York Mets | New York Mets signed free agent RHP Trevor May. |
| Dec 2, 2020 | Signed as free agent | Trevor May | — | New York Mets | New York Mets signed free agent RHP Trevor May, and. |
| Dec 1, 2020 | Signed as free agent | Mike Minor | — | Kansas City Royals | Kansas City Royals signed free agent LHP Mike Minor. |
| Dec 1, 2020 | Signed as free agent | Alejandro Requena | — | Seattle Mariners | Seattle Mariners signed free agent RHP Alejandro Requena to a minor league contract. |
| Dec 1, 2020 | Signed as free agent | Mike Minor | — | Kansas City Royals | Kansas City Royals signed free agent P Mike Minor. |
| Dec 1, 2020 | Signed as free agent | Mike Minor | — | Kansas City Royals | Kansas City Royals signed free agent P Mike Minor. |
| Nov 30, 2020 | Signed as free agent | Michael A. Taylor | — | Kansas City Royals | Kansas City Royals signed free agent CF Michael A. Taylor. |
| Nov 30, 2020 | Trade | Adam Cimber | Cleveland Guardians | Miami Marlins | Cleveland Indians traded RHP Adam Cimber to Miami Marlins for cash. |
| Nov 30, 2020 | Signed as free agent | Kevin Josephina | — | Atlanta Braves | Atlanta Braves signed free agent 2B Kevin Josephina to a minor league contract. |
| Nov 30, 2020 | Signed as free agent | Anthony Bender | — | Miami Marlins | Miami Marlins signed free agent RHP Anthony Bender to a minor league contract. |
| Nov 30, 2020 | Signed as free agent | Trevor Hildenberger | — | New York Mets | New York Mets signed free agent RHP Trevor Hildenberger to a minor league contract and invited him to spring training. |
| Nov 30, 2020 | Signed as free agent | Trevor Hildenberger | — | New York Mets | New York Mets signed free agent P Trevor Hildenberger. |
| Nov 30, 2020 | Signed as free agent | Michael A. Taylor | — | Kansas City Royals | Kansas City Royals signed free agent CF Michael A. Taylor. |
| Nov 30, 2020 | Signed as free agent | Michael A. Taylor | — | Kansas City Royals | Kansas City Royals signed free agent CF Michael A. Taylor. |
| Nov 25, 2020 | Trade | Case Williams | Colorado Rockies | Cincinnati Reds | Cincinnati Reds traded RHP Robert Stephenson and CF Jameson Hannah to Colorado Rockies for RHP Jeff Hoffman and RHP Case Williams. |
| Nov 24, 2020 | Signed as free agent | Charlie Morton | — | Atlanta Braves | Atlanta Braves signed free agent RHP Charlie Morton. |
| Nov 24, 2020 | Signed as free agent | Charlie Morton | — | Atlanta Braves | Atlanta Braves signed free agent P Charlie Morton. |
| Nov 24, 2020 | Signed as free agent | Charlie Morton | — | Atlanta Braves | Atlanta Braves signed free agent RHP Charlie Morton. |
| Nov 23, 2020 | Released | Renato Núñez | — | Baltimore Orioles | Baltimore Orioles released 3B Renato Nunez. |
| Nov 23, 2020 | Released | Glenn Sparkman | — | Kansas City Royals | Kansas City Royals released RHP Glenn Sparkman. |
| Nov 23, 2020 | Released | Brian O'Grady | — | Tampa Bay Rays | Tampa Bay Rays released 1B Brian O'Grady. |
| Nov 23, 2020 | Released | Junior Guerra | — | Arizona Diamondbacks | Arizona Diamondbacks released RHP Junior Guerra. |
| Nov 23, 2020 | Released | José Osuna | — | Pittsburgh Pirates | Pittsburgh Pirates released 3B Jose Osuna. |
| Nov 23, 2020 | Released | Luis Perdomo | — | San Diego Padres | San Diego Padres released RHP Luis Perdomo. |
| Nov 23, 2020 | Signed as free agent | Jake Faria | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Jake Faria to a minor league contract and invited him to spring training. |
| Nov 23, 2020 | Signed as free agent | Boomer Biegalski | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Boomer Biegalski to a minor league contract. |
| Nov 23, 2020 | Signed as free agent | Luís Madero | — | Miami Marlins | Miami Marlins signed free agent RHP Luis Madero to a minor league contract and invited him to spring training. |
| Nov 23, 2020 | Signed as free agent | Rob Refsnyder | — | Minnesota Twins | Minnesota Twins signed free agent LF Rob Refsnyder to a minor league contract and invited him to spring training. |
| Nov 23, 2020 | Signed as free agent | Zach Thompson | — | Miami Marlins | Miami Marlins signed free agent RHP Zach Thompson to a minor league contract and invited him to spring training. |
| Nov 23, 2020 | Signed as free agent | Rob Refsnyder | — | Minnesota Twins | Minnesota Twins signed free agent LF Rob Refsnyder to a minor league contract and invited him to spring training. |
| Nov 23, 2020 | Signed as free agent | Zach Thompson | — | Miami Marlins | Miami Marlins signed free agent RHP Zach Thompson to a minor league contract and invited him to spring training. |
| Nov 23, 2020 | Signed as free agent | Luís Madero | — | Miami Marlins | Miami Marlins signed free agent RHP Luis Madero to a minor league contract and invited him to spring training. |
| Nov 23, 2020 | Signed as free agent | Jake Faria | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Jake Faria to a minor league contract and invited him to spring training. |
| Nov 23, 2020 | Signed as free agent | Rob Refsnyder | — | Minnesota Twins | Minnesota Twins signed free agent 2B Rob Refsnyder. |
| Nov 23, 2020 | Signed as free agent | Zach Thompson | — | Miami Marlins | Miami Marlins signed free agent P Zach Thompson. |
| Nov 23, 2020 | Signed as free agent | Luís Madero | — | Miami Marlins | Miami Marlins signed free agent P Luis Madero. |
| Nov 23, 2020 | Signed as free agent | Jake Faria | — | Los Angeles Angels | Los Angeles Angels signed free agent P Jake Faria. |
| Nov 20, 2020 | Signed as free agent | Sam McWilliams | — | New York Mets | New York Mets signed free agent RHP Sam McWilliams. |
| Nov 20, 2020 | Signed as free agent | Trey Supak | — | Athletics | Oakland Athletics signed free agent RHP Trey Supak to a minor league contract and invited him to spring training. |
| Nov 20, 2020 | Trade | Brandon Bailey | Houston Astros | Cincinnati Reds | Houston Astros traded RHP Brandon Bailey to Cincinnati Reds for cash. |
| Nov 20, 2020 | Trade | Fredy Medina | Houston Astros | Cincinnati Reds | Houston Astros traded RHP Fredy Medina to Cincinnati Reds. |
| Nov 20, 2020 | Signed as free agent | Scott Schebler | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Scott Schebler to a minor league contract and invited him to spring training. |
| Nov 20, 2020 | Signed as free agent | Jared Robinson | — | New York Mets | New York Mets signed free agent RHP Jared Robinson to a minor league contract and invited him to spring training. |
| Nov 20, 2020 | Signed as free agent | Aaron Barrett | — | Washington Nationals | Washington Nationals signed free agent RHP Aaron Barrett to a minor league contract and invited him to spring training. |
| Nov 20, 2020 | Signed as free agent | José Godoy | — | Seattle Mariners | Seattle Mariners signed free agent C Jose Godoy to a minor league contract. |
| Nov 20, 2020 | Signed as free agent | Josh Morgan | — | Seattle Mariners | Seattle Mariners signed free agent C Josh Morgan to a minor league contract. |
| Nov 20, 2020 | Signed as free agent | Drew Steckenrider | — | Seattle Mariners | Seattle Mariners signed free agent RHP Drew Steckenrider to a minor league contract. |
| Nov 20, 2020 | Signed as free agent | Gerson Garabito | — | San Francisco Giants | San Francisco Giants signed free agent RHP Gerson Garabito to a minor league contract. |
| Nov 20, 2020 | Signed as free agent | Scott Schebler | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Scott Schebler to a minor league contract and invited him to spring training. |
| Nov 20, 2020 | Signed as free agent | Aaron Barrett | — | Washington Nationals | Washington Nationals signed free agent P Aaron Barrett. |
| Nov 20, 2020 | Signed as free agent | Jared Robinson | — | New York Mets | New York Mets signed free agent P Jared Robinson. |
| Nov 20, 2020 | Signed as free agent | Scott Schebler | — | Los Angeles Angels | Los Angeles Angels signed free agent RF Scott Schebler. |
| Nov 20, 2020 | Signed as free agent | Jose Disla | — | Boston Red Sox | Boston Red Sox signed free agent RHP Jose Disla to a minor league contract. |
| Nov 19, 2020 | Released | Brandon Dixon | — | Detroit Tigers | Detroit Tigers released 1B Brandon Dixon. |
| Nov 19, 2020 | Signed as free agent | Drew Weeks | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Drew Weeks to a minor league contract and invited him to spring training. |
| Nov 19, 2020 | Signed as free agent | Drew Weeks | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Drew Weeks to a minor league contract and invited him to spring training. |
| Nov 18, 2020 | Signed as free agent | Sam Clay | — | Washington Nationals | Washington Nationals signed free agent LHP Samuel Clay. |
| Nov 18, 2020 | Signed as free agent | Wilson Garcia | — | Cincinnati Reds | Cincinnati Reds signed free agent 1B Wilson Garcia to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Sam Moll | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Sam Moll to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Bradley Roney | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Bradley Roney to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Michael Gettys | — | Boston Red Sox | Boston Red Sox signed free agent OF Michael Gettys to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Enmanuel De Jesus | — | Boston Red Sox | Boston Red Sox signed free agent LHP Enmanuel De Jesus to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Ian Miller | — | Chicago Cubs | Chicago Cubs signed free agent OF Ian Miller to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Anthony Gose | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Anthony Gose to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Brian Gonzalez | — | Colorado Rockies | Colorado Rockies signed free agent LHP Brian Gonzalez to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Dereck Rodríguez | — | Colorado Rockies | Colorado Rockies signed free agent RHP Dereck Rodriguez to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Anderson Severino | — | Chicago White Sox | Chicago White Sox signed free agent LHP Anderson Severino to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Alexander Guillen | — | Miami Marlins | Miami Marlins signed free agent RHP Alexander Guillen to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Danny Coulombe | — | Minnesota Twins | Minnesota Twins signed free agent LHP Danny Coulombe to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Luis Aviles Jr. | — | Los Angeles Angels | Los Angeles Angels signed free agent SS Luis Aviles Jr. to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Jhonathan Díaz | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Jhonathan Diaz to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Ray-Patrick Didder | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Ray-Patrick Didder to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Ibandel Isabel | — | Los Angeles Angels | Los Angeles Angels signed free agent 1B Ibandel Isabel to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Brendan McCurry | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Brendan McCurry to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Jake Reed | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Jake Reed to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Hansel Rodriguez | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Hansel Rodriguez to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Yordi Rosario | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Yordi Rosario to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Izzy Wilson | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Izzy Wilson to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Kean Wong | — | Los Angeles Angels | Los Angeles Angels signed free agent 2B Kean Wong to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Michael Beltre | — | New York Yankees | New York Yankees signed free agent OF Michael Beltre to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Cristian Alvarado | — | Athletics | Oakland Athletics signed free agent RHP Cristian Alvarado to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Ben Bracewell | — | Athletics | Oakland Athletics signed free agent RHP Ben Bracewell to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Pete Kozma | — | Athletics | Oakland Athletics signed free agent SS Pete Kozma to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Frank Schwindel | — | Athletics | Oakland Athletics signed free agent 1B Frank Schwindel to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | José Azócar | — | San Diego Padres | San Diego Padres signed free agent OF Jose Azocar to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Yohel Pozo | — | San Diego Padres | San Diego Padres signed free agent C Yohel Pozo to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Parker Markel | — | San Diego Padres | San Diego Padres signed free agent RHP Parker Markel to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Nick Tanielu | — | San Diego Padres | San Diego Padres signed free agent 3B Nick Tanielu to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Gerson Bautista | — | Seattle Mariners | Seattle Mariners signed free agent RHP Gerson Bautista to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Matt Magill | — | Seattle Mariners | Seattle Mariners signed free agent RHP Matt Magill to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Jason Krizan | — | San Francisco Giants | San Francisco Giants signed free agent OF Jason Krizan to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Sam Long | — | San Francisco Giants | San Francisco Giants signed free agent LHP Sam Long to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Jose Gomez | — | Colorado Rockies | Colorado Rockies signed free agent 3B Jose Gomez to a minor league contract. |
| Nov 17, 2020 | Signed as free agent | Jason Krizan | — | San Francisco Giants | San Francisco Giants signed free agent 1B Jason Krizan to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Sam Long | — | San Francisco Giants | San Francisco Giants signed free agent LHP Sam Long to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Nick Tanielu | — | San Diego Padres | San Diego Padres signed free agent 3B Nick Tanielu to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Danny Coulombe | — | Minnesota Twins | Minnesota Twins signed free agent LHP Danny Coulombe to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Alexander Guillen | — | Miami Marlins | Miami Marlins signed free agent RHP Alexander Guillen to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Kean Wong | — | Los Angeles Angels | Los Angeles Angels signed free agent 2B Kean Wong to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Jake Reed | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Jake Reed to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Brendan McCurry | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Brendan McCurry to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Ian Miller | — | Chicago Cubs | Chicago Cubs signed free agent OF Ian Miller to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Michael Gettys | — | Boston Red Sox | Boston Red Sox signed free agent OF Michael Gettys to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Bradley Roney | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Bradley Roney to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Sam Moll | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Sam Moll to a minor league contract and invited him to spring training. |
| Nov 17, 2020 | Signed as free agent | Jason Krizan | — | San Francisco Giants | San Francisco Giants signed free agent LF Jason Krizan. |
| Nov 17, 2020 | Signed as free agent | Sam Long | — | San Francisco Giants | San Francisco Giants signed free agent P Sam Long. |
| Nov 17, 2020 | Signed as free agent | Nick Tanielu | — | San Diego Padres | San Diego Padres signed free agent 3B Nick Tanielu. |
| Nov 17, 2020 | Signed as free agent | Pete Kozma | — | Athletics | Oakland Athletics signed free agent SS Pete Kozma. |
| Nov 17, 2020 | Signed as free agent | Ben Bracewell | — | Athletics | Oakland Athletics signed free agent P Ben Bracewell. |
| Nov 17, 2020 | Signed as free agent | Michael Beltre | — | New York Yankees | New York Yankees signed free agent LF Michael Beltre. |
| Nov 17, 2020 | Signed as free agent | Danny Coulombe | — | Minnesota Twins | Minnesota Twins signed free agent P Danny Coulombe. |
| Nov 17, 2020 | Signed as free agent | Alexander Guillen | — | Miami Marlins | Miami Marlins signed free agent P Alexander Guillen. |
| Nov 17, 2020 | Signed as free agent | Kean Wong | — | Los Angeles Angels | Los Angeles Angels signed free agent 2B Kean Wong. |
| Nov 17, 2020 | Signed as free agent | Jake Reed | — | Los Angeles Angels | Los Angeles Angels signed free agent P Jake Reed. |
| Nov 17, 2020 | Signed as free agent | Jose Gomez | — | Colorado Rockies | Colorado Rockies signed free agent 3B Jose Gomez. |
| Nov 17, 2020 | Signed as free agent | Anthony Gose | — | Cleveland Guardians | Cleveland Indians signed free agent CF Anthony Gose. |
| Nov 17, 2020 | Signed as free agent | Michael Gettys | — | Boston Red Sox | Boston Red Sox signed free agent CF Michael Gettys. |
| Nov 17, 2020 | Signed as free agent | Sam Moll | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent P Sam Moll. |
| Nov 16, 2020 | Trade | Miguel Padilla | Houston Astros | Baltimore Orioles | Houston Astros traded RHP Miguel Padilla to Baltimore Orioles. |
| Nov 16, 2020 | Signed as free agent | Drew Smyly | — | Atlanta Braves | Atlanta Braves signed free agent LHP Drew Smyly. |
| Nov 16, 2020 | Signed as free agent | Emmanuel Ramirez | — | Atlanta Braves | Atlanta Braves signed free agent RHP Emmanuel Ramirez to a minor league contract. |
| Nov 16, 2020 | Signed as free agent | Jake Jewell | — | Chicago Cubs | Chicago Cubs signed free agent RHP Jake Jewell to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Kevin McCarthy | — | Boston Red Sox | Boston Red Sox signed free agent RHP Kevin McCarthy to a minor league contract. |
| Nov 16, 2020 | Signed as free agent | Taylor Gushue | — | Chicago Cubs | Chicago Cubs signed free agent C Taylor Gushue to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Rafael Ortega | — | Chicago Cubs | Chicago Cubs signed free agent OF Rafael Ortega to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Jerry Vasto | — | Chicago Cubs | Chicago Cubs signed free agent LHP Jerry Vasto to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Gosuke Katoh | — | San Diego Padres | San Diego Padres signed free agent 2B Gosuke Katoh to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Ty Greene | — | Los Angeles Angels | Los Angeles Angels signed free agent C Ty Greene to a minor league contract. |
| Nov 16, 2020 | Signed as free agent | Argenis Angulo | — | Athletics | Oakland Athletics signed free agent RHP Argenis Angulo to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Matt Blackham | — | Athletics | Oakland Athletics signed free agent RHP Matt Blackham to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Montana DuRapau | — | Athletics | Oakland Athletics signed free agent RHP Montana DuRapau to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | René Pinto | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Rene Pinto to a minor league contract. |
| Nov 16, 2020 | Signed as free agent | Brady Lail | — | Seattle Mariners | Seattle Mariners signed free agent RHP Brady Lail to a minor league contract. |
| Nov 16, 2020 | Signed as free agent | Matt Merrill | — | Washington Nationals | Washington Nationals signed free agent RHP Matthew Merrill to a minor league contract. |
| Nov 16, 2020 | Signed as free agent | Domingo Acevedo | — | Athletics | Oakland Athletics signed free agent RHP Domingo Acevedo to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Daniel Álvarez | — | San Francisco Giants | San Francisco Giants signed free agent RHP Daniel Alvarez to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Andy Sugilio | — | San Francisco Giants | San Francisco Giants signed free agent OF Andy Sugilio to a minor league contract. |
| Nov 16, 2020 | Signed as free agent | D.J. Snelten | — | Chicago Cubs | Chicago Cubs signed free agent LHP D.J. Snelten to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Thomas Pannone | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Thomas Pannone to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | José Briceño | — | Colorado Rockies | Colorado Rockies signed free agent C Jose Briceno to a minor league contract. |
| Nov 16, 2020 | Signed as free agent | Daniel Álvarez | — | San Francisco Giants | San Francisco Giants signed free agent RHP Daniel Alvarez to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Gosuke Katoh | — | San Diego Padres | San Diego Padres signed free agent 2B Gosuke Katoh to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Thomas Pannone | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Thomas Pannone to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Rafael Ortega | — | Chicago Cubs | Chicago Cubs signed free agent OF Rafael Ortega to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Taylor Gushue | — | Chicago Cubs | Chicago Cubs signed free agent C Taylor Gushue to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Jerry Vasto | — | Chicago Cubs | Chicago Cubs signed free agent LHP Jerry Vasto to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | D.J. Snelten | — | Chicago Cubs | Chicago Cubs signed free agent LHP D.J. Snelten to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Jake Jewell | — | Chicago Cubs | Chicago Cubs signed free agent RHP Jake Jewell to a minor league contract and invited him to spring training. |
| Nov 16, 2020 | Signed as free agent | Daniel Álvarez | — | San Francisco Giants | San Francisco Giants signed free agent P Daniel Alvarez. |
| Nov 16, 2020 | Signed as free agent | Gosuke Katoh | — | San Diego Padres | San Diego Padres signed free agent 2B Gosuke Katoh. |
| Nov 16, 2020 | Signed as free agent | Montana DuRapau | — | Athletics | Oakland Athletics signed free agent P Montana DuRapau. |
| Nov 16, 2020 | Signed as free agent | Matt Blackham | — | Athletics | Oakland Athletics signed free agent P Matt Blackham. |
| Nov 16, 2020 | Signed as free agent | Argenis Angulo | — | Athletics | Oakland Athletics signed free agent P Argenis Angulo. |
| Nov 16, 2020 | Signed as free agent | Domingo Acevedo | — | Athletics | Oakland Athletics signed free agent P Domingo Acevedo. |
| Nov 16, 2020 | Signed as free agent | Thomas Pannone | — | Los Angeles Angels | Los Angeles Angels signed free agent P Thomas Pannone. |
| Nov 16, 2020 | Signed as free agent | Rafael Ortega | — | Chicago Cubs | Chicago Cubs signed free agent LF Rafael Ortega. |
| Nov 16, 2020 | Signed as free agent | Taylor Gushue | — | Chicago Cubs | Chicago Cubs signed free agent C Taylor Gushue. |
| Nov 16, 2020 | Signed as free agent | D.J. Snelten | — | Chicago Cubs | Chicago Cubs signed free agent P D.J. Snelten. |
| Nov 16, 2020 | Signed as free agent | Jake Jewell | — | Chicago Cubs | Chicago Cubs signed free agent P Jake Jewell. |
| Nov 16, 2020 | Signed as free agent | Drew Smyly | — | Atlanta Braves | Atlanta Braves signed free agent P Drew Smyly. |
| Nov 16, 2020 | Signed as free agent | Ricardo Sánchez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent LHP Ricardo Sanchez to a minor league contract. |
| Nov 15, 2020 | Signed as free agent | Connor Joe | — | Colorado Rockies | Colorado Rockies signed free agent OF Connor Joe to a minor league contract and invited him to spring training. |
| Nov 15, 2020 | Signed as free agent | Connor Joe | — | Colorado Rockies | Colorado Rockies signed free agent 3B Connor Joe to a minor league contract and invited him to spring training. |
| Nov 15, 2020 | Signed as free agent | Connor Joe | — | Colorado Rockies | Colorado Rockies signed free agent 3B Connor Joe. |
| Nov 14, 2020 | Signed as free agent | Tyler Heineman | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C Tyler Heineman to a minor league contract and invited him to spring training. |
| Nov 14, 2020 | Signed as free agent | Yasmany Tomás | — | Washington Nationals | Washington Nationals signed free agent LF Yasmany Tomas to a minor league contract and invited him to spring training. |
| Nov 14, 2020 | Signed as free agent | Tyler Heineman | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C Tyler Heineman. |
| Nov 12, 2020 | Signed as free agent | Derek Law | — | Minnesota Twins | Minnesota Twins signed free agent RHP Derek Law to a minor league contract and invited him to spring training. |
| Nov 12, 2020 | Signed as free agent | Jacob Wilson | — | Athletics | Oakland Athletics signed free agent 3B Jacob Wilson to a minor league contract and invited him to spring training. |
| Nov 12, 2020 | Signed as free agent | Ian Clarkin | — | Colorado Rockies | Colorado Rockies signed free agent LHP Ian Clarkin to a minor league contract. |
| Nov 12, 2020 | Signed as free agent | Michael Hermosillo | — | Chicago Cubs | Chicago Cubs signed free agent CF Michael Hermosillo to a minor league contract and invited him to spring training. |
| Nov 12, 2020 | Signed as free agent | Derek Law | — | Minnesota Twins | Minnesota Twins signed free agent RHP Derek Law to a minor league contract and invited him to spring training. |
| Nov 12, 2020 | Signed as free agent | Michael Hermosillo | — | Chicago Cubs | Chicago Cubs signed free agent CF Michael Hermosillo to a minor league contract and invited him to spring training. |
| Nov 12, 2020 | Signed as free agent | Jacob Wilson | — | Athletics | Oakland Athletics signed free agent 2B Jacob Wilson. |
| Nov 12, 2020 | Signed as free agent | Derek Law | — | Minnesota Twins | Minnesota Twins signed free agent P Derek Law. |
| Nov 12, 2020 | Signed as free agent | Michael Hermosillo | — | Chicago Cubs | Chicago Cubs signed free agent RF Michael Hermosillo. |
| Nov 12, 2020 | Signed as free agent | Rafael Bautista | — | Washington Nationals | Washington Nationals signed free agent RF Rafael Bautista to a minor league contract. |
| Nov 12, 2020 | Signed as free agent | Jhonny Santos | — | Athletics | Oakland Athletics signed free agent CF Jhonny Santos to a minor league contract. |
| Nov 11, 2020 | Signed as free agent | Marcus Stroman | — | New York Mets | New York Mets signed free agent RHP Marcus Stroman. |
| Nov 11, 2020 | Signed as free agent | Kevin Gausman | — | San Francisco Giants | San Francisco Giants signed free agent RHP Kevin Gausman. |
| Nov 11, 2020 | Signed as free agent | Josh Tomlin | — | Atlanta Braves | Atlanta Braves signed free agent RHP Josh Tomlin. |
| Nov 11, 2020 | Signed as free agent | Marcus Stroman | — | New York Mets | New York Mets signed free agent P Marcus Stroman. |
| Nov 11, 2020 | Signed as free agent | Marcus Stroman | — | New York Mets | New York Mets signed free agent P Marcus Stroman. |
| Nov 11, 2020 | Signed as free agent | Kevin Gausman | — | San Francisco Giants | San Francisco Giants signed free agent P Kevin Gausman. |
| Nov 11, 2020 | Signed as free agent | Kevin Gausman | — | San Francisco Giants | San Francisco Giants signed free agent RHP Kevin Gausman. |
| Nov 11, 2020 | Signed as free agent | Marcus Stroman | — | New York Mets | New York Mets signed free agent RHP Marcus Stroman. |
| Nov 11, 2020 | Signed as free agent | Marcus Stroman | — | New York Mets | New York Mets signed free agent RHP Marcus Stroman. |
| Nov 10, 2020 | Signed as free agent | Jason Vosler | — | San Francisco Giants | San Francisco Giants signed free agent 3B Jason Vosler. |
| Nov 10, 2020 | Signed as free agent | Jason Vosler | — | San Francisco Giants | San Francisco Giants signed free agent 3B Jason Vosler. |
| Nov 9, 2020 | Trade | Matt Waldron | Cleveland Guardians | San Diego Padres | Cleveland Indians traded RHP Matt Waldron to San Diego Padres. |
| Nov 9, 2020 | Signed as free agent | Andruw Monasterio | — | Cleveland Guardians | Cleveland Indians signed free agent 2B Andruw Monasterio to a minor league contract. |
| Nov 9, 2020 | Signed as free agent | Juan Minaya | — | Minnesota Twins | Minnesota Twins signed free agent RHP Juan Minaya to a minor league contract and invited him to spring training. |
| Nov 9, 2020 | Signed as free agent | Juan Minaya | — | Minnesota Twins | Minnesota Twins signed free agent RHP Juan Minaya to a minor league contract and invited him to spring training. |
| Nov 9, 2020 | Signed as free agent | Juan Minaya | — | Minnesota Twins | Minnesota Twins signed free agent P Juan Minaya. |
| Nov 8, 2020 | Trade | Matt Waldron | Cleveland Guardians | San Diego Padres | Cleveland Indians traded Matt Waldron to San Diego Padres. |
| Nov 7, 2020 | Signed as free agent | Robbie Ray | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Robbie Ray. |
| Nov 6, 2020 | Signed as free agent | Vinny Nittoli | — | Seattle Mariners | Seattle Mariners signed free agent RHP Vinny Nittoli to a minor league contract. |
| Nov 6, 2020 | Signed as free agent | Moises Gomez | — | Seattle Mariners | Seattle Mariners signed free agent RHP Moises Gomez to a minor league contract. |
| Nov 5, 2020 | Trade | AJ Graffanino | Atlanta Braves | Baltimore Orioles | Atlanta Braves traded SS AJ Graffanino and 2B Greg Cullen to Baltimore Orioles. PTBNL in Tommy Milone trade, 8/30/2020 |
| Nov 5, 2020 | Trade | Ronny Simon | Chicago Cubs | Arizona Diamondbacks | Chicago Cubs traded SS Ronny Simon to Arizona Diamondbacks. PTBNL in Andrew Chafin trade, 8/31/2020 |
| Nov 5, 2020 | Trade | Rodolfo Sanchez | Tampa Bay Rays | Philadelphia Phillies | Tampa Bay Rays traded RHP Rodolfo Sanchez to Philadelphia Phillies. |
| Nov 5, 2020 | Trade | Junior Perez | San Diego Padres | Athletics | San Diego Padres traded CF Junior Perez to Oakland Athletics. PTBNL in Jorge Mateo trade, 6/29/20 |
| Nov 5, 2020 | Trade | Dylan Coleman | San Diego Padres | Kansas City Royals | San Diego Padres traded RHP Dylan Coleman to Kansas City Royals. |
| Nov 5, 2020 | Signed as free agent | Abiatal Avelino | — | Chicago Cubs | Chicago Cubs signed free agent SS Abiatal Avelino to a minor league contract and invited him to spring training. |
| Nov 5, 2020 | Signed as free agent | Abiatal Avelino | — | Chicago Cubs | Chicago Cubs signed free agent SS Abiatal Avelino to a minor league contract and invited him to spring training. |
| Nov 5, 2020 | Signed as free agent | Abiatal Avelino | — | Chicago Cubs | Chicago Cubs signed free agent SS Abiatal Avelino. |
| Nov 4, 2020 | Signed as free agent | Oscar De La Cruz | — | New York Mets | New York Mets signed free agent RHP Oscar De La Cruz to a minor league contract and invited him to spring training. |
| Nov 4, 2020 | Signed as free agent | José Peraza | — | New York Mets | New York Mets signed free agent SS Jose Peraza to a minor league contract and invited him to spring training. |
| Nov 4, 2020 | Signed as free agent | Jake Hager | — | New York Mets | New York Mets signed free agent 2B Jake Hager to a minor league contract and invited him to spring training. |
| Nov 4, 2020 | Signed as free agent | Mallex Smith | — | New York Mets | New York Mets signed free agent CF Mallex Smith to a minor league contract and invited him to spring training. |
| Nov 4, 2020 | Signed as free agent | Arodys Vizcaíno | — | New York Mets | New York Mets signed free agent RHP Arodys Vizcaino to a minor league contract and invited him to spring training. |
| Nov 4, 2020 | Signed as free agent | Mitchell Tolman | — | New York Mets | New York Mets signed free agent 2B Mitchell Tolman to a minor league contract and invited him to spring training. |
| Nov 4, 2020 | Signed as free agent | Jamie Ritchie | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Jamie Ritchie to a minor league contract and invited him to spring training. |
| Nov 4, 2020 | Signed as free agent | Jamie Ritchie | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Jamie Ritchie to a minor league contract and invited him to spring training. |
| Nov 4, 2020 | Signed as free agent | Mallex Smith | — | New York Mets | New York Mets signed free agent CF Mallex Smith. |
| Nov 4, 2020 | Signed as free agent | José Peraza | — | New York Mets | New York Mets signed free agent SS Jose Peraza. |
| Nov 4, 2020 | Signed as free agent | Jake Hager | — | New York Mets | New York Mets signed free agent SS Jake Hager. |
| Nov 4, 2020 | Signed as free agent | Arodys Vizcaíno | — | New York Mets | New York Mets signed free agent P Arodys Vizcaino. |
| Nov 4, 2020 | Signed as free agent | Oscar De La Cruz | — | New York Mets | New York Mets signed free agent P Oscar De La Cruz. |
| Nov 4, 2020 | Signed as free agent | Jamie Ritchie | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Jamie Ritchie. |
| Nov 3, 2020 | Released | Dovydas Neverauskas | — | Pittsburgh Pirates | Pittsburgh Pirates released RHP Dovydas Neverauskas. |
| Oct 30, 2020 | Signed as free agent | Abraham Almonte | — | Atlanta Braves | Atlanta Braves signed free agent RF Abraham Almonte. |
| Oct 30, 2020 | Released | Kevin Cron | — | Arizona Diamondbacks | Arizona Diamondbacks released 1B Kevin Cron. |
| Oct 29, 2020 | Signed as free agent | Kendall Graveman | — | Seattle Mariners | Seattle Mariners signed free agent RHP Kendall Graveman. |
| Oct 29, 2020 | Signed as free agent | Stevie Wilkerson | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Stevie Wilkerson to a minor league contract and invited him to spring training. |
| Oct 29, 2020 | Signed as free agent | Stevie Wilkerson | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Stevie Wilkerson to a minor league contract and invited him to spring training. |
| Oct 29, 2020 | Signed as free agent | Stevie Wilkerson | — | Baltimore Orioles | Baltimore Orioles signed free agent 2B Stevie Wilkerson. |
| Oct 29, 2020 | Signed as free agent | Kendall Graveman | — | Seattle Mariners | Seattle Mariners signed free agent P Kendall Graveman. |
| Oct 29, 2020 | Signed as free agent | Kendall Graveman | — | Seattle Mariners | Seattle Mariners signed free agent P Kendall Graveman. |
| Oct 29, 2020 | Signed as free agent | Kendall Graveman | — | Seattle Mariners | Seattle Mariners signed free agent P Kendall Graveman. |
| Oct 29, 2020 | Signed as free agent | Kendall Graveman | — | Seattle Mariners | Seattle Mariners signed free agent RHP Kendall Graveman. |
| Oct 21, 2020 | Released | Artie Lewicki | — | Arizona Diamondbacks | Arizona Diamondbacks released RHP Artie Lewicki. |
| Oct 15, 2020 | Signed as free agent | Edrian Robinson | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Edrian Robinson to a minor league contract. |
| Oct 15, 2020 | Signed as free agent | Eduardo Soriano | — | Minnesota Twins | Minnesota Twins signed free agent RHP Eduardo Soriano to a minor league contract. |
| Oct 15, 2020 | Signed as free agent | Joandy Duran | — | Chicago Cubs | Chicago Cubs signed free agent RHP Joandy Duran to a minor league contract. |
| Oct 15, 2020 | Signed as free agent | Jose Montilla | — | San Francisco Giants | San Francisco Giants signed free agent RHP Jose Montilla to a minor league contract. |
| Oct 15, 2020 | Signed as free agent | Yohan Crispin | — | Chicago Cubs | Chicago Cubs signed free agent RHP Yohan Crispin to a minor league contract. |
| Oct 15, 2020 | Signed as free agent | Andrws Cruz | — | Chicago Cubs | Chicago Cubs signed free agent IF Andrws Cruz to a minor league contract. |
| Oct 15, 2020 | Signed as free agent | Leonel Espinoza | — | Chicago Cubs | Chicago Cubs signed free agent SS Leonel Espinoza to a minor league contract. |
| Oct 15, 2020 | Signed as free agent | Waimer Fabian | — | Chicago Cubs | Chicago Cubs signed free agent RHP Waimer Fabian to a minor league contract. |
| Oct 15, 2020 | Signed as free agent | Angel Hernandez | — | Chicago Cubs | Chicago Cubs signed free agent LHP Angel Hernandez to a minor league contract. |
| Oct 15, 2020 | Signed as free agent | Jose Herrera | — | Chicago Cubs | Chicago Cubs signed free agent C Jose Herrera to a minor league contract. |
| Oct 15, 2020 | Signed as free agent | Jose M. Lopez | — | Chicago Cubs | Chicago Cubs signed free agent RHP Jose Lopez to a minor league contract. |
| Oct 15, 2020 | Signed as free agent | Jose Romero | — | Chicago Cubs | Chicago Cubs signed free agent RHP Jose Romero to a minor league contract. |
| Oct 15, 2020 | Signed as free agent | Marino Santy | — | Chicago Cubs | Chicago Cubs signed free agent LHP Marino Santy to a minor league contract. |
| Oct 15, 2020 | Signed as free agent | Jerry Torres | — | Chicago Cubs | Chicago Cubs signed free agent OF Jerry Torres to a minor league contract. |
| Oct 15, 2020 | Signed as free agent | Paolo Espino | — | Washington Nationals | Washington Nationals signed free agent RHP Paolo Espino to a minor league contract and invited him to spring training. |
| Oct 15, 2020 | Signed as free agent | Paolo Espino | — | Washington Nationals | Washington Nationals signed free agent P Paolo Espino. |
| Oct 14, 2020 | Signed as free agent | Andre Arthur | — | Miami Marlins | Miami Marlins signed free agent OF Andre Arthur to a minor league contract. |
| Oct 14, 2020 | Signed as free agent | Wilton Castillo | — | San Diego Padres | San Diego Padres signed free agent RHP Wilton Castillo to a minor league contract. |
| Oct 14, 2020 | Signed as free agent | Geison Urbaez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Geison Urbaez to a minor league contract. |
| Oct 14, 2020 | Signed as free agent | Johan Simon | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Johan Simon to a minor league contract. |
| Oct 14, 2020 | Signed as free agent | Kendry Rojas | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Kendry Rojas to a minor league contract. |
| Oct 14, 2020 | Signed as free agent | Dianye Florentino | — | Texas Rangers | Texas Rangers signed free agent RHP Dianye Florentino to a minor league contract. |
| Oct 13, 2020 | Signed as free agent | Kevin Garcia | — | Boston Red Sox | Boston Red Sox signed free agent OF Kevin Garcia to a minor league contract. |
| Oct 13, 2020 | Signed as free agent | Wilber Dotel | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Bladimir Dotel to a minor league contract. |
| Oct 13, 2020 | Signed as free agent | Jake Perez | — | San Diego Padres | San Diego Padres signed free agent 2B Jake Perez to a minor league contract. |
| Oct 13, 2020 | Signed as free agent | Emael Miliano | — | Kansas City Royals | Kansas City Royals signed free agent RHP Emael Miliano to a minor league contract. |
| Oct 9, 2020 | Signed as free agent | Erik Ozuna | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Erik Ozuna to a minor league contract. |
| Oct 8, 2020 | Signed as free agent | Tyler Cropley | — | Kansas City Royals | Kansas City Royals signed free agent C Tyler Cropley to a minor league contract. |
| Oct 7, 2020 | Signed as free agent | Po-Yu Chen | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Po-Yu Chen to a minor league contract. |
| Oct 6, 2020 | Signed as free agent | Claudio Falcon | — | San Francisco Giants | San Francisco Giants signed free agent C Claudio Falcon to a minor league contract. |
| Oct 6, 2020 | Signed as free agent | Alejandro Osuna | — | Texas Rangers | Texas Rangers signed free agent OF Alejandro Osuna to a minor league contract. |
| Oct 6, 2020 | Signed as free agent | Jose G. Gonzalez | — | San Francisco Giants | San Francisco Giants signed free agent RHP Jose Gonzalez to a minor league contract. |
| Oct 6, 2020 | Signed as free agent | Brayan Palencia | — | San Francisco Giants | San Francisco Giants signed free agent RHP Brayan Palencia to a minor league contract. |
| Oct 6, 2020 | Signed as free agent | Michael De La Cruz | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Michael De La Cruz to a minor league contract. |
| Oct 5, 2020 | Signed as free agent | Yonathan Ochoa | — | San Francisco Giants | San Francisco Giants signed free agent RHP Yonathan Ochoa to a minor league contract. |
| Oct 4, 2020 | Signed as free agent | Juan Gámez | — | Chicago Cubs | Chicago Cubs signed free agent RHP Juan Gamez to a minor league contract and invited him to spring training. |
| Oct 4, 2020 | Signed as free agent | Juan Gámez | — | Chicago Cubs | Chicago Cubs signed free agent RHP Juan Gamez to a minor league contract and invited him to spring training. |
| Oct 4, 2020 | Signed as free agent | Juan Gámez | — | Chicago Cubs | Chicago Cubs signed free agent P Juan Gamez. |
| Oct 2, 2020 | Signed as free agent | Kai Wynyard | — | Texas Rangers | Texas Rangers signed free agent RHP Kai Wynyard, to a minor league contract. |
| Oct 1, 2020 | Signed as free agent | Yosy Galan | — | Texas Rangers | Texas Rangers signed free agent OF Yosy Galan to a minor league contract. |
| Sep 30, 2020 | Released | Tommy Milone | — | Atlanta Braves | Atlanta Braves released LHP Tommy Milone. |
| Sep 29, 2020 | Signed as free agent | Weslyn Toussaint | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Weslyn Toussaint to a minor league contract. |
| Sep 29, 2020 | Signed as free agent | Peyton Gray | — | Kansas City Royals | Kansas City Royals signed free agent RHP Peyton Gray to a minor league contract. |
| Sep 28, 2020 | Signed as free agent | Cole Percival | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Cole Percival to a minor league contract. |
| Sep 28, 2020 | Signed as free agent | Yoelvis Burguillos | — | Miami Marlins | Miami Marlins signed free agent RHP Yoelvis Burguillos to a minor league contract. |
| Sep 28, 2020 | Released | Steve Cishek | — | Chicago White Sox | Chicago White Sox released RHP Steve Cishek. |
| Sep 28, 2020 | Released | Jeff Samardzija | — | San Francisco Giants | San Francisco Giants released RHP Jeff Samardzija. |
| Sep 28, 2020 | Signed as free agent | David Tiburcio | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP David Tiburcio to a minor league contract. |
| Sep 28, 2020 | Signed as free agent | Juan Machado | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Juan Machado to a minor league contract. |
| Sep 26, 2020 | Released | Homer Bailey | — | Minnesota Twins | Minnesota Twins released RHP Homer Bailey. |
| Sep 25, 2020 | Released | Nate Jones | — | Cincinnati Reds | Cincinnati Reds released RHP Nate Jones. |
| Sep 23, 2020 | Signed as free agent | Andy Garcia | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Andy Garcia to a minor league contract. |
| Sep 23, 2020 | Signed as free agent | Miguel Guerrero | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Miguel Guerrero to a minor league contract. |
| Sep 22, 2020 | Released | Justin Smoak | — | San Francisco Giants | San Francisco Giants released 1B Justin Smoak. |
| Sep 22, 2020 | Signed as free agent | Raynel Moron | — | Washington Nationals | Washington Nationals signed free agent RHP Raynel Moron to a minor league contract. |
| Sep 21, 2020 | Released | Wade Davis | — | Colorado Rockies | Colorado Rockies released RHP Wade Davis. |
| Sep 21, 2020 | Signed as free agent | Kenyi Perez | — | Chicago Cubs | Chicago Cubs signed free agent RHP Kenyi Perez to a minor league contract. |
| Sep 21, 2020 | Signed as free agent | Rony Baez | — | Chicago Cubs | Chicago Cubs signed free agent RHP Rony Baez to a minor league contract. |
| Sep 21, 2020 | Signed as free agent | Edward De La Cruz | — | Washington Nationals | Washington Nationals signed free agent C Edward De La Cruz to a minor league contract. |
| Sep 20, 2020 | Released | Chandler Shepherd | — | Baltimore Orioles | Baltimore Orioles released RHP Chandler Shepherd. |
| Sep 20, 2020 | Trade | Victor González | New York Mets | Baltimore Orioles | New York Mets traded SS Victor Gonzalez to Baltimore Orioles. PTBNL in Miguel Castro trade, 8/31/2020 |
| Sep 20, 2020 | Released | Yefry Ramírez | — | New York Mets | New York Mets released RHP Yefry Ramirez. |
| Sep 20, 2020 | Trade | Stephen Villines | New York Mets | Texas Rangers | New York Mets traded RHP Stephen Villines to Texas Rangers. |
| Sep 20, 2020 | Released | Mason Williams | — | Baltimore Orioles | Baltimore Orioles released OF Mason Williams. |
| Sep 20, 2020 | Trade | Conner Loeprich | Pittsburgh Pirates | Baltimore Orioles | Pittsburgh Pirates traded RHP Conner Loeprich to Baltimore Orioles for cash. International bonus pool capacity |
| Sep 20, 2020 | Trade | Domingo Robles | Pittsburgh Pirates | St. Louis Cardinals | Pittsburgh Pirates traded LHP Domingo Robles to St. Louis Cardinals for cash. International bonus pool capacity |
| Sep 20, 2020 | Trade | Joel Cesar | Pittsburgh Pirates | Philadelphia Phillies | Pittsburgh Pirates traded RHP Joel Cesar to Philadelphia Phillies. |
| Sep 20, 2020 | Released | Steven Baron | — | Cleveland Guardians | Cleveland Indians released C Steven Baron. |
| Sep 20, 2020 | Released | David Hernandez | — | Cleveland Guardians | Cleveland Indians released RHP David Hernandez. |
| Sep 19, 2020 | Trade | Julio Frias | Miami Marlins | Arizona Diamondbacks | Miami Marlins traded LHP Julio Frias to Arizona Diamondbacks. |
| Sep 19, 2020 | Released | John Hicks | — | Arizona Diamondbacks | Arizona Diamondbacks released C John Hicks. |
| Sep 18, 2020 | Trade | Brandon Ramey | Philadelphia Phillies | Milwaukee Brewers | Philadelphia Phillies traded RHP Brandon Ramey, RHP Israel Puello and RHP Juan Geraldo to Milwaukee Brewers. |
| Sep 18, 2020 | Released | Jake Faria | — | Milwaukee Brewers | Milwaukee Brewers released RHP Jake Faria. |
| Sep 18, 2020 | Trade | Griffin Conine | Toronto Blue Jays | Miami Marlins | Toronto Blue Jays traded OF Griffin Conine to Miami Marlins. |
| Sep 18, 2020 | Trade | Dustin Harris | Athletics | Texas Rangers | Oakland Athletics traded 3B Dustin Harris and CF Marcus Smith to Texas Rangers. |
| Sep 18, 2020 | Trade | Isaac De León | Miami Marlins | Baltimore Orioles | Miami Marlins traded SS Isaac De Leon to Baltimore Orioles. |
| Sep 18, 2020 | Trade | Jacob Wallace | Colorado Rockies | Boston Red Sox | Colorado Rockies traded RHP Jacob Wallace to Boston Red Sox. |
| Sep 18, 2020 | Signed as free agent | Daniel Mercedes | — | New York Mets | New York Mets signed free agent LHP Daniel Mercedes to a minor league contract. |
| Sep 18, 2020 | Released | Rob Zastryzny | — | Baltimore Orioles | Baltimore Orioles released LHP Rob Zastryzny. |
| Sep 18, 2020 | Trade | Mishael Deson | Colorado Rockies | Baltimore Orioles | Colorado Rockies traded OF Mishael Deson to Baltimore Orioles. |
| Sep 17, 2020 | Trade | Matt Brash | San Diego Padres | Seattle Mariners | San Diego Padres traded RHP Matt Brash to Seattle Mariners. |
| Sep 17, 2020 | Released | Luis García | — | Texas Rangers | Texas Rangers released RHP Luis Garcia. |
| Sep 16, 2020 | Trade | Justin Miller | Toronto Blue Jays | Cincinnati Reds | Toronto Blue Jays traded RHP Justin Miller to Cincinnati Reds for Future Considerations. |
| Sep 16, 2020 | Signed as free agent | Raudelis Martinez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Raudelis Martinez to a minor league contract. |
| Sep 16, 2020 | Released | David Carpenter | — | Cincinnati Reds | Cincinnati Reds released RHP David Carpenter. |
| Sep 16, 2020 | Signed as free agent | Narbe Cruz | — | Houston Astros | Houston Astros signed free agent SS Narbe Cruz. |
| Sep 15, 2020 | Signed as free agent | Andrew Romine | — | Texas Rangers | Texas Rangers signed free agent SS Andrew Romine to a minor league contract and invited him to spring training. |
| Sep 15, 2020 | Released | Jonathan Lucroy | — | Boston Red Sox | Boston Red Sox released C Jonathan Lucroy. |
| Sep 15, 2020 | Signed as free agent | Jonathan Lucroy | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Jonathan Lucroy to a minor league contract and invited him to spring training. |
| Sep 15, 2020 | Signed as free agent | Greg Bird | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 1B Greg Bird to a minor league contract and invited him to spring training. |
| Sep 14, 2020 | Signed as free agent | Jake Lamb | — | Athletics | Oakland Athletics signed free agent 3B Jake Lamb. |
| Sep 14, 2020 | Released | Robbie Erlin | — | Atlanta Braves | Atlanta Braves released LHP Robbie Erlin. |
| Sep 14, 2020 | Released | Stevie Wilkerson | — | Baltimore Orioles | Baltimore Orioles released CF Stevie Wilkerson. |
| Sep 13, 2020 | Signed as free agent | Pablo Sandoval | — | Atlanta Braves | Atlanta Braves signed free agent 3B Pablo Sandoval to a minor league contract and invited him to spring training. |
| Sep 12, 2020 | Trade | Michael Gigliotti | Kansas City Royals | Tampa Bay Rays | Kansas City Royals traded CF Michael Gigliotti to Tampa Bay Rays. |
| Sep 12, 2020 | Released | Ofreidy Gómez | — | Kansas City Royals | Kansas City Royals released RHP Ofreidy Gomez. |
| Sep 12, 2020 | Released | Jake Lamb | — | Arizona Diamondbacks | Arizona Diamondbacks released 1B Jake Lamb. |
| Sep 12, 2020 | Signed as free agent | Travis Radke | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Travis Radke to a minor league contract and invited him to spring training. |
| Sep 11, 2020 | Signed as free agent | Akeem Bostick | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Akeem Bostick to a minor league contract. |
| Sep 11, 2020 | Signed as free agent | Nomar Medina | — | San Francisco Giants | San Francisco Giants signed free agent LHP Nomar Medina to a minor league contract. |
| Sep 10, 2020 | Signed as free agent | Joe Wieland | — | Chicago Cubs | Chicago Cubs signed free agent RHP Joe Wieland to a minor league contract and invited him to spring training. |
| Sep 10, 2020 | Trade | Pedro Martinez | Chicago Cubs | Tampa Bay Rays | Chicago Cubs traded SS Pedro Martinez to Tampa Bay Rays. |
| Sep 10, 2020 | Released | Pablo Sandoval | — | San Francisco Giants | San Francisco Giants released 3B Pablo Sandoval. |
| Sep 10, 2020 | Released | Ryan LaMarre | — | Chicago Cubs | Chicago Cubs released OF Ryan LaMarre. |
| Sep 10, 2020 | Signed as free agent | Roque Gutierrez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Roque Gutierrez to a minor league contract. |
| Sep 10, 2020 | Signed as free agent | Jose Luis Reyes | — | San Diego Padres | San Diego Padres signed free agent RHP Jose Luis Reyes to a minor league contract. |
| Sep 9, 2020 | Released | Juan Gámez | — | Chicago Cubs | Chicago Cubs released RHP Juan Gamez. |
| Sep 9, 2020 | Signed as free agent | Kelvin Valdez | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Kelvin Valdez to a minor league contract. |
| Sep 9, 2020 | Signed as free agent | Justin Smoak | — | San Francisco Giants | San Francisco Giants signed free agent 1B Justin Smoak to a minor league contract and invited him to spring training. |
| Sep 9, 2020 | Released | Jake Petricka | — | Toronto Blue Jays | Toronto Blue Jays released RHP Jake Petricka. |
| Sep 9, 2020 | Released | Justin Shafer | — | Miami Marlins | Miami Marlins released RHP Justin Shafer. |
| Sep 8, 2020 | Released | Humberto Arteaga | — | Kansas City Royals | Kansas City Royals released 3B Humberto Arteaga. |
| Sep 8, 2020 | Released | Steven Souza Jr. | — | Chicago Cubs | Chicago Cubs released RF Steven Souza Jr.. |
| Sep 8, 2020 | Released | Travis Radke | — | San Diego Padres | San Diego Padres released LHP Travis Radke. |
| Sep 8, 2020 | Signed as free agent | Ryan Buchter | — | New York Yankees | New York Yankees signed free agent LHP Ryan Buchter to a minor league contract and invited him to spring training. |
| Sep 8, 2020 | Signed as free agent | Eduardo Zapata | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Eduardo Zapata to a minor league contract. |
| Sep 7, 2020 | Released | Abiatal Avelino | — | San Francisco Giants | San Francisco Giants released SS Abiatal Avelino. |
| Sep 7, 2020 | Released | Jose Lobatón | — | Chicago Cubs | Chicago Cubs released C Jose Lobaton. |
| Sep 7, 2020 | Released | Boog Powell | — | Cincinnati Reds | Cincinnati Reds released OF Boog Powell. |
| Sep 7, 2020 | Released | Alex Powers | — | Cincinnati Reds | Cincinnati Reds released RHP Alex Powers. |
| Sep 6, 2020 | Released | Justin Smoak | — | Milwaukee Brewers | Milwaukee Brewers released 1B Justin Smoak. |
| Sep 5, 2020 | Released | Adonis Rosa | — | New York Yankees | New York Yankees released RHP Adonis Rosa. |
| Sep 5, 2020 | Released | Chris Rusin | — | Atlanta Braves | Atlanta Braves released LHP Chris Rusin. |
| Sep 5, 2020 | Released | Jharel Cotton | — | Chicago Cubs | Chicago Cubs released RHP Jharel Cotton. |
| Sep 5, 2020 | Signed as free agent | AJ Ramos | — | Colorado Rockies | Colorado Rockies signed free agent RHP AJ Ramos to a minor league contract. |
| Sep 5, 2020 | Signed as free agent | Jandel Gustave | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Jandel Gustave to a minor league contract. |
| Sep 5, 2020 | Signed as free agent | Pedro Strop | — | Chicago Cubs | Chicago Cubs signed free agent RHP Pedro Strop to a minor league contract and invited him to spring training. |
| Sep 4, 2020 | Released | Ryan Garton | — | Minnesota Twins | Minnesota Twins released RHP Ryan Garton. |
| Sep 4, 2020 | Released | Jack Reinheimer | — | Minnesota Twins | Minnesota Twins released SS Jack Reinheimer. |
| Sep 4, 2020 | Released | Pedro Payano | — | New York Mets | New York Mets released RHP Pedro Payano. |
| Sep 4, 2020 | Signed as free agent | Jeison Pena | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Jeison Pena to a minor league contract. |
| Sep 4, 2020 | Signed as free agent | Carson Rudd | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Carson Rudd to a minor league contract. |
| Sep 4, 2020 | Released | Sam Gaviglio | — | Toronto Blue Jays | Toronto Blue Jays released RHP Sam Gaviglio. |
| Sep 3, 2020 | Released | Matt Adams | — | Atlanta Braves | Atlanta Braves released 1B Matt Adams. |
| Sep 3, 2020 | Released | Jake Elmore | — | Cleveland Guardians | Cleveland Indians released 2B Jake Elmore. |
| Sep 3, 2020 | Released | Cody Allen | — | Chicago Cubs | Chicago Cubs released RHP Cody Allen. |
| Sep 3, 2020 | Released | AJ Ramos | — | Chicago Cubs | Chicago Cubs released RHP AJ Ramos. |
| Sep 3, 2020 | Released | Drew Anderson | — | Chicago White Sox | Chicago White Sox released RHP Drew Anderson. |
| Sep 2, 2020 | Trade | Jose Salvador | Cincinnati Reds | Los Angeles Angels | Cincinnati Reds traded LHP Jose Salvador to Los Angeles Angels. |
| Sep 2, 2020 | Released | Fernando Rodney | — | Houston Astros | Houston Astros released RHP Fernando Rodney. |
| Sep 2, 2020 | Signed as free agent | Luis Avilán | — | New York Yankees | New York Yankees signed free agent LHP Luis Avilan to a minor league contract. |
| Sep 2, 2020 | Signed as free agent | Jose Andujar | — | Houston Astros | Houston Astros signed free agent RHP Jose Andujar to a minor league contract. |
| Sep 1, 2020 | Trade | Kendall Williams | Blue Jays Alternate Training Site | Los Angeles Dodgers | Blue Jays Alternate Training Site traded RHP Kendall Williams to Los Angeles Dodgers. |
| Sep 1, 2020 | Trade | Alberto Rodriguez | Toronto Blue Jays | Seattle Mariners | Toronto Blue Jays traded RF Alberto Rodriguez to Seattle Mariners. |
| Sep 1, 2020 | Signed as free agent | Luis Joseph | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Luis Joseph to a minor league contract. |
| Sep 1, 2020 | Released | Neil Ramírez | — | Los Angeles Angels | Los Angeles Angels released RHP Neil Ramirez. |
| Sep 1, 2020 | Released | Kevin Quackenbush | — | Washington Nationals | Washington Nationals released RHP Kevin Quackenbush. |
| Sep 1, 2020 | Released | Josh D. Smith | — | Miami Marlins | Miami Marlins released LHP Josh D. Smith. |
| Sep 1, 2020 | Signed as free agent | Nate Tellier | — | Boston Red Sox | Boston Red Sox signed free agent RHP Nate Tellier to a minor league contract. |
| Aug 31, 2020 | Trade | Ty France | San Diego Padres | Seattle Mariners | Seattle Mariners traded Austin Adams, C Austin Nola and RHP Dan Altavilla to San Diego Padres for RHP Andres Munoz, C Luis Torrens, Taylor Trammell and 3B Ty France. |
| Aug 31, 2020 | Trade | Jason Castro | Los Angeles Angels | San Diego Padres | Los Angeles Angels traded C Jason Castro to San Diego Padres for RHP Gerardo Reyes. |
| Aug 31, 2020 | Trade | Cal Quantrill | San Diego Padres | Cleveland Guardians | Cleveland Indians traded RHP Mike Clevinger, LF Greg Allen and Player To Be Named Later to San Diego Padres for C Austin Hedges, RHP Cal Quantrill, Josh Naylor, Gabriel Arias, Joey Cantillo and Owen Miller. |
| Aug 31, 2020 | Trade | Robbie Ray | Arizona Diamondbacks | Toronto Blue Jays | Arizona Diamondbacks traded LHP Robbie Ray and cash to Toronto Blue Jays for LHP Travis Bergen. |
| Aug 31, 2020 | Trade | Mike Minor | Texas Rangers | Athletics | Texas Rangers traded LHP Mike Minor and cash to Oakland Athletics for Player To Be Named Later, Player To Be Named Later and Future Considerations. Rangers acquired Dustin Harris and Marcus Smith to complete deal, 9/18/2020 |
| Aug 31, 2020 | Trade | David Phelps | Milwaukee Brewers | Philadelphia Phillies | Milwaukee Brewers traded RHP David Phelps to Philadelphia Phillies for Player To Be Named Later, Player To Be Named Later and Player To Be Named Later. |
| Aug 31, 2020 | Trade | Packy Naughton | Cincinnati Reds | Los Angeles Angels | Los Angeles Angels traded LF Brian Goodwin to Cincinnati Reds for Player To Be Named Later and Packy Naughton. |
| Aug 31, 2020 | Trade | Josh VanMeter | Cincinnati Reds | Arizona Diamondbacks | Arizona Diamondbacks traded RHP Archie Bradley and cash to Cincinnati Reds for LF Josh VanMeter and OF Stuart Fairchild. |
| Aug 31, 2020 | Trade | Jonathan Villar | Miami Marlins | Toronto Blue Jays | Miami Marlins traded Jonathan Villar to Toronto Blue Jays for Player To Be Named Later. Marlins acquired Griffin Conine to complete trade, 9/18/2020 |
| Aug 31, 2020 | Trade | Humberto Mejía | Miami Marlins | Arizona Diamondbacks | Arizona Diamondbacks traded CF Starling Marte to Miami Marlins for Player To Be Named Later, LHP Caleb Smith and RHP Humberto Mejia. |
| Aug 31, 2020 | Trade | Taylor Williams | Seattle Mariners | San Diego Padres | Seattle Mariners traded RHP Taylor Williams to San Diego Padres for Player To Be Named Later. |
| Aug 31, 2020 | Trade | Ross Stripling | Los Angeles Dodgers | Toronto Blue Jays | Los Angeles Dodgers traded RHP Ross Stripling and Player To Be Named Later to Toronto Blue Jays for Player To Be Named Later. |
| Aug 31, 2020 | Trade | Todd Frazier | Texas Rangers | New York Mets | Texas Rangers traded 3B Todd Frazier to New York Mets for Player To Be Named Later. |
| Aug 31, 2020 | Trade | Robinson Chirinos | Texas Rangers | New York Mets | Texas Rangers traded C Robinson Chirinos and cash to New York Mets for Player To Be Named Later. |
| Aug 31, 2020 | Trade | Miguel Castro | Baltimore Orioles | New York Mets | Baltimore Orioles traded RHP Miguel Castro to New York Mets for LHP Kevin Smith and Player To Be Named Later. Victor Gonzalez sent to Orioles to complete trade, 9/20/2020 |
| Aug 31, 2020 | Trade | Kevin Pillar | Boston Red Sox | Colorado Rockies | Boston Red Sox traded CF Kevin Pillar to Colorado Rockies for Player To Be Named Later and Future Considerations. |
| Aug 31, 2020 | Trade | Cameron Maybin | Detroit Tigers | Chicago Cubs | Detroit Tigers traded LF Cameron Maybin to Chicago Cubs for SS Zack Short. |
| Aug 31, 2020 | Trade | Josh Osich | Boston Red Sox | Chicago Cubs | Boston Red Sox traded LHP Josh Osich to Chicago Cubs for Player To Be Named Later. |
| Aug 31, 2020 | Trade | Andrew Chafin | Arizona Diamondbacks | Chicago Cubs | Arizona Diamondbacks traded LHP Andrew Chafin and cash to Chicago Cubs for Player To Be Named Later. |
| Aug 31, 2020 | Trade | Anthony Banda | Tampa Bay Rays | San Francisco Giants | Tampa Bay Rays traded LHP Anthony Banda to San Francisco Giants for cash. |
| Aug 31, 2020 | Released | Pedro Strop | — | Cincinnati Reds | Cincinnati Reds released RHP Pedro Strop. |
| Aug 31, 2020 | Released | Justin Grimm | — | Milwaukee Brewers | Milwaukee Brewers released RHP Justin Grimm. |
| Aug 31, 2020 | Signed as free agent | Nicolo Pinazzi | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Nicolo Pinazzi to a minor league contract. |
| Aug 31, 2020 | Released | Braden Shipley | — | Kansas City Royals | Kansas City Royals released RHP Braden Shipley. |
| Aug 31, 2020 | Released | Rubén Tejada | — | Toronto Blue Jays | Toronto Blue Jays released 2B Ruben Tejada. |
| Aug 30, 2020 | Trade | Hudson Potts | San Diego Padres | Boston Red Sox | Boston Red Sox traded 1B Mitch Moreland to San Diego Padres for 3B Hudson Potts and CF Jeisson Rosario. |
| Aug 30, 2020 | Released | Marco Hernández | — | Boston Red Sox | Boston Red Sox released 2B Marco Hernandez. |
| Aug 30, 2020 | Trade | Tommy Milone | Baltimore Orioles | Atlanta Braves | Baltimore Orioles traded LHP Tommy Milone to Atlanta Braves for Player To Be Named Later and Player To Be Named Later. AJ Graffanino and Greg Cullen traded to Orioles as PTBNL, 11/5/2020 |
| Aug 30, 2020 | Trade | José A. Martínez | Tampa Bay Rays | Chicago Cubs | Chicago Cubs traded Player To Be Named Later and cash to Tampa Bay Rays for 1B Jose Martinez. |
| Aug 30, 2020 | Trade | Mychal Givens | Baltimore Orioles | Colorado Rockies | Baltimore Orioles traded RHP Mychal Givens to Colorado Rockies for 1B Tyler Nevin, SS Terrin Vavra and Player To Be Named Later. |
| Aug 30, 2020 | Signed as free agent | Jerad Eickhoff | — | Texas Rangers | Texas Rangers signed free agent RHP Jerad Eickhoff to a minor league contract and invited him to spring training. |
| Aug 29, 2020 | Trade | Franklin Barreto | Athletics | Los Angeles Angels | Los Angeles Angels traded 2B Tommy La Stella to Oakland Athletics for Franklin Barreto. |
| Aug 29, 2020 | Trade | Trevor Rosenthal | Kansas City Royals | San Diego Padres | Kansas City Royals traded RHP Trevor Rosenthal to San Diego Padres for CF Edward Olivares and Player To Be Named Later. |
| Aug 29, 2020 | Signed as free agent | Brock Holt | — | Washington Nationals | Washington Nationals signed free agent 2B Brock Holt. |
| Aug 29, 2020 | Released | Seth Mejias-Brean | — | San Diego Padres | San Diego Padres released 3B Seth Mejias-Brean. |
| Aug 28, 2020 | Trade | Jarrod Dyson | Pittsburgh Pirates | Chicago White Sox | Pittsburgh Pirates traded CF Jarrod Dyson to Chicago White Sox for Future Considerations. |
| Aug 28, 2020 | Released | Luis Avilán | — | New York Yankees | New York Yankees released LHP Luis Avilan. |
| Aug 28, 2020 | Trade | Riley O'Brien | Tampa Bay Rays | Cincinnati Reds | Tampa Bay Rays traded Riley O'Brien to Cincinnati Reds for LHP Cody Reed. |
| Aug 28, 2020 | Signed as free agent | Yolmer Sánchez | — | Chicago White Sox | Chicago White Sox signed free agent 2B Yolmer Sanchez to a minor league contract and invited him to spring training. |
| Aug 28, 2020 | Released | AJ Ramos | — | Los Angeles Dodgers | Los Angeles Dodgers released RHP AJ Ramos. |
| Aug 28, 2020 | Signed as free agent | Junior Flores | — | San Francisco Giants | San Francisco Giants signed free agent RHP Junior Flores to a minor league contract. |
| Aug 28, 2020 | Signed as free agent | Joey Stock | — | Boston Red Sox | Boston Red Sox signed free agent RHP Joey Stock to a minor league contract. |
| Aug 27, 2020 | Trade | Taijuan Walker | Seattle Mariners | Toronto Blue Jays | Seattle Mariners traded RHP Taijuan Walker to Toronto Blue Jays for Player To Be Named Later. |
| Aug 27, 2020 | Trade | Brett Phillips | Kansas City Royals | Tampa Bay Rays | Kansas City Royals traded RF Brett Phillips to Tampa Bay Rays for SS Lucius Fox. |
| Aug 27, 2020 | Released | Yangervis Solarte | — | Atlanta Braves | Atlanta Braves released 3B Yangervis Solarte. |
| Aug 27, 2020 | Released | Travis Snider | — | Miami Marlins | Miami Marlins released OF Travis Snider. |
| Aug 26, 2020 | Trade | Rob Brantly | San Francisco Giants | New York Yankees | San Francisco Giants traded C Rob Brantly to New York Yankees for cash. |
| Aug 26, 2020 | Trade | Austin Davis | Philadelphia Phillies | Pittsburgh Pirates | Philadelphia Phillies traded LHP Austin Davis to Pittsburgh Pirates for Player To Be Named Later and cash. Joel Cesar sent to Phillies to complete trade, 9/20/2020 |
| Aug 26, 2020 | Released | Brock Holt | — | Milwaukee Brewers | Milwaukee Brewers released 2B Brock Holt. |
| Aug 26, 2020 | Released | R.J. Alvarez | — | Boston Red Sox | Boston Red Sox released RHP R.J. Alvarez. |
| Aug 26, 2020 | Released | Kelvin Herrera | — | Chicago Cubs | Chicago Cubs released RHP Kelvin Herrera. |
| Aug 25, 2020 | Released | Blake Swihart | — | Texas Rangers | Texas Rangers released C Blake Swihart. |
| Aug 25, 2020 | Signed as free agent | German Malave | — | San Francisco Giants | San Francisco Giants signed free agent RHP German Malave to a minor league contract. |
| Aug 25, 2020 | Signed as free agent | Jay Jackson | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Jay Jackson to a minor league contract. |
| Aug 24, 2020 | Trade | Daniel Vogelbach | Seattle Mariners | Toronto Blue Jays | Seattle Mariners traded 1B Daniel Vogelbach to Toronto Blue Jays for cash. |
| Aug 24, 2020 | Released | Bryan Mitchell | — | Chicago White Sox | Chicago White Sox released RHP Bryan Mitchell. |
| Aug 24, 2020 | Released | Hunter Pence | — | San Francisco Giants | San Francisco Giants released RF Hunter Pence. |
| Aug 24, 2020 | Released | Adalberto Mejía | — | Chicago White Sox | Chicago White Sox released LHP Adalberto Mejia. |
| Aug 24, 2020 | Signed as free agent | Walter Pennington | — | Kansas City Royals | Kansas City Royals signed free agent LHP Walter Pennington to a minor league contract. |
| Aug 23, 2020 | Trade | Daniel Robertson | Tampa Bay Rays | San Francisco Giants | Tampa Bay Rays traded 3B Daniel Robertson to San Francisco Giants for cash. |
| Aug 23, 2020 | Signed as free agent | Patrick Wisdom | — | Chicago Cubs | Chicago Cubs signed free agent 1B Patrick Wisdom to a minor league contract and invited him to spring training. |
| Aug 23, 2020 | Released | Brian Dozier | — | New York Mets | New York Mets released 2B Brian Dozier. |
| Aug 21, 2020 | Trade | David Hale | New York Yankees | Philadelphia Phillies | New York Yankees traded RHP David Hale to Philadelphia Phillies for Addison Russ. |
| Aug 21, 2020 | Released | Yolmer Sánchez | — | San Francisco Giants | San Francisco Giants released 2B Yolmer Sanchez. |
| Aug 21, 2020 | Trade | Connor Seabold | Philadelphia Phillies | Boston Red Sox | Boston Red Sox traded RHP Brandon Workman and RHP Heath Hembree to Philadelphia Phillies for RHP Nick Pivetta and RHP Connor Seabold. |
| Aug 21, 2020 | Signed as free agent | Bryan Serra | — | Chicago Cubs | Chicago Cubs signed free agent 2B Bryan Serra to a minor league contract. |
| Aug 19, 2020 | Released | James Sherfy | — | Arizona Diamondbacks | Arizona Diamondbacks released RHP James Sherfy. |
| Aug 19, 2020 | Trade | Jimmy Yacabonis | San Diego Padres | Seattle Mariners | San Diego Padres traded RHP Jimmy Yacabonis to Seattle Mariners for cash. |
| Aug 18, 2020 | Signed as free agent | Dietrich Enns | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LHP Dietrich Enns to a minor league contract and invited him to spring training. |
| Aug 18, 2020 | Trade | Edgar García | Philadelphia Phillies | Tampa Bay Rays | Philadelphia Phillies traded RHP Edgar Garcia to Tampa Bay Rays for Player To Be Named Later. |
| Aug 18, 2020 | Released | Heath Fillmyer | — | Kansas City Royals | Kansas City Royals released RHP Heath Fillmyer. |
| Aug 18, 2020 | Released | Wilkin Castillo | — | Miami Marlins | Miami Marlins released C Wilkin Castillo. |
| Aug 18, 2020 | Signed as free agent | Vin Timpanelli | — | Cincinnati Reds | Cincinnati Reds signed free agent C Vincent Timpanelli to a minor league contract. |
| Aug 17, 2020 | Signed as free agent | Jordy Mercer | — | New York Yankees | New York Yankees signed free agent SS Jordy Mercer to a minor league contract and invited him to spring training. |
| Aug 16, 2020 | Released | Peter O'Brien | — | Atlanta Braves | Atlanta Braves released OF Peter O'Brien. |
| Aug 14, 2020 | Trade | Chad Smith | Miami Marlins | Colorado Rockies | Colorado Rockies traded RHP Jesus Tinoco to Miami Marlins for RHP Chad Smith. |
| Aug 14, 2020 | Released | Patrick Wisdom | — | Seattle Mariners | Seattle Mariners released 1B Patrick Wisdom. |
| Aug 14, 2020 | Signed as free agent | Frederick Bencosme | — | Baltimore Orioles | Baltimore Orioles signed free agent IF Frederick Bencosme to a minor league contract. |
| Aug 14, 2020 | Signed as free agent | Elchero Francisca | — | Baltimore Orioles | Baltimore Orioles signed free agent P Elchero Francisca. |
| Aug 13, 2020 | Signed as free agent | Coleman Huntley III | — | Atlanta Braves | Atlanta Braves signed free agent RHP Coleman Huntley to a minor league contract. |
| Aug 12, 2020 | Trade | Yonder Alonso | Atlanta Braves | San Diego Padres | Atlanta Braves traded 1B Yonder Alonso to San Diego Padres for cash. |
| Aug 12, 2020 | Signed as free agent | Matt Burch | — | Chicago Cubs | Chicago Cubs signed free agent 2B Matt Burch to a minor league contract. |
| Aug 12, 2020 | Signed as free agent | Corey Phelan | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Corey Phelan to a minor league contract. |
| Aug 11, 2020 | Trade | Ildemaro Vargas | Arizona Diamondbacks | Minnesota Twins | Arizona Diamondbacks traded 2B Ildemaro Vargas to Minnesota Twins for cash. |
| Aug 11, 2020 | Signed as free agent | Ben Keizer | — | New York Yankees | New York Yankees signed free agent LHP Ben Keizer to a minor league contract. |
| Aug 10, 2020 | Trade | Brooks Raley | Cincinnati Reds | Houston Astros | Cincinnati Reds traded LHP Brooks Raley to Houston Astros for Player To Be Named Later. |
| Aug 10, 2020 | Signed as free agent | Derek Dietrich | — | Texas Rangers | Texas Rangers signed free agent 2B Derek Dietrich to a minor league contract and invited him to spring training. |
| Aug 10, 2020 | Released | Brian Johnson | — | Boston Red Sox | Boston Red Sox released LHP Brian Johnson. |
| Aug 10, 2020 | Released | Ty Blach | — | Baltimore Orioles | Baltimore Orioles released LHP Ty Blach. |
| Aug 10, 2020 | Signed as free agent | Seth Frankoff | — | Seattle Mariners | Seattle Mariners signed free agent RHP Seth Frankoff to a minor league contract and invited him to spring training. |
| Aug 9, 2020 | Trade | Luis Alexander Basabe | Chicago White Sox | San Francisco Giants | San Francisco Giants traded cash to Chicago White Sox for CF Luis Alexander Basabe. |
| Aug 8, 2020 | Released | Derek Dietrich | — | Chicago Cubs | Chicago Cubs released 2B Derek Dietrich. |
| Aug 8, 2020 | Released | Wei-Chieh Huang | — | Texas Rangers | Texas Rangers released RHP Wei-Chieh Huang. |
| Aug 8, 2020 | Signed as free agent | Jake Boone | — | Washington Nationals | Washington Nationals signed free agent SS Jake Boone to a minor league contract. |
| Aug 7, 2020 | Released | John Andreoli | — | Boston Red Sox | Boston Red Sox released OF John Andreoli. |
| Aug 7, 2020 | Signed as free agent | Seth Blair | — | Boston Red Sox | Boston Red Sox signed free agent RHP Seth Blair to a minor league contract and invited him to spring training. |
| Aug 7, 2020 | Trade | Mark Payton | Athletics | Cincinnati Reds | Oakland Athletics traded LF Mark Payton to Cincinnati Reds for Player To Be Named Later. |
| Aug 6, 2020 | Signed as free agent | Kelvin Herrera | — | Chicago Cubs | Chicago Cubs signed free agent RHP Kelvin Herrera to a minor league contract and invited him to spring training. |
| Aug 5, 2020 | Trade | Ariel Jurado | Texas Rangers | New York Mets | Texas Rangers traded RHP Ariel Jurado to New York Mets for Player To Be Named Later and cash. |
| Aug 5, 2020 | Signed as free agent | Pat Venditte | — | Miami Marlins | Miami Marlins signed free agent SHP Pat Venditte to a minor league contract and invited him to spring training. |
| Aug 3, 2020 | Signed as free agent | Justin Sterner | — | Miami Marlins | Miami Marlins signed free agent RHP Justin Sterner to a minor league contract. |
| Aug 3, 2020 | Signed as free agent | Wilkin Castillo | — | Miami Marlins | Miami Marlins signed free agent C Wilkin Castillo to a minor league contract. |
| Aug 3, 2020 | Signed as free agent | Clayton Richard | — | Chicago White Sox | Chicago White Sox signed free agent LHP Clayton Richard to a minor league contract and invited him to spring training. |
| Aug 3, 2020 | Signed as free agent | John Wilson | — | Minnesota Twins | Minnesota Twins signed free agent LHP John Wilson to a minor league contract. |
| Aug 2, 2020 | Trade | Jordan Humphreys | New York Mets | San Francisco Giants | San Francisco Giants traded OF Billy Hamilton to New York Mets for RHP Jordan Humphreys. |
| Aug 2, 2020 | Trade | Tyler Bashlor | New York Mets | Pittsburgh Pirates | New York Mets traded RHP Tyler Bashlor to Pittsburgh Pirates for cash. |
| Aug 2, 2020 | Released | Kelvin Herrera | — | Chicago White Sox | Chicago White Sox released RHP Kelvin Herrera. |
| Aug 2, 2020 | Signed as free agent | Logan Forsythe | — | Miami Marlins | Miami Marlins signed free agent 2B Logan Forsythe. |
| Aug 1, 2020 | Trade | Richard Bleier | Baltimore Orioles | Miami Marlins | Baltimore Orioles traded LHP Richard Bleier to Miami Marlins for Player To Be Named Later. |
| Aug 1, 2020 | Trade | James Hoyt | Cleveland Guardians | Miami Marlins | Miami Marlins traded cash to Cleveland Indians for RHP James Hoyt. |
| Jul 31, 2020 | Signed as free agent | Fernando Rodney | — | Houston Astros | Houston Astros signed free agent RHP Fernando Rodney to a minor league contract and invited him to spring training. |
| Jul 31, 2020 | Signed as free agent | Cody Allen | — | Chicago Cubs | Chicago Cubs signed free agent RHP Cody Allen to a minor league contract and invited him to spring training. |
| Jul 31, 2020 | Signed as free agent | Hunter Peck | — | Houston Astros | Houston Astros signed free agent LHP Hunter Peck to a minor league contract. |
| Jul 31, 2020 | Signed as free agent | Erik Kaiser | — | New York Mets | New York Mets signed free agent RHP Erik Kaiser to a minor league contract. |
| Jul 30, 2020 | Signed as free agent | Bruce Maxwell | — | New York Mets | New York Mets signed free agent C Bruce Maxwell to a minor league contract and invited him to spring training. |
| Jul 30, 2020 | Signed as free agent | Ashton Easley | — | Miami Marlins | Miami Marlins signed free agent OF Ashton Easley to a minor league contract. |
| Jul 30, 2020 | Signed as free agent | Paul Witt | — | Washington Nationals | Washington Nationals signed free agent SS Paul Witt to a minor league contract. |
| Jul 29, 2020 | Trade | Hector Velázquez | Baltimore Orioles | Houston Astros | Baltimore Orioles traded RHP Hector Velazquez to Houston Astros for Player To Be Named Later. |
| Jul 28, 2020 | Signed as free agent | Matt Harvey | — | Kansas City Royals | Kansas City Royals signed free agent RHP Matt Harvey to a minor league contract and invited him to spring training. |
| Jul 28, 2020 | Signed as free agent | Scott Kobos | — | Chicago Cubs | Chicago Cubs signed free agent LHP Scott Kobos to a minor league contract. |
| Jul 28, 2020 | Signed as free agent | AJ Lewis | — | Colorado Rockies | Colorado Rockies signed free agent C AJ Lewis to a minor league contract. |
| Jul 28, 2020 | Signed as free agent | Joshua Paulina | — | San Diego Padres | San Diego Padres signed free agent RHP Joshua Paulina to a minor league contract. |
| Jul 28, 2020 | Signed as free agent | Haydn King | — | San Francisco Giants | San Francisco Giants signed free agent LHP Haydn King to a minor league contract. |
| Jul 28, 2020 | Signed as free agent | Justin Tejeda | — | Texas Rangers | Texas Rangers signed free agent OF Justin Tejeda to a minor league contract. |
| Jul 28, 2020 | Signed as free agent | John Beller | — | St. Louis Cardinals | St. Louis Cardinals signed free agent LHP John Beller to a minor league contract. |
| Jul 27, 2020 | Released | Daniel Gossett | — | Athletics | Oakland Athletics released RHP Daniel Gossett. |
| Jul 27, 2020 | Signed as free agent | Josh Harrison | — | Washington Nationals | Washington Nationals signed free agent 2B Josh Harrison. |
| Jul 27, 2020 | Signed as free agent | Alberto Rosario | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Alberto Rosario to a minor league contract and invited him to spring training. |
| Jul 25, 2020 | Signed as free agent | Fernando Abad | — | New York Yankees | New York Yankees signed free agent LHP Fernando Abad to a minor league contract and invited him to spring training. |
| Jul 25, 2020 | Signed as free agent | Chris Herrmann | — | San Francisco Giants | San Francisco Giants signed free agent C Chris Herrmann to a minor league contract. |
| Jul 24, 2020 | Trade | Scott Schebler | Cincinnati Reds | Atlanta Braves | Cincinnati Reds traded RF Scott Schebler to Atlanta Braves for cash. |
| Jul 24, 2020 | Signed as free agent | Evan Reifert | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Evan Reifert to a minor league contract. |
| Jul 24, 2020 | Signed as free agent | TJ Shook | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP TJ Shook to a minor league contract. |
| Jul 24, 2020 | Signed | Carter Baumler | — | Baltimore Orioles | Baltimore Orioles signed RHP Carter Baumler. |
| Jul 24, 2020 | Signed as free agent | Travis Snider | — | Miami Marlins | Miami Marlins signed free agent OF Travis Snider to a minor league contract and invited him to spring training. |
| Jul 24, 2020 | Signed | Jake Eder | — | Miami Marlins | Miami Marlins signed LHP Jake Eder. |
| Jul 24, 2020 | Released | Cody Allen | — | Texas Rangers | Texas Rangers released RHP Cody Allen. |
| Jul 23, 2020 | Released | Andrew Romine | — | Chicago White Sox | Chicago White Sox released SS Andrew Romine. |
| Jul 23, 2020 | 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. |
| Jul 23, 2020 | Signed as free agent | Bryan Shaw | — | Seattle Mariners | Seattle Mariners signed free agent Bryan Shaw. |
| Jul 23, 2020 | Signed as free agent | Derek Dietrich | — | Chicago Cubs | Chicago Cubs signed free agent 2B Derek Dietrich to a minor league contract and invited him to spring training. |
| Jul 23, 2020 | Signed as free agent | Ryan LaMarre | — | Chicago Cubs | Chicago Cubs signed free agent OF Ryan LaMarre to a minor league contract and invited him to spring training. |
| Jul 22, 2020 | Signed | Jordan Nwogu | — | Chicago Cubs | Chicago Cubs signed OF Jordan Nwogu. |
| Jul 22, 2020 | Signed as free agent | Brian Dozier | — | New York Mets | New York Mets signed free agent 2B Brian Dozier to a minor league contract and invited him to spring training. |
| Jul 22, 2020 | Signed as free agent | Juan Lagares | — | New York Mets | New York Mets signed free agent CF Juan Lagares to a minor league contract and invited him to spring training. |
| Jul 22, 2020 | Released | Brett Cecil | — | St. Louis Cardinals | St. Louis Cardinals released LHP Brett Cecil. |
| Jul 22, 2020 | Signed | Dax Fulton | — | Miami Marlins | Miami Marlins signed LHP Daxton Fulton. |
| Jul 21, 2020 | Signed | Kyle Nicolas | — | Miami Marlins | Miami Marlins signed RHP Kyle Nicolas. |
| Jul 21, 2020 | Signed | Zach McCambley | — | Miami Marlins | Miami Marlins signed RHP Zach McCambley. |
| Jul 21, 2020 | Signed | Kyle Hurt | — | Miami Marlins | Miami Marlins signed RHP Kyle Hurt. |
| Jul 21, 2020 | Trade | Dylan Covey | Tampa Bay Rays | Boston Red Sox | Tampa Bay Rays traded RHP Dylan Covey to Boston Red Sox. |
| Jul 21, 2020 | Trade | Stephen Woods Jr. | Tampa Bay Rays | Kansas City Royals | Tampa Bay Rays traded RHP Stephen Woods Jr. to Kansas City Royals. |
| Jul 21, 2020 | Signed as free agent | Jhoulys Chacín | — | Atlanta Braves | Atlanta Braves signed free agent RHP Jhoulys Chacin. |
| Jul 21, 2020 | Signed as free agent | Ben Leeper | — | Chicago Cubs | Chicago Cubs signed free agent RHP Ben Leeper to a minor league contract. |
| Jul 21, 2020 | Signed as free agent | Sheldon Reed | — | Chicago Cubs | Chicago Cubs signed free agent RHP Sheldon Reed to a minor league contract. |
| Jul 21, 2020 | Signed | Tanner Burns | — | Cleveland Guardians | Cleveland Indians signed RHP Tanner Burns. |
| Jul 21, 2020 | Released | Héctor Santiago | — | Detroit Tigers | Detroit Tigers released LHP Hector Santiago. |
| Jul 21, 2020 | Signed as free agent | Allante Hall | — | Minnesota Twins | Minnesota Twins signed free agent C Allante Hall to a minor league contract. |
| Jul 21, 2020 | Signed as free agent | Zarion Sharpe | — | Minnesota Twins | Minnesota Twins signed free agent LHP Zarion Sharpe to a minor league contract. |
| Jul 21, 2020 | Released | Josh Harrison | — | Philadelphia Phillies | Philadelphia Phillies released 2B Josh Harrison. |
| Jul 21, 2020 | Signed as free agent | Ty Duvall | — | Seattle Mariners | Seattle Mariners signed free agent C Ty Duvall to a minor league contract. |
| Jul 21, 2020 | Signed as free agent | Justin Lavey | — | Seattle Mariners | Seattle Mariners signed free agent 2B Justin Lavey to a minor league contract. |
| Jul 21, 2020 | Signed as free agent | Matt Scheffler | — | Seattle Mariners | Seattle Mariners signed free agent C Matt Scheffler to a minor league contract. |
| Jul 21, 2020 | Signed as free agent | Brett Rodriguez | — | Seattle Mariners | Seattle Mariners signed free agent SS Brett Rodriguez to a minor league contract. |
| Jul 21, 2020 | Signed as free agent | Juan Mendez | — | Minnesota Twins | Minnesota Twins signed free agent RHP Juan Mendez to a minor league contract. |
| Jul 21, 2020 | Signed as free agent | Tomas Cleto | — | Minnesota Twins | Minnesota Twins signed free agent RHP Tomas Cleto to a minor league contract. |
| Jul 21, 2020 | Signed as free agent | Braden Zarbnisky | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Braden Zarbnisky to a minor league contract. |
| Jul 20, 2020 | Released | Ryan Cook | — | Miami Marlins | Miami Marlins released RHP Ryan Cook. |
| Jul 20, 2020 | Released | Derek Dietrich | — | Cincinnati Reds | Cincinnati Reds released 2B Derek Dietrich. |
| Jul 20, 2020 | Signed as free agent | Matt Adams | — | Atlanta Braves | Atlanta Braves signed free agent 1B Matt Adams to a minor league contract and invited him to spring training. |
| Jul 20, 2020 | Released | Anthony Swarzak | — | Philadelphia Phillies | Philadelphia Phillies released RHP Anthony Swarzak. |
| Jul 19, 2020 | Released | Jhoulys Chacín | — | Minnesota Twins | Minnesota Twins released RHP Jhoulys Chacin. |
| Jul 18, 2020 | Released | Chris Herrmann | — | Tampa Bay Rays | Tampa Bay Rays released C Chris Herrmann. |
| Jul 18, 2020 | Released | Ryan LaMarre | — | Tampa Bay Rays | Tampa Bay Rays released OF Ryan LaMarre. |
| Jul 18, 2020 | Released | Matt Adams | — | New York Mets | New York Mets released 1B Matt Adams. |
| Jul 18, 2020 | Released | Logan Forsythe | — | Philadelphia Phillies | Philadelphia Phillies released 2B Logan Forsythe. |
| Jul 18, 2020 | Released | Francisco Liriano | — | Philadelphia Phillies | Philadelphia Phillies released LHP Francisco Liriano. |
| Jul 17, 2020 | Signed as free agent | Drew Smith | — | Milwaukee Brewers | Milwaukee Brewers signed free agent IF Drew Smith to a minor league contract. |
| Jul 17, 2020 | Signed as free agent | Brandon Knarr | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Brandon Knarr to a minor league contract. |
| Jul 17, 2020 | Signed as free agent | Jason Munsch | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Jason Munsch to a minor league contract. |
| Jul 17, 2020 | Signed as free agent | Jacob Hurtubise | — | Cincinnati Reds | Cincinnati Reds signed free agent OF Jacob Hurtubise to a minor league contract. |
| Jul 17, 2020 | Signed | Blaze Jordan | — | Boston Red Sox | Boston Red Sox signed 3B Blaze Jordan. |
| Jul 17, 2020 | Signed | Shane Drohan | — | Boston Red Sox | Boston Red Sox signed LHP Shane Drohan. |
| Jul 17, 2020 | Released | Jake McGee | — | Colorado Rockies | Colorado Rockies released LHP Jake McGee. |
| Jul 17, 2020 | Signed as free agent | Zack Godley | — | Boston Red Sox | Boston Red Sox signed free agent RHP Zack Godley to a minor league contract and invited him to spring training. |
| Jul 17, 2020 | Released | Bryan Shaw | — | Colorado Rockies | Colorado Rockies released RHP Bryan Shaw. |
| Jul 16, 2020 | Signed | Kyle Harrison | — | San Francisco Giants | San Francisco Giants signed LHP Kyle Harrison. |
| Jul 16, 2020 | Released | Bud Norris | — | Philadelphia Phillies | Philadelphia Phillies released RHP Bud Norris. |
| Jul 16, 2020 | Trade | Tim Hill | Kansas City Royals | San Diego Padres | San Diego Padres traded CF Franchy Cordero and RHP Ronald Bolanos to Kansas City Royals for LHP Tim Hill. |
| Jul 16, 2020 | Signed as free agent | Jhonny Pereda | — | Boston Red Sox | Boston Red Sox signed free agent C Jhonny Pereda to a minor league contract and invited him to spring training. |
| Jul 16, 2020 | Signed as free agent | Andy Espinosa | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 3B Andy Espinosa to a minor league contract. |
| Jul 15, 2020 | Signed | Jeremy Wu-Yelland | — | Boston Red Sox | Boston Red Sox signed LHP Jeremy Wu-Yelland. |
| Jul 15, 2020 | Signed as free agent | Blake Goldsberry | — | Colorado Rockies | Colorado Rockies signed free agent RHP Blake Goldsberry to a minor league contract. |
| Jul 14, 2020 | Signed as free agent | Jose Lobatón | — | Chicago Cubs | Chicago Cubs signed free agent C Jose Lobaton to a minor league contract and invited him to spring training. |
| Jul 14, 2020 | Signed | Beck Way | — | New York Yankees | New York Yankees signed RHP Beck Way. |
| Jul 14, 2020 | Signed as free agent | Lucas Martino | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 1B Lucas Martino. |
| Jul 14, 2020 | Signed as free agent | Danny Oriente | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RF Danny Oriente to a minor league contract. |
| Jul 13, 2020 | Released | Zack Godley | — | Detroit Tigers | Detroit Tigers released RHP Zack Godley. |
| Jul 13, 2020 | Signed as free agent | Parker Brahms | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Parker Brahms to a minor league contract. |
| Jul 13, 2020 | Signed | Trevor Hauver | — | New York Yankees | New York Yankees signed 2B Trevor Hauver. |
| Jul 11, 2020 | Signed | Jackson Miller | — | Cincinnati Reds | Cincinnati Reds signed C Jackson Miller. |
| Jul 10, 2020 | Signed as free agent | Wilmer Flores | — | Detroit Tigers | Detroit Tigers signed free agent RHP Wilmer Flores to a minor league contract. |
| Jul 10, 2020 | Signed as free agent | Gabriel Sequeira | — | Detroit Tigers | Detroit Tigers signed free agent LHP Gabriel Sequeira to a minor league contract. |
| Jul 9, 2020 | Signed as free agent | Óscar Hernández | — | Kansas City Royals | Kansas City Royals signed free agent C Oscar Hernandez to a minor league contract and invited him to spring training. |
| Jul 9, 2020 | Signed as free agent | Noah Campbell | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 2B Noah Campbell to a minor league contract. |
| Jul 9, 2020 | Signed as free agent | Anthony Swarzak | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Anthony Swarzak to a minor league contract and invited him to spring training. |
| Jul 9, 2020 | Signed as free agent | Antonio Velez | — | Miami Marlins | Miami Marlins signed free agent LHP Antonio Velez to a minor league contract. |
| Jul 9, 2020 | Signed | Slade Cecconi | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Slade Cecconi. |
| Jul 8, 2020 | Signed | Nick Frasso | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Nick Frasso. |
| Jul 8, 2020 | Signed | Austin Martin | — | Toronto Blue Jays | Toronto Blue Jays signed SS Austin Martin. |
| Jul 8, 2020 | Signed | David Calabrese | — | Los Angeles Angels | Los Angeles Angels signed OF David Calabrese. |
| Jul 8, 2020 | Signed | Garrett Mitchell | — | Milwaukee Brewers | Milwaukee Brewers signed OF Garrett Mitchell. |
| Jul 8, 2020 | Signed as free agent | Angel Gonzalez | — | Chicago Cubs | Chicago Cubs signed free agent RHP Angel Gonzalez to a minor league contract. |
| Jul 7, 2020 | Signed | Nick Yorke | — | Boston Red Sox | Boston Red Sox signed 2B Nick Yorke. |
| Jul 7, 2020 | Signed as free agent | AJ Ramos | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP AJ Ramos to a minor league contract and invited him to spring training. |
| Jul 7, 2020 | Signed | Anthony Servideo | — | Baltimore Orioles | Baltimore Orioles signed SS Anthony Servideo. |
| Jul 7, 2020 | Signed | Coby Mayo | — | Baltimore Orioles | Baltimore Orioles signed 3B Coby Mayo. |
| Jul 7, 2020 | Signed | R.J. Dabovich | — | San Francisco Giants | San Francisco Giants signed RHP R.J. Dabovich. |
| Jul 7, 2020 | Signed as free agent | Shane Davis | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Shane Davis to a minor league contract. |
| Jul 7, 2020 | Signed as free agent | Nick Davila | — | Detroit Tigers | Detroit Tigers signed free agent RHP Nick Davila to a minor league contract. |
| Jul 7, 2020 | Signed as free agent | Chris Mauloni | — | Detroit Tigers | Detroit Tigers signed free agent RHP Chris Mauloni to a minor league contract. |
| Jul 6, 2020 | Signed as free agent | Grant Judkins | — | Athletics | Oakland Athletics signed free agent RHP Grant Judkins to a minor league contract. |
| Jul 6, 2020 | Signed as free agent | Jake Suddleson | — | Athletics | Oakland Athletics signed free agent OF Jake Suddleson to a minor league contract. |
| Jul 6, 2020 | Signed | Werner Blakely | — | Los Angeles Angels | Los Angeles Angels signed SS Werner Blakely. |
| Jul 6, 2020 | Signed as free agent | John Stankiewicz | — | Minnesota Twins | Minnesota Twins signed free agent RHP John Stankiewicz to a minor league contract. |
| Jul 6, 2020 | Signed as free agent | Elijah Greene | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Elijah Greene to a minor league contract. |
| Jul 5, 2020 | Signed as free agent | Jordan Mikel | — | Chicago White Sox | Chicago White Sox signed free agent RHP Jordan Mikel to a minor league contract. |
| Jul 4, 2020 | Signed | Clayton Beeter | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Clayton Beeter. |
| Jul 4, 2020 | Signed as free agent | Sam Thoresen | — | Chicago Cubs | Chicago Cubs signed free agent RHP Sam Thoresen to a minor league contract. |
| Jul 3, 2020 | Signed as free agent | Steven Baron | — | Cleveland Guardians | Cleveland Indians signed free agent C Steven Baron to a minor league contract and invited him to spring training. |
| Jul 3, 2020 | Signed as free agent | David Hernandez | — | Cleveland Guardians | Cleveland Indians signed free agent RHP David Hernandez to a minor league contract and invited him to spring training. |
| Jul 3, 2020 | Signed as free agent | Jake Elmore | — | Cleveland Guardians | Cleveland Indians signed free agent 2B Jake Elmore to a minor league contract and invited him to spring training. |
| Jul 3, 2020 | Signed | Nick Swiney | — | San Francisco Giants | San Francisco Giants signed LHP Nick Swiney. |
| Jul 3, 2020 | Signed | Petey Halpin | — | Cleveland Guardians | Cleveland Indians signed OF Petey Halpin. |
| Jul 3, 2020 | Signed | Milan Tolentino | — | Cleveland Guardians | Cleveland Indians signed SS Milan Tolentino. |
| Jul 3, 2020 | Signed as free agent | Matt Kemp | — | Colorado Rockies | Colorado Rockies signed free agent LF Matt Kemp to a minor league contract. |
| Jul 3, 2020 | Signed as free agent | Caleb Simpson | — | Boston Red Sox | Boston Red Sox signed free agent RHP Caleb Simpson to a minor league contract. |
| Jul 3, 2020 | Signed as free agent | Ismael Padua | — | Texas Rangers | Texas Rangers signed free agent C Ismael Padua to a minor league contract. |
| Jul 3, 2020 | Signed | Jake Vogel | — | Los Angeles Dodgers | Los Angeles Dodgers signed OF Jake Vogel. |
| Jul 2, 2020 | Signed | Jimmy Glowenke | — | San Francisco Giants | San Francisco Giants signed SS Jimmy Glowenke. |
| Jul 2, 2020 | Signed | Ryan Murphy | — | San Francisco Giants | San Francisco Giants signed RHP Ryan Murphy. |
| Jul 2, 2020 | Signed | Carmen Mlodzinski | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Carmen Mlodzinski. |
| Jul 2, 2020 | Signed | Jared Jones | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Jared Jones. |
| Jul 2, 2020 | Signed | Nick Garcia | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Nick Garcia. |
| Jul 2, 2020 | Signed as free agent | Joe Jimenez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Joe Jimenez to a minor league contract. |
| Jul 2, 2020 | Signed as free agent | Dominic Gonnella | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Dominic Gonnella to a minor league contract. |
| Jul 2, 2020 | Signed as free agent | Lucas Sweany | — | Minnesota Twins | Minnesota Twins signed free agent LHP Lucas Sweany to a minor league contract. |
| Jul 2, 2020 | Signed | Casey Schmitt | — | San Francisco Giants | San Francisco Giants signed 3B Casey Schmitt. |
| Jul 2, 2020 | Signed as free agent | Richard Brito | — | New York Mets | New York Mets signed free agent RHP Richard Brito to a minor league contract. |
| Jul 2, 2020 | Signed as free agent | Sammy Tavarez | — | New York Mets | New York Mets signed free agent RHP Sammy Tavarez to a minor league contract. |
| Jul 1, 2020 | Signed as free agent | Zach Cornell | — | Washington Nationals | Washington Nationals signed free agent OF Zach Cornell to a minor league contract. |
| Jul 1, 2020 | Signed as free agent | Brian Klein | — | Washington Nationals | Washington Nationals signed free agent 2B Brian Klein to a minor league contract. |
| Jul 1, 2020 | Signed as free agent | Quade Tomlin | — | Washington Nationals | Washington Nationals signed free agent SS Quade Tomlin to a minor league contract. |
| Jul 1, 2020 | Signed as free agent | Zach Brzykcy | — | Washington Nationals | Washington Nationals signed free agent RHP Zach Brzykcy to a minor league contract. |
| Jul 1, 2020 | Signed as free agent | Gio Díaz | — | Washington Nationals | Washington Nationals signed free agent SS Gio Diaz to a minor league contract. |
| Jul 1, 2020 | Signed as free agent | Ray Torres | — | Washington Nationals | Washington Nationals signed free agent C Ray Torres to a minor league contract. |
| Jul 1, 2020 | Signed as free agent | Trevin Esquerra | — | Detroit Tigers | Detroit Tigers signed free agent OF Trevin Esquerra to a minor league contract. |
| Jul 1, 2020 | Signed as free agent | Austin Langworthy | — | Detroit Tigers | Detroit Tigers signed free agent OF Austin Langworthy to a minor league contract. |
| Jul 1, 2020 | Signed as free agent | DJ Poteet | — | Detroit Tigers | Detroit Tigers signed free agent OF DJ Poteet to a minor league contract. |
| Jul 1, 2020 | Signed as free agent | Carson King | — | Detroit Tigers | Detroit Tigers signed free agent RHP Carson King to a minor league contract. |
| Jul 1, 2020 | Signed | Drew Romo | — | Colorado Rockies | Colorado Rockies signed C Drew Romo. |
| Jul 1, 2020 | Signed | Patrick Bailey | — | San Francisco Giants | San Francisco Giants signed C Patrick Bailey. |
| Jul 1, 2020 | Signed as free agent | Sean Rodríguez | — | Miami Marlins | Miami Marlins signed free agent 3B Sean Rodriguez to a minor league contract. |
| Jul 1, 2020 | Signed as free agent | Myles Gayman | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Myles Gayman to a minor league contract. |
| Jul 1, 2020 | Signed | Max Meyer | — | Miami Marlins | Miami Marlins signed RHP Max Meyer. |
| Jul 1, 2020 | Signed | Kala'i Rosario | — | Minnesota Twins | Minnesota Twins signed OF Kala'i Rosario. |
| Jul 1, 2020 | Signed | A.J. Vukovich | — | Arizona Diamondbacks | Arizona Diamondbacks signed OF A.J. Vukovich. |
| Jul 1, 2020 | Signed | Christian Roa | — | Cincinnati Reds | Cincinnati Reds signed RHP Christian Roa. |
| Jun 30, 2020 | Signed | Heston Kjerstad | — | Baltimore Orioles | Baltimore Orioles signed OF Heston Kjerstad. |
| Jun 30, 2020 | Signed | Spencer Torkelson | — | Detroit Tigers | Detroit Tigers signed 3B Spencer Torkelson. |
| Jun 30, 2020 | Trade | Jorge Mateo | Athletics | San Diego Padres | Oakland Athletics traded SS Jorge Mateo to San Diego Padres for Player To Be Named Later. |
| Jun 30, 2020 | Signed as free agent | Jared Hughes | — | New York Mets | New York Mets signed free agent RHP Jared Hughes. |
| Jun 30, 2020 | Signed as free agent | Graham Lawson | — | Chicago Cubs | Chicago Cubs signed free agent RHP Graham Lawson to a minor league contract. |
| Jun 30, 2020 | Signed as free agent | Brandon Bossard | — | Chicago White Sox | Chicago White Sox signed free agent SS Brandon Bossard to a minor league contract. |
| Jun 30, 2020 | Signed as free agent | Bailey Reid | — | Chicago Cubs | Chicago Cubs signed free agent RHP Bailey Reid to a minor league contract. |
| Jun 30, 2020 | Signed as free agent | AJ Gill | — | Chicago White Sox | Chicago White Sox signed free agent OF AJ Gill to a minor league contract. |
| Jun 30, 2020 | Signed as free agent | Ty Madrigal | — | Chicago White Sox | Chicago White Sox signed free agent LHP Ty Madrigal to a minor league contract. |
| Jun 30, 2020 | Signed | Cole Wilcox | — | San Diego Padres | San Diego Padres signed RHP Cole Wilcox. |
| Jun 30, 2020 | Signed | Liam Norris | — | Arizona Diamondbacks | Arizona Diamondbacks signed LHP Liam Norris. |
| Jun 29, 2020 | Signed as free agent | Casey Cobb | — | Boston Red Sox | Boston Red Sox signed free agent RHP Casey Cobb to a minor league contract. |
| Jun 29, 2020 | Signed as free agent | Juan Montero | — | Boston Red Sox | Boston Red Sox signed free agent C Juan Montero to a minor league contract. |
| Jun 29, 2020 | Signed as free agent | Henry Nunez | — | Boston Red Sox | Boston Red Sox signed free agent RHP Henry Nunez to a minor league contract. |
| Jun 29, 2020 | Signed | Bryce Jarvis | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Bryce Jarvis. |
| Jun 29, 2020 | Signed | Connor Phillips | — | Seattle Mariners | Seattle Mariners signed RHP Connor Phillips. |
| Jun 29, 2020 | Signed as free agent | Melky Cabrera | — | New York Mets | New York Mets signed free agent OF Melky Cabrera to a minor league contract and invited him to spring training. |
| Jun 29, 2020 | Signed as free agent | Hunter Strickland | — | New York Mets | New York Mets signed free agent RHP Hunter Strickland to a minor league contract and invited him to spring training. |
| Jun 29, 2020 | Signed as free agent | Erasmo Ramírez | — | New York Mets | New York Mets signed free agent RHP Erasmo Ramirez to a minor league contract and invited him to spring training. |
| Jun 29, 2020 | Signed as free agent | Gordon Beckham | — | New York Mets | New York Mets signed free agent 2B Gordon Beckham to a minor league contract and invited him to spring training. |
| Jun 29, 2020 | Signed as free agent | Ryan Cordell | — | New York Mets | New York Mets signed free agent RF Ryan Cordell to a minor league contract and invited him to spring training. |
| Jun 29, 2020 | Signed as free agent | Nick Vincent | — | Miami Marlins | Miami Marlins signed free agent RHP Nick Vincent to a minor league contract and invited him to spring training. |
| Jun 29, 2020 | Signed | Jack Hartman | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Jack Hartman. |
| Jun 29, 2020 | Signed | Tyler Soderstrom | — | Athletics | Oakland Athletics signed C Tyler Soderstrom. |
| Jun 29, 2020 | Signed as free agent | Garrett Acton | — | Athletics | Oakland Athletics signed free agent RHP Garrett Acton to a minor league contract. |
| Jun 29, 2020 | Signed | Stevie Emanuels | — | Athletics | Oakland Athletics signed RHP Stevie Emanuels. |
| Jun 29, 2020 | Signed | J.T. Ginn | — | New York Mets | New York Mets signed RHP J.T. Ginn. |
| Jun 29, 2020 | Signed as free agent | Cooper Uhl | — | Athletics | Oakland Athletics signed free agent C Cooper Uhl to a minor league contract. |
| Jun 29, 2020 | Signed as free agent | DJ Lee | — | Athletics | Oakland Athletics signed free agent OF D.J. Lee to a minor league contract. |
| Jun 29, 2020 | Signed | Brandon Pfaadt | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Brandon Pfaadt. |
| Jun 29, 2020 | Signed | Landon Knack | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Landon Knack. |
| Jun 29, 2020 | Signed as free agent | Matt Duffy | — | New York Yankees | New York Yankees signed free agent 3B Matt Duffy to a minor league contract. |
| Jun 28, 2020 | Signed as free agent | Matt Duffy | — | New York Yankees | New York Yankees signed free agent 3B Matt Duffy to a minor league contract and invited him to spring training. |
| Jun 28, 2020 | Signed as free agent | Max McDowell | — | New York Yankees | New York Yankees signed free agent C Max McDowell to a minor league contract and invited him to spring training. |
| Jun 28, 2020 | Signed | Reid Detmers | — | Los Angeles Angels | Los Angeles Angels signed LHP Reid Detmers. |
| Jun 27, 2020 | Signed | Logan Hofmann | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Logan Hofmann. |
| Jun 27, 2020 | Signed | Jared Kelley | — | Chicago White Sox | Chicago White Sox signed RHP Jared Kelley. |
| Jun 27, 2020 | Signed | Hudson Haskin | — | Baltimore Orioles | Baltimore Orioles signed OF Hudson Haskin. |
| Jun 27, 2020 | Signed | Jordan Westburg | — | Baltimore Orioles | Baltimore Orioles signed SS Jordan Westburg. |
| Jun 27, 2020 | Signed as free agent | Alex McGarry | — | Cincinnati Reds | Cincinnati Reds signed free agent 1B Alex McGarry to a minor league contract. |
| Jun 27, 2020 | Signed | Bryce Bonnin | — | Cincinnati Reds | Cincinnati Reds signed RHP Bryce Bonnin. |
| Jun 27, 2020 | Signed | Mac Wainwright | — | Cincinnati Reds | Cincinnati Reds signed OF Mac Wainwright. |
| Jun 27, 2020 | Signed | Joe Boyle | — | Cincinnati Reds | Cincinnati Reds signed RHP Joe Boyle. |
| Jun 27, 2020 | Signed as free agent | Gus Steiger | — | Cincinnati Reds | Cincinnati Reds signed free agent SS Gus Steiger to a minor league contract. |
| Jun 27, 2020 | Signed as free agent | Francisco Urbaez | — | Cincinnati Reds | Cincinnati Reds signed free agent SS Francisco Urbaez to a minor league contract. |
| Jun 27, 2020 | Released | Matt Duffy | — | Texas Rangers | Texas Rangers released 3B Matt Duffy. |
| Jun 27, 2020 | Signed | Zavier Warren | — | Milwaukee Brewers | Milwaukee Brewers signed SS Zavier Warren. |
| Jun 27, 2020 | Released | Ryan Cordell | — | New York Mets | New York Mets released RF Ryan Cordell. |
| Jun 27, 2020 | Released | Erasmo Ramírez | — | New York Mets | New York Mets released RHP Erasmo Ramirez. |
| Jun 26, 2020 | Signed as free agent | Luke Leisenring | — | Colorado Rockies | Colorado Rockies signed free agent C Luke Leisenring to a minor league contract. |
| Jun 26, 2020 | Signed as free agent | Tanner Propst | — | Colorado Rockies | Colorado Rockies signed free agent LHP Tanner Propst to a minor league contract. |
| Jun 26, 2020 | Signed | Austin Wells | — | New York Yankees | New York Yankees signed C Austin Wells. |
| Jun 26, 2020 | Signed | Chris McMahon | — | Colorado Rockies | Colorado Rockies signed RHP Chris McMahon. |
| Jun 26, 2020 | Signed | Kaden Polcovich | — | Seattle Mariners | Seattle Mariners signed IF Kaden Polcovich. |
| Jun 26, 2020 | Signed | Tyler Keenan | — | Seattle Mariners | Seattle Mariners signed 3B Tyler Keenan. |
| Jun 26, 2020 | Signed | Austin Hendrick | — | Cincinnati Reds | Cincinnati Reds signed OF Austin Hendrick. |
| Jun 26, 2020 | Signed | Carson Tucker | — | Cleveland Guardians | Cleveland Indians signed SS Carson Tucker. |
| Jun 26, 2020 | Signed | Logan Allen | — | Cleveland Guardians | Cleveland Indians signed LHP Logan Allen. |
| Jun 26, 2020 | Signed | Mason Hickman | — | Cleveland Guardians | Cleveland Indians signed RHP Mason Hickman. |
| Jun 26, 2020 | Signed as free agent | Bradlee Beesley | — | Chicago Cubs | Chicago Cubs signed free agent OF Bradlee Beesley to a minor league contract. |
| Jun 26, 2020 | Signed as free agent | Scott McKeon | — | Chicago Cubs | Chicago Cubs signed free agent 2B Scott McKeon to a minor league contract. |
| Jun 26, 2020 | Signed as free agent | Matt Mervis | — | Chicago Cubs | Chicago Cubs signed free agent 1B Matt Mervis to a minor league contract. |
| Jun 26, 2020 | Signed as free agent | Jacob Wetzel | — | Chicago Cubs | Chicago Cubs signed free agent OF Jacob Wetzel to a minor league contract. |
| Jun 26, 2020 | Signed | Bailey Horn | — | Chicago White Sox | Chicago White Sox signed LHP Bailey Horn. |
| Jun 26, 2020 | Signed | Hayden Cantrelle | — | Milwaukee Brewers | Milwaukee Brewers signed SS Hayden Cantrelle. |
| Jun 26, 2020 | Signed | Joey Wiemer | — | Milwaukee Brewers | Milwaukee Brewers signed OF Joey Wiemer. |
| Jun 26, 2020 | Signed | Freddy Zamora | — | Milwaukee Brewers | Milwaukee Brewers signed SS Freddy Zamora. |
| Jun 26, 2020 | Signed as free agent | Edwin Núñez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Edwin Nunez to a minor league contract. |
| Jun 26, 2020 | Signed | Tanner Murray | — | Tampa Bay Rays | Tampa Bay Rays signed SS Tanner Murray. |
| Jun 26, 2020 | Signed | Ian Bedell | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Ian Bedell. |
| Jun 25, 2020 | Signed | Isaiah Greene | — | New York Mets | New York Mets signed OF Isaiah Greene. |
| Jun 25, 2020 | Signed | Burl Carraway | — | Chicago Cubs | Chicago Cubs signed LHP Burl Carraway. |
| Jun 25, 2020 | Signed | Luke Little | — | Chicago Cubs | Chicago Cubs signed LHP Luke Little. |
| Jun 25, 2020 | Signed | Koen Moreno | — | Chicago Cubs | Chicago Cubs signed RHP Koen Moreno. |
| Jun 25, 2020 | Signed | Emerson Hancock | — | Seattle Mariners | Seattle Mariners signed RHP Emerson Hancock. |
| Jun 25, 2020 | Signed | Zach DeLoach | — | Seattle Mariners | Seattle Mariners signed OF Zach DeLoach. |
| Jun 25, 2020 | Signed | Taylor Dollard | — | Seattle Mariners | Seattle Mariners signed RHP Taylor Dollard. |
| Jun 25, 2020 | Signed | Pete Crow-Armstrong | — | New York Mets | New York Mets signed OF Pete Crow-Armstrong. |
| Jun 25, 2020 | Signed as free agent | Zac Cook | — | Toronto Blue Jays | Toronto Blue Jays signed free agent IF Zac Cook to a minor league contract. |
| Jun 25, 2020 | Signed as free agent | MacKenzie Mueller | — | Toronto Blue Jays | Toronto Blue Jays signed free agent OF MacKenzie Mueller to a minor league contract. |
| Jun 25, 2020 | Signed as free agent | Harrison Ray | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 2B Harrison Ray to a minor league contract. |
| Jun 25, 2020 | Signed | Tink Hence | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Tink Hence. |
| Jun 25, 2020 | Signed | Ian Seymour | — | Tampa Bay Rays | Tampa Bay Rays signed LHP Ian Seymour. |
| Jun 25, 2020 | Signed | Casey Martin | — | Philadelphia Phillies | Philadelphia Phillies signed SS Casey Martin. |
| Jun 24, 2020 | Signed | Tekoah Roby | — | Texas Rangers | Texas Rangers signed RHP Tekoah Roby. |
| Jun 24, 2020 | Signed | Thomas Saggese | — | Texas Rangers | Texas Rangers signed SS Thomas Saggese. |
| Jun 24, 2020 | Signed | Mick Abel | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Mick Abel. |
| Jun 24, 2020 | Signed as free agent | Jake MacKenzie | — | Boston Red Sox | Boston Red Sox signed free agent SS Jake MacKenzie to a minor league contract. |
| Jun 24, 2020 | Signed as free agent | Jose Garcia | — | Boston Red Sox | Boston Red Sox signed free agent C Jose Garcia to a minor league contract. |
| Jun 24, 2020 | Signed as free agent | Cuba Bess | — | Boston Red Sox | Boston Red Sox signed free agent 1B Cuba Bess to a minor league contract. |
| Jun 24, 2020 | Signed as free agent | Merfy Andrew | — | Boston Red Sox | Boston Red Sox signed free agent RHP Merfy Andrew to a minor league contract. |
| Jun 24, 2020 | Signed as free agent | Maceo Campbell | — | Boston Red Sox | Boston Red Sox signed free agent RHP Maceo Campbell to a minor league contract. |
| Jun 24, 2020 | Signed as free agent | Graham Hoffman | — | Boston Red Sox | Boston Red Sox signed free agent RHP Graham Hoffman to a minor league contract. |
| Jun 24, 2020 | Signed as free agent | Cole Milam | — | Boston Red Sox | Boston Red Sox signed free agent RHP Cole Milam to a minor league contract. |
| Jun 24, 2020 | Signed | Jack Blomgren | — | Colorado Rockies | Colorado Rockies signed SS Jack Blomgren. |
| Jun 24, 2020 | Signed | Justin Lange | — | San Diego Padres | San Diego Padres signed RHP Justin Lange. |
| Jun 24, 2020 | Signed as free agent | Robert Kwiatkowski | — | Boston Red Sox | Boston Red Sox signed free agent RHP Robert Kwiatkowski to a minor league contract. |
| Jun 24, 2020 | Signed | Daniel Cabrera | — | Detroit Tigers | Detroit Tigers signed OF Daniel Cabrera. |
| Jun 24, 2020 | Signed | Nick Gonzales | — | Pittsburgh Pirates | Pittsburgh Pirates signed SS Nick Gonzales. |
| Jun 24, 2020 | Signed | Zac Veen | — | Colorado Rockies | Colorado Rockies signed OF Zac Veen. |
| Jun 24, 2020 | Signed | Sam Weatherly | — | Colorado Rockies | Colorado Rockies signed LHP Sam Weatherly. |
| Jun 24, 2020 | Signed | Owen Caissie | — | San Diego Padres | San Diego Padres signed OF Owen Caissie. |
| Jun 24, 2020 | Signed | Jagger Haynes | — | San Diego Padres | San Diego Padres signed LHP Jagger Haynes. |
| Jun 24, 2020 | Signed | Masyn Winn | — | St. Louis Cardinals | St. Louis Cardinals signed SS Masyn Winn. |
| Jun 24, 2020 | Signed as free agent | Robert Emery | — | San Francisco Giants | San Francisco Giants signed free agent C Robert Emery to a minor league contract. |
| Jun 24, 2020 | Signed as free agent | Jose A. Felix | — | Texas Rangers | Texas Rangers signed free agent C Jose Felix to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | Stevie Branche | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Stevie Branche to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | Tyler Keysor | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Tyler Keysor to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | Brett Lockwood | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Brett Lockwood to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | Leo Nierenberg | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Leo Nierenberg to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | James Proctor | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP James Proctor to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | Braxton Roxby | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Braxton Roxby to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | Carson Spiers | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Carson Spiers to a minor league contract. |
| Jun 23, 2020 | Signed | Asa Lacy | — | Kansas City Royals | Kansas City Royals signed LHP Asa Lacy. |
| Jun 23, 2020 | Signed | Tyler Gentry | — | Kansas City Royals | Kansas City Royals signed OF Tyler Gentry. |
| Jun 23, 2020 | Signed | Will Klein | — | Kansas City Royals | Kansas City Royals signed RHP Will Klein. |
| Jun 23, 2020 | Signed | Nick Loftin | — | Kansas City Royals | Kansas City Royals signed SS Nick Loftin. |
| Jun 23, 2020 | Signed | Ben Hernandez | — | Kansas City Royals | Kansas City Royals signed RHP Ben Hernandez. |
| Jun 23, 2020 | Signed | Christian Chamberlain | — | Kansas City Royals | Kansas City Royals signed LHP Christian Chamberlain. |
| Jun 23, 2020 | Signed as free agent | A.J. Block | — | Kansas City Royals | Kansas City Royals signed free agent LHP A.J. Block to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | Tucker Bradley | — | Kansas City Royals | Kansas City Royals signed free agent OF Tucker Bradley to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | John McMillon | — | Kansas City Royals | Kansas City Royals signed free agent RHP John McMillon to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | Chase Wallace | — | Kansas City Royals | Kansas City Royals signed free agent RHP Chase Wallace to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | Kale Emshoff | — | Kansas City Royals | Kansas City Royals signed free agent C Kale Emshoff to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | Saul Garza | — | Kansas City Royals | Kansas City Royals signed free agent C Saul Garza to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | Matthew Schmidt | — | Kansas City Royals | Kansas City Royals signed free agent 3B Matthew Schmidt to a minor league contract. |
| Jun 23, 2020 | Signed | Nick Bitsko | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Nick Bitsko. |
| Jun 23, 2020 | Signed as free agent | Jimmy Endersby | — | Houston Astros | Houston Astros signed free agent RHP Jimmy Endersby to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | Cody Orr | — | Houston Astros | Houston Astros signed free agent OF Cody Orr to a minor league contract. |
| Jun 23, 2020 | Signed as free agent | Jonathan Sprinkle | — | Houston Astros | Houston Astros signed free agent RHP Jonathan Sprinkle to a minor league contract. |
| Jun 23, 2020 | Signed | Aaron Sabato | — | Minnesota Twins | Minnesota Twins signed 1B Aaron Sabato. |
| Jun 23, 2020 | Signed | Cade Cavalli | — | Washington Nationals | Washington Nationals signed RHP Cade Cavalli. |
| Jun 23, 2020 | Signed | Sammy Infante | — | Washington Nationals | Washington Nationals signed SS Sammy Infante. |
| Jun 23, 2020 | Signed | Cole Henry | — | Washington Nationals | Washington Nationals signed RHP Cole Henry. |
| Jun 23, 2020 | Signed | Holden Powell | — | Washington Nationals | Washington Nationals signed RHP Holden Powell. |
| Jun 23, 2020 | Signed | Jordan Walker | — | St. Louis Cardinals | St. Louis Cardinals signed 3B Jordan Walker. |
| Jun 23, 2020 | Signed as free agent | Wil Jensen | — | San Francisco Giants | San Francisco Giants signed free agent RHP Wil Jensen to a minor league contract. |
| Jun 23, 2020 | Signed | Robert Hassell III | — | San Diego Padres | San Diego Padres signed CF Robert Hassell III. |
| Jun 22, 2020 | Signed | Ed Howard | — | Chicago Cubs | Chicago Cubs signed SS Ed Howard. |
| Jun 22, 2020 | Signed | Garrett Crochet | — | Chicago White Sox | Chicago White Sox signed LHP Garrett Crochet. |
| Jun 22, 2020 | Signed | Jeff Criswell | — | Athletics | Oakland Athletics signed RHP Jeff Criswell. |
| Jun 22, 2020 | Signed | Michael Guldberg | — | Athletics | Oakland Athletics signed OF Michael Guldberg. |
| Jun 22, 2020 | Signed | Dane Acker | — | Athletics | Oakland Athletics signed RHP Dane Acker. |
| Jun 22, 2020 | Signed as free agent | William Simoneit | — | Athletics | Oakland Athletics signed free agent C William Simoneit to a minor league contract. |
| Jun 22, 2020 | Signed as free agent | Robbie Peto | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Robbie Peto to a minor league contract. |
| Jun 22, 2020 | Signed | Bobby Miller | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Bobby Miller. |
| Jun 22, 2020 | Signed as free agent | Clay Aguilar | — | New York Yankees | New York Yankees signed free agent LHP Clay Aguilar to a minor league contract. |
| Jun 22, 2020 | Signed as free agent | Landon Dieterich | — | Washington Nationals | Washington Nationals signed free agent OF Landon Dieterich to a minor league contract. |
| Jun 22, 2020 | Signed as free agent | Edward Urena | — | Washington Nationals | Washington Nationals signed free agent RHP Edward Urena to a minor league contract. |
| Jun 22, 2020 | Signed as free agent | Ethan Workinger | — | Atlanta Braves | Atlanta Braves signed free agent OF Ethan Workinger to a minor league contract. |
| Jun 21, 2020 | Signed | Carson Taylor | — | Los Angeles Dodgers | Los Angeles Dodgers signed C Carson Taylor. |
| Jun 20, 2020 | Signed as free agent | Alonzo Richardson | — | Cleveland Guardians | Cleveland Indians signed free agent SS Alonzo Richardson to a minor league contract. |
| Jun 20, 2020 | Signed as free agent | Blane Abeyta | — | New York Yankees | New York Yankees signed free agent RHP Blane Abeyta to a minor league contract. |
| Jun 20, 2020 | Signed as free agent | Dylan Harris | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Dylan Harris to a minor league contract. |
| Jun 19, 2020 | Signed | Justin Foscue | — | Texas Rangers | Texas Rangers signed 2B Justin Foscue. |
| Jun 19, 2020 | Signed | Evan Carter | — | Texas Rangers | Texas Rangers signed OF Evan Carter. |
| Jun 19, 2020 | Signed as free agent | Aidan Curry | — | Texas Rangers | Texas Rangers signed free agent RHP Aidan Curry to a minor league contract. |
| Jun 19, 2020 | Signed | Gage Workman | — | Detroit Tigers | Detroit Tigers signed 3B Gage Workman. |
| Jun 19, 2020 | Signed | Tyler Brown | — | Houston Astros | Houston Astros signed RHP Ty Brown. |
| Jun 19, 2020 | Signed | Alex Santos II | — | Houston Astros | Houston Astros signed RHP Alex Santos II. |
| Jun 19, 2020 | Signed | Shay Whitcomb | — | Houston Astros | Houston Astros signed SS Shay Whitcomb. |
| Jun 19, 2020 | Signed as free agent | J.C. Correa | — | Houston Astros | Houston Astros signed free agent SS J.C. Correa to a minor league contract. |
| Jun 19, 2020 | Signed | Zach Daniels | — | Houston Astros | Houston Astros signed OF Zach Daniels. |
| Jun 19, 2020 | Signed as free agent | Justin Dirden | — | Houston Astros | Houston Astros signed free agent OF Justin Dirden to a minor league contract. |
| Jun 19, 2020 | Signed as free agent | Zack Matthews | — | Houston Astros | Houston Astros signed free agent RHP Zack Matthews to a minor league contract. |
| Jun 19, 2020 | Signed as free agent | Cesar Gomez | — | Houston Astros | Houston Astros signed free agent OF Cesar Gomez to a minor league contract. |
| Jun 19, 2020 | Signed as free agent | Peter Zimmermann | — | Houston Astros | Houston Astros signed free agent 1B Peter Zimmermann to a minor league contract. |
| Jun 19, 2020 | Signed as free agent | Kyle Gruller | — | Houston Astros | Houston Astros signed free agent RHP Kyle Gruller to a minor league contract. |
| Jun 19, 2020 | Signed as free agent | Buddy Hayward | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Buddy Hayward to a minor league contract. |
| Jun 19, 2020 | Signed | Carson Ragsdale | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Carson Ragsdale. |
| Jun 19, 2020 | Signed as free agent | Adam Kerner | — | San Diego Padres | San Diego Padres signed free agent C Adam Kerner to a minor league contract. |
| Jun 19, 2020 | Signed as free agent | Brandon Jenkins | — | Chicago White Sox | Chicago White Sox signed free agent RHP Brandon Jenkins to a minor league contract. |
| Jun 19, 2020 | Signed as free agent | Duke Ellis | — | Chicago White Sox | Chicago White Sox signed free agent OF Duke Ellis to a minor league contract. |
| Jun 19, 2020 | Signed as free agent | Tyler Forner | — | San Francisco Giants | San Francisco Giants signed free agent OF Tyler Forner to a minor league contract. |
| Jun 19, 2020 | Signed as free agent | Brett Auerbach | — | San Francisco Giants | San Francisco Giants signed free agent C Brett Auerbach to a minor league contract. |
| Jun 19, 2020 | Signed | Jared Shuster | — | Atlanta Braves | Atlanta Braves signed LHP Jared Shuster. |
| Jun 19, 2020 | Signed | Eric Orze | — | New York Mets | New York Mets signed RHP Eric Orze. |
| Jun 19, 2020 | Signed | Bryce Elder | — | Atlanta Braves | Atlanta Braves signed RHP Bryce Elder. |
| Jun 19, 2020 | Signed | Levi Prater | — | St. Louis Cardinals | St. Louis Cardinals signed LHP Levi Prater. |
| Jun 19, 2020 | Signed | Hunter Barnhart | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Hunter Barnhart. |
| Jun 19, 2020 | Signed as free agent | Dylan MacLean | — | Texas Rangers | Texas Rangers signed free agent LHP Dylan MacLean to a minor league contract. |
| Jun 18, 2020 | Signed | Dillon Dingler | — | Detroit Tigers | Detroit Tigers signed C Dillon Dingler. |
| Jun 18, 2020 | Signed as free agent | Cade Smith | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Cade Smith to a minor league contract. |
| Jun 18, 2020 | Signed | Zach Britton | — | Toronto Blue Jays | Toronto Blue Jays signed OF Zach Britton. |
| Jun 18, 2020 | Signed | CJ Van Eyk | — | Toronto Blue Jays | Toronto Blue Jays signed RHP CJ Van Eyk. |
| Jun 18, 2020 | Signed | Trent Palmer | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Trent Palmer. |
| Jun 18, 2020 | Signed as free agent | Blake Brown | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Blake Brown to a minor league contract. |
| Jun 18, 2020 | Signed | Baron Radcliff | — | Philadelphia Phillies | Philadelphia Phillies signed OF Baron Radcliff. |
| Jun 18, 2020 | Signed | Jesse Franklin V | — | Atlanta Braves | Atlanta Braves signed OF Jesse Franklin V. |
| Jun 18, 2020 | Signed | Kade Mechals | — | Chicago White Sox | Chicago White Sox signed RHP Kade Mechals. |
| Jun 18, 2020 | Signed | Alika Williams | — | Tampa Bay Rays | Tampa Bay Rays signed SS Alika Williams. |
| Jun 18, 2020 | Signed as free agent | Carter Williams | — | San Francisco Giants | San Francisco Giants signed free agent OF Carter Williams to a minor league contract. |
| Jun 18, 2020 | Signed as free agent | Elijah Dunham | — | New York Yankees | New York Yankees signed free agent OF Elijah Dunham to a minor league contract. |
| Jun 18, 2020 | Signed as free agent | Aaron Palensky | — | New York Yankees | New York Yankees signed free agent OF Aaron Palensky to a minor league contract. |
| Jun 18, 2020 | Signed as free agent | Brandon McIlwain | — | New York Mets | New York Mets signed free agent OF Brandon McIlwain to a minor league contract. |
| Jun 18, 2020 | Signed | Marco Raya | — | Minnesota Twins | Minnesota Twins signed RHP Marco Raya. |
| Jun 18, 2020 | Signed | Alerick Soularie | — | Minnesota Twins | Minnesota Twins signed OF Alerick Soularie. |
| Jun 17, 2020 | Signed | Trei Cruz | — | Detroit Tigers | Detroit Tigers signed SS Trei Cruz. |
| Jun 17, 2020 | Signed | Colt Keith | — | Detroit Tigers | Detroit Tigers signed 3B Colt Keith. |
| Jun 17, 2020 | Signed | Case Williams | — | Colorado Rockies | Colorado Rockies signed RHP Case Williams. |
| Jun 17, 2020 | Signed as free agent | Jaime Arias | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Jaime Arias to a minor league contract. |
| Jun 17, 2020 | Signed as free agent | Joe Donovan | — | Cleveland Guardians | Cleveland Indians signed free agent C Joe Donovan to a minor league contract. |
| Jun 17, 2020 | Signed as free agent | Carter Linton | — | Atlanta Braves | Atlanta Braves signed free agent RHP Carter Linton to a minor league contract. |
| Jun 17, 2020 | Signed | Adisyn Coffey | — | Chicago White Sox | Chicago White Sox signed RHP Adisyn Coffey. |
| Jun 17, 2020 | Signed | Gavin Stone | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Gavin Stone. |
| Jun 17, 2020 | Signed as free agent | Cam Shepherd | — | Atlanta Braves | Atlanta Braves signed free agent SS Cam Shepherd to a minor league contract. |
| Jun 17, 2020 | Signed as free agent | Omar Sanchez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent LHP Omar Sanchez to a minor league contract. |
| Jun 17, 2020 | Signed | Matthew Dyer | — | New York Mets | New York Mets signed C Matthew Dyer. |
| Jun 17, 2020 | Signed as free agent | Austin Faith | — | New York Mets | New York Mets signed free agent RHP Austin Faith to a minor league contract. |
| Jun 17, 2020 | Signed | Spencer Strider | — | Atlanta Braves | Atlanta Braves signed RHP Spencer Strider. |
| Jun 16, 2020 | Signed as free agent | Chase Antle | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Chase Antle to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Jake McKenna | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Jake McKenna to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Jonathan Hughes | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Jonathan Hughes to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Noah Skirrow | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Noah Skirrow to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Billy Sullivan | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Billy Sullivan to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | J.P. Woodward | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP J.P. Woodward to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Isaiah Kearns | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Isaiah Kearns to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Jordan DiValerio | — | Boston Red Sox | Boston Red Sox signed free agent RHP Jordan DiValerio to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Thomas Girard | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Thomas Girard to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Jacinto Arredondo | — | Boston Red Sox | Boston Red Sox signed free agent RHP Jacinto Arredondo to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Brian Van Belle | — | Boston Red Sox | Boston Red Sox signed free agent RHP Brian Van Belle to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Matt Koperniak | — | St. Louis Cardinals | St. Louis Cardinals signed free agent OF Matt Koperniak to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Jacob Buchberger | — | St. Louis Cardinals | St. Louis Cardinals signed free agent 3B Jacob Buchberger to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | TT Bowens | — | Baltimore Orioles | Baltimore Orioles signed free agent 1B TT Bowens to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Mac Lardner | — | St. Louis Cardinals | St. Louis Cardinals signed free agent LHP Mac Lardner to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Gianluca Dalatri | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Gianluca Dalatri to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Josh Stephan | — | Texas Rangers | Texas Rangers signed free agent RHP Josh Stephan to a minor league contract. |
| Jun 16, 2020 | Signed | Jeff Hakanson | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Jeff Hakanson. |
| Jun 16, 2020 | Signed as free agent | Matt Chamberlain | — | St. Louis Cardinals | St. Louis Cardinals signed free agent OF Matt Chamberlain to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Nick Trogrlic-Iverson | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Nick Trogrlic-Iverson to a minor league contract. |
| Jun 16, 2020 | Signed as free agent | Fernando Amaro | — | Texas Rangers | Texas Rangers signed free agent C Fernando Amaro to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Bryson Horne | — | Atlanta Braves | Atlanta Braves signed free agent 1B Bryson Horne to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Jackson Coutts | — | Washington Nationals | Washington Nationals signed free agent 1B Jackson Coutts to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Antonio Barranca | — | Atlanta Braves | Atlanta Braves signed free agent C Antonio Barranca to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Dylan Hall | — | New York Mets | New York Mets signed free agent RHP Dylan Hall to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Joe Suozzi | — | New York Mets | New York Mets signed free agent OF Joe Suozzi to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Kody Davidson | — | New York Mets | New York Mets signed free agent RHP Kody Davidson to a minor league contract. |
| Jun 15, 2020 | Signed | Alec Burleson | — | St. Louis Cardinals | St. Louis Cardinals signed OF Alec Burleson. |
| Jun 15, 2020 | Signed as free agent | Connor Pellerin | — | New York Yankees | New York Yankees signed free agent RHP Connor Pellerin to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Danny Denz | — | San Diego Padres | San Diego Padres signed free agent LHP Danny Denz to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Michael Green | — | San Diego Padres | San Diego Padres signed free agent OF Michael Green to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Carter Loewen | — | San Diego Padres | San Diego Padres signed free agent RHP Carter Loewen to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Zack Mathis | — | San Diego Padres | San Diego Padres signed free agent 2B Zack Mathis to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Nick Raposo | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C Nick Raposo to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Nick Krauth | — | Texas Rangers | Texas Rangers signed free agent RHP Nick Krauth to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Brady Smith | — | Texas Rangers | Texas Rangers signed free agent C Brady Smith to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Colton Snyder | — | Texas Rangers | Texas Rangers signed free agent RHP Colton Snyder to a minor league contract. |
| Jun 15, 2020 | Signed as free agent | Landon Stephens | — | Atlanta Braves | Atlanta Braves signed free agent 1B Landon Stephens to a minor league contract. |
| Jun 15, 2020 | Signed | L.J. Jones | — | St. Louis Cardinals | St. Louis Cardinals signed OF LJ Jones IV. |
| Jun 15, 2020 | Signed as free agent | Drake Nightengale | — | New York Mets | New York Mets signed free agent RHP Drake Nightengale to a minor league contract. |
| Jun 14, 2020 | Signed as free agent | Carson Coleman | — | New York Yankees | New York Yankees signed free agent RHP Carson Coleman to a minor league contract. |
| Jun 14, 2020 | Signed as free agent | Jordan Fowler | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Jordan Fowler to a minor league contract. |
| Jun 14, 2020 | Signed as free agent | Trevor Holloway | — | New York Yankees | New York Yankees signed free agent RHP Trevor Holloway to a minor league contract. |
| Jun 14, 2020 | Signed as free agent | Sam Jacobsak | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Sam Jacobsak to a minor league contract. |
| Jun 14, 2020 | Signed as free agent | J.D. Mundy | — | Baltimore Orioles | Baltimore Orioles signed free agent 1B J.D. Mundy to a minor league contract. |
| Jun 14, 2020 | Signed as free agent | Chase Walter | — | San Diego Padres | San Diego Padres signed free agent RHP Chase Walter to a minor league contract. |
| Jun 14, 2020 | Signed as free agent | Ryan Watson | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Ryan Watson to a minor league contract. |
| Jun 14, 2020 | Signed as free agent | Brandon Young | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Brandon Young to a minor league contract. |
| Jun 14, 2020 | Signed as free agent | Ocean Gabonia | — | New York Yankees | New York Yankees signed free agent RHP Ocean Gabonia to a minor league contract. |
| Jun 14, 2020 | Signed as free agent | Jarod Lessar | — | New York Yankees | New York Yankees signed free agent RHP Jarod Lessar to a minor league contract. |
| Jun 14, 2020 | Signed as free agent | Ty Weber | — | San Francisco Giants | San Francisco Giants signed free agent RHP Ty Weber to a minor league contract. |
| Jun 14, 2020 | Signed as free agent | D.J. McCarty | — | Texas Rangers | Texas Rangers signed free agent RHP D.J. McCarty to a minor league contract. |
| Jun 13, 2020 | Signed | Levi Thomas | — | San Diego Padres | San Diego Padres signed RHP Levi Thomas. |
| Jun 13, 2020 | Signed | Anthony Walters | — | New York Mets | New York Mets signed SS Anthony Walters. |
| Jun 12, 2020 | Signed | Adam Seminaris | — | Los Angeles Angels | Los Angeles Angels signed LHP Adam Seminaris. |
| Jun 12, 2020 | Signed | Brady Lindsly | — | Washington Nationals | Washington Nationals signed C Brady Lindsly. |
| Jun 12, 2020 | Signed | Mitchell Parker | — | Washington Nationals | Washington Nationals signed LHP Mitchell Parker. |
| Jun 1, 2020 | Released | Josh Altmann | — | Texas Rangers | Texas Rangers released OF Josh Altmann. |
| Jun 1, 2020 | Released | Austin Bibens-Dirkx | — | Texas Rangers | Texas Rangers released RHP Austin Bibens-Dirkx. |
| Jun 1, 2020 | Released | Morgan Lofstrom | — | Cincinnati Reds | Cincinnati Reds released C Morgan Lofstrom. |
| Jun 1, 2020 | Released | Gavin LaValley | — | Cincinnati Reds | Cincinnati Reds released 1B Gavin LaValley. |
| Jun 1, 2020 | Released | Brandon Mann | — | Texas Rangers | Texas Rangers released LHP Brandon Mann. |
| Jun 1, 2020 | Released | Austin Orewiler | — | Cincinnati Reds | Cincinnati Reds released RHP Austin Orewiler. |
| Jun 1, 2020 | Released | Many Reyes | — | Cincinnati Reds | Cincinnati Reds released RHP Many Reyes. |
| Jun 1, 2020 | Released | Dylan Rheault | — | Cincinnati Reds | Cincinnati Reds released RHP Dylan Rheault. |
| Jun 1, 2020 | Released | Walker Weickel | — | Cincinnati Reds | Cincinnati Reds released RHP Walker Weickel. |
| May 31, 2020 | Released | Dante Bichette Jr. | — | Washington Nationals | Washington Nationals released 3B Dante Bichette. |
| May 31, 2020 | Released | Daniel Brown | — | Milwaukee Brewers | Milwaukee Brewers released LHP Daniel Brown. |
| May 31, 2020 | Released | Luis Gonzalez | — | Milwaukee Brewers | Milwaukee Brewers released SS Luis Gonzalez. |
| May 31, 2020 | Released | Patrick Leonard | — | Milwaukee Brewers | Milwaukee Brewers released 3B Patrick Leonard. |
| May 31, 2020 | Released | Max McDowell | — | Milwaukee Brewers | Milwaukee Brewers released C Max McDowell. |
| May 31, 2020 | Released | Joantgel Segovia | — | Milwaukee Brewers | Milwaukee Brewers released OF Joantgel Segovia. |
| May 31, 2020 | Released | JB Shuck | — | Washington Nationals | Washington Nationals released LF JB Shuck. |
| May 31, 2020 | Released | Drew Ward | — | Washington Nationals | Washington Nationals released 1B Drew Ward. |
| May 31, 2020 | Released | Robie Rojas | — | Milwaukee Brewers | Milwaukee Brewers released C Robie Rojas. |
| Mar 26, 2020 | Trade | Esteban Quiroz | San Diego Padres | Tampa Bay Rays | San Diego Padres traded 2B Esteban Quiroz to Tampa Bay Rays. |
| Mar 24, 2020 | Signed as free agent | Yairo Muñoz | — | Boston Red Sox | Boston Red Sox signed free agent 2B Yairo Munoz to a minor league contract. |
| Mar 23, 2020 | Trade | Jhonny Pereda | Chicago Cubs | Boston Red Sox | Chicago Cubs traded C Jhonny Pereda to Boston Red Sox. |
| Mar 20, 2020 | Released | Sam Tuivailala | — | Seattle Mariners | Seattle Mariners released RHP Sam Tuivailala. |
| Mar 19, 2020 | Released | Jared Hughes | — | Houston Astros | Houston Astros released RHP Jared Hughes. |
| Mar 16, 2020 | Signed as free agent | Javier Francisco | — | San Francisco Giants | San Francisco Giants signed free agent SS Francisco Javier to a minor league contract. |
| Mar 14, 2020 | Released | Hunter Strickland | — | Washington Nationals | Washington Nationals released RHP Hunter Strickland. |
| Mar 14, 2020 | Signed as free agent | Yhoswar Garcia | — | Philadelphia Phillies | Philadelphia Phillies signed free agent CF Yhoswar Garcia to a minor league contract. |
| Mar 14, 2020 | Signed as free agent | James Adduci | — | Texas Rangers | Texas Rangers signed free agent OF Jim Adduci to a minor league contract. |
| Mar 14, 2020 | Signed as free agent | Esmerling Vasquez | — | Texas Rangers | Texas Rangers signed free agent RHP Esmerling Vasquez to a minor league contract. |
| Mar 14, 2020 | Signed as free agent | Francisco Villegas | — | Texas Rangers | Texas Rangers signed free agent LHP Francisco Villegas to a minor league contract. |
| Mar 14, 2020 | Signed as free agent | Diego Rodriguez | — | Boston Red Sox | Boston Red Sox signed free agent IF Diego Rodriguez to a minor league contract. |
| Mar 13, 2020 | Signed as free agent | Travis Taijeron | — | New York Mets | New York Mets signed free agent OF Travis Taijeron to a minor league contract. |
| Mar 13, 2020 | Signed as free agent | Liomny Vasquez | — | Chicago Cubs | Chicago Cubs signed free agent 3B Liomny Vasquez to a minor league contract. |
| Mar 13, 2020 | Signed as free agent | Wally Soto | — | Chicago Cubs | Chicago Cubs signed free agent C Wally Soto to a minor league contract. |
| Mar 11, 2020 | Signed as free agent | Dillon Overton | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Dillon Overton to a minor league contract. |
| Mar 11, 2020 | Signed as free agent | Werner Leal | — | Texas Rangers | Texas Rangers signed free agent RHP Werner Leal to a minor league contract. |
| Mar 11, 2020 | Signed as free agent | Daniel Cordero | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Daniel Cordero to a minor league contract. |
| Mar 11, 2020 | Signed as free agent | Jeury Hiciano | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Jeury Hiciano to a minor league contract. |
| Mar 9, 2020 | Signed as free agent | Yoel Espinal | — | Boston Red Sox | Boston Red Sox signed free agent RHP Yoel Espinal to a minor league contract. |
| Mar 9, 2020 | Signed as free agent | John LaRossa | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP John LaRossa to a minor league contract. |
| Mar 9, 2020 | Signed as free agent | Junior Pina | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Junior Pina to a minor league contract. |
| Mar 7, 2020 | Released | Yairo Muñoz | — | St. Louis Cardinals | St. Louis Cardinals released 2B Yairo Munoz. |
| Mar 7, 2020 | Signed as free agent | Andrew DiPiazza | — | Colorado Rockies | Colorado Rockies signed free agent RHP Andrew DiPiazza to a minor league contract. |
| Mar 6, 2020 | Signed as free agent | Juan Mateo | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Juan Mateo to a minor league contract. |
| Mar 6, 2020 | Signed as free agent | Jason Lott | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Jason Lott to a minor league contract. |
| Mar 6, 2020 | Signed as free agent | Jordan McArdle | — | Philadelphia Phillies | Philadelphia Phillies signed free agent OF Jordan McArdle to a minor league contract. |
| Mar 5, 2020 | Signed as free agent | Collin McHugh | — | Boston Red Sox | Boston Red Sox signed free agent RHP Collin McHugh. |
| Mar 4, 2020 | Signed as free agent | Emerson Talavera | — | Chicago White Sox | Chicago White Sox signed free agent RHP Emerson Talavera to a minor league contract. |
| Mar 3, 2020 | Signed as free agent | Robert Torres | — | New York Mets | New York Mets signed free agent RHP Robert Torres to a minor league contract. |
| Mar 3, 2020 | Signed as free agent | Angel Alfonseca | — | New York Mets | New York Mets signed free agent LHP Angel Alfonseca to a minor league contract. |
| Mar 2, 2020 | Signed as free agent | Zach Putnam | — | Chicago White Sox | Chicago White Sox signed free agent RHP Zach Putnam to a minor league contract. |
| Mar 2, 2020 | Signed as free agent | Michael O'Neal | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Michael O'Neal to a minor league contract. |
| Mar 2, 2020 | Signed as free agent | Johnny Grullon | — | San Francisco Giants | San Francisco Giants signed free agent LHP Johnny Grullon to a minor league contract. |
| Mar 2, 2020 | Signed as free agent | Juan Morillo | — | San Francisco Giants | San Francisco Giants signed free agent RHP Juan Morillo to a minor league contract. |
| Mar 2, 2020 | Signed as free agent | Juan Vilchez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Juan Vilchez to a minor league contract. |
| Mar 1, 2020 | Signed as free agent | Dustin Peterson | — | Los Angeles Angels | Los Angeles Angels signed free agent RF Dustin Peterson to a minor league contract. |
| Feb 29, 2020 | Signed as free agent | Wes Helsabeck | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Wes Helsabeck to a minor league contract and invited him to spring training. |
| Feb 29, 2020 | Signed as free agent | Connor Overton | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Connor Overton to a minor league contract. |
| Feb 29, 2020 | Signed as free agent | Allen Webster | — | Washington Nationals | Washington Nationals signed free agent RHP Allen Webster to a minor league contract. |
| Feb 29, 2020 | Signed as free agent | Jean Walters | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 2B Jean Walters to a minor league contract. |
| Feb 29, 2020 | Signed as free agent | Dary De Jesus | — | Kansas City Royals | Kansas City Royals signed free agent LHP Dary De Jesus to a minor league contract. |
| Feb 28, 2020 | Signed as free agent | Alimber Santa | — | Houston Astros | Houston Astros signed free agent RHP Alimber Santa to a minor league contract. |
| Feb 27, 2020 | Signed as free agent | Hayder Ortiz | — | Atlanta Braves | Atlanta Braves signed free agent RHP Hayder Ortiz to a minor league contract. |
| Feb 27, 2020 | Signed as free agent | Randel Clemente | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Randel Clemente to a minor league contract. |
| Feb 27, 2020 | Signed as free agent | Frank Lopez | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Frank Lopez to a minor league contract. |
| Feb 26, 2020 | Signed as free agent | Trevor Cahill | — | San Francisco Giants | San Francisco Giants signed free agent RHP Trevor Cahill to a minor league contract and invited him to spring training. |
| Feb 26, 2020 | Signed as free agent | Kent Hasler | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Kent Hasler to a minor league contract. |
| Feb 26, 2020 | Signed as free agent | Jonathan de Marte | — | Chicago Cubs | Chicago Cubs signed free agent RHP Jonathan de Marte to a minor league contract. |
| Feb 25, 2020 | Signed as free agent | Jake Paulson | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Jake Paulson to a minor league contract. |
| Feb 25, 2020 | Signed as free agent | Justin Lewis | — | Texas Rangers | Texas Rangers signed free agent LHP Justin Lewis to a minor league contract. |
| Feb 25, 2020 | Signed as free agent | Jake Gozzo | — | Cincinnati Reds | Cincinnati Reds signed free agent 1B Jacob Gozzo to a minor league contract. |
| Feb 25, 2020 | Signed as free agent | Jarold Rosado | — | Kansas City Royals | Kansas City Royals signed free agent RHP Jarold Rosado to a minor league contract. |
| Feb 24, 2020 | Signed as free agent | Jose Adames | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Jose Adames to a minor league contract. |
| Feb 24, 2020 | Signed as free agent | Marc Rzepczynski | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Marc Rzepczynski to a minor league contract and invited him to spring training. |
| Feb 24, 2020 | Signed as free agent | Carlos Hiraldo | — | Houston Astros | Houston Astros signed free agent RHP Carlos Hiraldo to a minor league contract. |
| Feb 23, 2020 | Signed as free agent | Michael Kohn | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Michael Kohn to a minor league contract. |
| Feb 23, 2020 | Signed as free agent | Ty Boyles | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Ty Boyles to a minor league contract. |
| Feb 23, 2020 | Signed as free agent | Brian Dozier | — | San Diego Padres | San Diego Padres signed free agent 2B Brian Dozier to a minor league contract and invited him to spring training. |
| Feb 23, 2020 | Signed as free agent | Rymer Liriano | — | Seattle Mariners | Seattle Mariners signed free agent OF Rymer Liriano to a minor league contract. |
| Feb 22, 2020 | Signed as free agent | Daniel Bard | — | Colorado Rockies | Colorado Rockies signed free agent RHP Daniel Bard to a minor league contract and invited him to spring training. |
| Feb 22, 2020 | Signed as free agent | Felix Reyes | — | Philadelphia Phillies | Philadelphia Phillies signed free agent OF Felix Reyes to a minor league contract. |
| Feb 22, 2020 | Signed as free agent | Fernando Vasquez | — | San Francisco Giants | San Francisco Giants signed free agent RHP Fernando Vasquez to a minor league contract. |
| Feb 22, 2020 | Signed as free agent | Luis C Gonzalez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Luis Gonzalez to a minor league contract. |
| Feb 22, 2020 | Signed as free agent | Danny Barnes | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Danny Barnes to a minor league contract. |
| Feb 21, 2020 | Signed as free agent | Brock Holt | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 2B Brock Holt. |
| Feb 21, 2020 | Signed as free agent | Zack Weiss | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Zack Weiss to a minor league contract. |
| Feb 21, 2020 | Signed as free agent | Jose Pacheco | — | Texas Rangers | Texas Rangers signed free agent RHP Jose Pacheco to a minor league contract. |
| Feb 21, 2020 | Signed as free agent | Randel Mondesi | — | Chicago White Sox | Chicago White Sox signed free agent OF Randel Mondesi to a minor league contract. |
| Feb 21, 2020 | Signed as free agent | Sean Miller | — | Baltimore Orioles | Baltimore Orioles signed free agent SS Sean Miller to a minor league contract. |
| Feb 20, 2020 | Signed as free agent | JC Ramírez | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP JC Ramirez to a minor league contract and invited him to spring training. |
| Feb 20, 2020 | Signed as free agent | Sebastian Duenas | — | Texas Rangers | Texas Rangers signed free agent LHP Sebastian Duenas to a minor league contract. |
| Feb 20, 2020 | Signed as free agent | Yordanny Monegro | — | Boston Red Sox | Boston Red Sox signed free agent RHP Yordanny Monegro to a minor league contract. |
| Feb 19, 2020 | Signed as free agent | Jonathan Lucroy | — | Boston Red Sox | Boston Red Sox signed free agent C Jonathan Lucroy to a minor league contract and invited him to spring training. |
| Feb 19, 2020 | Signed as free agent | Dominic DeMarco | — | San Diego Padres | San Diego Padres signed free agent 3B Dominic DeMarco to a minor league contract. |
| Feb 19, 2020 | Signed as free agent | Andy Sosa | — | Seattle Mariners | Seattle Mariners signed free agent OF Andy Sosa to a minor league contract. |
| Feb 19, 2020 | Signed as free agent | Julio Dilone | — | Seattle Mariners | Seattle Mariners signed free agent RHP Julio Dilone to a minor league contract. |
| Feb 19, 2020 | Signed as free agent | Anyelo Ovando | — | Seattle Mariners | Seattle Mariners signed free agent RHP Anyelo Ovando to a minor league contract. |
| Feb 19, 2020 | Signed as free agent | Mario Gomez | — | Athletics | Oakland Athletics signed free agent C Mario Gomez to a minor league contract. |
| Feb 19, 2020 | Signed as free agent | Jose Gomez | — | Texas Rangers | Texas Rangers signed free agent C Jose Gomez to a minor league contract. |
| Feb 19, 2020 | Signed as free agent | Ryan Newell | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Ryan Newell to a minor league contract. |
| Feb 18, 2020 | Signed as free agent | Jason Kipnis | — | Chicago Cubs | Chicago Cubs signed free agent 2B Jason Kipnis to a minor league contract and invited him to spring training. |
| Feb 18, 2020 | Signed as free agent | Ulices Campos | — | Detroit Tigers | Detroit Tigers signed free agent RHP Ulices Campos to a minor league contract. |
| Feb 18, 2020 | Signed as free agent | Mitch Ellis | — | Kansas City Royals | Kansas City Royals signed free agent RHP Mitch Ellis to a minor league contract. |
| Feb 17, 2020 | Signed as free agent | Jared Hughes | — | Houston Astros | Houston Astros signed free agent RHP Jared Hughes to a minor league contract and invited him to spring training. |
| Feb 17, 2020 | Signed as free agent | Cody Anderson | — | Seattle Mariners | Seattle Mariners signed free agent RHP Cody Anderson to a minor league contract and invited him to spring training. |
| Feb 17, 2020 | Signed as free agent | Keon Barnum | — | Washington Nationals | Washington Nationals signed free agent 1B Keon Barnum to a minor league contract. |
| Feb 16, 2020 | Signed as free agent | Chad Bettis | — | New York Yankees | New York Yankees signed free agent RHP Chad Bettis to a minor league contract and invited him to spring training. |
| Feb 16, 2020 | Signed as free agent | Cory Gearrin | — | Minnesota Twins | Minnesota Twins signed free agent RHP Cory Gearrin to a minor league contract and invited him to spring training. |
| Feb 15, 2020 | Trade | Burch Smith | San Francisco Giants | Athletics | San Francisco Giants traded RHP Burch Smith to Oakland Athletics for cash. |
| Feb 15, 2020 | Trade | Tyler Gilbert | Philadelphia Phillies | Los Angeles Dodgers | Los Angeles Dodgers traded RF Kyle Garlick to Philadelphia Phillies for LHP Tyler Gilbert. |
| Feb 15, 2020 | Signed as free agent | Sean Rodríguez | — | Miami Marlins | Miami Marlins signed free agent 3B Sean Rodriguez to a minor league contract and invited him to spring training. |
| Feb 15, 2020 | Signed as free agent | Terrance Gore | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent CF Terrance Gore to a minor league contract and invited him to spring training. |
| Feb 15, 2020 | Signed as free agent | Brooks Pounders | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Brooks Pounders to a minor league contract and invited him to spring training. |
| Feb 15, 2020 | Signed as free agent | Wilmer Dilonex | — | Miami Marlins | Miami Marlins signed free agent RHP Wilmer Dilonex to a minor league contract. |
| Feb 15, 2020 | Signed as free agent | Greiber Lopez | — | San Diego Padres | San Diego Padres signed free agent RHP Greiber Lopez to a minor league contract. |
| Feb 15, 2020 | Signed as free agent | Hector Rodriguez | — | Detroit Tigers | Detroit Tigers signed free agent RHP Hector Rodriguez to a minor league contract. |
| Feb 15, 2020 | Signed as free agent | Gabriel Reyes | — | Detroit Tigers | Detroit Tigers signed free agent LHP Gabriel Reyes to a minor league contract. |
| Feb 15, 2020 | Signed as free agent | Nomar Fana | — | Detroit Tigers | Detroit Tigers signed free agent OF Nomar Fana to a minor league contract. |
| Feb 15, 2020 | Signed as free agent | Stiven Almanzar | — | Miami Marlins | Miami Marlins signed free agent RHP Stiven Almanzar to a minor league contract. |
| Feb 14, 2020 | Signed as free agent | Brad Boxberger | — | Miami Marlins | Miami Marlins signed free agent RHP Brad Boxberger to a minor league contract and invited him to spring training. |
| Feb 14, 2020 | Signed as free agent | Domingo Santana | — | Cleveland Guardians | Cleveland Indians signed free agent LF Domingo Santana. |
| Feb 14, 2020 | Signed as free agent | Kevin Pillar | — | Boston Red Sox | Boston Red Sox signed free agent CF Kevin Pillar. |
| Feb 14, 2020 | Signed as free agent | Tommy Milone | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Tommy Milone to a minor league contract and invited him to spring training. |
| Feb 14, 2020 | Signed as free agent | Yonder Alonso | — | Atlanta Braves | Atlanta Braves signed free agent 1B Yonder Alonso to a minor league contract and invited him to spring training. |
| Feb 14, 2020 | Signed as free agent | Chris Volstad | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Chris Volstad to a minor league contract. |
| Feb 14, 2020 | Signed as free agent | Alexis Cruz | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Alexis Cruz to a minor league contract. |
| Feb 14, 2020 | Signed as free agent | Eris Rodríguez | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Eris Rodriguez to a minor league contract. |
| Feb 14, 2020 | Signed as free agent | Brayan Hernández | — | Baltimore Orioles | Baltimore Orioles signed free agent C Brayan Hernandez to a minor league contract. |
| Feb 14, 2020 | Signed as free agent | Andrew Moore | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Andrew Moore to a minor league contract. |
| Feb 13, 2020 | Signed as free agent | Jarrod Dyson | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent Jarrod Dyson. |
| Feb 13, 2020 | Signed as free agent | Lane Adams | — | Minnesota Twins | Minnesota Twins signed free agent CF Lane Adams to a minor league contract. |
| Feb 13, 2020 | Signed as free agent | Seth Frankoff | — | San Diego Padres | San Diego Padres signed free agent RHP Seth Frankoff to a minor league contract and invited him to spring training. |
| Feb 13, 2020 | Signed as free agent | Daniel Camarena | — | San Diego Padres | San Diego Padres signed free agent LHP Daniel Camarena to a minor league contract. |
| Feb 13, 2020 | Signed as free agent | Daniel Palencia | — | Athletics | Oakland Athletics signed free agent RHP Daniel Palencia to a minor league contract. |
| Feb 13, 2020 | Signed as free agent | Fernando Vargas | — | Minnesota Twins | Minnesota Twins signed free agent OF Fernando Vargas to a minor league contract. |
| Feb 13, 2020 | Signed as free agent | Carlos Vicioso | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Carlos Vicioso to a minor league contract. |
| Feb 13, 2020 | Signed as free agent | Francis Martínez | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Francis Martinez to a minor league contract. |
| Feb 13, 2020 | Signed as free agent | Gerald Mejia | — | New York Mets | New York Mets signed free agent CF Gerald Mejia to a minor league contract. |
| Feb 13, 2020 | Signed as free agent | Arxy Hernandez | — | Chicago White Sox | Chicago White Sox signed free agent 3B Arxy Hernandez to a minor league contract. |
| Feb 13, 2020 | Signed as free agent | Ian Clarkin | — | San Diego Padres | San Diego Padres signed free agent LHP Ian Clarkin to a minor league contract. |
| Feb 12, 2020 | Signed as free agent | Cameron Maybin | — | Detroit Tigers | Detroit Tigers signed free agent LF Cameron Maybin. |
| Feb 12, 2020 | Signed as free agent | Tony Zych | — | New York Yankees | New York Yankees signed free agent RHP Tony Zych to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Dakota Bacus | — | Washington Nationals | Washington Nationals signed free agent RHP Dakota Bacus to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Brad Miller | — | St. Louis Cardinals | St. Louis Cardinals signed free agent 2B Brad Miller. |
| Feb 12, 2020 | Signed as free agent | Wilmer Flores | — | San Francisco Giants | San Francisco Giants signed free agent 2B Wilmer Flores. |
| Feb 12, 2020 | Signed as free agent | Bryan Bonnell | — | Washington Nationals | Washington Nationals signed free agent RHP Bryan Bonnell to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Kevin Quackenbush | — | Washington Nationals | Washington Nationals signed free agent RHP Kevin Quackenbush to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Derek Self | — | Washington Nationals | Washington Nationals signed free agent RHP Derek Self to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Javy Guerra | — | Washington Nationals | Washington Nationals signed free agent RHP Javy Guerra to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | David Hernandez | — | Washington Nationals | Washington Nationals signed free agent RHP David Hernandez to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Fernando Abad | — | Washington Nationals | Washington Nationals signed free agent LHP Fernando Abad to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Sam Freeman | — | Washington Nationals | Washington Nationals signed free agent LHP Sam Freeman to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Welington Castillo | — | Washington Nationals | Washington Nationals signed free agent C Welington Castillo to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Brandon Snyder | — | Washington Nationals | Washington Nationals signed free agent 3B Brandon Snyder to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Emilio Bonifácio | — | Washington Nationals | Washington Nationals signed free agent OF Emilio Bonifacio to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Drew Ward | — | Washington Nationals | Washington Nationals signed free agent 1B Drew Ward to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Jacob Wilson | — | Washington Nationals | Washington Nationals signed free agent 3B Jacob Wilson to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | JB Shuck | — | Washington Nationals | Washington Nationals signed free agent LF JB Shuck to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Mac Williamson | — | Washington Nationals | Washington Nationals signed free agent LF Mac Williamson to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Tommy Hunter | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Tommy Hunter. |
| Feb 12, 2020 | Signed as free agent | Taijuan Walker | — | Seattle Mariners | Seattle Mariners signed free agent RHP Taijuan Walker. |
| Feb 12, 2020 | Signed as free agent | Josh Tomlin | — | Atlanta Braves | Atlanta Braves signed free agent RHP Josh Tomlin to a minor league contract and invited him to spring training. |
| Feb 12, 2020 | Signed as free agent | Matt Jones | — | Toronto Blue Jays | Toronto Blue Jays signed free agent C Matt Jones to a minor league contract. |
| Feb 12, 2020 | Signed as free agent | Aaron Blair | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Aaron Blair to a minor league contract. |
| Feb 12, 2020 | Signed as free agent | Alberto Mineo | — | Chicago Cubs | Chicago Cubs signed free agent C Alberto Mineo to a minor league contract. |
| Feb 12, 2020 | Signed as free agent | Jack Meggs | — | Milwaukee Brewers | Milwaukee Brewers signed free agent OF Jack Meggs to a minor league contract. |
| Feb 12, 2020 | Signed as free agent | Wilmer Flores | — | San Francisco Giants | San Francisco Giants signed free agent SS Wilmer Flores. |
| Feb 12, 2020 | Signed as free agent | Wilmer Flores | — | San Francisco Giants | San Francisco Giants signed free agent SS Wilmer Flores. |
| Feb 12, 2020 | Signed as free agent | Wilmer Flores | — | San Francisco Giants | San Francisco Giants signed free agent SS Wilmer Flores. |
| Feb 11, 2020 | 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. |
| Feb 11, 2020 | Signed as free agent | César Puello | — | Boston Red Sox | Boston Red Sox signed free agent OF Cesar Puello to a minor league contract and invited him to spring training. |
| Feb 11, 2020 | 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 11, 2020 | Signed as free agent | Taylor Jungmann | — | Texas Rangers | Texas Rangers signed free agent RHP Taylor Jungmann to a minor league contract. |
| Feb 11, 2020 | Signed as free agent | Carlos González | — | Seattle Mariners | Seattle Mariners signed free agent RF Carlos Gonzalez to a minor league contract and invited him to spring training. |
| Feb 11, 2020 | Signed as free agent | Collin Cowgill | — | Seattle Mariners | Seattle Mariners signed free agent LF Collin Cowgill to a minor league contract and invited him to spring training. |
| Feb 11, 2020 | Signed as free agent | Manny Banuelos | — | Seattle Mariners | Seattle Mariners signed free agent LHP Manny Banuelos to a minor league contract and invited him to spring training. |
| Feb 11, 2020 | Signed as free agent | Wei-Yin Chen | — | Seattle Mariners | Seattle Mariners signed free agent LHP Wei-Yin Chen to a minor league contract and invited him to spring training. |
| Feb 11, 2020 | Signed as free agent | Aaron Loup | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LHP Aaron Loup to a minor league contract. |
| Feb 11, 2020 | Signed as free agent | Alex Katz | — | Kansas City Royals | Kansas City Royals signed free agent LHP Alex Katz to a minor league contract. |
| Feb 10, 2020 | Trade | Alex Verdugo | Los Angeles Dodgers | Boston Red Sox | Los Angeles Dodgers traded CF Alex Verdugo, C Connor Wong and SS Jeter Downs to Boston Red Sox for RF Mookie Betts, LHP David Price and cash. |
| Feb 10, 2020 | Trade | Luke Raley | Minnesota Twins | Los Angeles Dodgers | Los Angeles Dodgers traded RHP Kenta Maeda, C Jair Camargo and cash to Minnesota Twins for RHP Brusdar Graterol, RF Luke Raley and Future Considerations. |
| Feb 10, 2020 | Signed as free agent | Juan Lagares | — | San Diego Padres | San Diego Padres signed free agent CF Juan Lagares to a minor league contract and invited him to spring training. |
| Feb 10, 2020 | Signed as free agent | Gordon Beckham | — | San Diego Padres | San Diego Padres signed free agent 2B Gordon Beckham to a minor league contract and invited him to spring training. |
| Feb 10, 2020 | Signed as free agent | Jordan Procyshen | — | Chicago Cubs | Chicago Cubs signed free agent C Jordan Procyshen to a minor league contract. |
| Feb 10, 2020 | Signed as free agent | Dondrei Hubbard | — | San Diego Padres | San Diego Padres signed free agent IF Dondrei Hubbard to a minor league contract. |
| Feb 10, 2020 | Signed as free agent | Joseph Fernando | — | San Diego Padres | San Diego Padres signed free agent SS Joseph Fernando to a minor league contract. |
| Feb 9, 2020 | Signed as free agent | Nick Vincent | — | San Francisco Giants | San Francisco Giants signed free agent RHP Nick Vincent to a minor league contract and invited him to spring training. |
| Feb 9, 2020 | Signed as free agent | Billy Hamilton | — | San Francisco Giants | San Francisco Giants signed free agent CF Billy Hamilton. |
| Feb 9, 2020 | Signed as free agent | Andry Garcia | — | Texas Rangers | Texas Rangers signed free agent RHP Andry Garcia to a minor league contract. |
| Feb 8, 2020 | Signed as free agent | Rafael Dolis | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Rafael Dolis. |
| Feb 8, 2020 | Trade | Emilio Pagán | Tampa Bay Rays | San Diego Padres | Tampa Bay Rays traded RHP Emilio Pagan to San Diego Padres for C Logan Driscoll and CF Manuel Margot. |
| Feb 8, 2020 | Signed as free agent | Daniel Duarte | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Daniel Duarte to a minor league contract. |
| Feb 8, 2020 | Signed as free agent | Lukas Young | — | Minnesota Twins | Minnesota Twins signed free agent RHP Lukas Young to a minor league contract. |
| Feb 8, 2020 | Signed as free agent | Jordan Patterson | — | Chicago Cubs | Chicago Cubs signed free agent RF Jordan Patterson to a minor league contract. |
| Feb 8, 2020 | Signed as free agent | Rafael Dolis | — | Toronto Blue Jays | Toronto Blue Jays signed free agent P Rafael Dolis. |
| Feb 8, 2020 | Signed as free agent | Rafael Dolis | — | Toronto Blue Jays | Toronto Blue Jays signed free agent P Rafael Dolis. |
| Feb 7, 2020 | Signed as free agent | Cameron Rupp | — | Cleveland Guardians | Cleveland Indians signed free agent C Cameron Rupp to a minor league contract and invited him to spring training. |
| Feb 7, 2020 | Signed as free agent | Brian Moran | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Brian Moran to a minor league contract and invited him to spring training. |
| Feb 7, 2020 | Signed as free agent | Cody Allen | — | Texas Rangers | Texas Rangers signed free agent RHP Cody Allen to a minor league contract and invited him to spring training. |
| Feb 7, 2020 | Signed as free agent | Brandon Mann | — | Texas Rangers | Texas Rangers signed free agent LHP Brandon Mann to a minor league contract. |
| Feb 7, 2020 | Signed as free agent | Hunter Pence | — | San Francisco Giants | San Francisco Giants signed free agent RF Hunter Pence. |
| Feb 7, 2020 | Signed as free agent | Erick Barria | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Erick Barria to a minor league contract. |
| Feb 7, 2020 | Signed as free agent | Mark Leiter Jr. | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Mark Leiter Jr. to a minor league contract. |
| Feb 7, 2020 | Signed as free agent | Alberto Baldonado | — | Washington Nationals | Washington Nationals signed free agent LHP Alberto Baldonado to a minor league contract. |
| Feb 7, 2020 | Signed as free agent | Yarison Ruiz | — | New York Yankees | New York Yankees signed free agent RHP Yarison Ruiz to a minor league contract. |
| Feb 7, 2020 | Signed as free agent | Osmany Fleitas | — | New York Yankees | New York Yankees signed free agent SS Osmany Fleitas to a minor league contract. |
| Feb 7, 2020 | Signed as free agent | Kyle Regnault | — | San Diego Padres | San Diego Padres signed free agent LHP Kyle Regnault to a minor league contract. |
| Feb 6, 2020 | Signed as free agent | Francisco Arcia | — | Los Angeles Angels | Los Angeles Angels signed free agent C Francisco Arcia to a minor league contract. |
| Feb 6, 2020 | Signed as free agent | Michael Hernandez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Michael Hernandez to a minor league contract. |
| Feb 6, 2020 | Signed as free agent | Jairo Garcia | — | Miami Marlins | Miami Marlins signed free agent RHP Jairo Garcia to a minor league contract. |
| Feb 5, 2020 | Signed as free agent | Solomon Maguire | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Solomon Maguire to a minor league contract. |
| Feb 5, 2020 | Signed as free agent | Logan Forsythe | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 2B Logan Forsythe to a minor league contract and invited him to spring training. |
| Feb 5, 2020 | Signed as free agent | Pedro Strop | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Pedro Strop. |
| Feb 5, 2020 | Signed as free agent | Blake Parker | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Blake Parker to a minor league contract and invited him to spring training. |
| Feb 5, 2020 | Signed as free agent | Anthony Swarzak | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Anthony Swarzak to a minor league contract and invited him to spring training. |
| Feb 5, 2020 | Signed as free agent | Ubaldo Jiménez | — | Colorado Rockies | Colorado Rockies signed free agent RHP Ubaldo Jimenez to a minor league contract and invited him to spring training. |
| Feb 5, 2020 | Signed as free agent | Donnie Hart | — | Athletics | Oakland Athletics signed free agent LHP Donnie Hart to a minor league contract and invited him to spring training. |
| Feb 5, 2020 | Signed as free agent | Kevin Marrero | — | Minnesota Twins | Minnesota Twins signed free agent OF Kevin Marrero to a minor league contract. |
| Feb 5, 2020 | Signed as free agent | Emanuel Trujillo | — | San Francisco Giants | San Francisco Giants signed free agent C Emanuel Trujillo to a minor league contract. |
| Feb 5, 2020 | Signed as free agent | Preston Guilmet | — | Miami Marlins | Miami Marlins signed free agent RHP Preston Guilmet to a minor league contract. |
| Feb 5, 2020 | Signed as free agent | Chris Smith | — | Detroit Tigers | Detroit Tigers signed free agent RHP Chris Smith to a minor league contract. |
| Feb 4, 2020 | Signed as free agent | Greg Bird | — | Texas Rangers | Texas Rangers signed free agent 1B Greg Bird to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Shelby Miller | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Shelby Miller to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Luis Avilán | — | New York Yankees | New York Yankees signed free agent LHP Luis Avilan to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Kellin Deglan | — | New York Yankees | New York Yankees signed free agent C Kellin Deglan to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | 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. |
| Feb 3, 2020 | Signed as free agent | Rosell Herrera | — | New York Yankees | New York Yankees signed free agent OF Rosell Herrera to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Chris Iannetta | — | New York Yankees | New York Yankees signed free agent C Chris Iannetta to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Erik Kratz | — | New York Yankees | New York Yankees signed free agent C Erik Kratz to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Tyler Lyons | — | New York Yankees | New York Yankees signed free agent LHP Tyler Lyons to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Thomas Milone | — | New York Yankees | New York Yankees signed free agent CF Thomas Milone to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Dan Otero | — | New York Yankees | New York Yankees signed free agent RHP Dan Otero to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Wynston Sawyer | — | New York Yankees | New York Yankees signed free agent C Wynston Sawyer to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Josh Thole | — | New York Yankees | New York Yankees signed free agent C Josh Thole to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Nick Tropeano | — | New York Yankees | New York Yankees signed free agent RHP Nick Tropeano to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Dylan Covey | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Dylan Covey to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | John Curtiss | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP John Curtiss to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Johnny Davis | — | Tampa Bay Rays | Tampa Bay Rays signed free agent OF Johnny Davis to a minor league contract. |
| Feb 3, 2020 | Signed as free agent | Jhoulys Chacín | — | Minnesota Twins | Minnesota Twins signed free agent RHP Jhoulys Chacin to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Matt Joyce | — | Miami Marlins | Miami Marlins signed free agent LF Matt Joyce. |
| Feb 3, 2020 | Signed as free agent | Brandon Kintzler | — | Miami Marlins | Miami Marlins signed free agent RHP Brandon Kintzler. |
| Feb 3, 2020 | Signed as free agent | John Hicks | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C John Hicks to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Edwin Jackson | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Edwin Jackson to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Jon Jay | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent CF Jon Jay to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Trayce Thompson | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RF Trayce Thompson to a minor league contract and invited him to spring training. |
| Feb 3, 2020 | Signed as free agent | Stiwar Adames | — | Boston Red Sox | Boston Red Sox signed free agent LHP Stiwar Adames to a minor league contract. |
| Feb 3, 2020 | Signed as free agent | Kelvin Contreras | — | New York Mets | New York Mets signed free agent LHP Kelvin Contreras to a minor league contract. |
| Feb 3, 2020 | Signed as free agent | Christopher Vasquez | — | New York Mets | New York Mets signed free agent RHP Christopher Vasquez to a minor league contract. |
| Feb 3, 2020 | Signed as free agent | Stetson Allie | — | Boston Red Sox | Boston Red Sox signed free agent RHP Stetson Allie to a minor league contract. |
| Feb 3, 2020 | Signed as free agent | Sebastián Elizalde | — | New York Mets | New York Mets signed free agent OF Sebastian Elizalde to a minor league contract. |
| Feb 3, 2020 | Signed as free agent | Kevin Gadea | — | New York Yankees | New York Yankees signed free agent RHP Kevin Gadea to a minor league contract. |
| Feb 2, 2020 | Signed as free agent | Greg Holland | — | Kansas City Royals | Kansas City Royals signed free agent RHP Greg Holland to a minor league contract and invited him to spring training. |
| Feb 1, 2020 | Signed as free agent | Jeremy Jeffress | — | Chicago Cubs | Chicago Cubs signed free agent RHP Jeremy Jeffress. |
| Feb 1, 2020 | Signed as free agent | Wade LeBlanc | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Wade LeBlanc to a minor league contract and invited him to spring training. |
| Feb 1, 2020 | Signed as free agent | Colton Turner | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Colton Turner to a minor league contract. |
| Feb 1, 2020 | Signed as free agent | Grant Black | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Grant Black to a minor league contract. |
| Jan 31, 2020 | Signed as free agent | Matt Adams | — | New York Mets | New York Mets signed free agent 1B Matt Adams to a minor league contract and invited him to spring training. |
| Jan 31, 2020 | Signed as free agent | Robbie Erlin | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Robbie Erlin to a minor league contract and invited him to spring training. |
| Jan 31, 2020 | Signed as free agent | Derek Holland | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Derek Holland to a minor league contract and invited him to spring training. |
| Jan 31, 2020 | Signed as free agent | Andrew Susac | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Andrew Susac to a minor league contract and invited him to spring training. |
| Jan 31, 2020 | Signed as free agent | Charlie Tilson | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RF Charlie Tilson to a minor league contract and invited him to spring training. |
| Jan 31, 2020 | Signed as free agent | Darin Ruf | — | San Francisco Giants | San Francisco Giants signed free agent 1B Darin Ruf to a minor league contract and invited him to spring training. |
| Jan 31, 2020 | Signed as free agent | Pablo Sandoval | — | San Francisco Giants | San Francisco Giants signed free agent 3B Pablo Sandoval to a minor league contract and invited him to spring training. |
| Jan 31, 2020 | Signed as free agent | Yolmer Sánchez | — | San Francisco Giants | San Francisco Giants signed free agent 2B Yolmer Sanchez to a minor league contract and invited him to spring training. |
| Jan 31, 2020 | Signed as free agent | JT Riddle | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent SS JT Riddle. |
| Jan 31, 2020 | Signed as free agent | Andrés Blanco | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 3B Andres Blanco to a minor league contract and invited him to spring training. |
| Jan 31, 2020 | Signed as free agent | Mike Morin | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Mike Morin to a minor league contract and invited him to spring training. |
| Jan 31, 2020 | Signed as free agent | Kennys Vargas | — | Detroit Tigers | Detroit Tigers signed free agent 1B Kennys Vargas to a minor league contract. |
| Jan 31, 2020 | Signed as free agent | Eiroon Flores | — | Texas Rangers | Texas Rangers signed free agent RHP Eiroon Flores to a minor league contract. |
| Jan 31, 2020 | Signed as free agent | Mike Ahmed | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 3B Mike Ahmed to a minor league contract. |
| Jan 31, 2020 | Signed as free agent | Zac Reininger | — | Athletics | Oakland Athletics signed free agent RHP Zac Reininger to a minor league contract. |
| Jan 30, 2020 | Signed as free agent | Yoshihisa Hirano | — | Seattle Mariners | Seattle Mariners signed free agent RHP Yoshihisa Hirano. |
| Jan 30, 2020 | Signed as free agent | Matt Duffy | — | Texas Rangers | Texas Rangers signed free agent 3B Matt Duffy to a minor league contract and invited him to spring training. |
| Jan 30, 2020 | Signed as free agent | Derek Law | — | Texas Rangers | Texas Rangers signed free agent RHP Derek Law to a minor league contract and invited him to spring training. |
| Jan 30, 2020 | Signed as free agent | Jordy Mercer | — | Detroit Tigers | Detroit Tigers signed free agent SS Jordy Mercer to a minor league contract and invited him to spring training. |
| Jan 30, 2020 | Signed as free agent | David Phelps | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP David Phelps. |
| Jan 30, 2020 | Signed as free agent | Jason Adam | — | Chicago Cubs | Chicago Cubs signed free agent RHP Jason Adam to a minor league contract and invited him to spring training. |
| Jan 30, 2020 | Signed as free agent | Smeily Bernardo | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Smeily Bernardo to a minor league contract. |
| Jan 30, 2020 | Signed as free agent | Angel Croisier | — | Tampa Bay Rays | Tampa Bay Rays signed free agent SS Angel Croisier to a minor league contract. |
| Jan 30, 2020 | Signed as free agent | Angel Ulloa | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Angel Ulloa to a minor league contract. |
| Jan 30, 2020 | Signed as free agent | Johnny Hellweg | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Johnny Hellweg to a minor league contract. |
| Jan 30, 2020 | Signed as free agent | Dalton Pompey | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Dalton Pompey to a minor league contract. |
| Jan 29, 2020 | Trade | Ryne Harper | Minnesota Twins | Washington Nationals | Minnesota Twins traded RHP Ryne Harper to Washington Nationals for RHP Hunter McMahon. |
| Jan 29, 2020 | Signed as free agent | Shohei Tomioka | — | Athletics | Oakland Athletics signed free agent RHP Shohei Tomioka to a minor league contract. |
| Jan 29, 2020 | Signed as free agent | Erasmo Tortolero | — | San Francisco Giants | San Francisco Giants signed free agent RHP Erasmo Tortolero to a minor league contract. |
| Jan 29, 2020 | Signed as free agent | Dietrich Enns | — | Seattle Mariners | Seattle Mariners signed free agent LHP Dietrich Enns to a minor league contract. |
| Jan 29, 2020 | Signed as free agent | Ryan McKay | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Ryan McKay to a minor league contract. |
| Jan 28, 2020 | Signed as free agent | Ryan Zimmerman | — | Washington Nationals | Washington Nationals signed free agent 1B Ryan Zimmerman. |
| Jan 28, 2020 | Signed as free agent | Mitch Moreland | — | Boston Red Sox | Boston Red Sox signed free agent 1B Mitch Moreland. |
| Jan 28, 2020 | Signed as free agent | Brady Rodgers | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Brady Rodgers to a minor league contract and invited him to spring training. |
| Jan 28, 2020 | Signed as free agent | Taylor Davis | — | Baltimore Orioles | Baltimore Orioles signed free agent C Taylor Davis to a minor league contract and invited him to spring training. |
| Jan 28, 2020 | Signed as free agent | Bryan Holaday | — | Baltimore Orioles | Baltimore Orioles signed free agent C Bryan Holaday to a minor league contract and invited him to spring training. |
| Jan 28, 2020 | Signed as free agent | Austin Adams | — | Minnesota Twins | Minnesota Twins signed free agent RHP Austin Adams to a minor league contract. |
| Jan 28, 2020 | Signed as free agent | Alec Asher | — | Minnesota Twins | Minnesota Twins signed free agent RHP Alec Asher to a minor league contract. |
| Jan 28, 2020 | Signed as free agent | Parker Bridwell | — | Minnesota Twins | Minnesota Twins signed free agent RHP Parker Bridwell to a minor league contract. |
| Jan 28, 2020 | Signed as free agent | Calten Daal | — | Minnesota Twins | Minnesota Twins signed free agent SS Calten Daal to a minor league contract. |
| Jan 28, 2020 | Signed as free agent | Joey Krehbiel | — | Minnesota Twins | Minnesota Twins signed free agent RHP Joey Krehbiel to a minor league contract. |
| Jan 28, 2020 | Signed as free agent | Casey Lawrence | — | Minnesota Twins | Minnesota Twins signed free agent RHP Casey Lawrence to a minor league contract. |
| Jan 28, 2020 | Signed as free agent | Juan Minaya | — | Minnesota Twins | Minnesota Twins signed free agent RHP Juan Minaya to a minor league contract. |
| Jan 28, 2020 | Signed as free agent | Chris Rowley | — | Minnesota Twins | Minnesota Twins signed free agent RHP Chris Rowley to a minor league contract. |
| Jan 28, 2020 | Signed as free agent | Steven Souza Jr. | — | Chicago Cubs | Chicago Cubs signed free agent RF Steven Souza Jr.. |
| Jan 28, 2020 | Signed as free agent | Emiliano Teodo | — | Texas Rangers | Texas Rangers signed free agent RHP Emiliano Teodo to a minor league contract. |
| Jan 28, 2020 | Signed as free agent | Michael Ynoa | — | Athletics | Oakland Athletics signed free agent RHP Michael Ynoa to a minor league contract. |
| Jan 28, 2020 | Signed as free agent | Gunner Leger | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Gunner Leger to a minor league contract. |
| Jan 27, 2020 | Trade | Brennan Malone | Arizona Diamondbacks | Pittsburgh Pirates | Arizona Diamondbacks traded RHP Brennan Malone and SS Liover Peguero to Pittsburgh Pirates for cash and CF Starling Marte. |
| Jan 27, 2020 | Signed as free agent | Nick Castellanos | — | Cincinnati Reds | Cincinnati Reds signed free agent RF Nick Castellanos. |
| Jan 27, 2020 | Signed as free agent | Rob Whalen | — | New York Mets | New York Mets signed free agent RHP Rob Whalen to a minor league contract. |
| Jan 27, 2020 | Signed as free agent | Corban Joseph | — | Chicago Cubs | Chicago Cubs signed free agent 2B Corban Joseph to a minor league contract and invited him to spring training. |
| Jan 27, 2020 | Signed as free agent | Luis Gonzalez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent SS Luis Gonzalez to a minor league contract. |
| Jan 27, 2020 | Signed as free agent | Max Bain | — | Chicago Cubs | Chicago Cubs signed free agent RHP Max Bain to a minor league contract. |
| Jan 27, 2020 | Signed as free agent | Nick Castellanos | — | Cincinnati Reds | Cincinnati Reds signed free agent 3B Nick Castellanos. |
| Jan 27, 2020 | Signed as free agent | Nick Castellanos | — | Cincinnati Reds | Cincinnati Reds signed free agent 3B Nick Castellanos. |
| Jan 26, 2020 | Signed as free agent | Yojhan Quevedo | — | Cleveland Guardians | Cleveland Indians signed free agent C Yojhan Quevedo to a minor league contract. |
| Jan 25, 2020 | Signed as free agent | Eduardo Núñez | — | New York Mets | New York Mets signed free agent 2B Eduardo Nunez to a minor league contract and invited him to spring training. |
| Jan 25, 2020 | Signed as free agent | Tyler Olson | — | Chicago Cubs | Chicago Cubs signed free agent LHP Tyler Olson to a minor league contract and invited him to spring training. |
| Jan 25, 2020 | Signed as free agent | Andri Leon | — | Detroit Tigers | Detroit Tigers signed free agent OF Andri Leon to a minor league contract. |
| Jan 25, 2020 | Signed as free agent | Gavin Cecchini | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 2B Gavin Cecchini to a minor league contract. |
| Jan 24, 2020 | Signed as free agent | Alen Hanson | — | Seattle Mariners | Seattle Mariners signed free agent 2B Alen Hanson to a minor league contract. |
| Jan 24, 2020 | Signed as free agent | Alen Hanson | — | Seattle Mariners | Seattle Mariners signed free agent 2B Alen Hanson to a minor league contract and invited him to spring training. |
| Jan 24, 2020 | Signed as free agent | Erasmo Ramírez | — | New York Mets | New York Mets signed free agent RHP Erasmo Ramirez to a minor league contract and invited him to spring training. |
| Jan 24, 2020 | Signed as free agent | Raimund Uzcategui | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Raimund Uzcategui to a minor league contract. |
| Jan 24, 2020 | Signed as free agent | Javier Mora | — | Chicago White Sox | Chicago White Sox signed free agent IF Javier Mora to a minor league contract. |
| Jan 24, 2020 | Signed as free agent | Anderson Feliz | — | Minnesota Twins | Minnesota Twins signed free agent 3B Anderson Feliz to a minor league contract. |
| Jan 23, 2020 | Signed as free agent | Dominic Leone | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Dominic Leone to a minor league contract and invited him to spring training. |
| Jan 23, 2020 | Signed as free agent | Jose Lima | — | New York Mets | New York Mets signed free agent LHP Jose Lima to a minor league contract. |
| Jan 23, 2020 | Signed as free agent | Levi Michael | — | Minnesota Twins | Minnesota Twins signed free agent SS Levi Michael to a minor league contract and invited him to spring training. |
| Jan 23, 2020 | Signed as free agent | Joey Meneses | — | Boston Red Sox | Boston Red Sox signed free agent 1B Joey Meneses to a minor league contract. |
| Jan 23, 2020 | Signed as free agent | Dario Beltre | — | Chicago Cubs | Chicago Cubs signed free agent RHP Dario Beltre to a minor league contract. |
| Jan 22, 2020 | Signed as free agent | Josh Donaldson | — | Minnesota Twins | Minnesota Twins signed free agent 3B Josh Donaldson. |
| Jan 22, 2020 | Signed as free agent | Félix Hernández | — | Atlanta Braves | Atlanta Braves signed free agent RHP Felix Hernandez to a minor league contract and invited him to spring training. |
| Jan 22, 2020 | Signed as free agent | Alex Gordon | — | Kansas City Royals | Kansas City Royals signed free agent LF Alex Gordon. |
| Jan 22, 2020 | Signed as free agent | Chris Rusin | — | Atlanta Braves | Atlanta Braves signed free agent LHP Chris Rusin to a minor league contract and invited him to spring training. |
| Jan 22, 2020 | Signed as free agent | Yangervis Solarte | — | Atlanta Braves | Atlanta Braves signed free agent 3B Yangervis Solarte to a minor league contract and invited him to spring training. |
| Jan 22, 2020 | Signed as free agent | Shane Robinson | — | Atlanta Braves | Atlanta Braves signed free agent LF Shane Robinson to a minor league contract and invited him to spring training. |
| Jan 22, 2020 | Signed as free agent | Francisco Liriano | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Francisco Liriano to a minor league contract and invited him to spring training. |
| Jan 22, 2020 | Signed as free agent | Bud Norris | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Bud Norris to a minor league contract and invited him to spring training. |
| Jan 22, 2020 | Signed as free agent | Drew Storen | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Drew Storen to a minor league contract and invited him to spring training. |
| Jan 22, 2020 | Signed as free agent | Neil Walker | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 1B Neil Walker to a minor league contract and invited him to spring training. |
| Jan 22, 2020 | Signed as free agent | Matt Wieters | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C Matt Wieters. |
| Jan 22, 2020 | Signed as free agent | Juan Nicasio | — | Texas Rangers | Texas Rangers signed free agent RHP Juan Nicasio to a minor league contract and invited him to spring training. |
| Jan 22, 2020 | Signed as free agent | Joe Hudson | — | Seattle Mariners | Seattle Mariners signed free agent C Joe Hudson to a minor league contract and invited him to spring training. |
| Jan 22, 2020 | Signed as free agent | Adel Dilone | — | Atlanta Braves | Atlanta Braves signed free agent RHP Adel Dilone to a minor league contract. |
| Jan 22, 2020 | Signed as free agent | Nick Howard | — | Kansas City Royals | Kansas City Royals signed free agent RHP Nick Howard to a minor league contract. |
| Jan 22, 2020 | Signed as free agent | Kody Eaves | — | Minnesota Twins | Minnesota Twins signed free agent 3B Kody Eaves to a minor league contract. |
| Jan 21, 2020 | Trade | Travis Lakins | Boston Red Sox | Chicago Cubs | Boston Red Sox traded RHP Travis Lakins to Chicago Cubs for Future Considerations. |
| Jan 21, 2020 | Signed as free agent | Adalberto Mejía | — | Chicago White Sox | Chicago White Sox signed free agent LHP Adalberto Mejia to a minor league contract and invited him to spring training. |
| Jan 21, 2020 | Signed as free agent | Andrew Romine | — | Chicago White Sox | Chicago White Sox signed free agent SS Andrew Romine to a minor league contract and invited him to spring training. |
| Jan 21, 2020 | Signed as free agent | Marcell Ozuna | — | Atlanta Braves | Atlanta Braves signed free agent LF Marcell Ozuna. |
| Jan 21, 2020 | Released | Brian Moran | — | Miami Marlins | Miami Marlins released LHP Brian Moran. |
| Jan 21, 2020 | Signed as free agent | Héctor Santiago | — | Detroit Tigers | Detroit Tigers signed free agent LHP Hector Santiago to a minor league contract and invited him to spring training. |
| Jan 21, 2020 | Signed as free agent | Sal Mendez | — | Texas Rangers | Texas Rangers signed free agent LHP Sal Mendez to a minor league contract. |
| Jan 21, 2020 | Signed as free agent | Daniel Corcino | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Daniel Corcino to a minor league contract. |
| Jan 21, 2020 | Signed as free agent | Bradley Gonzales | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Bradley Gonzales to a minor league contract. |
| Jan 20, 2020 | 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. |
| Jan 20, 2020 | Signed as free agent | Joe Panik | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 2B Joe Panik to a minor league contract and invited him to spring training. |
| Jan 20, 2020 | Signed as free agent | Ryan Dull | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Ryan Dull to a minor league contract and invited him to spring training. |
| Jan 20, 2020 | Signed as free agent | Caleb Joseph | — | Toronto Blue Jays | Toronto Blue Jays signed free agent C Caleb Joseph to a minor league contract and invited him to spring training. |
| Jan 20, 2020 | Signed as free agent | Rubén Tejada | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 2B Ruben Tejada to a minor league contract and invited him to spring training. |
| Jan 20, 2020 | Signed as free agent | René Rivera | — | New York Mets | New York Mets signed free agent C Rene Rivera to a minor league contract and invited him to spring training. |
| Jan 20, 2020 | Signed as free agent | Josh Phegley | — | Chicago Cubs | Chicago Cubs signed free agent C Josh Phegley to a minor league contract and invited him to spring training. |
| Jan 20, 2020 | Signed as free agent | Junior Manon | — | Los Angeles Angels | Los Angeles Angels signed free agent SS Junior Manon to a minor league contract. |
| Jan 20, 2020 | Signed as free agent | Jordan Milbrath | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jordan Milbrath to a minor league contract. |
| Jan 18, 2020 | Signed as free agent | Rob Brantly | — | San Francisco Giants | San Francisco Giants signed free agent C Rob Brantly to a minor league contract and invited him to spring training. |
| Jan 18, 2020 | Signed as free agent | Erasmo Pinales | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Erasmo Pinales to a minor league contract. |
| Jan 17, 2020 | Trade | Matt Hall | Detroit Tigers | Boston Red Sox | Detroit Tigers traded LHP Matt Hall to Boston Red Sox for C Jhon Nunez. |
| Jan 17, 2020 | Trade | Casey Sadler | Los Angeles Dodgers | Chicago Cubs | Los Angeles Dodgers traded RHP Casey Sadler to Chicago Cubs for 2B Clayton Daniel. |
| Jan 17, 2020 | Signed as free agent | Craig Stammen | — | San Diego Padres | San Diego Padres signed free agent RHP Craig Stammen. |
| Jan 17, 2020 | Signed as free agent | Jesse Biddle | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Jesse Biddle to a minor league contract and invited him to spring training. |
| Jan 17, 2020 | Signed as free agent | Bryan Mitchell | — | Chicago White Sox | Chicago White Sox signed free agent RHP Bryan Mitchell to a minor league contract and invited him to spring training. |
| Jan 17, 2020 | Signed as free agent | Mickey Jannis | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Mickey Jannis to a minor league contract. |
| Jan 17, 2020 | Signed as free agent | Jediah Kwidama | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jediah Kwidama to a minor league contract. |
| Jan 17, 2020 | Signed as free agent | Parker Morin | — | Kansas City Royals | Kansas City Royals signed free agent C Parker Morin to a minor league contract. |
| Jan 17, 2020 | Signed as free agent | Craig Stammen | — | San Diego Padres | San Diego Padres signed free agent P Craig Stammen. |
| Jan 17, 2020 | Signed as free agent | Craig Stammen | — | San Diego Padres | San Diego Padres signed free agent P Craig Stammen. |
| Jan 16, 2020 | Signed as free agent | Drew Smyly | — | San Francisco Giants | San Francisco Giants signed free agent LHP Drew Smyly. |
| Jan 16, 2020 | Signed as free agent | Adeiny Hechavarría | — | Atlanta Braves | Atlanta Braves signed free agent 2B Adeiny Hechavarria. |
| Jan 16, 2020 | Signed as free agent | Kendry Montesino | — | Miami Marlins | Miami Marlins signed free agent RHP Kendry Montesino to a minor league contract. |
| Jan 16, 2020 | Signed as free agent | Gabriel Flores | — | Miami Marlins | Miami Marlins signed free agent C Gabriel Flores to a minor league contract. |
| Jan 16, 2020 | Signed as free agent | Christopher Ramirez | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Christopher Ramirez to a minor league contract. |
| Jan 15, 2020 | Trade | James Nelson | Miami Marlins | New York Yankees | New York Yankees traded LHP Stephen Tarpley to Miami Marlins for cash and 3B James Nelson. |
| Jan 15, 2020 | Trade | Sam Travis | Boston Red Sox | Texas Rangers | Texas Rangers traded LHP Jeffrey Springs to Boston Red Sox for 1B Sam Travis. |
| Jan 15, 2020 | Signed as free agent | Robinson Chirinos | — | Texas Rangers | Texas Rangers signed free agent C Robinson Chirinos. |
| Jan 15, 2020 | Signed as free agent | Todd Frazier | — | Texas Rangers | Texas Rangers signed free agent 3B Todd Frazier. |
| Jan 15, 2020 | Released | Zack Cozart | — | San Francisco Giants | San Francisco Giants released 3B Zack Cozart. |
| Jan 15, 2020 | Signed as free agent | Alex Wood | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Alex Wood. |
| Jan 15, 2020 | Signed as free agent | Nate Jones | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Nate Jones to a minor league contract and invited him to spring training. |
| Jan 15, 2020 | Signed as free agent | Brandon Barnes | — | Cincinnati Reds | Cincinnati Reds signed free agent OF Brandon Barnes to a minor league contract. |
| Jan 15, 2020 | Signed as free agent | Chasen Bradford | — | Seattle Mariners | Seattle Mariners signed free agent RHP Chasen Bradford to a minor league contract. |
| Jan 15, 2020 | Signed as free agent | Bengie González | — | Washington Nationals | Washington Nationals signed free agent SS Bengie Gonzalez to a minor league contract. |
| Jan 15, 2020 | Signed as free agent | José Manuel Fernández | — | Atlanta Braves | Atlanta Braves signed free agent LHP Jose Manuel Fernandez to a minor league contract. |
| Jan 15, 2020 | Signed as free agent | Matt Tenuta | — | Chicago Cubs | Chicago Cubs signed free agent LHP Matt Tenuta to a minor league contract. |
| Jan 14, 2020 | Signed as free agent | Daniel Hudson | — | Washington Nationals | Washington Nationals signed free agent RHP Daniel Hudson. |
| Jan 14, 2020 | Signed as free agent | Steve Cishek | — | Chicago White Sox | Chicago White Sox signed free agent RHP Steve Cishek. |
| Jan 14, 2020 | Trade | Austin Dean | Miami Marlins | St. Louis Cardinals | Miami Marlins traded LF Austin Dean to St. Louis Cardinals for RF Diowill Burgos. |
| Jan 14, 2020 | Trade | Jeremy Beasley | Los Angeles Angels | Arizona Diamondbacks | Arizona Diamondbacks traded RHP Matt Andriese to Los Angeles Angels for RHP Jeremy Beasley. |
| Jan 14, 2020 | Signed as free agent | Tyson Ross | — | San Francisco Giants | San Francisco Giants signed free agent RHP Tyson Ross to a minor league contract and invited him to spring training. |
| Jan 14, 2020 | Signed as free agent | Jared Koenig | — | Athletics | Oakland Athletics signed free agent LHP Jared Koenig to a minor league contract. |
| Jan 14, 2020 | Signed as free agent | Claudio Custodio | — | Atlanta Braves | Atlanta Braves signed free agent RHP Claudio Custodio to a minor league contract. |
| Jan 14, 2020 | Signed as free agent | Daniel Hudson | — | Washington Nationals | Washington Nationals signed free agent P Daniel Hudson. |
| Jan 14, 2020 | Signed as free agent | Daniel Hudson | — | Washington Nationals | Washington Nationals signed free agent P Daniel Hudson. |
| Jan 14, 2020 | Signed as free agent | Daniel Hudson | — | Washington Nationals | Washington Nationals signed free agent RHP Daniel Hudson. |
| Jan 14, 2020 | Signed as free agent | Daniel Hudson | — | Washington Nationals | Washington Nationals signed free agent RHP Daniel Hudson. |
| Jan 13, 2020 | Signed as free agent | Kevan Smith | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Kevan Smith to a minor league contract and invited him to spring training. |
| Jan 13, 2020 | Signed as free agent | Chris Herrmann | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Chris Herrmann to a minor league contract and invited him to spring training. |
| Jan 13, 2020 | Signed as free agent | Ryan LaMarre | — | Tampa Bay Rays | Tampa Bay Rays signed free agent OF Ryan LaMarre to a minor league contract and invited him to spring training. |
| Jan 13, 2020 | Signed as free agent | Angel German | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Angel German to a minor league contract. |
| Jan 13, 2020 | Signed as free agent | Aaron Slegers | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Aaron Slegers to a minor league contract and invited him to spring training. |
| Jan 13, 2020 | Signed as free agent | D.J. Snelten | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LHP D.J. Snelten to a minor league contract and invited him to spring training. |
| Jan 13, 2020 | Signed as free agent | Conrad Gregor | — | Tampa Bay Rays | Tampa Bay Rays signed free agent 1B Conrad Gregor to a minor league contract. |
| Jan 13, 2020 | Signed as free agent | Trevor Rosenthal | — | Kansas City Royals | Kansas City Royals signed free agent RHP Trevor Rosenthal to a minor league contract and invited him to spring training. |
| Jan 13, 2020 | Signed as free agent | Braden Shipley | — | Kansas City Royals | Kansas City Royals signed free agent RHP Braden Shipley to a minor league contract and invited him to spring training. |
| Jan 13, 2020 | Trade | Alfonso Rivas III | Athletics | Chicago Cubs | Chicago Cubs traded 2B Tony Kemp to Oakland Athletics for 1B Alfonso Rivas. |
| Jan 13, 2020 | Signed as free agent | Iván Nova | — | Detroit Tigers | Detroit Tigers signed free agent RHP Ivan Nova. |
| Jan 13, 2020 | Signed as free agent | Carlos Asuaje | — | Chicago Cubs | Chicago Cubs signed free agent 2B Carlos Asuaje to a minor league contract and invited him to spring training. |
| Jan 13, 2020 | Signed as free agent | Cameron Gibbens | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Cameron Gibbens to a minor league contract. |
| Jan 13, 2020 | Signed as free agent | Junior Cerda | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Junior Cerda to a minor league contract. |
| Jan 13, 2020 | Signed as free agent | Erison Rincon | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Erison Rincon to a minor league contract. |
| Jan 13, 2020 | Signed as free agent | Darlin Almonte | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Darlin Almonte to a minor league contract. |
| Jan 13, 2020 | Signed as free agent | Luis Hernandez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Luis Hernandez to a minor league contract. |
| Jan 12, 2020 | Signed as free agent | Jerry Blevins | — | San Francisco Giants | San Francisco Giants signed free agent LHP Jerry Blevins to a minor league contract and invited him to spring training. |
| Jan 11, 2020 | Signed as free agent | Brett Gardner | — | New York Yankees | New York Yankees signed free agent CF Brett Gardner. |
| Jan 10, 2020 | Signed as free agent | John Ryan Murphy | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C John Ryan Murphy to a minor league contract and invited him to spring training. |
| Jan 10, 2020 | Signed as free agent | Jake Elmore | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 2B Jake Elmore to a minor league contract and invited him to spring training. |
| Jan 10, 2020 | Trade | Austin Brice | Miami Marlins | Boston Red Sox | Miami Marlins traded RHP Austin Brice to Boston Red Sox for 2B Angeudis Santos. |
| Jan 10, 2020 | Released | Adalberto Mejía | — | Los Angeles Angels | Los Angeles Angels released LHP Adalberto Mejia. |
| Jan 10, 2020 | Signed as free agent | Jedd Gyorko | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 3B Jedd Gyorko. |
| Jan 10, 2020 | Signed as free agent | Yadiel Rivera | — | Texas Rangers | Texas Rangers signed free agent 3B Yadiel Rivera to a minor league contract and invited him to spring training. |
| Jan 10, 2020 | Signed as free agent | Alberto Rosario | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Alberto Rosario to a minor league contract. |
| Jan 10, 2020 | Signed as free agent | César Valdez | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Cesar Valdez to a minor league contract. |
| Jan 10, 2020 | Signed as free agent | Winston Abreu | — | Kansas City Royals | Kansas City Royals signed free agent RHP Winston Abreu to a minor league contract. |
| Jan 10, 2020 | Signed as free agent | Allan de San Miguel | — | Kansas City Royals | Kansas City Royals signed free agent C Allan de San Miguel to a minor league contract. |
| Jan 10, 2020 | Signed as free agent | Jarett Rindfleisch | — | Minnesota Twins | Minnesota Twins signed free agent C Jarett Rindfleisch to a minor league contract. |
| Jan 9, 2020 | Signed as free agent | Ryan Cordell | — | New York Mets | New York Mets signed free agent RF Ryan Cordell to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Signed as free agent | Johneshwy Fargas | — | New York Mets | New York Mets signed free agent OF Johneshwy Fargas to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Signed as free agent | Jake Hager | — | New York Mets | New York Mets signed free agent 2B Jake Hager to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Signed as free agent | Pedro Payano | — | New York Mets | New York Mets signed free agent RHP Pedro Payano to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Signed as free agent | Francisco Rios | — | New York Mets | New York Mets signed free agent RHP Francisco Rios to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Signed as free agent | David Rodríguez | — | New York Mets | New York Mets signed free agent C David Rodriguez to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Signed as free agent | Adonis Uceta | — | New York Mets | New York Mets signed free agent RHP Adonis Uceta to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Signed as free agent | Edwin Encarnación | — | Chicago White Sox | Chicago White Sox signed free agent 1B Edwin Encarnacion. |
| Jan 9, 2020 | Signed as free agent | Héctor Rondón | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Hector Rondon. |
| Jan 9, 2020 | Signed as free agent | Francisco Cervelli | — | Miami Marlins | Miami Marlins signed free agent C Francisco Cervelli. |
| Jan 9, 2020 | Signed as free agent | Logan Morrison | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 1B Logan Morrison to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | 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. |
| Jan 9, 2020 | Signed as free agent | Luis García | — | Texas Rangers | Texas Rangers signed free agent RHP Luis Garcia to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Signed as free agent | James Jones | — | Texas Rangers | Texas Rangers signed free agent LHP James Jones to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Trade | Matthew Liberatore | Tampa Bay Rays | St. Louis Cardinals | St. Louis Cardinals traded 1B Jose Martinez, LF Randy Arozarena and Future Considerations to Tampa Bay Rays for LHP Matthew Liberatore, C Edgardo Rodriguez and Future Considerations. |
| Jan 9, 2020 | Trade | Peyton Battenfield | Houston Astros | Tampa Bay Rays | Tampa Bay Rays traded RHP Austin Pruitt to Houston Astros for RHP Peyton Battenfield and OF Cal Stevenson. |
| Jan 9, 2020 | Signed as free agent | Guillermo Heredia | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent Guillermo Heredia. |
| Jan 9, 2020 | Signed as free agent | Ariel Serrano | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Ariel Serrano to a minor league contract. |
| Jan 9, 2020 | Signed as free agent | Travis Snider | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LF Travis Snider to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Signed as free agent | Edubray Ramos | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Edubray Ramos to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Signed as free agent | Jose Lobatón | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Jose Lobaton to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Signed as free agent | Tim Collins | — | Colorado Rockies | Colorado Rockies signed free agent LHP Tim Collins to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Signed as free agent | Yohemy Nolasco | — | Chicago White Sox | Chicago White Sox signed free agent RHP Yohemy Nolasco to a minor league contract. |
| Jan 9, 2020 | Signed as free agent | L.J. Mazzilli | — | Chicago White Sox | Chicago White Sox signed free agent 2B L.J. Mazzilli to a minor league contract. |
| Jan 9, 2020 | Signed as free agent | Connor Sadzeck | — | Chicago White Sox | Chicago White Sox signed free agent RHP Connor Sadzeck to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Signed as free agent | Tyler Eppler | — | Washington Nationals | Washington Nationals signed free agent RHP Tyler Eppler to a minor league contract. |
| Jan 9, 2020 | Signed as free agent | Blake Gailen | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Blake Gailen to a minor league contract. |
| Jan 9, 2020 | Signed as free agent | Angel Franco | — | Kansas City Royals | Kansas City Royals signed free agent 2B Angel Franco to a minor league contract. |
| Jan 9, 2020 | Signed as free agent | Connor Sadzeck | — | Chicago White Sox | Chicago White Sox signed free agent RHP Connor Sadzeck to a minor league contract and invited him to spring training. |
| Jan 9, 2020 | Signed as free agent | Connor Sadzeck | — | Chicago White Sox | Chicago White Sox signed free agent P Connor Sadzeck. |
| Jan 8, 2020 | Released | Sam Haggerty | — | New York Mets | New York Mets released 2B Sam Haggerty. |
| Jan 8, 2020 | Trade | Eric Haase | Cleveland Guardians | Detroit Tigers | Cleveland Indians traded C Eric Haase to Detroit Tigers for cash. |
| Jan 8, 2020 | Signed as free agent | Asdrúbal Cabrera | — | Washington Nationals | Washington Nationals signed free agent 3B Asdrubal Cabrera. |
| Jan 8, 2020 | Signed as free agent | Eric Thames | — | Washington Nationals | Washington Nationals signed free agent 1B Eric Thames. |
| Jan 8, 2020 | Signed as free agent | Jimmy Nelson | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Jimmy Nelson. |
| Jan 8, 2020 | Signed as free agent | Cheslor Cuthbert | — | Chicago White Sox | Chicago White Sox signed free agent LF Cheslor Cuthbert to a minor league contract and invited him to spring training. |
| Jan 8, 2020 | Signed as free agent | Alex McRae | — | Chicago White Sox | Chicago White Sox signed free agent RHP Alex McRae to a minor league contract and invited him to spring training. |
| Jan 8, 2020 | Signed as free agent | Ronnie Freeman | — | Athletics | Oakland Athletics signed free agent C Ronnie Freeman to a minor league contract and invited him to spring training. |
| Jan 8, 2020 | Signed as free agent | Yefry Ramírez | — | New York Mets | New York Mets signed free agent RHP Yefry Ramirez to a minor league contract and invited him to spring training. |
| Jan 8, 2020 | Signed as free agent | Ronald Peña | — | Washington Nationals | Washington Nationals signed free agent RHP Ronald Pena to a minor league contract. |
| Jan 8, 2020 | Signed as free agent | Walki Lezan | — | San Diego Padres | San Diego Padres signed free agent RHP Walki Lezan to a minor league contract. |
| Jan 8, 2020 | Signed as free agent | Carlos Tocci | — | Washington Nationals | Washington Nationals signed free agent CF Carlos Tocci to a minor league contract and invited him to spring training. |
| Jan 8, 2020 | Signed as free agent | Ryan McLaughlin | — | Seattle Mariners | Seattle Mariners signed free agent SS Ryan McLaughlin to a minor league contract. |
| Jan 8, 2020 | Signed as free agent | Luis Sardinas | — | Washington Nationals | Washington Nationals signed free agent SS Luis Sardinas to a minor league contract. |
| Jan 8, 2020 | Signed as free agent | Deiferson Barreto | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 3B Deiferson Barreto to a minor league contract. |
| Jan 7, 2020 | Signed as free agent | Corey Dickerson | — | Miami Marlins | Miami Marlins signed free agent OF Corey Dickerson. |
| Jan 7, 2020 | Signed as free agent | Starlin Castro | — | Washington Nationals | Washington Nationals signed free agent 2B Starlin Castro. |
| Jan 7, 2020 | Signed as free agent | Jose Iglesias | — | Baltimore Orioles | Baltimore Orioles signed free agent SS Jose Iglesias. |
| Jan 7, 2020 | Signed as free agent | Jason Castro | — | Los Angeles Angels | Los Angeles Angels signed free agent C Jason Castro. |
| Jan 7, 2020 | Signed as free agent | Jason Castro | — | Los Angeles Angels | Los Angeles Angels signed free agent C Jason Castro. |
| Jan 7, 2020 | Signed as free agent | Brooks Raley | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Brooks Raley to a minor league contract and invited him to spring training. |
| Jan 7, 2020 | Signed as free agent | Óscar Hernández | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C Oscar Hernandez to a minor league contract and invited him to spring training. |
| Jan 7, 2020 | Signed as free agent | William Reyes | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP William Reyes to a minor league contract. |
| Jan 7, 2020 | Signed as free agent | Hector Hernandez | — | San Diego Padres | San Diego Padres signed free agent LHP Hector Hernandez to a minor league contract. |
| Jan 7, 2020 | Signed as free agent | Roberto Bautista | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Roberto Bautista to a minor league contract. |
| Jan 7, 2020 | Signed as free agent | Bruno López | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Bruno Lopez to a minor league contract. |
| Jan 7, 2020 | Signed as free agent | Merandy Gonzalez | — | Washington Nationals | Washington Nationals signed free agent RHP Merandy Gonzalez to a minor league contract. |
| Jan 7, 2020 | Signed as free agent | Andy Ferguson | — | Kansas City Royals | Kansas City Royals signed free agent RHP Andy Ferguson to a minor league contract. |
| Jan 7, 2020 | Signed as free agent | Ricky Knapp | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Ricky Knapp to a minor league contract. |
| Jan 7, 2020 | Signed as free agent | Hamlet Marte | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Hamlet Marte to a minor league contract. |
| Jan 7, 2020 | Signed as free agent | Anthony Vizcaya | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Anthony Vizcaya to a minor league contract. |
| Jan 7, 2020 | Signed as free agent | Justin Novak | — | Seattle Mariners | Seattle Mariners signed free agent C Justin Novak to a minor league contract. |
| Jan 6, 2020 | Trade | José Estrada | Los Angeles Angels | Miami Marlins | Miami Marlins traded RHP Kyle Keller to Los Angeles Angels for C Jose Estrada. |
| Jan 6, 2020 | Signed as free agent | Shogo Akiyama | — | Cincinnati Reds | Cincinnati Reds signed free agent CF Shogo Akiyama. |
| Jan 6, 2020 | Signed as free agent | Matt Carasiti | — | San Francisco Giants | San Francisco Giants signed free agent RHP Matt Carasiti to a minor league contract and invited him to spring training. |
| Jan 6, 2020 | Signed as free agent | Rico Garcia | — | San Francisco Giants | San Francisco Giants signed free agent RHP Rico Garcia to a minor league contract and invited him to spring training. |
| Jan 6, 2020 | Signed as free agent | Sam Moll | — | San Francisco Giants | San Francisco Giants signed free agent LHP Sam Moll to a minor league contract and invited him to spring training. |
| Jan 6, 2020 | Signed as free agent | Andrew Triggs | — | San Francisco Giants | San Francisco Giants signed free agent RHP Andrew Triggs to a minor league contract and invited him to spring training. |
| Jan 6, 2020 | Signed as free agent | Tyler Heineman | — | San Francisco Giants | San Francisco Giants signed free agent C Tyler Heineman to a minor league contract and invited him to spring training. |
| Jan 6, 2020 | Signed as free agent | Chadwick Tromp | — | San Francisco Giants | San Francisco Giants signed free agent C Chadwick Tromp to a minor league contract and invited him to spring training. |
| Jan 6, 2020 | Signed as free agent | Drew Robinson | — | San Francisco Giants | San Francisco Giants signed free agent OF Drew Robinson to a minor league contract and invited him to spring training. |
| Jan 6, 2020 | Signed as free agent | Joey Rickard | — | San Francisco Giants | San Francisco Giants signed free agent RF Joey Rickard to a minor league contract and invited him to spring training. |
| Jan 6, 2020 | Signed as free agent | Jamie Westbrook | — | San Francisco Giants | San Francisco Giants signed free agent OF Jamie Westbrook to a minor league contract and invited him to spring training. |
| Jan 6, 2020 | Signed as free agent | David Huff | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP David Huff to a minor league contract. |
| Jan 6, 2020 | Signed as free agent | Pat Venditte | — | Miami Marlins | Miami Marlins signed free agent SHP Pat Venditte to a minor league contract and invited him to spring training. |
| Jan 6, 2020 | Signed as free agent | Ryan Cook | — | Miami Marlins | Miami Marlins signed free agent RHP Ryan Cook to a minor league contract and invited him to spring training. |
| Jan 6, 2020 | Signed as free agent | Elias Díaz | — | Colorado Rockies | Colorado Rockies signed free agent C Elias Diaz to a minor league contract and invited him to spring training. |
| Jan 6, 2020 | Signed as free agent | Sebastian Castro | — | Washington Nationals | Washington Nationals signed free agent IF Sebastian Castro to a minor league contract. |
| Jan 4, 2020 | Signed as free agent | Alex Wilson | — | Detroit Tigers | Detroit Tigers signed free agent RHP Alex Wilson to a minor league contract and invited him to spring training. |
| Jan 4, 2020 | Signed as free agent | Chris Nunn | — | Atlanta Braves | Atlanta Braves signed free agent LHP Chris Nunn to a minor league contract. |
| Jan 4, 2020 | Signed as free agent | Trevor Hildenberger | — | Boston Red Sox | Boston Red Sox signed free agent RHP Trevor Hildenberger to a minor league contract and invited him to spring training. |
| Jan 4, 2020 | Signed as free agent | Edgar Zuniga | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Edgar Zuniga to a minor league contract. |
| Jan 4, 2020 | Signed as free agent | Jared Loyo | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Jared Loyo to a minor league contract. |
| Jan 4, 2020 | Signed as free agent | Pedro Reyes | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Pedro Reyes to a minor league contract. |
| Jan 3, 2020 | Signed as free agent | Will Harris | — | Washington Nationals | Washington Nationals signed free agent RHP Will Harris. |
| Jan 3, 2020 | Signed as free agent | Trevor Clifton | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Trevor Clifton to a minor league contract. |
| Jan 3, 2020 | Signed as free agent | Joe Mantiply | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Joe Mantiply to a minor league contract and invited him to spring training. |
| Jan 3, 2020 | Signed as free agent | Javier Zenizo | — | San Diego Padres | San Diego Padres signed free agent RHP Javier Zenizo to a minor league contract. |
| Jan 3, 2020 | Signed as free agent | Eduard Pinto | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Eduard Pinto to a minor league contract. |
| Jan 2, 2020 | Signed as free agent | Henry Ramos | — | Texas Rangers | Texas Rangers signed free agent OF Henry Ramos to a minor league contract and invited him to spring training. |
| Jan 2, 2020 | Signed as free agent | Kevin Plawecki | — | Boston Red Sox | Boston Red Sox signed free agent C Kevin Plawecki. |
| Jan 2, 2020 | Signed as free agent | Matt Davidson | — | Cincinnati Reds | Cincinnati Reds signed free agent 1B Matt Davidson to a minor league contract and invited him to spring training. |
| Jan 2, 2020 | Signed as free agent | Christian Bethancourt | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Christian Bethancourt to a minor league contract and invited him to spring training. |
| Jan 2, 2020 | Signed as free agent | Ronald Torreyes | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 2B Ronald Torreyes to a minor league contract and invited him to spring training. |
| Jan 2, 2020 | Signed as free agent | Elian Miranda | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 1B Elian Miranda to a minor league contract. |
| Jan 1, 2020 | Signed as free agent | Jesús Liranzo | — | San Francisco Giants | San Francisco Giants signed free agent RHP Jesus Liranzo to a minor league contract. |
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.