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The 2013 season’s official transaction log: 3,185 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, 2013 | Signed as free agent | Jesse Crain | — | Houston Astros | Houston Astros signed free agent RHP Jesse Crain. |
| Dec 30, 2013 | Trade | Chris McGuiness | Texas Rangers | Pittsburgh Pirates | Texas Rangers traded 1B Chris McGuiness to Pittsburgh Pirates for RHP Miles Mikolas. |
| Dec 30, 2013 | Signed as free agent | Justin Henry | — | Boston Red Sox | Boston Red Sox signed free agent 2B Justin Henry to a minor league contract. |
| Dec 30, 2013 | Signed as free agent | Will Rhymes | — | Washington Nationals | Washington Nationals signed free agent 2B Will Rhymes to a minor league contract and invited him to spring training. |
| Dec 30, 2013 | Signed as free agent | Rafael Dolis | — | San Francisco Giants | San Francisco Giants signed free agent RHP Rafael Dolis to a minor league contract and invited him to spring training. |
| Dec 30, 2013 | Signed as free agent | Sandy Rosario | — | San Francisco Giants | San Francisco Giants signed free agent RHP Sandy Rosario to a minor league contract and invited him to spring training. |
| Dec 29, 2013 | Signed as free agent | Josh Spence | — | Miami Marlins | Miami Marlins signed free agent LHP Josh Spence to a minor league contract and invited him to spring training. |
| Dec 28, 2013 | Signed as free agent | Joaquín Benoit | — | San Diego Padres | San Diego Padres signed free agent RHP Joaquin Benoit. |
| Dec 28, 2013 | Signed as free agent | Jason Donald | — | Kansas City Royals | Kansas City Royals signed free agent 2B Jason Donald to a minor league contract and invited him to spring training. |
| Dec 28, 2013 | Signed as free agent | Melky Mesa | — | Kansas City Royals | Kansas City Royals signed free agent CF Melky Mesa to a minor league contract and invited him to spring training. |
| Dec 27, 2013 | Signed as free agent | Shin-Soo Choo | — | Texas Rangers | Texas Rangers signed free agent LF Shin-Soo Choo. |
| Dec 27, 2013 | Signed as free agent | Jose Veras | — | Chicago Cubs | Chicago Cubs signed free agent RHP Jose Veras. |
| Dec 27, 2013 | Signed as free agent | Raul Ibanez | — | Los Angeles Angels | Los Angeles Angels signed free agent LF Raul Ibanez. |
| Dec 27, 2013 | Signed as free agent | Kevin Slowey | — | Miami Marlins | Miami Marlins signed free agent RHP Kevin Slowey to a minor league contract and invited him to spring training. |
| Dec 27, 2013 | Released | Chris Volstad | — | Los Angeles Angels | Los Angeles Angels released RHP Chris Volstad. |
| Dec 27, 2013 | Signed as free agent | Luis Urías | — | San Diego Padres | San Diego Padres signed free agent SS Luis Urias to a minor league contract. |
| Dec 27, 2013 | Signed as free agent | Gregory Infante | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Greg Infante to a minor league contract. |
| Dec 26, 2013 | Signed as free agent | Brandon Wood | — | San Diego Padres | San Diego Padres signed free agent SS Brandon Wood to a minor league contract. |
| Dec 26, 2013 | Signed as free agent | Corey Wimberly | — | Minnesota Twins | Minnesota Twins signed free agent 2B Corey Wimberly to a minor league contract. |
| Dec 26, 2013 | Signed as free agent | Misja Harcksen | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Misja Harcksen to a minor league contract. |
| Dec 25, 2013 | Signed as free agent | Yoshinori Tateyama | — | New York Yankees | New York Yankees signed free agent RHP Yoshinori Tateyama to a minor league contract and invited him to spring training. |
| Dec 24, 2013 | Signed as free agent | Munenori Kawasaki | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Munenori Kawasaki to a minor league contract and invited him to spring training. |
| Dec 24, 2013 | Signed as free agent | Chris Perez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Chris Perez. |
| Dec 24, 2013 | Signed as free agent | Jamey Wright | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Jamey Wright. |
| Dec 24, 2013 | Signed as free agent | Juan Uribe | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 3B Juan Uribe. |
| Dec 24, 2013 | Signed as free agent | Bruce Billings | — | New York Yankees | New York Yankees signed free agent RHP Bruce Billings to a minor league contract and invited him to spring training. |
| Dec 24, 2013 | Signed as free agent | Robinson Cancel | — | Atlanta Braves | Atlanta Braves signed free agent C Robinson Cancel to a minor league contract. |
| Dec 23, 2013 | Signed as free agent | Mike Pelfrey | — | Minnesota Twins | Minnesota Twins signed free agent RHP Mike Pelfrey. |
| Dec 23, 2013 | Signed as free agent | Kurt Suzuki | — | Minnesota Twins | Minnesota Twins signed free agent C Kurt Suzuki. |
| Dec 23, 2013 | Signed as free agent | Gumercindo Gonzalez | — | Miami Marlins | Miami Marlins signed free agent LHP Jose Gonzalez to a minor league contract. |
| Dec 23, 2013 | Signed as free agent | Bo Takahashi | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Rodrigo Takahashi to a minor league contract. |
| Dec 23, 2013 | Signed as free agent | Kevin Ahrens | — | Atlanta Braves | Atlanta Braves signed free agent 1B Kevin Ahrens to a minor league contract. |
| Dec 22, 2013 | Signed as free agent | Anthony Phillips | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Anthony Phillips to a minor league contract. |
| Dec 22, 2013 | Signed as free agent | Matt Tolbert | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 2B Matt Tolbert to a minor league contract. |
| Dec 21, 2013 | Signed as free agent | Luis Jimenez | — | Texas Rangers | Texas Rangers signed free agent RHP Luis Jimenez to a minor league contract. |
| Dec 20, 2013 | Signed as free agent | Eric Chavez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 3B Eric Chavez. |
| Dec 20, 2013 | Released | Pedro Figueroa | — | Athletics | Oakland Athletics released Pedro Figueroa. |
| Dec 20, 2013 | Signed as free agent | Ryan Feierabend | — | Texas Rangers | Texas Rangers signed free agent LHP Ryan Feierabend to a minor league contract and invited him to spring training. |
| Dec 20, 2013 | Signed as free agent | Kensuke Tanaka | — | Texas Rangers | Texas Rangers signed free agent LF Kensuke Tanaka to a minor league contract and invited him to spring training. |
| Dec 20, 2013 | Signed as free agent | Daniel McCutchen | — | Texas Rangers | Texas Rangers signed free agent RHP Daniel McCutchen to a minor league contract. |
| Dec 20, 2013 | Signed as free agent | J.P. Howell | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP J.P. Howell. |
| Dec 20, 2013 | Signed as free agent | Ryan Roberts | — | Chicago Cubs | Chicago Cubs signed free agent 2B Ryan Roberts to a minor league contract and invited him to spring training. |
| Dec 20, 2013 | Signed as free agent | Omar Poveda | — | Chicago White Sox | Chicago White Sox signed free agent Omar Poveda. |
| Dec 20, 2013 | Signed as free agent | Joe Benson | — | Miami Marlins | Miami Marlins signed free agent CF Joe Benson to a minor league contract and invited him to spring training. |
| Dec 20, 2013 | Signed as free agent | Xavier Paul | — | Baltimore Orioles | Baltimore Orioles signed free agent LF Xavier Paul to a minor league contract and invited him to spring training. |
| Dec 20, 2013 | Signed as free agent | Craig Westcott | — | Miami Marlins | Miami Marlins signed free agent RHP Craig Westcott to a minor league contract. |
| Dec 20, 2013 | Signed as free agent | Jordany Valdespin | — | Miami Marlins | Miami Marlins signed free agent CF Jordany Valdespin to a minor league contract. |
| Dec 20, 2013 | Signed as free agent | Milan Post | — | Milwaukee Brewers | Milwaukee Brewers signed free agent C Milan Post to a minor league contract. |
| Dec 20, 2013 | Signed as free agent | Chris Snyder | — | Washington Nationals | Washington Nationals signed free agent C Chris Snyder to a minor league contract and invited him to spring training. |
| Dec 20, 2013 | Signed as free agent | Lay Batista | — | Atlanta Braves | Atlanta Braves signed free agent RHP Lay Batista to a minor league contract and invited him to spring training. |
| Dec 20, 2013 | Signed as free agent | Dario Saunders | — | Cincinnati Reds | Cincinnati Reds signed free agent CF Dario Saunders to a minor league contract. |
| Dec 20, 2013 | Signed as free agent | Ken Paredes | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Ken Paredes to a minor league contract. |
| Dec 19, 2013 | Trade | Corey Brown | Washington Nationals | Athletics | Washington Nationals traded LF Corey Brown to Oakland Athletics for cash. |
| Dec 19, 2013 | Signed as free agent | Carlos Beltrán | — | New York Yankees | New York Yankees signed free agent RF Carlos Beltran. |
| Dec 19, 2013 | Signed as free agent | John Axford | — | Cleveland Guardians | Cleveland Indians signed free agent RHP John Axford. |
| Dec 19, 2013 | Signed as free agent | Ronald Belisario | — | Chicago White Sox | Chicago White Sox signed free agent RHP Ronald Belisario. |
| Dec 19, 2013 | Signed as free agent | Mitch Maier | — | Chicago Cubs | Chicago Cubs signed free agent CF Mitch Maier to a minor league contract and invited him to spring training. |
| Dec 19, 2013 | Signed as free agent | Emmanuel Burriss | — | Washington Nationals | Washington Nationals signed free agent SS Emmanuel Burriss to a minor league contract. |
| Dec 19, 2013 | Signed as free agent | Gabriel Arias | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Gabriel Arias to a minor league contract. |
| Dec 19, 2013 | Signed as free agent | Matt Daley | — | New York Yankees | New York Yankees signed free agent RHP Matt Daley to a minor league contract and invited him to spring training. |
| Dec 19, 2013 | Signed as free agent | Casey Weathers | — | San Francisco Giants | San Francisco Giants signed free agent RHP Casey Weathers to a minor league contract. |
| Dec 19, 2013 | Signed as free agent | Johan Yan | — | Texas Rangers | Texas Rangers signed free agent RHP Johan Yan to a minor league contract. |
| Dec 19, 2013 | Signed as free agent | Trevor Bell | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Trevor Bell to a minor league contract and invited him to spring training. |
| Dec 19, 2013 | Signed as free agent | Dilson Fernandez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent C Dilson Fernandez to a minor league contract. |
| Dec 19, 2013 | Signed as free agent | Adonis Rosa | — | New York Yankees | New York Yankees signed free agent RHP Adonis Rosa to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Roberto Hernandez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Roberto Hernandez. |
| Dec 18, 2013 | Signed as free agent | Travis Ishikawa | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 1B Travis Ishikawa to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Michael Martinez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 2B Michael Martinez to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Kyle McPherson | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Kyle McPherson to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Daniel Schlereth | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Daniel Schlereth to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Adam Wilk | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Adam Wilk to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Brandon Mann | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Brandon Mann to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Elvin Ramirez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Elvin Ramirez to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Tony Gwynn Jr. | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LF Tony Gwynn to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Dave Sappelt | — | Philadelphia Phillies | Philadelphia Phillies signed free agent CF Dave Sappelt to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Lou Marson | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Lou Marson to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Sean O'Sullivan | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Sean O'Sullivan to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Casey McGehee | — | Miami Marlins | Miami Marlins signed free agent 3B Casey McGehee. |
| Dec 18, 2013 | Trade | Josh Outman | Colorado Rockies | Cleveland Guardians | Colorado Rockies traded LHP Josh Outman to Cleveland Indians for CF Drew Stubbs. |
| Dec 18, 2013 | Trade | Ryan Doumit | Minnesota Twins | Atlanta Braves | Minnesota Twins traded LF Ryan Doumit to Atlanta Braves for LHP Sean Gilmartin. |
| Dec 18, 2013 | Trade | Danny Valencia | Baltimore Orioles | Kansas City Royals | Baltimore Orioles traded 3B Danny Valencia to Kansas City Royals for LF David Lough. |
| Dec 18, 2013 | Signed as free agent | Franklin Gutierrez | — | Seattle Mariners | Seattle Mariners signed free agent CF Franklin Gutierrez. |
| Dec 18, 2013 | Trade | Jesus Guzman | San Diego Padres | Houston Astros | San Diego Padres traded 1B Jesus Guzman to Houston Astros for 3B Ryan Jackson. |
| Dec 18, 2013 | Signed as free agent | Justin Germano | — | Texas Rangers | Texas Rangers signed free agent RHP Justin Germano to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Trade | Franklin Morales | Boston Red Sox | Colorado Rockies | Colorado Rockies traded 3B Jonathan Herrera to Boston Red Sox for LHP Franklin Morales and RHP Chris Martin. |
| Dec 18, 2013 | Signed as free agent | Fabio Castillo | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Fabio Castillo to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Chien-Ming Wang | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Chien-Ming Wang to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Tommy Hottovy | — | Chicago Cubs | Chicago Cubs signed free agent LHP Tommy Hottovy to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | John Baker | — | Chicago Cubs | Chicago Cubs signed free agent C John Baker to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Ryan Kalish | — | Chicago Cubs | Chicago Cubs signed free agent LF Ryan Kalish to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Ruben Gotay | — | Cincinnati Reds | Cincinnati Reds signed free agent 3B Ruben Gotay to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Murilo Gouvea | — | Houston Astros | Houston Astros signed free agent RHP Murilo Gouvea to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Cory Wade | — | Kansas City Royals | Kansas City Royals signed free agent RHP Cory Wade to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Alden Carrithers | — | Athletics | Oakland Athletics signed free agent 3B Alden Carrithers to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Chris Bootcheck | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Chris Bootcheck to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Greg Smith | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Greg Smith to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Andrew Carignan | — | San Francisco Giants | San Francisco Giants signed free agent RHP Andrew Carignan to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Andrew Carignan | — | San Francisco Giants | San Francisco Giants signed free agent Andrew Carignan. |
| Dec 18, 2013 | Signed as free agent | Julio Lugo | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Julio Lugo to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Atahualpa Severino | — | Atlanta Braves | Atlanta Braves signed free agent LHP Atahualpa Severino to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Shawn O'Malley | — | Los Angeles Angels | Los Angeles Angels signed free agent SS Shawn O'Malley to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Kyle Hudson | — | Los Angeles Angels | Los Angeles Angels signed free agent LF Kyle Hudson to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Jason Pridie | — | Colorado Rockies | Colorado Rockies signed free agent CF Jason Pridie to a minor league contract and invited him to spring training. |
| Dec 18, 2013 | Signed as free agent | Michael Ramirez | — | Colorado Rockies | Colorado Rockies signed free agent C Michael Ramirez to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Wladimir Galindo | — | Chicago Cubs | Chicago Cubs signed free agent 3B Wladimir Galindo to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Yohander Quintana | — | Colorado Rockies | Colorado Rockies signed free agent RHP Yohander Quintana to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Derlin Espinal | — | Detroit Tigers | Detroit Tigers signed free agent LHP Derlin Espinal to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Ken Figueroa | — | Detroit Tigers | Detroit Tigers signed free agent RHP Ken Figueroa to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Winder Novas | — | Detroit Tigers | Detroit Tigers signed free agent RHP Winder Novas to a minor league contract. |
| Dec 18, 2013 | Signed as free agent | Juan Escorcia | — | New York Yankees | New York Yankees signed free agent RHP Juan Escorcia to a minor league contract. |
| Dec 17, 2013 | Signed as free agent | Steve Tolleson | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 2B Steve Tolleson to a minor league contract and invited him to spring training. |
| Dec 17, 2013 | Signed as free agent | Michael Morse | — | San Francisco Giants | San Francisco Giants signed free agent LF Michael Morse. |
| Dec 17, 2013 | Signed as free agent | Matt Albers | — | Houston Astros | Houston Astros signed free agent RHP Matt Albers. |
| Dec 17, 2013 | Signed as free agent | Shunsuke Watanabe | — | Boston Red Sox | Boston Red Sox signed free agent RHP Shunsuke Watanabe to a minor league contract. |
| Dec 17, 2013 | Signed as free agent | Matt Treanor | — | Cleveland Guardians | Cleveland Indians signed free agent C Matt Treanor to a minor league contract and invited him to spring training. |
| Dec 17, 2013 | Signed as free agent | Johnnie Lowe | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Johnnie Lowe to a minor league contract. |
| Dec 17, 2013 | Signed as free agent | Santo Manzanillo | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Santo Manzanillo to a minor league contract. |
| Dec 17, 2013 | Signed as free agent | Johermyn Chavez | — | Kansas City Royals | Kansas City Royals signed free agent Johermyn Chavez. |
| Dec 17, 2013 | Signed as free agent | Kendri Salvador | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Kendri Salvador to a minor league contract. |
| Dec 17, 2013 | Signed as free agent | Mitch Canham | — | Washington Nationals | Washington Nationals signed free agent C Mitch Canham to a minor league contract. |
| Dec 17, 2013 | Signed as free agent | Justin Friend | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Justin Friend to a minor league contract. |
| Dec 16, 2013 | Signed as free agent | Gavin Floyd | — | Atlanta Braves | Atlanta Braves signed free agent RHP Gavin Floyd. |
| Dec 16, 2013 | Trade | Matt Davidson | Arizona Diamondbacks | Chicago White Sox | Chicago White Sox traded RHP Addison Reed to Arizona Diamondbacks for 3B Matt Davidson. |
| Dec 16, 2013 | Signed as free agent | Jared Goedert | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 3B Jared Goedert to a minor league contract and invited him to spring training. |
| Dec 16, 2013 | Signed as free agent | Tomo Ohka | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Tomo Ohka to a minor league contract and invited him to spring training. |
| Dec 16, 2013 | Signed as free agent | Mark Ellis | — | St. Louis Cardinals | St. Louis Cardinals signed free agent 2B Mark Ellis. |
| Dec 16, 2013 | Signed as free agent | Boone Logan | — | Colorado Rockies | Colorado Rockies signed free agent LHP Boone Logan. |
| Dec 16, 2013 | Signed as free agent | Wesley Wright | — | Chicago Cubs | Chicago Cubs signed free agent LHP Wesley Wright. |
| Dec 16, 2013 | Signed as free agent | Omar Infante | — | Kansas City Royals | Kansas City Royals signed free agent 2B Omar Infante. |
| Dec 16, 2013 | Signed as free agent | Shaun Marcum | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Shaun Marcum to a minor league contract and invited him to spring training. |
| Dec 16, 2013 | Signed as free agent | Iván De Jesús Jr. | — | Baltimore Orioles | Baltimore Orioles signed free agent Ivan De Jesus. |
| Dec 16, 2013 | Signed as free agent | Miguel Celestino | — | Boston Red Sox | Boston Red Sox signed free agent RHP Miguel Celestino to a minor league contract and invited him to spring training. |
| Dec 16, 2013 | Signed as free agent | Matt Spring | — | Boston Red Sox | Boston Red Sox signed free agent C Matt Spring to a minor league contract. |
| Dec 16, 2013 | Signed as free agent | Jose Nina | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Jose Nina to a minor league contract. |
| Dec 16, 2013 | Signed as free agent | Erick De Los Santos | — | San Diego Padres | San Diego Padres signed free agent RHP Erick De Los Santos to a minor league contract. |
| Dec 16, 2013 | Signed as free agent | Sandy Brito | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Sandy Brito to a minor league contract. |
| Dec 16, 2013 | Signed as free agent | Santiago Garrido | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Santiago Garrido to a minor league contract and invited him to spring training. |
| Dec 16, 2013 | Signed as free agent | Maiker Guilamo | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Robert Guilamo to a minor league contract. |
| Dec 16, 2013 | Signed as free agent | Leonel Santiago | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Leonel Santiago to a minor league contract. |
| Dec 16, 2013 | Signed as free agent | Unnamed | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Manuel Nunez to a minor league contract. |
| Dec 16, 2013 | Signed as free agent | Mat Gamel | — | Atlanta Braves | Atlanta Braves signed free agent 1B Mat Gamel to a minor league contract and invited him to spring training. |
| Dec 16, 2013 | Signed as free agent | Gabriel Pirela | — | Houston Astros | Houston Astros signed free agent RHP Gabriel Pirela to a minor league contract. |
| Dec 16, 2013 | Signed as free agent | Jose Rosario | — | Houston Astros | Houston Astros signed free agent RHP Jose Rosario to a minor league contract. |
| Dec 16, 2013 | Signed as free agent | Gabriel Valdez | — | Houston Astros | Houston Astros signed free agent RHP Gabriel Valdez to a minor league contract. |
| Dec 16, 2013 | Signed as free agent | Manue Nunez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Misael Nunez to a minor league contract. |
| Dec 15, 2013 | Signed as free agent | Che-Hsuan Lin | — | Texas Rangers | Texas Rangers signed free agent RHP Che-Hsuan Lin to a minor league contract. |
| Dec 15, 2013 | Signed as free agent | Luis Anthony Collazo | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Luis Collazo to a minor league contract. |
| Dec 15, 2013 | Signed as free agent | Clay Rapada | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Clay Rapada to a minor league contract and invited him to spring training. |
| Dec 14, 2013 | Signed as free agent | Brian Bocock | — | Kansas City Royals | Kansas City Royals signed free agent SS Brian Bocock to a minor league contract. |
| Dec 14, 2013 | Signed as free agent | Johermyn Chavez | — | Kansas City Royals | Kansas City Royals signed free agent RF Johermyn Chavez to a minor league contract. |
| Dec 14, 2013 | Signed as free agent | Cory Wade | — | Kansas City Royals | Kansas City Royals signed free agent Cory Wade. |
| Dec 14, 2013 | Signed as free agent | Bartolo Colon | — | New York Mets | New York Mets signed free agent RHP Bartolo Colon. |
| Dec 13, 2013 | Signed as free agent | Joba Chamberlain | — | Detroit Tigers | Detroit Tigers signed free agent RHP Joba Chamberlain. |
| Dec 13, 2013 | Signed as free agent | Travis Banwart | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Travis Banwart to a minor league contract and invited him to spring training. |
| Dec 13, 2013 | Signed as free agent | Matt Carson | — | Cleveland Guardians | Cleveland Indians signed free agent RF Matt Carson to a minor league contract and invited him to spring training. |
| Dec 13, 2013 | Signed as free agent | Tyler Cloyd | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Tyler Cloyd to a minor league contract and invited him to spring training. |
| Dec 13, 2013 | Signed as free agent | David Adams | — | Cleveland Guardians | Cleveland Indians signed free agent David Adams. |
| Dec 13, 2013 | Trade | Carter Capps | Seattle Mariners | Miami Marlins | Seattle Mariners traded RHP Carter Capps to Miami Marlins for RF Logan Morrison. |
| Dec 13, 2013 | Signed as free agent | Corey Hart | — | Seattle Mariners | Seattle Mariners signed free agent DH Corey Hart. |
| Dec 13, 2013 | Signed as free agent | Justin Morneau | — | Colorado Rockies | Colorado Rockies signed free agent 1B Justin Morneau. |
| Dec 13, 2013 | Trade | Brandon Jacobs | Chicago White Sox | Arizona Diamondbacks | Chicago White Sox traded LF Brandon Jacobs to Arizona Diamondbacks. |
| Dec 13, 2013 | Trade | A.J. Schugel | Los Angeles Angels | Arizona Diamondbacks | Los Angeles Angels traded RHP A.J. Schugel to Arizona Diamondbacks. |
| Dec 13, 2013 | Trade | Todd Glaesmann | Tampa Bay Rays | Arizona Diamondbacks | Tampa Bay Rays traded CF Todd Glaesmann to Arizona Diamondbacks. |
| Dec 13, 2013 | Signed as free agent | Clint Barmes | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent SS Clint Barmes. |
| Dec 13, 2013 | Signed as free agent | Edinson Volquez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Edinson Volquez. |
| Dec 13, 2013 | Signed as free agent | Josh Ravin | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Josh Ravin to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Josh Bell | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 3B Josh Bell to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Henry Sosa | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Henry Sosa to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Fu-Te Ni | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Fu-Te Ni to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Jack McGeary | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Jack McGeary to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Andy Marte | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 3B Andy Marte to a minor league contract and invited him to spring training. |
| Dec 13, 2013 | Signed as free agent | Henry Blanco | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Henry Blanco to a minor league contract and invited him to spring training. |
| Dec 13, 2013 | Signed as free agent | Juan Abreu | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Juan Abreu to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Bradley Blanks | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Bradley Blanks to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Daniel Hudson | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Daniel Hudson to a minor league contract and invited him to spring training. |
| Dec 13, 2013 | Signed as free agent | Drew Carpenter | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Drew Carpenter to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Sam Demel | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Sam Demel to a minor league contract and invited him to spring training. |
| Dec 13, 2013 | Signed as free agent | Josh Judy | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Josh Judy to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Romulo Sanchez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Romulo Sanchez to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Jack McGeary | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent Jack McGeary. |
| Dec 13, 2013 | Signed as free agent | Taylor Harbin | — | Miami Marlins | Miami Marlins signed free agent 2B Taylor Harbin to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Jason Kubel | — | Minnesota Twins | Minnesota Twins signed free agent LF Jason Kubel to a minor league contract and invited him to spring training. |
| Dec 13, 2013 | Signed as free agent | Adam Reifer | — | San Francisco Giants | San Francisco Giants signed free agent RHP Adam Reifer to a minor league contract and invited him to spring training. |
| Dec 13, 2013 | Signed as free agent | Mario Lisson | — | San Francisco Giants | San Francisco Giants signed free agent 3B Mario Lisson to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Matt Palmer | — | Seattle Mariners | Seattle Mariners signed free agent RHP Matt Palmer to a minor league contract and invited him to spring training. |
| Dec 13, 2013 | Signed as free agent | Jesus Torres | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Jesus Torres to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Doug Mathis | — | Texas Rangers | Texas Rangers signed free agent RHP Doug Mathis to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Brock Peterson | — | Washington Nationals | Washington Nationals signed free agent Brock Peterson. |
| Dec 13, 2013 | Signed as free agent | Hendrik Clementina | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Hendrik Clementina to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Yoslan Herrera | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Yoslan Herrera to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Kyler Burke | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Kyler Burke to a minor league contract. |
| Dec 13, 2013 | Signed as free agent | Anderson Tejeda | — | Chicago White Sox | Chicago White Sox signed free agent OF Anderson Tejeda to a minor league contract. |
| Dec 12, 2013 | Trade | Brian Moran | Toronto Blue Jays | Los Angeles Angels | Toronto Blue Jays traded LHP Brian Moran to Los Angeles Angels. |
| Dec 12, 2013 | Trade | Justin Ruggiano | Miami Marlins | Chicago Cubs | Chicago Cubs traded LF Brian Bogusevic to Miami Marlins for RF Justin Ruggiano. |
| Dec 12, 2013 | Trade | Patrick Schuster | Houston Astros | San Diego Padres | Houston Astros traded LHP Patrick Schuster to San Diego Padres. |
| Dec 12, 2013 | Signed as free agent | Robinson Canó | — | Seattle Mariners | Seattle Mariners signed free agent 2B Robinson Cano. |
| Dec 12, 2013 | Signed as free agent | Kevin Kouzmanoff | — | Texas Rangers | Texas Rangers signed free agent 3B Kevin Kouzmanoff to a minor league contract and invited him to spring training. |
| Dec 12, 2013 | Signed as free agent | Brent Lillibridge | — | Texas Rangers | Texas Rangers signed free agent 3B Brent Lillibridge to a minor league contract and invited him to spring training. |
| Dec 12, 2013 | Signed as free agent | Armando Rodriguez | — | Texas Rangers | Texas Rangers signed free agent RHP Armando Rodriguez to a minor league contract and invited him to spring training. |
| Dec 12, 2013 | Signed as free agent | Josh Wilson | — | Texas Rangers | Texas Rangers signed free agent SS Josh Wilson to a minor league contract and invited him to spring training. |
| Dec 12, 2013 | Signed as free agent | Nate McLouth | — | Washington Nationals | Washington Nationals signed free agent LF Nate McLouth. |
| Dec 12, 2013 | Trade | David Freitas | Athletics | Baltimore Orioles | Oakland Athletics traded C David Freitas to Baltimore Orioles. |
| Dec 12, 2013 | Signed as free agent | Mike Napoli | — | Boston Red Sox | Boston Red Sox signed free agent 1B Mike Napoli. |
| Dec 12, 2013 | Trade | Seth Rosin | New York Mets | Los Angeles Dodgers | New York Mets traded Seth Rosin to Los Angeles Dodgers for cash. |
| Dec 12, 2013 | Signed as free agent | Yohan Pino | — | Minnesota Twins | Minnesota Twins signed free agent RHP Yohan Pino to a minor league contract and invited him to spring training. |
| Dec 12, 2013 | Signed as free agent | Burt Reynolds | — | Seattle Mariners | Seattle Mariners signed free agent RF Burt Reynolds to a minor league contract and invited him to spring training. |
| Dec 12, 2013 | Signed as free agent | Ramon Moreno | — | Atlanta Braves | Atlanta Braves signed free agent RHP Ramon Moreno to a minor league contract. |
| Dec 12, 2013 | Signed as free agent | Ruben Perez | — | Atlanta Braves | Atlanta Braves signed free agent C Ruben Perez to a minor league contract. |
| Dec 12, 2013 | Signed as free agent | Gersel Pitre | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Gersel Pitre to a minor league contract. |
| Dec 11, 2013 | Trade | Kyle Haynes | Pittsburgh Pirates | New York Yankees | Pittsburgh Pirates traded RHP Kyle Haynes to New York Yankees. |
| Dec 11, 2013 | Trade | Jerry Blevins | Athletics | Washington Nationals | Oakland Athletics traded LHP Jerry Blevins to Washington Nationals for LF Billy Burns. |
| Dec 11, 2013 | Signed as free agent | Angel Castro | — | St. Louis Cardinals | St. Louis Cardinals signed free agent Angel Castro. |
| Dec 11, 2013 | Trade | Anthony Bass | San Diego Padres | Houston Astros | San Diego Padres traded RHP Anthony Bass and Player To Be Named Later to Houston Astros for Player To Be Named Later. |
| Dec 11, 2013 | Signed as free agent | Rajai Davis | — | Detroit Tigers | Detroit Tigers signed free agent CF Rajai Davis. |
| Dec 11, 2013 | Released | Thad Weber | — | Toronto Blue Jays | Toronto Blue Jays released RHP Thad Weber. |
| Dec 11, 2013 | Signed as free agent | Craig Albernaz | — | Detroit Tigers | Detroit Tigers signed free agent C Craig Albernaz to a minor league contract and invited him to spring training. |
| Dec 11, 2013 | Signed as free agent | Duane Below | — | Detroit Tigers | Detroit Tigers signed free agent LHP Duane Below to a minor league contract and invited him to spring training. |
| Dec 11, 2013 | Signed as free agent | Rainer Florez | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Rainer Florez to a minor league contract. |
| Dec 11, 2013 | Signed as free agent | Francisco Tena | — | Boston Red Sox | Boston Red Sox signed free agent LHP Francisco Tena to a minor league contract. |
| Dec 11, 2013 | Signed as free agent | Shair Lacrus | — | Boston Red Sox | Boston Red Sox signed free agent RHP Shair Lacrus to a minor league contract. |
| Dec 10, 2013 | Signed as free agent | J.P. Arencibia | — | Texas Rangers | Texas Rangers signed free agent J.P. Arencibia. |
| Dec 10, 2013 | Trade | Adam Eaton | Arizona Diamondbacks | Chicago White Sox | Arizona Diamondbacks traded CF Adam Eaton to Chicago White Sox for Hector Santiago and Player To Be Named Later. |
| Dec 10, 2013 | Trade | Tyler Skaggs | Arizona Diamondbacks | Los Angeles Angels | Los Angeles Angels traded LF Mark Trumbo and Player To Be Named Later to Arizona Diamondbacks for LHP Hector Santiago and LHP Tyler Skaggs. |
| Dec 10, 2013 | Trade | Drew Pomeranz | Colorado Rockies | Athletics | Oakland Athletics traded LHP Brett Anderson and cash to Colorado Rockies for LHP Drew Pomeranz and RHP Chris Jensen. |
| Dec 10, 2013 | Signed as free agent | Garrett Jones | — | Miami Marlins | Miami Marlins signed free agent 1B Garrett Jones. |
| Dec 10, 2013 | Signed as free agent | Ryan Webb | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Ryan Webb. |
| Dec 10, 2013 | Signed as free agent | Chris Marrero | — | Baltimore Orioles | Baltimore Orioles signed free agent 1B Chris Marrero to a minor league contract and invited him to spring training. |
| Dec 10, 2013 | Signed as free agent | Angel Molina | — | Los Angeles Angels | Los Angeles Angels signed free agent C Angel Molina to a minor league contract. |
| Dec 10, 2013 | Signed as free agent | C.J. Ziegler | — | Minnesota Twins | Minnesota Twins signed free agent 1B C.J. Ziegler to a minor league contract. |
| Dec 10, 2013 | Signed as free agent | Oliver Nunez | — | Kansas City Royals | Kansas City Royals signed free agent SS Oliver Nunez to a minor league contract. |
| Dec 10, 2013 | Signed as free agent | Starling Quinonez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Starling Quinonez to a minor league contract. |
| Dec 9, 2013 | Signed as free agent | Felipe Paulino | — | Chicago White Sox | Chicago White Sox signed free agent RHP Felipe Paulino. |
| Dec 9, 2013 | Signed as free agent | David Cooper | — | Cleveland Guardians | Cleveland Indians signed free agent 1B David Cooper. |
| Dec 9, 2013 | Released | Eric Thames | — | Houston Astros | Houston Astros released RF Eric Thames. |
| Dec 9, 2013 | Signed as free agent | Curtis Granderson | — | New York Mets | New York Mets signed free agent CF Curtis Granderson. |
| Dec 9, 2013 | Signed as free agent | Jefferson Vergara | — | Miami Marlins | Miami Marlins signed free agent RHP Jefferson Vergara to a minor league contract. |
| Dec 9, 2013 | Signed as free agent | Dariel Gomez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent 1B Dariel Gomez to a minor league contract. |
| Dec 9, 2013 | Signed as free agent | Oscar Cotes | — | St. Louis Cardinals | St. Louis Cardinals signed free agent SS Oscar Cotes to a minor league contract. |
| Dec 8, 2013 | Signed as free agent | Mark Hamilton | — | Atlanta Braves | Atlanta Braves signed free agent 1B Mark Hamilton to a minor league contract and invited him to spring training. |
| Dec 7, 2013 | Signed as free agent | Francisco Peguero | — | Baltimore Orioles | Baltimore Orioles signed free agent LF Francisco Peguero. |
| Dec 7, 2013 | Signed as free agent | Edward Mujica | — | Boston Red Sox | Boston Red Sox signed free agent RHP Edward Mujica. |
| Dec 7, 2013 | Signed as free agent | Brian Wilson | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Brian Wilson. |
| Dec 7, 2013 | Signed as free agent | Hiroki Kuroda | — | New York Yankees | New York Yankees signed free agent RHP Hiroki Kuroda. |
| Dec 7, 2013 | Signed as free agent | Chad Qualls | — | Houston Astros | Houston Astros signed free agent RHP Chad Qualls. |
| Dec 7, 2013 | Signed as free agent | Jacoby Ellsbury | — | New York Yankees | New York Yankees signed free agent CF Jacoby Ellsbury. |
| Dec 7, 2013 | Signed as free agent | Marcus Lemon | — | Detroit Tigers | Detroit Tigers signed free agent 2B Marcus Lemon to a minor league contract. |
| Dec 6, 2013 | Signed as free agent | Jarrod Saltalamacchia | — | Miami Marlins | Miami Marlins signed free agent C Jarrod Saltalamacchia. |
| Dec 6, 2013 | Signed as free agent | Scott Feldman | — | Houston Astros | Houston Astros signed free agent RHP Scott Feldman. |
| Dec 6, 2013 | Signed as free agent | Rafael Furcal | — | Miami Marlins | Miami Marlins signed free agent 2B Rafael Furcal. |
| Dec 6, 2013 | Signed as free agent | Kelly Johnson | — | New York Yankees | New York Yankees signed free agent 3B Kelly Johnson. |
| Dec 6, 2013 | Signed as free agent | Corky Miller | — | Cincinnati Reds | Cincinnati Reds signed free agent C Corky Miller to a minor league contract and invited him to spring training. |
| Dec 6, 2013 | Signed as free agent | Melvin Mezquita | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent SS Melvin Mezquita to a minor league contract. |
| Dec 6, 2013 | Signed as free agent | Melvin Morel | — | Washington Nationals | Washington Nationals signed free agent LHP Melvin Morel to a minor league contract. |
| Dec 5, 2013 | Trade | Norichika Aoki | Milwaukee Brewers | Kansas City Royals | Milwaukee Brewers traded RF Nori Aoki to Kansas City Royals for LHP Will Smith. |
| Dec 5, 2013 | Signed as free agent | Willie Bloomquist | — | Seattle Mariners | Seattle Mariners signed free agent SS Willie Bloomquist. |
| Dec 5, 2013 | Signed as free agent | Wil Nieves | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Wil Nieves. |
| Dec 5, 2013 | Signed as free agent | Phil Hughes | — | Minnesota Twins | Minnesota Twins signed free agent RHP Phil Hughes. |
| Dec 5, 2013 | Signed as free agent | Nate Adcock | — | Texas Rangers | Texas Rangers signed free agent RHP Nate Adcock to a minor league contract and invited him to spring training. |
| Dec 5, 2013 | Signed as free agent | Jose Contreras | — | Texas Rangers | Texas Rangers signed free agent RHP Jose Contreras to a minor league contract and invited him to spring training. |
| Dec 5, 2013 | Signed as free agent | Bryan Petersen | — | Texas Rangers | Texas Rangers signed free agent LF Bryan Petersen to a minor league contract and invited him to spring training. |
| Dec 5, 2013 | Signed as free agent | Juan Carlos Oviedo | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Juan Carlos Oviedo. |
| Dec 5, 2013 | Signed as free agent | Cole Gillespie | — | Seattle Mariners | Seattle Mariners signed free agent LF Cole Gillespie to a minor league contract and invited him to spring training. |
| Dec 5, 2013 | Signed as free agent | Dayan Díaz | — | Boston Red Sox | Boston Red Sox signed free agent RHP Dayan Diaz to a minor league contract. |
| Dec 4, 2013 | Signed as free agent | Paul Konerko | — | Chicago White Sox | Chicago White Sox signed free agent 1B Paul Konerko. |
| Dec 4, 2013 | Signed as free agent | Scott Kazmir | — | Athletics | Oakland Athletics signed free agent LHP Scott Kazmir. |
| Dec 4, 2013 | Signed as free agent | A.J. Pierzynski | — | Boston Red Sox | Boston Red Sox signed free agent C A.J. Pierzynski. |
| Dec 4, 2013 | Signed as free agent | Joe Nathan | — | Detroit Tigers | Detroit Tigers signed free agent RHP Joe Nathan. |
| Dec 4, 2013 | Signed as free agent | Irving Falu | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 2B Irving Falu to a minor league contract and invited him to spring training. |
| Dec 4, 2013 | Signed as free agent | Ryan Vogelsong | — | San Francisco Giants | San Francisco Giants signed free agent RHP Ryan Vogelsong. |
| Dec 4, 2013 | Signed as free agent | Peter Moylan | — | Houston Astros | Houston Astros signed free agent RHP Peter Moylan to a minor league contract and invited him to spring training. |
| Dec 4, 2013 | Signed as free agent | Eddy Gonzalez | — | Miami Marlins | Miami Marlins signed free agent RHP Eddy Gonzalez to a minor league contract. |
| Dec 4, 2013 | Signed as free agent | Brian Gordon | — | New York Yankees | New York Yankees signed free agent RHP Brian Gordon to a minor league contract and invited him to spring training. |
| Dec 4, 2013 | Signed as free agent | Carlos Rivero | — | Boston Red Sox | Boston Red Sox signed free agent 3B Carlos Rivero to a minor league contract. |
| Dec 4, 2013 | Signed as free agent | Angher Cespedes | — | Washington Nationals | Washington Nationals signed free agent RHP Angher Cespedes to a minor league contract. |
| Dec 4, 2013 | Signed as free agent | Franklin Arias | — | Detroit Tigers | Detroit Tigers signed free agent OF Franklin Arias to a minor league contract. |
| Dec 4, 2013 | Signed as free agent | Luis Torrealba | — | Detroit Tigers | Detroit Tigers signed free agent 2B Luis Torrealba to a minor league contract. |
| Dec 3, 2013 | Trade | Jim Johnson | Baltimore Orioles | Athletics | Baltimore Orioles traded RHP Jim Johnson to Oakland Athletics for Player To Be Named Later and 2B Jemile Weeks. |
| Dec 3, 2013 | Signed as free agent | Brian McCann | — | New York Yankees | New York Yankees signed free agent C Brian McCann. |
| Dec 3, 2013 | Trade | Christopher Bostick | Athletics | Texas Rangers | Texas Rangers traded CF Craig Gentry and RHP Josh Lindblom to Oakland Athletics for LF Michael Choice and 2B Christopher Bostick. |
| Dec 3, 2013 | Signed as free agent | Ricky Nolasco | — | Minnesota Twins | Minnesota Twins signed free agent RHP Ricky Nolasco. |
| Dec 3, 2013 | Trade | Ryan Hanigan | Cincinnati Reds | Tampa Bay Rays | Cincinnati Reds traded C Ryan Hanigan to Tampa Bay Rays. |
| Dec 3, 2013 | Trade | Heath Bell | Arizona Diamondbacks | Tampa Bay Rays | Arizona Diamondbacks traded RHP Heath Bell and cash to Tampa Bay Rays for RHP Justin Choate and Player To Be Named Later. |
| Dec 3, 2013 | Trade | David Holmberg | Arizona Diamondbacks | Cincinnati Reds | Arizona Diamondbacks traded LHP David Holmberg to Cincinnati Reds. |
| Dec 3, 2013 | Trade | Seth Smith | Athletics | San Diego Padres | Oakland Athletics traded LF Seth Smith to San Diego Padres for RHP Luke Gregerson. |
| Dec 3, 2013 | Trade | Dexter Fowler | Colorado Rockies | Houston Astros | Colorado Rockies traded Player To Be Named Later and CF Dexter Fowler to Houston Astros for RF Brandon Barnes and RHP Jordan Lyles. |
| Dec 3, 2013 | Trade | Erik Kratz | Philadelphia Phillies | Toronto Blue Jays | Toronto Blue Jays traded RHP Brad Lincoln to Philadelphia Phillies for C Erik Kratz and LHP Rob Rasmussen. |
| Dec 3, 2013 | Signed as free agent | Matt Pagnozzi | — | Milwaukee Brewers | Milwaukee Brewers signed free agent C Matt Pagnozzi to a minor league contract and invited him to spring training. |
| Dec 3, 2013 | Signed as free agent | Matt Angle | — | Miami Marlins | Miami Marlins signed free agent CF Matt Angle to a minor league contract and invited him to spring training. |
| Dec 3, 2013 | Signed as free agent | Tyler LaTorre | — | San Francisco Giants | San Francisco Giants signed free agent C Tyler LaTorre to a minor league contract. |
| Dec 3, 2013 | Signed as free agent | Alberto Gonzalez | — | San Diego Padres | San Diego Padres signed free agent SS Alberto Gonzalez to a minor league contract and invited him to spring training. |
| Dec 3, 2013 | Signed as free agent | Derek Hankins | — | Detroit Tigers | Detroit Tigers signed free agent RHP Derek Hankins to a minor league contract. |
| Dec 3, 2013 | Signed as free agent | Miguel Angel Bonilla | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Miguel Angel Bonilla to a minor league contract. |
| Dec 2, 2013 | Trade | Chris Stewart | New York Yankees | Pittsburgh Pirates | New York Yankees traded C Chris Stewart to Pittsburgh Pirates for Player To Be Named Later. |
| Dec 2, 2013 | Signed as free agent | Brendan Ryan | — | New York Yankees | New York Yankees signed free agent SS Brendan Ryan. |
| Dec 2, 2013 | Signed as free agent | Dioner Navarro | — | Toronto Blue Jays | Toronto Blue Jays signed free agent C Dioner Navarro. |
| Dec 2, 2013 | Trade | Doug Fister | Detroit Tigers | Washington Nationals | Detroit Tigers traded RHP Doug Fister to Washington Nationals for LHP Ian Krol, 2B Steve Lombardozzi and LHP Robbie Ray. |
| Dec 2, 2013 | Signed as free agent | José Molina | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Jose Molina. |
| Dec 2, 2013 | Signed as free agent | Jeff Manship | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Jeff Manship to a minor league contract and invited him to spring training. |
| Dec 2, 2013 | Signed as free agent | Argenis Diaz | — | Cincinnati Reds | Cincinnati Reds signed free agent SS Argenis Diaz to a minor league contract and invited him to spring training. |
| Dec 2, 2013 | Signed as free agent | Matt Hoffman | — | Minnesota Twins | Minnesota Twins signed free agent LHP Matt Hoffman to a minor league contract and invited him to spring training. |
| Dec 2, 2013 | Signed as free agent | Brandon Waring | — | Minnesota Twins | Minnesota Twins signed free agent 3B Brandon Waring to a minor league contract and invited him to spring training. |
| Dec 2, 2013 | Signed as free agent | Gabe Suarez | — | San Diego Padres | San Diego Padres signed free agent 2B Gabe Suarez to a minor league contract. |
| Dec 2, 2013 | Signed as free agent | Manny Delcarmen | — | Washington Nationals | Washington Nationals signed free agent RHP Manny Delcarmen to a minor league contract and invited him to spring training. |
| Dec 2, 2013 | Signed as free agent | Shakir Albert | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Shakir Albert to a minor league contract. |
| Dec 2, 2013 | Signed as free agent | Ezequiel Carrera | — | Detroit Tigers | Detroit Tigers signed free agent RF Ezequiel Carrera to a minor league contract and invited him to spring training. |
| Dec 2, 2013 | Signed as free agent | Brian Jeroloman | — | Washington Nationals | Washington Nationals signed free agent C Brian Jeroloman to a minor league contract and invited him to spring training. |
| Dec 1, 2013 | Signed as free agent | Nelvin Fuentes | — | Chicago White Sox | Chicago White Sox signed free agent LHP Nelvin Fuentes to a minor league contract. |
| Nov 30, 2013 | Trade | Johnny Monell | San Francisco Giants | Baltimore Orioles | San Francisco Giants traded C Johnny Monell to Baltimore Orioles for cash. |
| Nov 30, 2013 | Signed as free agent | Gustavo Nunez | — | Atlanta Braves | Atlanta Braves signed free agent SS Gustavo Nunez to a minor league contract. |
| Nov 29, 2013 | Signed as free agent | Jason Lane | — | San Diego Padres | San Diego Padres signed free agent LHP Jason Lane to a minor league contract. |
| Nov 29, 2013 | Signed as free agent | Emmanuel Nere | — | Miami Marlins | Miami Marlins signed free agent OF Emmanuel Nere to a minor league contract. |
| Nov 29, 2013 | Signed as free agent | Oscar Tejeda | — | Washington Nationals | Washington Nationals signed free agent 2B Oscar Tejeda to a minor league contract. |
| Nov 29, 2013 | Signed as free agent | Manny Parra | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Manny Parra. |
| Nov 29, 2013 | Signed as free agent | Santiago Rodriguez | — | Chicago Cubs | Chicago Cubs signed free agent RHP Santiago Rodriguez to a minor league contract. |
| Nov 29, 2013 | Signed as free agent | Deibi Torres | — | Chicago Cubs | Chicago Cubs signed free agent RHP Deibi Torres to a minor league contract. |
| Nov 29, 2013 | Signed as free agent | Domingo Jimenez | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Domingo Jimenez to a minor league contract. |
| Nov 29, 2013 | Signed as free agent | J.C. Mejía | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Jean Carlos Mejia to a minor league contract. |
| Nov 29, 2013 | Signed as free agent | Efrin Ortega | — | Cleveland Guardians | Cleveland Indians signed free agent SS Efrin Ortega to a minor league contract. |
| Nov 29, 2013 | Signed as free agent | Gabriel Vizcaino | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Gabriel Vizcaino to a minor league contract. |
| Nov 29, 2013 | Signed as free agent | Huascar Fuentes | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Huascar Fuentes to a minor league contract. |
| Nov 29, 2013 | Signed as free agent | Felix Vinicio | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Felix Vinicio to a minor league contract. |
| Nov 28, 2013 | Signed as free agent | Dustin Martin | — | Atlanta Braves | Atlanta Braves signed free agent RF Dustin Martin to a minor league contract. |
| Nov 28, 2013 | Signed as free agent | Luis Ubiera | — | Chicago Cubs | Chicago Cubs signed free agent OF Luis Ubiera to a minor league contract. |
| Nov 28, 2013 | Signed as free agent | Cesar Ventura | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Cesar Ventura to a minor league contract. |
| Nov 27, 2013 | Signed as free agent | Joe Smith | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Joe Smith. |
| Nov 27, 2013 | Signed as free agent | Erik Cordier | — | San Francisco Giants | San Francisco Giants signed free agent Erik Cordier. |
| Nov 27, 2013 | Signed as free agent | Carlos Luis | — | St. Louis Cardinals | St. Louis Cardinals signed free agent OF Carlos Luis to a minor league contract. |
| Nov 27, 2013 | Signed as free agent | Yonelvy Pichardo | — | Texas Rangers | Texas Rangers signed free agent LHP Yonelvy Pichardo to a minor league contract. |
| Nov 27, 2013 | Signed as free agent | Juan Perez | — | Boston Red Sox | Boston Red Sox signed free agent LHP Juan Perez to a minor league contract. |
| Nov 27, 2013 | Signed as free agent | Zach Putnam | — | Chicago White Sox | Chicago White Sox signed free agent RHP Zach Putnam to a minor league contract and invited him to spring training. |
| Nov 27, 2013 | Signed as free agent | Luis Hidalgo | — | Chicago Cubs | Chicago Cubs signed free agent C Luis Hidalgo to a minor league contract. |
| Nov 27, 2013 | Signed as free agent | Yolberth Gideon | — | Chicago White Sox | Chicago White Sox signed free agent 2B Yolberth Gideon to a minor league contract. |
| Nov 26, 2013 | Signed as free agent | Nevin Ashley | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Nevin Ashley to a minor league contract and invited him to spring training. |
| Nov 26, 2013 | Signed as free agent | Cody Eppley | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Cody Eppley to a minor league contract and invited him to spring training. |
| Nov 26, 2013 | Signed as free agent | Chris Young | — | New York Mets | New York Mets signed free agent CF Chris Young. |
| Nov 26, 2013 | Trade | George Kottaras | Kansas City Royals | Chicago Cubs | Kansas City Royals traded C George Kottaras to Chicago Cubs for cash. |
| Nov 26, 2013 | Signed as free agent | Skip Schumaker | — | Cincinnati Reds | Cincinnati Reds signed free agent 2B Skip Schumaker. |
| Nov 26, 2013 | Signed as free agent | Javier López | — | San Francisco Giants | San Francisco Giants signed free agent LHP Javier Lopez. |
| Nov 26, 2013 | Signed as free agent | Matt Kennelly | — | Atlanta Braves | Atlanta Braves signed free agent C Matt Kennelly to a minor league contract. |
| Nov 26, 2013 | Signed as free agent | Carlos Hernandez | — | Colorado Rockies | Colorado Rockies signed free agent LHP Carlos Hernandez to a minor league contract. |
| Nov 26, 2013 | Signed as free agent | Kelvin Perez | — | Washington Nationals | Washington Nationals signed free agent RHP Kelvin Perez to a minor league contract. |
| Nov 26, 2013 | Signed as free agent | Melvin Novoa | — | Texas Rangers | Texas Rangers signed free agent C Melvin Novoa to a minor league contract. |
| Nov 26, 2013 | Signed as free agent | Jose Contreras | — | Texas Rangers | Texas Rangers signed free agent SS Jose Contreras to a minor league contract. |
| Nov 26, 2013 | Signed as free agent | Adron Chambers | — | Houston Astros | Houston Astros signed free agent LF Adron Chambers to a minor league contract and invited him to spring training. |
| Nov 26, 2013 | Signed as free agent | John Ely | — | Boston Red Sox | Boston Red Sox signed free agent RHP John Ely to a minor league contract and invited him to spring training. |
| Nov 26, 2013 | Signed as free agent | Jean Carrillo | — | Baltimore Orioles | Baltimore Orioles signed free agent C Jean Carrillo to a minor league contract. |
| Nov 25, 2013 | Signed as free agent | David Murphy | — | Cleveland Guardians | Cleveland Indians signed free agent RF David Murphy. |
| Nov 25, 2013 | Trade | Brad Brach | San Diego Padres | Baltimore Orioles | San Diego Padres traded RHP Brad Brach to Baltimore Orioles for RHP Devin Jones. |
| Nov 25, 2013 | Trade | Alex Dickerson | Pittsburgh Pirates | San Diego Padres | San Diego Padres traded LF Jaff Decker and RHP Miles Mikolas to Pittsburgh Pirates for RF Alex Dickerson. |
| Nov 25, 2013 | Trade | Fernando Abad | Washington Nationals | Athletics | Beloit Snappers Traded 1B John Wooten to Hagerstown Suns and Washington Nationals Traded LHP Fernando Abad to Oakland Athletics. |
| Nov 25, 2013 | Signed as free agent | Dan Haren | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Dan Haren. |
| Nov 25, 2013 | Released | Irving Falu | — | Kansas City Royals | Kansas City Royals released 3B Irving Falu. |
| Nov 25, 2013 | Signed as free agent | Mike Hessman | — | Detroit Tigers | Detroit Tigers signed free agent 1B Mike Hessman to a minor league contract. |
| Nov 25, 2013 | Signed as free agent | Miguel Socolovich | — | New York Mets | New York Mets signed free agent RHP Miguel Socolovich to a minor league contract and invited him to spring training. |
| Nov 25, 2013 | Signed as free agent | Ralph Henriquez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Ralph Henriquez to a minor league contract. |
| Nov 25, 2013 | Signed as free agent | Hector Gimenez | — | Chicago White Sox | Chicago White Sox signed free agent C Hector Gimenez to a minor league contract and invited him to spring training. |
| Nov 25, 2013 | Signed as free agent | Yohan Flande | — | Colorado Rockies | Colorado Rockies signed free agent LHP Yohan Flande to a minor league contract and invited him to spring training. |
| Nov 25, 2013 | Signed as free agent | Roldani Baldwin | — | Boston Red Sox | Boston Red Sox signed free agent C Roldani Baldwin to a minor league contract. |
| Nov 25, 2013 | Signed as free agent | Andres Tejada | — | Detroit Tigers | Detroit Tigers signed free agent RHP Andres Tejada to a minor league contract. |
| Nov 25, 2013 | Signed as free agent | Deyvi Castillo | — | Los Angeles Angels | Los Angeles Angels signed free agent CF Deyvi Castillo to a minor league contract. |
| Nov 24, 2013 | Signed as free agent | Jhonny Peralta | — | St. Louis Cardinals | St. Louis Cardinals signed free agent SS Jhonny Peralta. |
| Nov 24, 2013 | Signed as free agent | Adam Russell | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Adam Russell to a minor league contract and invited him to spring training. |
| Nov 24, 2013 | Signed as free agent | Bobby Wilson | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Bobby Wilson to a minor league contract and invited him to spring training. |
| Nov 24, 2013 | Signed as free agent | Mauricio Robles | — | Chicago White Sox | Chicago White Sox signed free agent LHP Mauricio Robles to a minor league contract and invited him to spring training. |
| Nov 23, 2013 | Signed as free agent | Brandon Laird | — | Kansas City Royals | Kansas City Royals signed free agent 3B Brandon Laird to a minor league contract and invited him to spring training. |
| Nov 23, 2013 | Signed as free agent | Russ Canzler | — | New York Yankees | New York Yankees signed free agent 3B Russ Canzler to a minor league contract and invited him to spring training. |
| Nov 23, 2013 | Signed as free agent | Ryan Kulik | — | Colorado Rockies | Colorado Rockies signed free agent LHP Ryan Kulik to a minor league contract. |
| Nov 22, 2013 | Signed as free agent | Mike Zagurski | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Mike Zagurski to a minor league contract and invited him to spring training. |
| Nov 22, 2013 | Signed as free agent | LaTroy Hawkins | — | Colorado Rockies | Colorado Rockies signed free agent RHP LaTroy Hawkins. |
| Nov 22, 2013 | Trade | Luis Ortega | Boston Red Sox | Milwaukee Brewers | Milwaukee Brewers traded RHP Burke Badenhop to Boston Red Sox for LHP Luis Ortega. |
| Nov 22, 2013 | Trade | Fernando Salas | St. Louis Cardinals | Los Angeles Angels | St. Louis Cardinals traded 3B David Freese and RHP Fernando Salas to Los Angeles Angels for CF Peter Bourjos and RF Randal Grichuk. |
| Nov 22, 2013 | Signed as free agent | Jess Todd | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jess Todd to a minor league contract and invited him to spring training. |
| Nov 22, 2013 | Signed as free agent | Ryan Kelly | — | Atlanta Braves | Atlanta Braves signed free agent RHP Ryan Kelly to a minor league contract. |
| Nov 22, 2013 | Signed as free agent | Derrick Mitchell | — | Atlanta Braves | Atlanta Braves signed free agent LF Derrick Mitchell to a minor league contract. |
| Nov 22, 2013 | Signed as free agent | Darnell McDonald | — | Chicago Cubs | Chicago Cubs signed free agent LF Darnell McDonald to a minor league contract and invited him to spring training. |
| Nov 22, 2013 | Signed as free agent | Denis Phipps | — | Chicago White Sox | Chicago White Sox signed free agent RF Denis Phipps to a minor league contract and invited him to spring training. |
| Nov 22, 2013 | Signed as free agent | Marek Minarik | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Marek Minarik to a minor league contract. |
| Nov 22, 2013 | Signed as free agent | Stephen Shackleford | — | Seattle Mariners | Seattle Mariners signed free agent RHP Stephen Shackleford to a minor league contract. |
| Nov 22, 2013 | Signed as free agent | Luis Nunez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Luis Nunez to a minor league contract. |
| Nov 21, 2013 | Signed as free agent | Jason Vargas | — | Kansas City Royals | Kansas City Royals signed free agent LHP Jason Vargas. |
| Nov 21, 2013 | Signed as free agent | Carlos Ruiz | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Carlos Ruiz. |
| Nov 21, 2013 | Signed as free agent | Wilking Rodríguez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Wilking Rodriguez to a minor league contract. |
| Nov 21, 2013 | Signed as free agent | Nick Schmidt | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Nick Schmidt to a minor league contract. |
| Nov 21, 2013 | Signed as free agent | Jeremy McBryde | — | Athletics | Oakland Athletics signed free agent RHP Jeremy McBryde to a minor league contract and invited him to spring training. |
| Nov 21, 2013 | Signed as free agent | Ali Solis | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Roman Ali Solis to a minor league contract and invited him to spring training. |
| Nov 21, 2013 | Signed as free agent | Daniel Stange | — | Washington Nationals | Washington Nationals signed free agent RHP Daniel Stange to a minor league contract and invited him to spring training. |
| Nov 21, 2013 | Signed as free agent | Jorge Vega-Rosado | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 2B Jorge Vega-Rosado to a minor league contract. |
| Nov 21, 2013 | Signed as free agent | Jeyner Baez | — | Washington Nationals | Washington Nationals signed free agent C Jeyner Baez to a minor league contract. |
| Nov 21, 2013 | Signed as free agent | Jairo Asencio | — | Chicago White Sox | Chicago White Sox signed free agent RHP Jairo Asencio to a minor league contract. |
| Nov 21, 2013 | Signed as free agent | Patrick McCoy | — | Detroit Tigers | Detroit Tigers signed free agent LHP Pat McCoy to a minor league contract. |
| Nov 21, 2013 | Signed as free agent | Eduardo Sanchez | — | Detroit Tigers | Detroit Tigers signed free agent RHP Eduardo Sanchez to a minor league contract and invited him to spring training. |
| Nov 21, 2013 | Signed as free agent | Jon Velasquez | — | Minnesota Twins | Minnesota Twins signed free agent RHP Jon Velasquez to a minor league contract. |
| Nov 21, 2013 | Signed as free agent | Brandon Snyder | — | Boston Red Sox | Boston Red Sox signed free agent 3B Brandon Snyder to a minor league contract and invited him to spring training. |
| Nov 21, 2013 | Signed as free agent | Erick Balbuena | — | Minnesota Twins | Minnesota Twins signed free agent RHP Erick Balbuena to a minor league contract. |
| Nov 21, 2013 | Signed as free agent | Lewin Díaz | — | Minnesota Twins | Minnesota Twins signed free agent OF Lewin Diaz to a minor league contract. |
| Nov 21, 2013 | Signed as free agent | Luis Arraez | — | Minnesota Twins | Minnesota Twins signed free agent 2B Luis Arraez to a minor league contract. |
| Nov 21, 2013 | Signed as free agent | Jose Medina | — | Cleveland Guardians | Cleveland Indians signed free agent OF Jose Medina to a minor league contract. |
| Nov 21, 2013 | Signed as free agent | Yosmar Mujica | — | Cleveland Guardians | Cleveland Indians signed free agent OF Yosmar Mujica to a minor league contract. |
| Nov 20, 2013 | Signed as free agent | Jake Brigham | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Jake Brigham to a minor league contract and invited him to spring training. |
| Nov 20, 2013 | Signed as free agent | Jay Jackson | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Jay Jackson to a minor league contract and invited him to spring training. |
| Nov 20, 2013 | Signed as free agent | Josh Kinney | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Josh Kinney to a minor league contract and invited him to spring training. |
| Nov 20, 2013 | Signed as free agent | Seth McClung | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Seth McClung to a minor league contract. |
| Nov 20, 2013 | Signed as free agent | Collin Balester | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Collin Balester to a minor league contract. |
| Nov 20, 2013 | Signed as free agent | Josh Johnson | — | San Diego Padres | San Diego Padres signed free agent RHP Josh Johnson. |
| Nov 20, 2013 | Signed as free agent | Edgmer Escalona | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Edgmer Escalona. |
| Nov 20, 2013 | Signed as free agent | Deolis Guerra | — | Minnesota Twins | Minnesota Twins signed free agent RHP Deolis Guerra to a minor league contract and invited him to spring training. |
| Nov 20, 2013 | Trade | Dean Anna | San Diego Padres | New York Yankees | San Diego Padres traded 2B Dean Anna to New York Yankees for RHP Ben Paullus. |
| Nov 20, 2013 | Signed as free agent | Sam Runion | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Sam Runion to a minor league contract and invited him to spring training. |
| Nov 20, 2013 | Trade | Ian Kinsler | Texas Rangers | Detroit Tigers | Texas Rangers traded 2B Ian Kinsler to Detroit Tigers for cash and 1B Prince Fielder. |
| Nov 20, 2013 | Signed as free agent | Casper Wells | — | Chicago Cubs | Chicago Cubs signed free agent LF Casper Wells to a minor league contract and invited him to spring training. |
| Nov 20, 2013 | Signed as free agent | Jeffry Antigua | — | Chicago Cubs | Chicago Cubs signed free agent LHP Jeffry Antigua to a minor league contract. |
| Nov 20, 2013 | Signed as free agent | Ronald Bermudez | — | Baltimore Orioles | Baltimore Orioles signed free agent CF Ronald Bermudez to a minor league contract. |
| Nov 20, 2013 | Signed as free agent | Andrés Blanco | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Andres Blanco to a minor league contract and invited him to spring training. |
| Nov 20, 2013 | Signed as free agent | Reid Brignac | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Reid Brignac to a minor league contract and invited him to spring training. |
| Nov 20, 2013 | Signed as free agent | Matt Buschmann | — | Athletics | Oakland Athletics signed free agent RHP Matt Buschmann to a minor league contract and invited him to spring training. |
| Nov 20, 2013 | Signed as free agent | Brandon Hicks | — | San Francisco Giants | San Francisco Giants signed free agent SS Brandon Hicks to a minor league contract and invited him to spring training. |
| Nov 20, 2013 | Signed as free agent | Luis Martinez | — | Los Angeles Angels | Los Angeles Angels signed free agent C Luis Martinez to a minor league contract and invited him to spring training. |
| Nov 20, 2013 | Signed as free agent | Sharlon Schoop | — | Baltimore Orioles | Baltimore Orioles signed free agent SS Sharlon Schoop to a minor league contract. |
| Nov 20, 2013 | Signed as free agent | Cody King | — | Kansas City Royals | Kansas City Royals signed free agent 3B Cody King to a minor league contract. |
| Nov 20, 2013 | Signed as free agent | Eris Peguero | — | New York Mets | New York Mets signed free agent CF Eris Peguero to a minor league contract. |
| Nov 20, 2013 | Signed as free agent | Ernesto Liberatore | — | Cincinnati Reds | Cincinnati Reds signed free agent C Ernesto Liberatore to a minor league contract. |
| Nov 20, 2013 | Signed as free agent | Felix Viloria | — | Detroit Tigers | Detroit Tigers signed free agent LHP Felix Viloria to a minor league contract. |
| Nov 19, 2013 | Released | John Ely | — | Houston Astros | Houston Astros released RHP John Ely. |
| Nov 19, 2013 | Signed as free agent | Chris Rahl | — | Minnesota Twins | Minnesota Twins signed free agent LF Chris Rahl to a minor league contract and invited him to spring training. |
| Nov 19, 2013 | Signed as free agent | Mark Lowe | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Mark Lowe to a minor league contract and invited him to spring training. |
| Nov 19, 2013 | Signed as free agent | Chris Valaika | — | Chicago Cubs | Chicago Cubs signed free agent 2B Chris Valaika to a minor league contract and invited him to spring training. |
| Nov 19, 2013 | Signed as free agent | Carlos Pimentel | — | Chicago Cubs | Chicago Cubs signed free agent RHP Carlos Pimentel to a minor league contract and invited him to spring training. |
| Nov 19, 2013 | Signed as free agent | Edinson Rincon | — | Kansas City Royals | Kansas City Royals signed free agent LF Edinson Rincon to a minor league contract. |
| Nov 19, 2013 | Signed as free agent | P.J. Walters | — | Kansas City Royals | Kansas City Royals signed free agent RHP P.J. Walters to a minor league contract and invited him to spring training. |
| Nov 19, 2013 | Signed as free agent | Brandon Allen | — | New York Mets | New York Mets signed free agent 1B Brandon Allen to a minor league contract and invited him to spring training. |
| Nov 19, 2013 | Signed as free agent | Jason Erickson | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Jason Erickson to a minor league contract. |
| Nov 19, 2013 | Signed as free agent | KD Kang | — | Baltimore Orioles | Baltimore Orioles signed free agent LF Kyeong Kang to a minor league contract. |
| Nov 19, 2013 | Signed as free agent | Yamaico Navarro | — | New York Yankees | New York Yankees signed free agent 3B Yamaico Navarro to a minor league contract. |
| Nov 19, 2013 | Signed as free agent | Miguel Perez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Miguel Perez to a minor league contract. |
| Nov 19, 2013 | Signed as free agent | Jamie Romak | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RF Jamie Romak to a minor league contract. |
| Nov 19, 2013 | Signed as free agent | Juan Sosa | — | Miami Marlins | Miami Marlins signed free agent RHP Juan Sosa to a minor league contract. |
| Nov 19, 2013 | Signed as free agent | Jose George | — | Atlanta Braves | Atlanta Braves signed free agent OF Jose George to a minor league contract. |
| Nov 19, 2013 | Signed as free agent | Michael Monster | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Michael Monster to a minor league contract. |
| Nov 19, 2013 | Signed as free agent | Ramon Beltre | — | Chicago White Sox | Chicago White Sox signed free agent SS Ramon Beltre to a minor league contract. |
| Nov 18, 2013 | Signed as free agent | Ed Easley | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C Ed Easley to a minor league contract and invited him to spring training. |
| Nov 18, 2013 | Signed as free agent | Kelvin De La Cruz | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Kelvin De La Cruz. |
| Nov 18, 2013 | Signed as free agent | Tim Hudson | — | San Francisco Giants | San Francisco Giants signed free agent RHP Tim Hudson. |
| Nov 18, 2013 | Trade | Kris Johnson | Pittsburgh Pirates | Minnesota Twins | Pittsburgh Pirates traded LHP Kris Johnson to Minnesota Twins for RHP Duke Welker. |
| Nov 18, 2013 | Signed as free agent | Brendan Harris | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent SS Brendan Harris to a minor league contract and invited him to spring training. |
| Nov 18, 2013 | Signed as free agent | Daniel Moskos | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Daniel Moskos to a minor league contract and invited him to spring training. |
| Nov 18, 2013 | Signed as free agent | Clint Robinson | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 1B Clint Robinson to a minor league contract and invited him to spring training. |
| Nov 18, 2013 | Signed as free agent | Alex Liddi | — | Chicago White Sox | Chicago White Sox signed free agent 1B Alex Liddi to a minor league contract and invited him to spring training. |
| Nov 18, 2013 | Signed as free agent | Jhan Mariñez | — | Detroit Tigers | Detroit Tigers signed free agent RHP Jhan Marinez to a minor league contract and invited him to spring training. |
| Nov 18, 2013 | Signed as free agent | Deryk Hooker | — | Athletics | Oakland Athletics signed free agent RHP Deryk Hooker to a minor league contract and invited him to spring training. |
| Nov 18, 2013 | Signed as free agent | Jesus Sanchez | — | Miami Marlins | Miami Marlins signed free agent RHP Jesus Sanchez to a minor league contract and invited him to spring training. |
| Nov 18, 2013 | Signed as free agent | Gorkys Hernández | — | Kansas City Royals | Kansas City Royals signed free agent Gorkys Hernandez. |
| Nov 18, 2013 | Signed as free agent | Greg Burke | — | Colorado Rockies | Colorado Rockies signed free agent RHP Greg Burke to a minor league contract and invited him to spring training. |
| Nov 18, 2013 | Signed as free agent | Anthony Carter | — | San Diego Padres | San Diego Padres signed free agent RHP Anthony Carter to a minor league contract and invited him to spring training. |
| Nov 18, 2013 | Signed as free agent | Paolo Espino | — | Chicago Cubs | Chicago Cubs signed free agent RHP Paolo Espino to a minor league contract. |
| Nov 18, 2013 | Signed as free agent | Brendan Harris | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent Brendan Harris. |
| Nov 18, 2013 | Signed as free agent | Jose Martinez | — | Athletics | Oakland Athletics signed free agent 2B Jose Martinez to a minor league contract and invited him to spring training. |
| Nov 18, 2013 | Signed as free agent | Fernando Nieve | — | Athletics | Oakland Athletics signed free agent RHP Fernando Nieve to a minor league contract and invited him to spring training. |
| Nov 18, 2013 | Signed as free agent | Alberto Rosario | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Alberto Rosario to a minor league contract. |
| Nov 18, 2013 | Signed as free agent | Jake Smolinski | — | Texas Rangers | Texas Rangers signed free agent LF Jake Smolinski to a minor league contract. |
| Nov 18, 2013 | Signed as free agent | José Yépez | — | Atlanta Braves | Atlanta Braves signed free agent C Jose Yepez to a minor league contract. |
| Nov 18, 2013 | Signed as free agent | Ross Ismail | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Ross Ismail to a minor league contract. |
| Nov 18, 2013 | Signed as free agent | Gabriel Alfaro | — | Washington Nationals | Washington Nationals signed free agent Gabriel Alfaro. |
| Nov 18, 2013 | Signed as free agent | Breiling Eusebio | — | Colorado Rockies | Colorado Rockies signed free agent LHP Breiling Eusebio to a minor league contract. |
| Nov 18, 2013 | Signed as free agent | Kelvin Franco | — | Colorado Rockies | Colorado Rockies signed free agent RHP Kelvin Franco to a minor league contract. |
| Nov 18, 2013 | Signed as free agent | Ramon Marcelino | — | Colorado Rockies | Colorado Rockies signed free agent OF Ramon Marcelino to a minor league contract. |
| Nov 18, 2013 | Signed as free agent | Yendrys Gonzalez | — | San Francisco Giants | San Francisco Giants signed free agent RF Yendrys Gonzalez to a minor league contract. |
| Nov 17, 2013 | Signed as free agent | Francisco Peña | — | Kansas City Royals | Kansas City Royals signed free agent Francisco Pena. |
| Nov 17, 2013 | Signed as free agent | Benino Pruneda | — | Atlanta Braves | Atlanta Braves signed free agent RHP Benino Pruneda to a minor league contract. |
| Nov 17, 2013 | Signed as free agent | Jackson Williams | — | Colorado Rockies | Colorado Rockies signed free agent C Jackson Williams to a minor league contract and invited him to spring training. |
| Nov 17, 2013 | Signed as free agent | Yonathan Trinidad | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Yonathan Trinidad to a minor league contract. |
| Nov 16, 2013 | Signed as free agent | Nick Additon | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Nick Additon to a minor league contract and invited him to spring training. |
| Nov 16, 2013 | Signed as free agent | Bobby Cassevah | — | Colorado Rockies | Colorado Rockies signed free agent RHP Bobby Cassevah to a minor league contract. |
| Nov 16, 2013 | Signed as free agent | Matt McBride | — | Colorado Rockies | Colorado Rockies signed free agent C Matt McBride to a minor league contract and invited him to spring training. |
| Nov 16, 2013 | Signed as free agent | Ryan Rowland-Smith | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Ryan Rowland-Smith to a minor league contract and invited him to spring training. |
| Nov 15, 2013 | Signed as free agent | Cesar Jimenez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Cesar Jimenez to a minor league contract and invited him to spring training. |
| Nov 15, 2013 | Signed as free agent | Dan Johnson | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 1B Dan Johnson to a minor league contract and invited him to spring training. |
| Nov 15, 2013 | Signed as free agent | Mayo Acosta | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Mayo Acosta to a minor league contract and invited him to spring training. |
| Nov 15, 2013 | Signed as free agent | Brooks Brown | — | Colorado Rockies | Colorado Rockies signed free agent RHP Brooks Brown to a minor league contract and invited him to spring training. |
| Nov 15, 2013 | Signed as free agent | Parker Frazier | — | Chicago White Sox | Chicago White Sox signed free agent RHP Parker Frazier to a minor league contract and invited him to spring training. |
| Nov 15, 2013 | Signed as free agent | Chih-Hsien Chiang | — | Baltimore Orioles | Baltimore Orioles signed free agent RF Chih-Hsien Chiang to a minor league contract. |
| Nov 15, 2013 | Signed as free agent | Kalian Sams | — | Texas Rangers | Texas Rangers signed free agent RF Kalian Sams to a minor league contract. |
| Nov 15, 2013 | Signed as free agent | Jeudy Valdez | — | Chicago Cubs | Chicago Cubs signed free agent 2B Jeudy Valdez to a minor league contract and invited him to spring training. |
| Nov 15, 2013 | Signed as free agent | Ronny Fermin | — | Miami Marlins | Miami Marlins signed free agent RHP Ronny Fermin to a minor league contract. |
| Nov 15, 2013 | Signed as free agent | Chris Heston | — | San Francisco Giants | San Francisco Giants signed free agent RHP Chris Heston to a minor league contract. |
| Nov 15, 2013 | Signed as free agent | Adriel Almonte | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Adriel Almonte to a minor league contract. |
| Nov 15, 2013 | Signed as free agent | Johan Diaz | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Johan Diaz to a minor league contract. |
| Nov 15, 2013 | Signed as free agent | Alex Peguero | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 1B Alex Peguero to a minor league contract. |
| Nov 15, 2013 | Signed as free agent | Angel Suero | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Angel Suero to a minor league contract. |
| Nov 14, 2013 | Released | Mauro Gomez | — | Washington Nationals | Washington Nationals released 1B Mauro Gomez. |
| Nov 14, 2013 | Signed as free agent | Brad Snyder | — | Texas Rangers | Texas Rangers signed free agent RF Brad Snyder to a minor league contract and invited him to spring training. |
| Nov 14, 2013 | Signed as free agent | Jose A. Flores | — | Athletics | Oakland Athletics signed free agent RHP Jose Flores to a minor league contract and invited him to spring training. |
| Nov 14, 2013 | Signed as free agent | Melvin Dorta | — | Washington Nationals | Washington Nationals signed free agent 2B Melvin Dorta to a minor league contract. |
| Nov 14, 2013 | Signed as free agent | Brady Feigl | — | Atlanta Braves | Atlanta Braves signed free agent LHP Brady Feigl to a minor league contract. |
| Nov 14, 2013 | Signed as free agent | Brock Huntzinger | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Brock Huntzinger to a minor league contract and invited him to spring training. |
| Nov 14, 2013 | Signed as free agent | Steiner Carmona | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Steiner Carmona to a minor league contract. |
| Nov 13, 2013 | Signed as free agent | Nick Punto | — | Athletics | Oakland Athletics signed free agent 2B Nick Punto. |
| Nov 13, 2013 | Signed as free agent | Tim Alderson | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Tim Alderson to a minor league contract and invited him to spring training. |
| Nov 13, 2013 | Signed as free agent | Antoan Richardson | — | New York Yankees | New York Yankees signed free agent CF Antoan Richardson to a minor league contract and invited him to spring training. |
| Nov 13, 2013 | Signed as free agent | Clete Thomas | — | Philadelphia Phillies | Philadelphia Phillies signed free agent CF Clete Thomas to a minor league contract and invited him to spring training. |
| Nov 13, 2013 | Signed as free agent | Jason Berken | — | San Francisco Giants | San Francisco Giants signed free agent RHP Jason Berken to a minor league contract and invited him to spring training. |
| Nov 13, 2013 | Signed as free agent | Pedro Hernandez | — | Colorado Rockies | Colorado Rockies signed free agent LHP Pedro Hernandez to a minor league contract and invited him to spring training. |
| Nov 13, 2013 | Signed as free agent | Sean McCauley | — | Washington Nationals | Washington Nationals signed free agent C Sean McCauley to a minor league contract. |
| Nov 13, 2013 | Signed as free agent | Rossmel Perez | — | Cincinnati Reds | Cincinnati Reds signed free agent C Rossmel Perez to a minor league contract and invited him to spring training. |
| Nov 13, 2013 | Signed as free agent | Will Startup | — | Detroit Tigers | Detroit Tigers signed free agent LHP Will Startup to a minor league contract. |
| Nov 13, 2013 | Signed as free agent | Nate Striz | — | Colorado Rockies | Colorado Rockies signed free agent RHP Nate Striz to a minor league contract. |
| Nov 13, 2013 | Signed as free agent | Mark Thomas | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Mark Thomas to a minor league contract. |
| Nov 13, 2013 | Signed as free agent | Rafael Ynoa | — | Colorado Rockies | Colorado Rockies signed free agent 2B Rafael Ynoa to a minor league contract and invited him to spring training. |
| Nov 13, 2013 | Signed as free agent | Eric Perrault | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Eric Perrault to a minor league contract. |
| Nov 13, 2013 | Signed as free agent | Guillermo Quiroz | — | San Francisco Giants | San Francisco Giants signed free agent C Guillermo Quiroz to a minor league contract and invited him to spring training. |
| Nov 13, 2013 | Signed as free agent | Chris Young | — | Washington Nationals | Washington Nationals signed free agent RHP Chris Young to a minor league contract and invited him to spring training. |
| Nov 13, 2013 | Signed as free agent | Ronny Paulino | — | Detroit Tigers | Detroit Tigers signed free agent C Ronny Paulino to a minor league contract. |
| Nov 13, 2013 | Signed as free agent | Jaime Pedroza | — | Chicago White Sox | Chicago White Sox signed free agent 2B Jaime Pedroza to a minor league contract. |
| Nov 13, 2013 | Signed as free agent | Josbel Coroba | — | Chicago White Sox | Chicago White Sox signed free agent LHP Josbel Coroba to a minor league contract. |
| Nov 13, 2013 | Signed as free agent | Cristopher Molina | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Cristopher Molina to a minor league contract. |
| Nov 12, 2013 | Signed as free agent | Marlon Byrd | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RF Marlon Byrd. |
| Nov 12, 2013 | Signed as free agent | Josh Johnson | — | Washington Nationals | Washington Nationals signed free agent 3B Josh Johnson to a minor league contract and invited him to spring training. |
| Nov 12, 2013 | Signed as free agent | Eduar Quinonez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Eduar Quinonez to a minor league contract. |
| Nov 12, 2013 | Signed as free agent | Albert Suárez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Albert Suarez to a minor league contract. |
| Nov 12, 2013 | Signed as free agent | Zelous Wheeler | — | New York Yankees | New York Yankees signed free agent 3B Zelous Wheeler to a minor league contract and invited him to spring training. |
| Nov 12, 2013 | Signed as free agent | Eli Whiteside | — | Chicago Cubs | Chicago Cubs signed free agent C Eli Whiteside to a minor league contract and invited him to spring training. |
| Nov 12, 2013 | Signed as free agent | Carlos Acevedo | — | Washington Nationals | Washington Nationals signed free agent RHP Carlos Acevedo to a minor league contract. |
| Nov 12, 2013 | Signed as free agent | Brayan Peña | — | Cincinnati Reds | Cincinnati Reds signed free agent C Brayan Pena. |
| Nov 12, 2013 | Signed as free agent | Ylexander Villarroel | — | Chicago White Sox | Chicago White Sox signed free agent C Ylexander Villarroel to a minor league contract. |
| Nov 12, 2013 | Signed as free agent | Keyder Aristigueta | — | Detroit Tigers | Detroit Tigers signed free agent 2B Keyder Aristigueta to a minor league contract. |
| Nov 12, 2013 | Signed as free agent | Ruber Aquino | — | Athletics | Oakland Athletics signed free agent RHP Ruber Aquino to a minor league contract. |
| Nov 12, 2013 | Signed as free agent | Alexander Calderon | — | Athletics | Oakland Athletics signed free agent LHP Alexander Calderon to a minor league contract. |
| Nov 12, 2013 | Signed as free agent | Enmanuel Sullivan | — | Athletics | Oakland Athletics signed free agent RHP Enmanuel Sullivan to a minor league contract. |
| Nov 12, 2013 | Signed as free agent | Daniel Romero | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Daniel Romero to a minor league contract. |
| Nov 12, 2013 | Signed as free agent | Victor Sobil | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Victor Sobil to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Mike Broadway | — | Toronto Blue Jays | Toronto Blue Jays signed free agent Michael Broadway. |
| Nov 11, 2013 | Signed as free agent | Jonathan Diaz | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Jonathan Diaz to a minor league contract and invited him to spring training. |
| Nov 11, 2013 | Signed as free agent | Marcus Walden | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Marcus Walden to a minor league contract and invited him to spring training. |
| Nov 11, 2013 | Released | Luis Mendoza | — | Kansas City Royals | Kansas City Royals released RHP Luis Mendoza. |
| Nov 11, 2013 | Signed as free agent | Shawn Camp | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Shawn Camp to a minor league contract and invited him to spring training. |
| Nov 11, 2013 | Signed as free agent | Julio Concepcion | — | Los Angeles Angels | Los Angeles Angels signed free agent RF Julio Concepcion to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Aaron Cunningham | — | Chicago Cubs | Chicago Cubs signed free agent RF Aaron Cunningham to a minor league contract and invited him to spring training. |
| Nov 11, 2013 | Signed as free agent | Lee Hyde | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Lee Hyde to a minor league contract and invited him to spring training. |
| Nov 11, 2013 | Signed as free agent | Walter Ibarra | — | Chicago Cubs | Chicago Cubs signed free agent SS Walter Ibarra to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Wade LeBlanc | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Wade LeBlanc to a minor league contract and invited him to spring training. |
| Nov 11, 2013 | Signed as free agent | Daryl Maday | — | San Francisco Giants | San Francisco Giants signed free agent RHP Daryl Maday to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Jim Miller | — | New York Yankees | New York Yankees signed free agent RHP Jim Miller to a minor league contract and invited him to spring training. |
| Nov 11, 2013 | Signed as free agent | Scott Moore | — | St. Louis Cardinals | St. Louis Cardinals signed free agent 3B Scott Moore to a minor league contract and invited him to spring training. |
| Nov 11, 2013 | Signed as free agent | Rey Navarro | — | Cincinnati Reds | Cincinnati Reds signed free agent 3B Rey Navarro to a minor league contract and invited him to spring training. |
| Nov 11, 2013 | Signed as free agent | Zach Russell | — | Texas Rangers | Texas Rangers signed free agent RHP Zach Russell to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Jimmy Swift | — | Los Angeles Angels | Los Angeles Angels signed free agent SS Jimmy Swift to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Eliezer Cuello | — | Miami Marlins | Miami Marlins signed free agent RHP Eliezer Cuello to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Benito Olivo | — | Miami Marlins | Miami Marlins signed free agent OF Benito Olivo to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Jason Bartlett | — | Minnesota Twins | Minnesota Twins signed free agent SS Jason Bartlett to a minor league contract and invited him to spring training. |
| Nov 11, 2013 | Signed as free agent | Steven Lerud | — | Atlanta Braves | Atlanta Braves signed free agent C Steven Lerud to a minor league contract and invited him to spring training. |
| Nov 11, 2013 | Signed as free agent | Juan Montes | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Juan Montes to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Bryan Abreu | — | Houston Astros | Houston Astros signed free agent RHP Bryan Abreu to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Carlos Hiraldo | — | Houston Astros | Houston Astros signed free agent LHP Carlos Hiraldo to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Edgar Lorenzo | — | Houston Astros | Houston Astros signed free agent CF Edgar Lorenzo to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Ezequiel Madera | — | Houston Astros | Houston Astros signed free agent RHP Ezequiel Madera to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Salvador Montano | — | Houston Astros | Houston Astros signed free agent LHP Salvador Montano to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Starlyn Taveras | — | Houston Astros | Houston Astros signed free agent RHP Starlyn Taveras to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Andres Luna | — | St. Louis Cardinals | St. Louis Cardinals signed free agent OF Andres Luna to a minor league contract. |
| Nov 11, 2013 | Signed as free agent | Angelo Santana | — | Texas Rangers | Texas Rangers signed free agent OF Angelo Santana to a minor league contract. |
| Nov 10, 2013 | Signed as free agent | Caleb Clay | — | San Francisco Giants | San Francisco Giants signed free agent RHP Caleb Clay to a minor league contract. |
| Nov 10, 2013 | Signed as free agent | Tommy Layne | — | Boston Red Sox | Boston Red Sox signed free agent LHP Tommy Layne to a minor league contract and invited him to spring training. |
| Nov 10, 2013 | Signed as free agent | José Taveras | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Jose Taveras to a minor league contract. |
| Nov 9, 2013 | Signed as free agent | Franklin Rollin | — | Texas Rangers | Texas Rangers signed free agent SS Franklin Rollin to a minor league contract. |
| Nov 8, 2013 | Signed as free agent | J.C. Boscan | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C J.C. Boscan to a minor league contract and invited him to spring training. |
| Nov 8, 2013 | Signed as free agent | Joel Carreño | — | New York Mets | New York Mets signed free agent RHP Joel Carreno to a minor league contract and invited him to spring training. |
| Nov 8, 2013 | Signed as free agent | Max Ramirez | — | Cincinnati Reds | Cincinnati Reds signed free agent C Max Ramirez to a minor league contract and invited him to spring training. |
| Nov 8, 2013 | Signed as free agent | Anthony Seratelli | — | New York Mets | New York Mets signed free agent 3B Anthony Seratelli to a minor league contract and invited him to spring training. |
| Nov 8, 2013 | Signed as free agent | Juan Diaz | — | Miami Marlins | Miami Marlins signed free agent SS Juan Diaz to a minor league contract and invited him to spring training. |
| Nov 8, 2013 | Signed as free agent | Juan Gonzalez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Juan Gonzalez to a minor league contract. |
| Nov 8, 2013 | Signed as free agent | Seth Loman | — | Atlanta Braves | Atlanta Braves signed free agent 1B Seth Loman to a minor league contract. |
| Nov 8, 2013 | Signed as free agent | Mario Martinez | — | Boston Red Sox | Boston Red Sox signed free agent 3B Mario Martinez to a minor league contract. |
| Nov 8, 2013 | Signed as free agent | Mike McCoy | — | Boston Red Sox | Boston Red Sox signed free agent 2B Mike McCoy to a minor league contract and invited him to spring training. |
| Nov 8, 2013 | Signed as free agent | David Purcey | — | Chicago White Sox | Chicago White Sox signed free agent LHP David Purcey to a minor league contract and invited him to spring training. |
| Nov 8, 2013 | Signed as free agent | Justin Souza | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Justin Souza to a minor league contract. |
| Nov 8, 2013 | Signed as free agent | Jake Floethe | — | Chicago White Sox | Chicago White Sox signed free agent RHP Jake Floethe to a minor league contract. |
| Nov 8, 2013 | Signed as free agent | Daniel Mayora | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 3B Daniel Mayora to a minor league contract. |
| Nov 8, 2013 | Signed as free agent | Endy Guaba | — | Miami Marlins | Miami Marlins signed free agent C Endy Guaba to a minor league contract. |
| Nov 8, 2013 | Signed as free agent | Yeison Mateo | — | Kansas City Royals | Kansas City Royals signed free agent RHP Yeison Mateo to a minor league contract. |
| Nov 8, 2013 | Signed as free agent | Yeison Melo | — | Kansas City Royals | Kansas City Royals signed free agent OF Yeison Melo. |
| Nov 8, 2013 | Signed as free agent | Jose Infante | — | New York Yankees | New York Yankees signed free agent CF Jose Infante to a minor league contract. |
| Nov 7, 2013 | Signed as free agent | Francisco Diaz | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Francisco Diaz to a minor league contract. |
| Nov 7, 2013 | Signed as free agent | Danny Dorn | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LF Danny Dorn to a minor league contract and invited him to spring training. |
| Nov 6, 2013 | Signed as free agent | Clayton Mortensen | — | Kansas City Royals | Kansas City Royals signed free agent RHP Clayton Mortensen to a minor league contract. |
| Nov 6, 2013 | Signed as free agent | Anthony Norman | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Anthony Norman to a minor league contract. |
| Nov 6, 2013 | Signed as free agent | Leury Bonilla | — | Seattle Mariners | Seattle Mariners signed free agent 3B Leury Bonilla to a minor league contract. |
| Nov 6, 2013 | Signed as free agent | Victor Mateo | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Victor Mateo to a minor league contract and invited him to spring training. |
| Nov 6, 2013 | Signed as free agent | Miles Durham | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 1B Miles Durham to a minor league contract. |
| Nov 6, 2013 | Signed as free agent | Jhonathan Ramos | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Jhonathan Ramos to a minor league contract. |
| Nov 6, 2013 | Signed as free agent | Mason Tobin | — | San Francisco Giants | San Francisco Giants signed free agent RHP Mason Tobin to a minor league contract and invited him to spring training. |
| Nov 6, 2013 | Signed as free agent | Mike Wilson | — | Cincinnati Reds | Cincinnati Reds signed free agent RF Mike Wilson to a minor league contract. |
| Nov 6, 2013 | Signed as free agent | Jesus Sanchez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Jesus Sanchez to a minor league contract. |
| Nov 6, 2013 | Signed as free agent | Ricardo Perez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent 2B Ricardo Perez to a minor league contract. |
| Nov 5, 2013 | Signed as free agent | Juan Pablo Pérez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Juan Perez to a minor league contract and invited him to spring training. |
| Nov 5, 2013 | Signed as free agent | Geovany Soto | — | Texas Rangers | Texas Rangers signed free agent C Geovany Soto. |
| Nov 5, 2013 | Signed as free agent | Jordan Parraz | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RF Jordan Parraz to a minor league contract. |
| Nov 5, 2013 | Signed as free agent | Cameron Kneeland | — | Baltimore Orioles | Baltimore Orioles signed free agent 3B Cameron Kneeland to a minor league contract. |
| Nov 5, 2013 | Signed as free agent | Chris Volstad | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Chris Volstad to a minor league contract. |
| Nov 5, 2013 | Signed as free agent | Jonathan Arias | — | Seattle Mariners | Seattle Mariners signed free agent RHP Jonathan Arias to a minor league contract and invited him to spring training. |
| Nov 5, 2013 | Signed as free agent | Orangel Arenas | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Orangel Arenas to a minor league contract. |
| Nov 5, 2013 | Signed as free agent | Hunter Jones | — | Chicago White Sox | Chicago White Sox signed free agent OF Hunter Jones to a minor league contract. |
| Nov 5, 2013 | Signed as free agent | Luis Vasquez | — | Atlanta Braves | Atlanta Braves signed free agent RHP Luis Vasquez to a minor league contract. |
| Nov 5, 2013 | Signed as free agent | Enrique De Pena | — | Detroit Tigers | Detroit Tigers signed free agent RHP Enrique De Pena to a minor league contract. |
| Nov 5, 2013 | Signed as free agent | Juan Alvarez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Juan Alvarez to a minor league contract. |
| Nov 5, 2013 | Signed as free agent | Franyel Casadilla | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Franyel Casadilla to a minor league contract. |
| Nov 5, 2013 | Signed as free agent | Oneiver Diaz | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Oneiver Diaz to a minor league contract. |
| Nov 5, 2013 | Signed as free agent | Luis Flores | — | St. Louis Cardinals | St. Louis Cardinals signed free agent SS Luis Flores to a minor league contract. |
| Nov 5, 2013 | Signed as free agent | Jonathan Rivera | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RF Jonathan Rivera to a minor league contract. |
| Nov 5, 2013 | Signed as free agent | Carlos Rodriguez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent OF Carlos Rodriguez to a minor league contract. |
| Nov 4, 2013 | Signed as free agent | Ross Wolf | — | Texas Rangers | Texas Rangers signed free agent Ross Wolf. |
| Nov 4, 2013 | Signed as free agent | Nick Grim | — | Miami Marlins | Miami Marlins signed free agent RHP Nicholas Grim to a minor league contract. |
| Nov 4, 2013 | Signed as free agent | Austin McClune | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent OF Austin McClune to a minor league contract. |
| Nov 3, 2013 | Signed as free agent | Gregorix Mateo | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Gregorix Mateo to a minor league contract. |
| Nov 2, 2013 | Signed as free agent | Greg Picart | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent SS Greg Picart to a minor league contract. |
| Nov 1, 2013 | Signed as free agent | JC Ramírez | — | Cleveland Guardians | Cleveland Indians signed free agent RHP J.C. Ramirez to a minor league contract and invited him to spring training. |
| Nov 1, 2013 | Signed as free agent | Jerol Guzman | — | Atlanta Braves | Atlanta Braves signed free agent C Jerol Guzman to a minor league contract. |
| Nov 1, 2013 | Signed as free agent | Diogenes Rosario | — | Chicago White Sox | Chicago White Sox signed free agent RHP Diogenes Rosario to a minor league contract. |
| Nov 1, 2013 | Signed as free agent | Luis Asuncion | — | San Diego Padres | San Diego Padres signed free agent OF Luis Asuncion to a minor league contract. |
| Nov 1, 2013 | Signed as free agent | Diomar Lopez | — | San Diego Padres | San Diego Padres signed free agent RHP Diomar Lopez to a minor league contract. |
| Nov 1, 2013 | Signed as free agent | Westhers Magdaleno | — | San Diego Padres | San Diego Padres signed free agent SS Westhers Magdaleno to a minor league contract. |
| Nov 1, 2013 | Signed as free agent | Dayon Olmo | — | San Diego Padres | San Diego Padres signed free agent OF Dayon Olmo to a minor league contract. |
| Nov 1, 2013 | Signed as free agent | Mayky Perez | — | San Diego Padres | San Diego Padres signed free agent RHP Mayky Perez to a minor league contract. |
| Nov 1, 2013 | Signed as free agent | Carlos Sosa | — | San Diego Padres | San Diego Padres signed free agent 3B Carlos Sosa to a minor league contract. |
| Nov 1, 2013 | Signed as free agent | Génesis Cabrera | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LHP Genesis Cabrera to a minor league contract. |
| Oct 31, 2013 | Trade | Colt Hynes | San Diego Padres | Cleveland Guardians | San Diego Padres traded LHP Colt Hynes to Cleveland Indians for cash. |
| Oct 31, 2013 | Released | Chris Perez | — | Cleveland Guardians | Cleveland Indians released RHP Chris Perez. |
| Oct 31, 2013 | Signed as free agent | Jason Giambi | — | Cleveland Guardians | Cleveland Indians signed free agent DH Jason Giambi to a minor league contract and invited him to spring training. |
| Oct 31, 2013 | Signed as free agent | Race Parmenter | — | Atlanta Braves | Atlanta Braves signed free agent RHP Race Parmenter to a minor league contract. |
| Oct 31, 2013 | Signed as free agent | Miguelangel Bastidas | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Miguelangel Bastidas to a minor league contract. |
| Oct 31, 2013 | Signed as free agent | Luis Carrasco | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Luis Carrasco to a minor league contract. |
| Oct 31, 2013 | Signed as free agent | Luis Mendoza | — | Philadelphia Phillies | Philadelphia Phillies signed free agent OF Luis Mendoza to a minor league contract. |
| Oct 31, 2013 | Signed as free agent | Yorbys Tabares | — | Philadelphia Phillies | Philadelphia Phillies signed free agent OF Yorbys Tabares to a minor league contract. |
| Oct 30, 2013 | Signed as free agent | Andy LaRoche | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 3B Andy LaRoche to a minor league contract and invited him to spring training. |
| Oct 30, 2013 | Signed as free agent | Rafael Santana | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Rafael Santana to a minor league contract. |
| Oct 30, 2013 | Signed as free agent | Jose Sandoval | — | Seattle Mariners | Seattle Mariners signed free agent OF Jose Sandoval to a minor league contract. |
| Oct 30, 2013 | Signed as free agent | Miguel De La Cruz | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Miguel De La Cruz to a minor league contract. |
| Oct 29, 2013 | Signed as free agent | José Abreu | — | Chicago White Sox | Chicago White Sox signed free agent 1B Jose Abreu. |
| Oct 29, 2013 | Signed as free agent | Philip Humber | — | Athletics | Oakland Athletics signed free agent RHP Philip Humber to a minor league contract and invited him to spring training. |
| Oct 29, 2013 | Signed as free agent | Jorge De Leon | — | Houston Astros | Houston Astros signed free agent RHP Jorge De Leon to a minor league contract and invited him to spring training. |
| Oct 29, 2013 | Signed as free agent | Shailin Escalante | — | New York Yankees | New York Yankees signed free agent RHP Shailin Escalante to a minor league contract. |
| Oct 29, 2013 | Signed as free agent | Eugene Helder | — | Seattle Mariners | Seattle Mariners signed free agent SS Eugene Helder to a minor league contract. |
| Oct 29, 2013 | Signed as free agent | Cristian Encarnacion | — | Texas Rangers | Texas Rangers signed free agent OF Cristian Encarnacion to a minor league contract. |
| Oct 28, 2013 | Signed as free agent | Blake Lalli | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Blake Lalli to a minor league contract and invited him to spring training. |
| Oct 28, 2013 | Signed as free agent | Elias Arias | — | Atlanta Braves | Atlanta Braves signed free agent OF Elias Arias to a minor league contract. |
| Oct 28, 2013 | Signed as free agent | Alfredo Mena | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Alfredo Mena to a minor league contract. |
| Oct 28, 2013 | Signed as free agent | Yean Paredes | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Yean Paredes to a minor league contract. |
| Oct 28, 2013 | Signed as free agent | Leandro Santana | — | Cincinnati Reds | Cincinnati Reds signed free agent 3B Leandro Santana to a minor league contract. |
| Oct 28, 2013 | Signed as free agent | Andy Sugilio | — | Cincinnati Reds | Cincinnati Reds signed free agent SS Andy Sugilio to a minor league contract. |
| Oct 28, 2013 | Signed as free agent | Gabriel Mejia | — | Cleveland Guardians | Cleveland Indians signed free agent SS Gabriel Mejia to a minor league contract. |
| Oct 28, 2013 | Signed as free agent | Eduardo Polanco | — | New York Yankees | New York Yankees signed free agent LHP Eduardo Polanco to a minor league contract. |
| Oct 27, 2013 | Signed as free agent | Fabio Martinez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Fabio Martinez to a minor league contract. |
| Oct 26, 2013 | Signed as free agent | Eddy Morrobel | — | Texas Rangers | Texas Rangers signed free agent RHP Eddy Morrobel to a minor league contract. |
| Oct 26, 2013 | Signed as free agent | Daniel Ramos | — | New York Yankees | New York Yankees signed free agent RHP Daniel Ramos to a minor league contract. |
| Oct 26, 2013 | Signed as free agent | Victor Concepcion | — | San Francisco Giants | San Francisco Giants signed free agent RHP Victor Concepcion to a minor league contract. |
| Oct 26, 2013 | Signed as free agent | Weilly Yan | — | San Francisco Giants | San Francisco Giants signed free agent RHP Weilly Yan to a minor league contract. |
| Oct 25, 2013 | Signed as free agent | Jonathan Padilla | — | New York Yankees | New York Yankees signed free agent RHP Jonathan Padilla to a minor league contract. |
| Oct 25, 2013 | Signed as free agent | Geoandry Montilla | — | Seattle Mariners | Seattle Mariners signed free agent C Geoandry Montilla to a minor league contract. |
| Oct 24, 2013 | Signed as free agent | Trevor Reckling | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Trevor Reckling to a minor league contract. |
| Oct 24, 2013 | Signed as free agent | Jason Bourgeois | — | Cincinnati Reds | Cincinnati Reds signed free agent CF Jason Bourgeois to a minor league contract and invited him to spring training. |
| Oct 24, 2013 | Signed as free agent | Joel Valera | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Joel Valera to a minor league contract. |
| Oct 23, 2013 | Trade | Alex Castellanos | Los Angeles Dodgers | Boston Red Sox | Los Angeles Dodgers traded RF Alex Castellanos to Boston Red Sox for cash and OF Jeremy Hazelbaker. |
| Oct 23, 2013 | Signed as free agent | Aaron Poreda | — | Texas Rangers | Texas Rangers signed free agent LHP Aaron Poreda to a minor league contract and invited him to spring training. |
| Oct 23, 2013 | Signed as free agent | Jeffry Done | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Jeffry Done to a minor league contract. |
| Oct 23, 2013 | Signed as free agent | Luigence Thomas | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Luigence Thomas to a minor league contract. |
| Oct 22, 2013 | Signed as free agent | Alex Guerrero | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent Alex Guerrero. |
| Oct 22, 2013 | Signed as free agent | Nicol Valderrey | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 1B Nicol Valderrey to a minor league contract. |
| Oct 21, 2013 | Signed | Taylor Green | — | Milwaukee Brewers | Milwaukee Brewers signed 3B Taylor Green. |
| Oct 21, 2013 | Signed as free agent | Rachid Engelhardt | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Rachid Engelhardt to a minor league contract. |
| Oct 21, 2013 | Signed as free agent | Jose Ramos | — | Houston Astros | Houston Astros signed free agent RHP Jose Ramos to a minor league contract. |
| Oct 21, 2013 | Signed as free agent | Abdiel Saldana | — | Houston Astros | Houston Astros signed free agent RHP Abdiel Saldana to a minor league contract. |
| Oct 20, 2013 | Signed as free agent | Nelson Acosta | — | Chicago White Sox | Chicago White Sox signed free agent RHP Nelson Acosta to a minor league contract. |
| Oct 19, 2013 | Signed as free agent | Kyle Lotzkar | — | Texas Rangers | Texas Rangers signed free agent RHP Kyle Lotzkar to a minor league contract. |
| Oct 19, 2013 | Signed as free agent | Miguel Rosario | — | New York Yankees | New York Yankees signed free agent RHP Miguel Rosario to a minor league contract. |
| Oct 18, 2013 | Signed as free agent | Josh Sullivan | — | Colorado Rockies | Colorado Rockies signed free agent RHP Josh Sullivan to a minor league contract and invited him to spring training. |
| Oct 17, 2013 | Trade | Jackson Laumann | Atlanta Braves | Chicago White Sox | Atlanta Braves traded 1B Jackson Laumann to Chicago White Sox for Future Considerations. |
| Oct 17, 2013 | Signed as free agent | Keinner Piña | — | Los Angeles Angels | Los Angeles Angels signed free agent C Keinner Pina to a minor league contract. |
| Oct 16, 2013 | Trade | Ben Kline | Tampa Bay Rays | Chicago White Sox | Tampa Bay Rays traded LHP Sean Bierman and 3B Ben Kline to Chicago White Sox. |
| Oct 16, 2013 | Signed as free agent | Andrew Case | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Andrew Case to a minor league contract. |
| Oct 16, 2013 | Signed as free agent | Hector Guance | — | Washington Nationals | Washington Nationals signed free agent RHP Hector Guance to a minor league contract. |
| Oct 16, 2013 | Signed as free agent | Anthony Dirocie | — | New York Mets | New York Mets signed free agent OF Anthony Dirocie to a minor league contract. |
| Oct 16, 2013 | Signed as free agent | Mikell Granberry | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Mikell Granberry to a minor league contract. |
| Oct 15, 2013 | Signed as free agent | Carlos Bustamante | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Carlos Bustamante to a minor league contract. |
| Oct 14, 2013 | Trade | Jimmy Rider | Pittsburgh Pirates | Boston Red Sox | Pittsburgh Pirates traded 3B Jimmy Rider to Boston Red Sox for Future Considerations. |
| Oct 14, 2013 | Signed as free agent | Tim Adleman | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Timothy Adleman to a minor league contract. |
| Oct 14, 2013 | Signed as free agent | Anderson Diaz | — | New York Yankees | New York Yankees signed free agent LHP Anderson Diaz to a minor league contract. |
| Oct 14, 2013 | Signed as free agent | Abel Duarte | — | New York Yankees | New York Yankees signed free agent RHP Abel Duarte to a minor league contract. |
| Oct 14, 2013 | Signed as free agent | Yeangel Pujols | — | New York Yankees | New York Yankees signed free agent LF Yeangel Pujols to a minor league contract. |
| Oct 14, 2013 | Signed as free agent | Eumir Sepulveda | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Eumir Sepulveda to a minor league contract. |
| Oct 13, 2013 | Signed as free agent | Marquis Riley | — | Atlanta Braves | Atlanta Braves signed free agent 2B Marquis Riley to a minor league contract. |
| Oct 12, 2013 | Signed as free agent | Luke Montz | — | Athletics | Oakland Athletics signed free agent C Luke Montz to a minor league contract and invited him to spring training. |
| Oct 12, 2013 | Signed as free agent | Welfrin Mateo | — | New York Yankees | New York Yankees signed free agent 2B Welfrin Mateo to a minor league contract. |
| Oct 12, 2013 | Signed as free agent | Leyfer Ramirez | — | New York Yankees | New York Yankees signed free agent RHP Leyfer Ramirez to a minor league contract. |
| Oct 12, 2013 | Signed as free agent | Amauris Sanchez | — | New York Yankees | New York Yankees signed free agent RHP Amauris Sanchez to a minor league contract. |
| Oct 12, 2013 | Signed as free agent | Orby Tavares | — | New York Yankees | New York Yankees signed free agent LHP Orby Tavares to a minor league contract. |
| Oct 12, 2013 | Signed as free agent | Yeudy Garcia | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Yeudy Garcia to a minor league contract. |
| Oct 12, 2013 | Signed as free agent | Raymond Rodriguez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Raymond Rodriguez to a minor league contract. |
| Oct 12, 2013 | Signed as free agent | Edgar Santana | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Edgar Santana to a minor league contract. |
| Oct 12, 2013 | Signed as free agent | Cesar Santos | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Cesar Santos to a minor league contract. |
| Oct 12, 2013 | Signed as free agent | Angel Vasquez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Angel Vasquez to a minor league contract. |
| Oct 11, 2013 | Signed as free agent | Brett Wallach | — | Miami Marlins | Miami Marlins signed free agent RHP Brett Wallach to a minor league contract. |
| Oct 11, 2013 | Signed as free agent | Juan Silvestre | — | Miami Marlins | Miami Marlins signed free agent LHP Juan Silvestre to a minor league contract. |
| Oct 11, 2013 | Signed as free agent | Arby Fields | — | Seattle Mariners | Seattle Mariners signed free agent OF Arby Fields to a minor league contract. |
| Oct 11, 2013 | Signed as free agent | Doug Bernier | — | Minnesota Twins | Minnesota Twins signed free agent SS Doug Bernier to a minor league contract and invited him to spring training. |
| Oct 11, 2013 | Signed as free agent | Pete Perez | — | Atlanta Braves | Atlanta Braves signed free agent RHP Pete Perez to a minor league contract. |
| Oct 10, 2013 | Signed as free agent | Dalier Hinojosa | — | Boston Red Sox | Boston Red Sox signed free agent RHP Dalier Hinojosa to a minor league contract. |
| Oct 10, 2013 | Signed as free agent | Telmito Agustin | — | Washington Nationals | Washington Nationals signed free agent OF Telmito Agustin to a minor league contract. |
| Oct 10, 2013 | Signed as free agent | Jose Baez | — | New York Yankees | New York Yankees signed free agent RHP Jose Baez to a minor league contract. |
| Oct 9, 2013 | Signed as free agent | Gregor Mora | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Gregor Mora to a minor league contract. |
| Oct 9, 2013 | Signed as free agent | Luis Rosario | — | New York Yankees | New York Yankees signed free agent RHP Luis Rosario to a minor league contract. |
| Oct 8, 2013 | Signed as free agent | Jose Geraldo | — | New York Mets | New York Mets signed free agent RHP Jose Geraldo to a minor league contract. |
| Oct 7, 2013 | Signed as free agent | Jose Reyes | — | Chicago White Sox | Chicago White Sox signed free agent SS Jose Reyes to a minor league contract. |
| Oct 7, 2013 | Signed as free agent | Sammy De Jesus | — | New York Yankees | New York Yankees signed free agent C Sammy De Jesus to a minor league contract. |
| Oct 5, 2013 | Trade | Duke Welker | Pittsburgh Pirates | Minnesota Twins | Pittsburgh Pirates traded RHP Duke Welker to Minnesota Twins. |
| Oct 5, 2013 | Signed as free agent | Albert Campos | — | Atlanta Braves | Atlanta Braves signed free agent RHP Albert Campos to a minor league contract. |
| Oct 5, 2013 | Signed as free agent | Enmanuel Arias | — | San Diego Padres | San Diego Padres signed free agent 3B Enmanuel Arias to a minor league contract. |
| Oct 4, 2013 | Signed as free agent | Juan Diaz | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Juan Diaz to a minor league contract. |
| Oct 3, 2013 | Signed as free agent | Randel Alcantara | — | Detroit Tigers | Detroit Tigers signed free agent 3B Randel Alcantara to a minor league contract. |
| Oct 2, 2013 | Signed as free agent | Sean Mahley | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Sean Mahley to a minor league contract. |
| Oct 2, 2013 | Signed as free agent | Daniel Bowman | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Daniel Bowman to a minor league contract. |
| Oct 2, 2013 | Signed as free agent | Steve McQuail | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 1B Steve McQuail to a minor league contract. |
| Oct 2, 2013 | Signed as free agent | Danny Canela | — | Chicago Cubs | Chicago Cubs signed free agent C Daniel Canela to a minor league contract. |
| Oct 2, 2013 | Signed as free agent | Luis Pena | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Luis Pena to a minor league contract. |
| Oct 2, 2013 | Signed as free agent | Rosmel Purroy | — | San Diego Padres | San Diego Padres signed free agent RHP Rosmel Purroy to a minor league contract. |
| Oct 2, 2013 | Signed as free agent | Jose Sotillo | — | San Diego Padres | San Diego Padres signed free agent OF Jose Sotillo to a minor league contract. |
| Oct 1, 2013 | Signed as free agent | R.J. Johnson | — | New York Yankees | New York Yankees signed free agent RHP Ronald Johnson to a minor league contract. |
| Oct 1, 2013 | Signed | Matthew Chavez | — | San Francisco Giants | San Francisco Giants signed RHP Matthew Chavez. |
| Oct 1, 2013 | Signed as free agent | Luís Madero | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent Luis Madero. |
| Oct 1, 2013 | Signed as free agent | Carlos Rivero | — | Cincinnati Reds | Cincinnati Reds signed free agent SS Carlos Rivero to a minor league contract. |
| Oct 1, 2013 | Signed as free agent | Felix Tati | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Felix Tati to a minor league contract. |
| Oct 1, 2013 | Signed as free agent | Edwin Rodriguez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Edwin Rodriguez to a minor league contract. |
| Oct 1, 2013 | Signed as free agent | René Pinto | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Rene Pinto to a minor league contract. |
| Sep 30, 2013 | Signed as free agent | Seth Lintz | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Seth Lintz to a minor league contract. |
| Sep 30, 2013 | Signed as free agent | Dustin Loggins | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Dustin Loggins to a minor league contract. |
| Sep 30, 2013 | Signed as free agent | Jake Roberts | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Jacob Roberts to a minor league contract. |
| Sep 30, 2013 | Signed as free agent | Francisco Mena | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Francisco Mena to a minor league contract. |
| Sep 28, 2013 | Signed as free agent | Goldny Mills | — | Los Angeles Angels | Los Angeles Angels signed free agent SS Goldny Mills to a minor league contract. |
| Sep 28, 2013 | Signed as free agent | Santiago Rincon | — | Tampa Bay Rays | Tampa Bay Rays signed free agent 1B Santiago Rincon to a minor league contract. |
| Sep 27, 2013 | Signed as free agent | Kevin Gonzalez | — | New York Yankees | New York Yankees signed free agent 1B Kevin Gonzalez to a minor league contract. |
| Sep 27, 2013 | Signed as free agent | Mecky Coronado | — | San Francisco Giants | San Francisco Giants signed free agent C Mecky Coronado to a minor league contract. |
| Sep 26, 2013 | Signed as free agent | Gerald Benzant | — | Houston Astros | Houston Astros signed free agent RHP Gerald Benzant to a minor league contract. |
| Sep 25, 2013 | Signed as free agent | Jairo Garcia | — | New York Yankees | New York Yankees signed free agent RHP Jairo Garcia to a minor league contract. |
| Sep 24, 2013 | Released | Kyle Lotzkar | — | Cincinnati Reds | Cincinnati Reds released RHP Kyle Lotzkar. |
| Sep 24, 2013 | Released | Wilson Betemit | — | Baltimore Orioles | Baltimore Orioles released 3B Wilson Betemit. |
| Sep 24, 2013 | Signed as free agent | Nector Ramirez | — | Washington Nationals | Washington Nationals signed free agent RHP Nector Ramirez to a minor league contract. |
| Sep 24, 2013 | Signed as free agent | Bryan De La Cruz | — | Houston Astros | Houston Astros signed free agent OF Bryan De La Cruz to a minor league contract. |
| Sep 23, 2013 | Signed as free agent | Justin Freeman | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Justin Freeman to a minor league contract. |
| Sep 23, 2013 | Signed as free agent | Nate Reed | — | Boston Red Sox | Boston Red Sox signed free agent LHP Nathan Reed to a minor league contract. |
| Sep 23, 2013 | Signed as free agent | Henry Martinez | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Henry Martinez to a minor league contract. |
| Sep 22, 2013 | Signed as free agent | Alan Oaks | — | Chicago Cubs | Chicago Cubs signed free agent RHP Alan Oaks to a minor league contract. |
| Sep 22, 2013 | Signed as free agent | Mark Hamburger | — | Minnesota Twins | Minnesota Twins signed free agent RHP Mark Hamburger to a minor league contract. |
| Sep 21, 2013 | Trade | Frank De Los Santos | Tampa Bay Rays | Chicago White Sox | Tampa Bay Rays traded LHP Frank De Los Santos to Chicago White Sox for Player To Be Named Later. |
| Sep 21, 2013 | Signed as free agent | Chris Costantino | — | Atlanta Braves | Atlanta Braves signed free agent RHP Chris Costantino to a minor league contract. |
| Sep 21, 2013 | Signed as free agent | Vidauri Saba | — | Cincinnati Reds | Cincinnati Reds signed free agent SS Vidauri Saba to a minor league contract. |
| Sep 21, 2013 | Signed as free agent | Ismel Lopez | — | Texas Rangers | Texas Rangers signed free agent RHP Ismel Lopez to a minor league contract. |
| Sep 21, 2013 | Signed as free agent | Luis Lopez | — | Texas Rangers | Texas Rangers signed free agent RHP Luis Lopez to a minor league contract. |
| Sep 21, 2013 | Signed as free agent | Jose Lugo | — | Texas Rangers | Texas Rangers signed free agent OF Jose Lugo to a minor league contract. |
| Sep 21, 2013 | Signed as free agent | Luis Mejias | — | Texas Rangers | Texas Rangers signed free agent SS Luis Mejias to a minor league contract. |
| Sep 21, 2013 | Signed as free agent | Alejandro Rojas | — | Texas Rangers | Texas Rangers signed free agent C Alejandro Rojas to a minor league contract. |
| Sep 20, 2013 | Signed as free agent | Ysrael Abreu | — | New York Yankees | New York Yankees signed free agent RHP Ysrael Abreu to a minor league contract. |
| Sep 20, 2013 | Signed as free agent | Alexander Perez | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Alexander Perez to a minor league contract. |
| Sep 20, 2013 | Signed as free agent | Yandy Díaz | — | Cleveland Guardians | Cleveland Indians signed free agent SS Yandy Diaz to a minor league contract. |
| Sep 19, 2013 | Trade | Matthew Spann | Tampa Bay Rays | Washington Nationals | Tampa Bay Rays traded LHP Matthew Spann to Washington Nationals. |
| Sep 19, 2013 | Signed as free agent | Daniel Mavo | — | Texas Rangers | Texas Rangers signed free agent LHP Daniel Mavo to a minor league contract. |
| Sep 19, 2013 | Signed as free agent | Rafael Volquez | — | Texas Rangers | Texas Rangers signed free agent RHP Rafael Volquez to a minor league contract. |
| Sep 19, 2013 | Signed as free agent | Wilber Pena | — | Washington Nationals | Washington Nationals signed free agent RHP Wilber Pena to a minor league contract. |
| Sep 19, 2013 | Signed as free agent | Sergio Suarez | — | Texas Rangers | Texas Rangers signed free agent LHP Sergio Suarez to a minor league contract. |
| Sep 18, 2013 | Signed as free agent | Justin Miller | — | Detroit Tigers | Detroit Tigers signed free agent RHP Justin Miller to a minor league contract. |
| Sep 18, 2013 | Signed as free agent | Yan Sanchez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent SS Yan Sanchez to a minor league contract. |
| Sep 18, 2013 | Signed as free agent | Victor Romero | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Victor Romero to a minor league contract. |
| Sep 18, 2013 | Signed as free agent | Yhonson Rojas | — | Texas Rangers | Texas Rangers signed free agent LHP Yhonson Rojas to a minor league contract. |
| Sep 18, 2013 | Signed as free agent | Luis Silva | — | Texas Rangers | Texas Rangers signed free agent SS Luis Silva to a minor league contract. |
| Sep 18, 2013 | Signed as free agent | Jose Suarez | — | Texas Rangers | Texas Rangers signed free agent C Jose Suarez to a minor league contract. |
| Sep 18, 2013 | Signed as free agent | Samir Vivas | — | Texas Rangers | Texas Rangers signed free agent RHP Samir Vivas to a minor league contract. |
| Sep 17, 2013 | Signed as free agent | Anthony Cantillo | — | Tampa Bay Rays | Tampa Bay Rays signed free agent 2B Anthony Cantillo to a minor league contract. |
| Sep 16, 2013 | Released | Cody Ransom | — | Chicago Cubs | Chicago Cubs released 3B Cody Ransom. |
| Sep 16, 2013 | Signed as free agent | Fabian Nieva | — | Boston Red Sox | Boston Red Sox signed free agent 3B Fabian Nieva to a minor league contract. |
| Sep 16, 2013 | Signed as free agent | Humberto Mejía | — | Miami Marlins | Miami Marlins signed free agent RHP Humberto Mejia to a minor league contract. |
| Sep 16, 2013 | Signed as free agent | Edison Rodriguez | — | New York Yankees | New York Yankees signed free agent RHP Edison Rodriguez to a minor league contract. |
| Sep 16, 2013 | Signed as free agent | Rodolfo Martinez | — | San Francisco Giants | San Francisco Giants signed free agent RHP Rodolfo Martinez to a minor league contract. |
| Sep 16, 2013 | Signed as free agent | Yimmelvyn Alonzo | — | Texas Rangers | Texas Rangers signed free agent SS Yimmelvyn Alonzo to a minor league contract. |
| Sep 16, 2013 | Signed as free agent | Junior Marte | — | Chicago Cubs | Chicago Cubs signed free agent RHP Junior Marte to a minor league contract. |
| Sep 14, 2013 | Signed as free agent | Takumi Numata | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Takumi Numata to a minor league contract. |
| Sep 13, 2013 | Trade | David Paulino | Detroit Tigers | Houston Astros | Detroit Tigers traded RHP David Paulino to Houston Astros. |
| Sep 13, 2013 | Signed as free agent | Jefry Sierra | — | Cincinnati Reds | Cincinnati Reds signed free agent CF Jefry Sierra to a minor league contract. |
| Sep 12, 2013 | Signed as free agent | Miguel Tejada | — | Los Angeles Angels | Los Angeles Angels signed free agent CF Miguel Tejada to a minor league contract. |
| Sep 12, 2013 | Signed as free agent | Norberto Obeso | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 2B Norberto Obeso to a minor league contract. |
| Sep 11, 2013 | Trade | Brendan Ryan | Seattle Mariners | New York Yankees | Seattle Mariners traded SS Brendan Ryan to New York Yankees for cash. |
| Sep 10, 2013 | Signed as free agent | Mike Zagurski | — | New York Yankees | New York Yankees signed free agent Mike Zagurski. |
| Sep 10, 2013 | Signed as free agent | Oliver Pascual | — | New York Mets | New York Mets signed free agent SS Oliver Pascual to a minor league contract. |
| Sep 9, 2013 | Signed as free agent | José Quijada | — | Miami Marlins | Miami Marlins signed free agent LHP Jose Quijada to a minor league contract. |
| Sep 8, 2013 | Signed as free agent | Jesus Arroyo | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Jesus Arroyo to a minor league contract. |
| Sep 7, 2013 | Signed as free agent | Ofelky Peralta | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Ofelky Peralta to a minor league contract. |
| Sep 7, 2013 | Signed as free agent | Leisman Acosta | — | Miami Marlins | Miami Marlins signed free agent 2B Leisman Acosta to a minor league contract. |
| Sep 6, 2013 | Signed as free agent | Luis Martinez | — | Minnesota Twins | Minnesota Twins signed free agent OF Luis Martinez to a minor league contract. |
| Sep 6, 2013 | Signed as free agent | Jermaine Palacios | — | Minnesota Twins | Minnesota Twins signed free agent SS Jermaine Palacios to a minor league contract. |
| Sep 6, 2013 | Signed as free agent | Carlos Pizzolato | — | Houston Astros | Houston Astros signed free agent RHP Carlos Pizzolato to a minor league contract. |
| Sep 5, 2013 | Signed as free agent | Alejandro Requena | — | Colorado Rockies | Colorado Rockies signed free agent RHP Alejandro Requena to a minor league contract. |
| Sep 4, 2013 | Released | Kensuke Tanaka | — | San Francisco Giants | San Francisco Giants released LF Kensuke Tanaka. |
| Sep 4, 2013 | Signed as free agent | Rafael Encarnacion | — | New York Mets | New York Mets signed free agent P Rafael Encarnacion to a minor league contract. |
| Sep 4, 2013 | Signed as free agent | Hanser Ortiz | — | New York Mets | New York Mets signed free agent C Hanser Ortiz to a minor league contract. |
| Sep 3, 2013 | Trade | Matt Pagnozzi | Atlanta Braves | Houston Astros | Atlanta Braves traded C Matt Pagnozzi to Houston Astros. |
| Sep 3, 2013 | Released | Luke Montz | — | Athletics | Oakland Athletics released DH Luke Montz. |
| Sep 3, 2013 | Signed as free agent | Alexis Peralta | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Alexis Peralta to a minor league contract. |
| Sep 3, 2013 | Signed as free agent | Gilbert Marrero | — | Tampa Bay Rays | Tampa Bay Rays signed free agent OF Gilbert Marrero to a minor league contract. |
| Sep 2, 2013 | Signed as free agent | Aaron Harang | — | New York Mets | New York Mets signed free agent RHP Aaron Harang to a minor league contract. |
| Sep 1, 2013 | Trade | Michael Young | Philadelphia Phillies | Los Angeles Dodgers | Philadelphia Phillies traded 3B Michael Young to Los Angeles Dodgers for LHP Rob Rasmussen. |
| Sep 1, 2013 | Released | Justin Miller | — | Texas Rangers | Texas Rangers released RHP Justin Miller. |
| Sep 1, 2013 | Trade | Rusty Ryal | Los Angeles Dodgers | Los Angeles Angels | Los Angeles Dodgers traded 1B Rusty Ryal to Los Angeles Angels. |
| Sep 1, 2013 | Trade | Michael Blazek | St. Louis Cardinals | Milwaukee Brewers | St. Louis Cardinals traded RHP Michael Blazek to Milwaukee Brewers. |
| Sep 1, 2013 | Signed as free agent | Maik Ehmcke | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Maik Ehmcke to a minor league contract. |
| Sep 1, 2013 | Signed as free agent | Bryan Philips | — | Atlanta Braves | Atlanta Braves signed free agent 2B Bryan Philips to a minor league contract. |
| Aug 31, 2013 | Trade | Justin Morneau | Minnesota Twins | Pittsburgh Pirates | Minnesota Twins traded 1B Justin Morneau to Pittsburgh Pirates for Player To Be Named Later and CF Alex Presley. |
| Aug 31, 2013 | Signed as free agent | Cory Wade | — | New York Mets | New York Mets signed free agent RHP Cory Wade to a minor league contract. |
| Aug 31, 2013 | Trade | Nefi Ogando | Boston Red Sox | Philadelphia Phillies | Philadelphia Phillies traded SS John McDonald to Boston Red Sox for RHP Nefi Ogando. |
| Aug 31, 2013 | Released | Justin Freeman | — | Cincinnati Reds | Cincinnati Reds released RHP Justin Freeman. |
| Aug 31, 2013 | Signed as free agent | Juan Garcia | — | Cleveland Guardians | Cleveland Indians signed free agent OF Juan Garcia to a minor league contract. |
| Aug 30, 2013 | Trade | John Axford | Milwaukee Brewers | St. Louis Cardinals | Milwaukee Brewers traded RHP John Axford to St. Louis Cardinals for Player To Be Named Later. |
| Aug 30, 2013 | Trade | Jason Kubel | Arizona Diamondbacks | Cleveland Guardians | Arizona Diamondbacks traded LF Jason Kubel to Cleveland Indians for RHP Matt Langwell. |
| Aug 30, 2013 | Signed as free agent | Kelly Shoppach | — | Cleveland Guardians | Cleveland Indians signed free agent C Kelly Shoppach to a minor league contract. |
| Aug 30, 2013 | Trade | Xavier Avery | Baltimore Orioles | Seattle Mariners | Baltimore Orioles traded LF Xavier Avery to Seattle Mariners for LF Michael Morse. |
| Aug 30, 2013 | Signed as free agent | Miguel Alfredo Gonzalez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Miguel Alfredo Gonzalez. |
| Aug 30, 2013 | Signed as free agent | Dan Johnson | — | Baltimore Orioles | Baltimore Orioles signed free agent 1B Dan Johnson to a minor league contract. |
| Aug 30, 2013 | Signed as free agent | Edinson Volquez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Edinson Volquez. |
| Aug 30, 2013 | Released | Aaron Harang | — | Seattle Mariners | Seattle Mariners released RHP Aaron Harang. |
| Aug 30, 2013 | Signed as free agent | Freddy Guzman | — | Tampa Bay Rays | Tampa Bay Rays signed free agent CF Freddy Guzman to a minor league contract. |
| Aug 30, 2013 | Signed as free agent | Juan Pena | — | Colorado Rockies | Colorado Rockies signed free agent RHP Juan Pena to a minor league contract. |
| Aug 29, 2013 | Released | Brett Myers | — | Cleveland Guardians | Cleveland Indians released RHP Brett Myers. |
| Aug 29, 2013 | Trade | Vic Black | Pittsburgh Pirates | New York Mets | Pittsburgh Pirates traded RHP Vic Black to New York Mets. |
| Aug 29, 2013 | Signed as free agent | Luis Encarnacion | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 3B Luis Encarnacion to a minor league contract. |
| Aug 28, 2013 | Released | Tim Wood | — | Minnesota Twins | Minnesota Twins released RHP Tim Wood. |
| Aug 28, 2013 | Signed as free agent | Brian Compton | — | Toronto Blue Jays | Toronto Blue Jays signed free agent C Brian Compton to a minor league contract. |
| Aug 28, 2013 | Signed as free agent | Maiker Feliz | — | Chicago White Sox | Chicago White Sox signed free agent 3B Maiker Feliz to a minor league contract. |
| Aug 28, 2013 | Signed as free agent | Cesar Diaz | — | New York Yankees | New York Yankees signed free agent CF Cesar Diaz to a minor league contract. |
| Aug 27, 2013 | Trade | John Buck | New York Mets | Pittsburgh Pirates | New York Mets traded C John Buck and RF Marlon Byrd to Pittsburgh Pirates for 2B Dilson Herrera. |
| Aug 27, 2013 | Trade | Quintin Berry | Kansas City Royals | Boston Red Sox | Kansas City Royals traded LF Quintin Berry to Boston Red Sox for RHP Clayton Mortensen. |
| Aug 27, 2013 | Signed as free agent | Carlos Pena | — | Kansas City Royals | Kansas City Royals signed free agent 1B Carlos Pena to a minor league contract. |
| Aug 27, 2013 | Signed as free agent | Roemon Fields | — | Toronto Blue Jays | Toronto Blue Jays signed free agent CF Roemon Fields to a minor league contract. |
| Aug 26, 2013 | Released | Casey Kotchman | — | Miami Marlins | Miami Marlins released 1B Casey Kotchman. |
| Aug 26, 2013 | Released | Edinson Volquez | — | San Diego Padres | San Diego Padres released RHP Edinson Volquez. |
| Aug 26, 2013 | Signed as free agent | Darwinzon Hernández | — | Boston Red Sox | Boston Red Sox signed free agent LHP Darwinzon Hernandez to a minor league contract. |
| Aug 26, 2013 | Signed as free agent | Rafael Toribio | — | Boston Red Sox | Boston Red Sox signed free agent SS Rafael Toribio to a minor league contract. |
| Aug 26, 2013 | Signed as free agent | Tom de Blok | — | Seattle Mariners | Seattle Mariners signed free agent RHP Tom de Blok to a minor league contract. |
| Aug 26, 2013 | Signed as free agent | Ulises Perez | — | Seattle Mariners | Seattle Mariners signed free agent RHP Ulises Perez to a minor league contract. |
| Aug 24, 2013 | Signed as free agent | Blake Gailen | — | Toronto Blue Jays | Toronto Blue Jays signed free agent OF Blake Gailen to a minor league contract. |
| Aug 24, 2013 | Signed as free agent | Max Gooding | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Maximiliano Gooding to a minor league contract. |
| Aug 24, 2013 | Signed as free agent | Ricardo Cespedes | — | New York Mets | New York Mets signed free agent OF Ricardo Cespedes to a minor league contract. |
| Aug 23, 2013 | Trade | Dakota Bacus | Athletics | Washington Nationals | Washington Nationals traded C Kurt Suzuki to Oakland Athletics for RHP Dakota Bacus. |
| Aug 23, 2013 | Trade | David DeJesus | Washington Nationals | Tampa Bay Rays | Washington Nationals traded LF David DeJesus to Tampa Bay Rays. |
| Aug 23, 2013 | Trade | Neil Ramírez | Texas Rangers | Chicago Cubs | Texas Rangers traded RHP Neil Ramirez to Chicago Cubs. |
| Aug 23, 2013 | Signed as free agent | Austin Schuetzle | — | Seattle Mariners | Seattle Mariners signed free agent OF Austin Schuetzle to a minor league contract. |
| Aug 23, 2013 | Signed as free agent | Yelfri Munoz | — | Texas Rangers | Texas Rangers signed free agent RHP Yelfri Munoz to a minor league contract. |
| Aug 22, 2013 | Signed as free agent | Ryan Langerhans | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LF Ryan Langerhans to a minor league contract. |
| Aug 22, 2013 | Signed as free agent | Daisuke Matsuzaka | — | New York Mets | New York Mets signed free agent RHP Daisuke Matsuzaka. |
| Aug 22, 2013 | Signed as free agent | Delmon Young | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RF Delmon Young to a minor league contract. |
| Aug 22, 2013 | Signed as free agent | David Bergin | — | Colorado Rockies | Colorado Rockies signed free agent 1B David Bergin to a minor league contract. |
| Aug 22, 2013 | Signed as free agent | Yunior Lar | — | Atlanta Braves | Atlanta Braves signed free agent 1B Yunior Lar to a minor league contract. |
| Aug 21, 2013 | Signed as free agent | Roger Bernadina | — | Philadelphia Phillies | Philadelphia Phillies signed free agent Roger Bernadina. |
| Aug 21, 2013 | Signed as free agent | Brendan Harris | — | Texas Rangers | Texas Rangers signed free agent SS Brendan Harris to a minor league contract. |
| Aug 21, 2013 | Released | Jeff Francoeur | — | San Francisco Giants | San Francisco Giants released RF Jeff Francoeur. |
| Aug 21, 2013 | Signed as free agent | Mitch Talbot | — | New York Mets | New York Mets signed free agent RHP Mitch Talbot to a minor league contract. |
| Aug 21, 2013 | Signed as free agent | Adam Moore | — | Kansas City Royals | Kansas City Royals signed free agent C Adam Moore to a minor league contract. |
| Aug 21, 2013 | Signed as free agent | Samuel Miranda | — | Boston Red Sox | Boston Red Sox signed free agent C Samuel Miranda to a minor league contract. |
| Aug 21, 2013 | Signed as free agent | Dennis Ortega | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C Dennis Ortega to a minor league contract. |
| Aug 20, 2013 | Signed as free agent | Britt Robertshaw | — | Texas Rangers | Texas Rangers signed free agent RHP Britt Robertshaw to a minor league contract. |
| Aug 19, 2013 | Released | Elliot Johnson | — | Kansas City Royals | Kansas City Royals released Elliot Johnson. |
| Aug 19, 2013 | Trade | David DeJesus | Chicago Cubs | Washington Nationals | Chicago Cubs traded CF David DeJesus to Washington Nationals. |
| Aug 19, 2013 | Released | Roger Bernadina | — | Washington Nationals | Washington Nationals released RF Roger Bernadina. |
| Aug 19, 2013 | Signed as free agent | Brad Boyer | — | Minnesota Twins | Minnesota Twins signed free agent 3B Brad Boyer to a minor league contract. |
| Aug 19, 2013 | Signed as free agent | Starling Duval | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Starling Duval to a minor league contract. |
| Aug 18, 2013 | Trade | Doug Mathis | Miami Marlins | Pittsburgh Pirates | Miami Marlins traded RHP Doug Mathis to Pittsburgh Pirates. |
| Aug 18, 2013 | Trade | Leo Heras | Diablos Rojos del Mexico | Houston Astros | Diablos Rojos del Mexico traded 1B Japhet Amador and OF Leo Heras to Houston Astros. |
| Aug 17, 2013 | Signed as free agent | Tyler Greene | — | Atlanta Braves | Atlanta Braves signed free agent 2B Tyler Greene to a minor league contract. |
| Aug 17, 2013 | Released | Blake DeWitt | — | Atlanta Braves | Atlanta Braves released 3B Blake DeWitt. |
| Aug 17, 2013 | Signed as free agent | Carlos Fisher | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Carlos Fisher to a minor league contract. |
| Aug 17, 2013 | Signed as free agent | Mike Zagurski | — | Athletics | Oakland Athletics signed free agent LHP Mike Zagurski to a minor league contract. |
| Aug 17, 2013 | Released | Luis Alfonso Cruz | — | New York Yankees | New York Yankees released 3B Luis Alfonso Cruz. |
| Aug 17, 2013 | Signed as free agent | Fernando Diaz | — | New York Yankees | New York Yankees signed free agent OF Fernando Diaz to a minor league contract. |
| Aug 17, 2013 | Signed as free agent | Andretty Cordero | — | Texas Rangers | Texas Rangers signed free agent SS Andretty Cordero to a minor league contract. |
| Aug 17, 2013 | Signed as free agent | Yohel Pozo | — | Texas Rangers | Texas Rangers signed free agent C Yohel Pozo to a minor league contract. |
| Aug 16, 2013 | Signed as free agent | Mark Reynolds | — | New York Yankees | New York Yankees signed free agent 1B Mark Reynolds. |
| Aug 16, 2013 | Signed as free agent | Kyle Farnsworth | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Kyle Farnsworth to a minor league contract. |
| Aug 16, 2013 | Signed as free agent | Wander Beras | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Wander Beras to a minor league contract. |
| Aug 16, 2013 | Signed as free agent | Clayvon Sambola | — | Atlanta Braves | Atlanta Braves signed free agent RHP Clayvon Sambola to a minor league contract. |
| Aug 15, 2013 | Signed as free agent | Jared Mortensen | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Jared Mortensen to a minor league contract. |
| Aug 15, 2013 | Signed | Brad Schreiber | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Brad Schreiber. |
| Aug 15, 2013 | Signed as free agent | Alex Sanchez | — | Chicago Cubs | Chicago Cubs signed free agent IF Alex Sanchez to a minor league contract. |
| Aug 15, 2013 | Signed as free agent | Anderson Franco | — | Washington Nationals | Washington Nationals signed free agent 3B Anderson Franco to a minor league contract. |
| Aug 14, 2013 | Signed as free agent | Leandro Linares | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Leandro Linares to a minor league contract. |
| Aug 14, 2013 | Signed as free agent | Joe Van Meter | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Joe Van Meter to a minor league contract. |
| Aug 14, 2013 | Trade | Emilio Bonifácio | Toronto Blue Jays | Kansas City Royals | Toronto Blue Jays traded 2B Emilio Bonifacio to Kansas City Royals. |
| Aug 14, 2013 | Trade | Travis Blackley | Houston Astros | Texas Rangers | Houston Astros traded LHP Travis Blackley to Texas Rangers. |
| Aug 14, 2013 | Released | Delmon Young | — | Philadelphia Phillies | Philadelphia Phillies released RF Delmon Young. |
| Aug 14, 2013 | Signed as free agent | Juan Matheus | — | Washington Nationals | Washington Nationals signed free agent RHP Juan Matheus to a minor league contract. |
| Aug 13, 2013 | Signed as free agent | David Cooper | — | Cleveland Guardians | Cleveland Indians signed free agent 1B David Cooper to a minor league contract. |
| Aug 13, 2013 | Trade | Miguel Sulbaran | Los Angeles Dodgers | Minnesota Twins | Los Angeles Dodgers traded LHP Miguel Sulbaran to Minnesota Twins. |
| Aug 13, 2013 | Signed as free agent | Carlos Salazar | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Carlos Salazar to a minor league contract. |
| Aug 12, 2013 | Trade | Jamey Carroll | Minnesota Twins | Kansas City Royals | Minnesota Twins traded 2B Jamey Carroll to Kansas City Royals. |
| Aug 12, 2013 | Released | Mark Reynolds | — | Cleveland Guardians | Cleveland Indians released 3B Mark Reynolds. |
| Aug 12, 2013 | Signed as free agent | Drew Carpenter | — | Athletics | Oakland Athletics signed free agent RHP Drew Carpenter to a minor league contract. |
| Aug 12, 2013 | Signed as free agent | Kelly Shoppach | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Kelly Shoppach to a minor league contract. |
| Aug 12, 2013 | Released | Laynce Nix | — | Philadelphia Phillies | Philadelphia Phillies released RF Laynce Nix. |
| Aug 12, 2013 | Signed as free agent | Zach Duke | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Zach Duke to a minor league contract. |
| Aug 12, 2013 | Signed as free agent | Jordan Elliott | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Jordan Elliott to a minor league contract. |
| Aug 12, 2013 | Signed as free agent | Cam Booser | — | Minnesota Twins | Minnesota Twins signed free agent LHP Cameron Booser to a minor league contract. |
| Aug 12, 2013 | Signed | Geoff Perrott | — | Washington Nationals | Washington Nationals signed C Geoffrey Perrott. |
| Aug 12, 2013 | Signed as free agent | Reydel Medina | — | Cincinnati Reds | Cincinnati Reds signed free agent CF Reydel Medina to a minor league contract. |
| Aug 12, 2013 | Signed as free agent | Franklin Vargas | — | Cincinnati Reds | Cincinnati Reds signed free agent SS Franklin Vargas to a minor league contract. |
| Aug 12, 2013 | Released | Leudys Baez | — | Washington Nationals | Washington Nationals released SS Leudys Baez. |
| Aug 11, 2013 | Signed as free agent | Tommy Manzella | — | Chicago White Sox | Chicago White Sox signed free agent 3B Tommy Manzella to a minor league contract. |
| Aug 11, 2013 | Signed as free agent | Gerardo Reyes | — | Tampa Bay Rays | Tampa Bay Rays signed free agent Gerardo Reyes. |
| Aug 10, 2013 | Released | Kyle Farnsworth | — | Tampa Bay Rays | Tampa Bay Rays released RHP Kyle Farnsworth. |
| Aug 10, 2013 | Signed as free agent | Alex San Juan | — | Colorado Rockies | Colorado Rockies signed free agent C Alex San Juan to a minor league contract. |
| Aug 10, 2013 | Signed as free agent | Chris Motta | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Chris Motta to a minor league contract. |
| Aug 10, 2013 | Signed as free agent | Argemiro Estremor | — | Atlanta Braves | Atlanta Braves signed free agent RHP Argemiro Estremor to a minor league contract. |
| Aug 9, 2013 | Trade | Leury García | Texas Rangers | Chicago White Sox | Chicago White Sox traded RF Alex Rios to Texas Rangers for 2B Leury Garcia. |
| Aug 9, 2013 | Signed as free agent | Rafael Devers | — | Boston Red Sox | Boston Red Sox signed free agent 3B Rafael Devers to a minor league contract. |
| Aug 9, 2013 | 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. |
| Aug 9, 2013 | Signed as free agent | Jhonathan Díaz | — | Boston Red Sox | Boston Red Sox signed free agent LHP Jhonathan Diaz to a minor league contract. |
| Aug 9, 2013 | Signed as free agent | Yoan Aybar | — | Boston Red Sox | Boston Red Sox signed free agent CF Yoan Aybar to a minor league contract. |
| Aug 9, 2013 | Released | Josh Sullivan | — | Colorado Rockies | Colorado Rockies released RHP Josh Sullivan. |
| Aug 9, 2013 | Signed as free agent | Kalian Sams | — | Texas Rangers | Texas Rangers signed free agent OF Kalian Sams to a minor league contract. |
| Aug 9, 2013 | Signed as free agent | Tony Bryant | — | Colorado Rockies | Colorado Rockies signed free agent RHP Anthony Bryant to a minor league contract. |
| Aug 8, 2013 | Released | Adam Moore | — | Kansas City Royals | Kansas City Royals released C Adam Moore. |
| Aug 8, 2013 | Signed as free agent | Bridger Hunt | — | San Diego Padres | San Diego Padres signed free agent OF Bridger Hunt to a minor league contract. |
| Aug 8, 2013 | Signed as free agent | Ryan Demmin | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Ryan Demmin to a minor league contract. |
| Aug 8, 2013 | Signed as free agent | Matt Alvarez | — | Kansas City Royals | Kansas City Royals signed free agent RHP Matt Alvarez to a minor league contract. |
| Aug 8, 2013 | Signed as free agent | Jorge Gil | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Jorge Gil to a minor league contract. |
| Aug 8, 2013 | Signed as free agent | Alfredo Gonzalez | — | Baltimore Orioles | Baltimore Orioles signed free agent C Alfredo Gonzalez to a minor league contract. |
| Aug 8, 2013 | Signed as free agent | Alilzon Rodriguez | — | San Francisco Giants | San Francisco Giants signed free agent C Alilzon Rodriguez to a minor league contract. |
| Aug 7, 2013 | Released | Michael Schwimer | — | Toronto Blue Jays | Toronto Blue Jays released RHP Michael Schwimer. |
| Aug 7, 2013 | Signed as free agent | Dontrelle Willis | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Dontrelle Willis to a minor league contract. |
| Aug 7, 2013 | Signed | Brett Thomas | — | Seattle Mariners | Seattle Mariners signed OF Brett Thomas. |
| Aug 7, 2013 | Signed as free agent | Carlos Guzman | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Carlos Guzman to a minor league contract. |
| Aug 7, 2013 | Signed as free agent | Mauricio Atizol | — | Miami Marlins | Miami Marlins signed free agent LHP Mauricio Atizol to a minor league contract. |
| Aug 7, 2013 | Signed as free agent | Jeremias Portorreal | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RF Jeremias Portorreal to a minor league contract. |
| Aug 6, 2013 | Signed as free agent | Danny Perales | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Danny Perales to a minor league contract. |
| Aug 6, 2013 | Released | Jason Bay | — | Seattle Mariners | Seattle Mariners released RF Jason Bay. |
| Aug 6, 2013 | Signed as free agent | Nick Ammirati | — | Seattle Mariners | Seattle Mariners signed free agent C Nick Ammirati to a minor league contract. |
| Aug 6, 2013 | Signed as free agent | Dan Kemp | — | Seattle Mariners | Seattle Mariners signed free agent SS Dan Kemp to a minor league contract. |
| Aug 6, 2013 | Signed as free agent | Drew Rucinski | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Drew Rucinski to a minor league contract. |
| Aug 6, 2013 | Signed as free agent | Francisco German | — | Detroit Tigers | Detroit Tigers signed free agent RHP Francisco German to a minor league contract. |
| Aug 6, 2013 | Signed as free agent | Elia Soler | — | Kansas City Royals | Kansas City Royals signed free agent SS Elia Soler to a minor league contract. |
| Aug 6, 2013 | Signed as free agent | Alexander Alvarez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Alexander Alvarez to a minor league contract. |
| Aug 6, 2013 | Signed as free agent | Randhi Balcazar | — | Tampa Bay Rays | Tampa Bay Rays signed free agent OF Randhi Balcazar to a minor league contract. |
| Aug 6, 2013 | Signed as free agent | Eleardo Cabrera | — | Tampa Bay Rays | Tampa Bay Rays signed free agent OF Eleardo Cabrera to a minor league contract. |
| Aug 6, 2013 | Signed as free agent | Miguel Da Silva | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Miguel Da Silva to a minor league contract. |
| Aug 6, 2013 | Signed as free agent | Pascual Fiorello | — | Tampa Bay Rays | Tampa Bay Rays signed free agent SS Pascual Fiorello to a minor league contract. |
| Aug 6, 2013 | Signed as free agent | Juan Rodriguez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent 3B Juan Rodriguez to a minor league contract. |
| Aug 6, 2013 | Signed as free agent | Luis Serrano | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Luis Serrano to a minor league contract. |
| Aug 5, 2013 | Released | Ryan Madson | — | Los Angeles Angels | Los Angeles Angels released RHP Ryan Madson. |
| Aug 5, 2013 | Signed as free agent | Andy Marte | — | Los Angeles Angels | Los Angeles Angels signed free agent 3B Andy Marte to a minor league contract. |
| Aug 5, 2013 | Signed as free agent | Edwin Carl | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Edwin Carl to a minor league contract. |
| Aug 5, 2013 | Signed as free agent | Stefen Henderson | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Stefen Henderson to a minor league contract. |
| Aug 4, 2013 | Released | Brad Hawpe | — | Los Angeles Angels | Los Angeles Angels released RF Brad Hawpe. |
| Aug 4, 2013 | Signed as free agent | Jason Urquidez | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Jason Urquidez to a minor league contract. |
| Aug 4, 2013 | Released | Duane Below | — | Miami Marlins | Miami Marlins released LHP Duane Below. |
| Aug 3, 2013 | Released | Dewayne Wise | — | Chicago White Sox | Chicago White Sox released CF Dewayne Wise. |
| Aug 3, 2013 | Signed as free agent | Taylor Wrenn | — | Texas Rangers | Texas Rangers signed free agent 2B Taylor Wrenn to a minor league contract. |
| Aug 3, 2013 | Signed as free agent | Jose Martinez | — | Minnesota Twins | Minnesota Twins signed free agent RHP Jose Martinez to a minor league contract. |
| Aug 2, 2013 | Released | Ted Lilly | — | Los Angeles Dodgers | Los Angeles Dodgers released LHP Ted Lilly. |
| Aug 2, 2013 | Signed as free agent | Byron Guerra | — | Baltimore Orioles | Baltimore Orioles signed free agent 3B Byron Guerra to a minor league contract. |
| Aug 2, 2013 | Signed as free agent | Julio Pina | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Julio Pina to a minor league contract. |
| Aug 2, 2013 | Signed as free agent | Jose Morel | — | Chicago Cubs | Chicago Cubs signed free agent RHP Jose Morel to a minor league contract. |
| Aug 2, 2013 | Signed as free agent | Felix Suarez | — | San Diego Padres | San Diego Padres signed free agent SS Felix Suarez to a minor league contract. |
| Aug 2, 2013 | Signed as free agent | Jervenski Johnson | — | Boston Red Sox | Boston Red Sox signed free agent OF Jervenski Johnson to a minor league contract. |
| Aug 1, 2013 | Trade | Robert Andino | Seattle Mariners | Pittsburgh Pirates | Seattle Mariners traded 2B Robert Andino to Pittsburgh Pirates. |
| Aug 1, 2013 | Signed as free agent | Ronny Cedeno | — | San Diego Padres | San Diego Padres signed free agent SS Ronny Cedeno to a minor league contract. |
| Aug 1, 2013 | Signed as free agent | Jaron Long | — | New York Yankees | New York Yankees signed free agent RHP Jaron Long to a minor league contract. |
| Aug 1, 2013 | Signed as free agent | Nicanor Alvarado | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Nicanor Alvarado to a minor league contract. |
| Aug 1, 2013 | Signed as free agent | Manuel De Los Santos | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Manuel De Los Santos to a minor league contract. |
| Aug 1, 2013 | Signed as free agent | Henry Feliz | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Henry Feliz to a minor league contract. |
| Aug 1, 2013 | Signed as free agent | Barry Jhonson | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Barry Jhonson to a minor league contract. |
| Aug 1, 2013 | Signed as free agent | Julin Jimenez | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Julin Jimenez to a minor league contract. |
| Aug 1, 2013 | Signed as free agent | Eloy Jiménez | — | Chicago Cubs | Chicago Cubs signed free agent OF Eloy Jimenez to a minor league contract. |
| Aug 1, 2013 | Signed as free agent | Junior Pedie | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Junior Pedie to a minor league contract. |
| Aug 1, 2013 | Signed as free agent | Leonardo Molina | — | New York Yankees | New York Yankees signed free agent OF Leonardo Molina to a minor league contract. |
| Jul 31, 2013 | Trade | Grant Green | Athletics | Los Angeles Angels | Los Angeles Angels traded 1B Alberto Callaspo to Oakland Athletics for 2B Grant Green. |
| Jul 31, 2013 | Trade | Jake Peavy | Chicago White Sox | Boston Red Sox | Chicago White Sox traded RHP Jake Peavy to Boston Red Sox for RHP Francellis Montas, SS Cleuluis Rondon and RHP Jeffrey Wendelken. |
| Jul 31, 2013 | Trade | Avisaíl García | Detroit Tigers | Boston Red Sox | Detroit Tigers traded RF Avisail Garcia and RHP Brayan Villarreal to Boston Red Sox for SS Jose Iglesias. |
| Jul 31, 2013 | Trade | Avisaíl García | Boston Red Sox | Chicago White Sox | Boston Red Sox traded RF Avisail Garcia to Chicago White Sox. |
| Jul 31, 2013 | Trade | Ian Kennedy | Arizona Diamondbacks | San Diego Padres | Arizona Diamondbacks traded RHP Ian Kennedy to San Diego Padres for LHP Joe Thatcher and RHP Matt Stites. |
| Jul 31, 2013 | Trade | Justin Maxwell | Houston Astros | Kansas City Royals | Houston Astros traded CF Justin Maxwell to Kansas City Royals for RHP Kyle Smith. |
| Jul 31, 2013 | Trade | Josh Hader | Baltimore Orioles | Houston Astros | Houston Astros traded RHP Bud Norris to Baltimore Orioles for LF L.J. Hoes and LHP Josh Hader. |
| Jul 31, 2013 | Trade | Drew Butera | Minnesota Twins | Los Angeles Dodgers | Minnesota Twins traded C Drew Butera to Los Angeles Dodgers. |
| Jul 31, 2013 | Released | Carlos Pena | — | Houston Astros | Houston Astros released 1B Carlos Pena. |
| Jul 31, 2013 | Signed as free agent | Fabian Williamson | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Fabian Williamson to a minor league contract. |
| Jul 31, 2013 | Signed as free agent | Juan Heredia | — | Miami Marlins | Miami Marlins signed free agent SS Juan Heredia to a minor league contract. |
| Jul 31, 2013 | Signed as free agent | Jose Solano | — | Miami Marlins | Miami Marlins signed free agent RF Jose Solano to a minor league contract. |
| Jul 31, 2013 | Signed as free agent | Anderson Jimenez | — | Colorado Rockies | Colorado Rockies signed free agent 3B Anderson Jimenez to a minor league contract. |
| Jul 31, 2013 | Signed as free agent | Luis Alcala | — | Miami Marlins | Miami Marlins signed free agent SS Luis Alcala to a minor league contract. |
| Jul 30, 2013 | Trade | Juan Herrera | Cleveland Guardians | St. Louis Cardinals | St. Louis Cardinals traded LHP Marc Rzepczynski to Cleveland Indians for 2B Juan Herrera. |
| Jul 30, 2013 | Signed as free agent | Brian Wilson | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Brian Wilson. |
| Jul 30, 2013 | Released | Brandon Inge | — | Pittsburgh Pirates | Pittsburgh Pirates released 3B Brandon Inge. |
| Jul 30, 2013 | Signed as free agent | Greg Golson | — | Atlanta Braves | Atlanta Braves signed free agent OF Greg Golson to a minor league contract. |
| Jul 30, 2013 | Signed as free agent | Nik Nowottnick | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Nik Nowottnick to a minor league contract. |
| Jul 30, 2013 | Signed as free agent | Felix Nunez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Felix Nunez to a minor league contract. |
| Jul 30, 2013 | Signed as free agent | Brayan Ulloa | — | Miami Marlins | Miami Marlins signed free agent LHP Brayan Ulloa to a minor league contract. |
| Jul 30, 2013 | Signed | Ivory Thomas | — | Minnesota Twins | Minnesota Twins signed OF Ivory Thomas. |
| Jul 29, 2013 | Trade | Danry Vasquez | Detroit Tigers | Houston Astros | Houston Astros traded RHP Jose Veras to Detroit Tigers for OF Danry Vasquez. |
| Jul 29, 2013 | Trade | Cory Rasmus | Atlanta Braves | Los Angeles Angels | Los Angeles Angels traded LHP Scott Downs to Atlanta Braves for RHP Cory Rasmus. |
| Jul 29, 2013 | Trade | Jesse Crain | Chicago White Sox | Tampa Bay Rays | Chicago White Sox traded RHP Jesse Crain to Tampa Bay Rays. |
| Jul 29, 2013 | Signed as free agent | Brody Greer | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Brody Greer to a minor league contract. |
| Jul 29, 2013 | Signed as free agent | Hunter Strickland | — | San Francisco Giants | San Francisco Giants signed free agent RHP Hunter Strickland to a minor league contract. |
| Jul 29, 2013 | Signed as free agent | Valentin Martinez | — | Cincinnati Reds | Cincinnati Reds signed free agent C Valentin Martinez to a minor league contract. |
| Jul 29, 2013 | Signed as free agent | Victor Martinez | — | Cincinnati Reds | Cincinnati Reds signed free agent SS Victor Martinez to a minor league contract. |
| Jul 28, 2013 | Signed as free agent | Brady Steiger | — | New York Yankees | New York Yankees signed free agent 3B Brady Steiger to a minor league contract. |
| Jul 28, 2013 | Signed as free agent | Justin Hess | — | Houston Astros | Houston Astros signed free agent RHP Justin Hess to a minor league contract. |
| Jul 28, 2013 | Signed as free agent | Jesus Alastre | — | Philadelphia Phillies | Philadelphia Phillies signed free agent OF Jesus Alastre to a minor league contract. |
| Jul 27, 2013 | Trade | Julio Concepcion | New York Mets | Los Angeles Angels | New York Mets traded RF Julio Concepcion to Los Angeles Angels. |
| Jul 27, 2013 | Released | Ronny Cedeno | — | Houston Astros | Houston Astros released SS Ronny Cedeno. |
| Jul 27, 2013 | Signed as free agent | Tyler Gauthier | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Tyler Gauthier to a minor league contract. |
| Jul 27, 2013 | Signed as free agent | Mike Jeffreys | — | Kansas City Royals | Kansas City Royals signed free agent RHP Mike Jeffreys to a minor league contract. |
| Jul 27, 2013 | Signed as free agent | Franklin Torres | — | Los Angeles Angels | Los Angeles Angels signed free agent SS Franklin Torres to a minor league contract. |
| Jul 26, 2013 | Trade | Corey Black | New York Yankees | Chicago Cubs | Chicago Cubs traded cash and LF Alfonso Soriano to New York Yankees for RHP Corey Black. |
| Jul 26, 2013 | Trade | Guillermo Moscoso | Chicago Cubs | San Francisco Giants | Chicago Cubs traded RHP Guillermo Moscoso to San Francisco Giants. |
| Jul 26, 2013 | Signed as free agent | Jair Jurrjens | — | Detroit Tigers | Detroit Tigers signed free agent RHP Jair Jurrjens to a minor league contract. |
| Jul 26, 2013 | Signed as free agent | Humberto Quintero | — | Seattle Mariners | Seattle Mariners signed free agent C Humberto Quintero. |
| Jul 26, 2013 | Signed as free agent | Marty Herum | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 3B Marty Herum to a minor league contract. |
| Jul 26, 2013 | Signed as free agent | Tim Sexton | — | San Diego Padres | San Diego Padres signed free agent RHP Tim Sexton to a minor league contract. |
| Jul 26, 2013 | Signed as free agent | Jose Laguna | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Jose Laguna to a minor league contract. |
| Jul 26, 2013 | Signed as free agent | Bryan Lizardo | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 3B Bryan Lizardo to a minor league contract. |
| Jul 25, 2013 | Signed as free agent | Wilson Amador | — | Houston Astros | Houston Astros signed free agent SS Wilson Amador to a minor league contract. |
| Jul 25, 2013 | Signed as free agent | Brendan Harris | — | New York Yankees | New York Yankees signed free agent SS Brendan Harris to a minor league contract. |
| Jul 25, 2013 | Signed as free agent | Eugenio Velez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LF Eugenio Velez to a minor league contract. |
| Jul 25, 2013 | Signed as free agent | Jen-Ho Tseng | — | Chicago Cubs | Chicago Cubs signed free agent RHP Jen-Ho Tseng to a minor league contract. |
| Jul 25, 2013 | Signed as free agent | Yhoelnys Gonzalez | — | Athletics | Oakland Athletics signed free agent CF Yhoelnys Gonzalez to a minor league contract. |
| Jul 25, 2013 | Signed as free agent | Luis Rengel | — | Washington Nationals | Washington Nationals signed free agent SS Luis Rengel to a minor league contract. |
| Jul 24, 2013 | Signed as free agent | Dariel Álvarez | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Dariel Alvarez to a minor league contract. |
| Jul 24, 2013 | Released | Hunter Strickland | — | San Francisco Giants | San Francisco Giants released RHP Hunter Strickland. |
| Jul 24, 2013 | Signed as free agent | Tyler Sparger | — | Seattle Mariners | Seattle Mariners signed free agent RHP Tyler Sparger to a minor league contract. |
| Jul 24, 2013 | Signed as free agent | Javier Sanchez | — | Atlanta Braves | Atlanta Braves signed free agent RHP Javier Sanchez to a minor league contract. |
| Jul 24, 2013 | Signed as free agent | Argenis Diaz | — | Los Angeles Angels | Los Angeles Angels signed free agent CF Argenis Diaz to a minor league contract. |
| Jul 24, 2013 | Signed as free agent | Bryan Martelo | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RF Bryan Martelo to a minor league contract. |
| Jul 24, 2013 | Signed | Tyger Pederson | — | Los Angeles Dodgers | Los Angeles Dodgers signed 2B Tyger Pederson. |
| Jul 23, 2013 | Released | Shaun Marcum | — | New York Mets | New York Mets released RHP Shaun Marcum. |
| Jul 23, 2013 | Trade | Francisco Rodríguez | Milwaukee Brewers | Baltimore Orioles | Milwaukee Brewers traded RHP Francisco Rodriguez to Baltimore Orioles for 3B Nick Delmonico. |
| Jul 23, 2013 | Signed as free agent | Aaron Barbosa | — | Seattle Mariners | Seattle Mariners signed free agent OF Aaron Barbosa to a minor league contract. |
| Jul 23, 2013 | Signed as free agent | Bryce Morrow | — | San Diego Padres | San Diego Padres signed free agent RHP Bryce Morrow to a minor league contract. |
| Jul 23, 2013 | Signed as free agent | Sawyer Carroll | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RF Sawyer Carroll to a minor league contract. |
| Jul 23, 2013 | Signed as free agent | Dustin Molleken | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Dustin Molleken to a minor league contract. |
| Jul 23, 2013 | Signed as free agent | Jeremy Ovalle | — | Miami Marlins | Miami Marlins signed free agent RHP Jeremy Ovalle to a minor league contract. |
| Jul 23, 2013 | Signed as free agent | Jonathan Rodriguez | — | Miami Marlins | Miami Marlins signed free agent RHP Jonathan Rodriguez to a minor league contract. |
| Jul 22, 2013 | Trade | Matt Garza | Chicago Cubs | Texas Rangers | Chicago Cubs traded RHP Matt Garza to Texas Rangers for RHP C.J. Edwards, RHP Justin Grimm, 1B Mike Olt and Player To Be Named Later. |
| Jul 22, 2013 | Signed as free agent | Jason Lane | — | San Diego Padres | San Diego Padres signed free agent LHP Jason Lane to a minor league contract. |
| Jul 22, 2013 | Signed | Joseph Astacio | — | Tampa Bay Rays | Tampa Bay Rays signed SS Joseph Astacio. |
| Jul 22, 2013 | Signed as free agent | Al Yevoli | — | Chicago Cubs | Chicago Cubs signed free agent LHP Al Yevoli to a minor league contract. |
| Jul 22, 2013 | Signed | Rodrigo Benoit | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Rodrigo Benoit. |
| Jul 21, 2013 | Signed as free agent | Cyle Hankerd | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Cyle Hankerd to a minor league contract. |
| Jul 21, 2013 | Signed as free agent | Grant Monroe | — | Chicago White Sox | Chicago White Sox signed free agent RHP Grant Monroe to a minor league contract. |
| Jul 21, 2013 | Released | Chris Heston | — | San Francisco Giants | San Francisco Giants released RHP Chris Heston. |
| Jul 21, 2013 | Signed as free agent | Eric Yardley | — | San Diego Padres | San Diego Padres signed free agent RHP Eric Yardley to a minor league contract. |
| Jul 20, 2013 | Signed as free agent | Hildemaro Requena | — | Boston Red Sox | Boston Red Sox signed free agent RHP Hildemaro Requena to a minor league contract. |
| Jul 20, 2013 | Signed as free agent | Carlos Tovar | — | Boston Red Sox | Boston Red Sox signed free agent SS Carlos Tovar to a minor league contract. |
| Jul 20, 2013 | Signed as free agent | Eduardo Navas | — | New York Yankees | New York Yankees signed free agent C Eduardo Navas to a minor league contract. |
| Jul 19, 2013 | Signed as free agent | Travis Ishikawa | — | Chicago White Sox | Chicago White Sox signed free agent 1B Travis Ishikawa to a minor league contract. |
| Jul 19, 2013 | Signed as free agent | Jose Contreras | — | Boston Red Sox | Boston Red Sox signed free agent RHP Jose Contreras to a minor league contract. |
| Jul 19, 2013 | Signed as free agent | Brandon Lyon | — | Boston Red Sox | Boston Red Sox signed free agent RHP Brandon Lyon to a minor league contract. |
| Jul 19, 2013 | Released | Brennan Boesch | — | New York Yankees | New York Yankees released RF Brennan Boesch. |
| Jul 19, 2013 | Signed as free agent | Matt Reistetter | — | Washington Nationals | Washington Nationals signed free agent C Matt Reistetter to a minor league contract. |
| Jul 19, 2013 | Signed as free agent | Carlos Felix | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Carlos Felix to a minor league contract. |
| Jul 19, 2013 | Signed as free agent | Isael Soto | — | Miami Marlins | Miami Marlins signed free agent OF Isael Soto to a minor league contract. |
| Jul 19, 2013 | Signed as free agent | Steven Fuentes | — | Washington Nationals | Washington Nationals signed free agent RHP Steven Fuentes to a minor league contract. |
| Jul 18, 2013 | Signed | Scott Moore | — | San Diego Padres | San Diego Padres signed 3B Scott Moore. |
| Jul 18, 2013 | Signed as free agent | Jeremy Bonderman | — | Detroit Tigers | Detroit Tigers signed free agent RHP Jeremy Bonderman to a minor league contract. |
| Jul 18, 2013 | Signed as free agent | Henry Mabee | — | Chicago White Sox | Chicago White Sox signed free agent RHP Henry Mabee to a minor league contract. |
| Jul 18, 2013 | Signed as free agent | Luis González | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Luis Gonzalez to a minor league contract. |
| Jul 18, 2013 | Signed as free agent | Moises Perez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent SS Moises Perez to a minor league contract. |
| Jul 17, 2013 | Signed as free agent | Micah Gibbs | — | Kansas City Royals | Kansas City Royals signed free agent C Micah Gibbs to a minor league contract. |
| Jul 17, 2013 | Signed | Trevor Seidenberger | — | Milwaukee Brewers | Milwaukee Brewers signed Trevor Seidenberger. |
| Jul 17, 2013 | Signed as free agent | Shawn Camp | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Shawn Camp to a minor league contract. |
| Jul 17, 2013 | Signed as free agent | Tomas De Los Santos | — | Cincinnati Reds | Cincinnati Reds signed free agent OF Tomas De Los Santos to a minor league contract. |
| Jul 17, 2013 | Signed as free agent | Sucre Doval | — | Cincinnati Reds | Cincinnati Reds signed free agent OF Sucre Doval to a minor league contract. |
| Jul 17, 2013 | Signed as free agent | Alexander Figueredo | — | New York Yankees | New York Yankees signed free agent LHP Alexander Figueredo to a minor league contract. |
| Jul 17, 2013 | Signed as free agent | Mike Ford | — | New York Yankees | New York Yankees signed free agent 1B Mike Ford to a minor league contract. |
| Jul 16, 2013 | Signed as free agent | Wander Franco | — | Houston Astros | Houston Astros signed free agent SS Wander Franco to a minor league contract. |
| Jul 16, 2013 | Signed | Venn Biter | — | Philadelphia Phillies | Philadelphia Phillies signed OF Venn Biter. |
| Jul 16, 2013 | Signed | Denton Keys | — | Philadelphia Phillies | Philadelphia Phillies signed LHP Denton Keys. |
| Jul 16, 2013 | Signed as free agent | Daniel Carroll | — | Atlanta Braves | Atlanta Braves signed free agent LF Daniel Carroll to a minor league contract. |
| Jul 16, 2013 | Signed as free agent | Jason Rodriguez | — | Cleveland Guardians | Cleveland Indians signed free agent C Jason Rodriguez to a minor league contract. |
| Jul 16, 2013 | Signed as free agent | Jose Vicente | — | Cleveland Guardians | Cleveland Indians signed free agent C Jose Vicente to a minor league contract. |
| Jul 16, 2013 | Signed as free agent | Sauris Mejia | — | Detroit Tigers | Detroit Tigers signed free agent OF Sauris Mejia to a minor league contract. |
| Jul 16, 2013 | Signed as free agent | Alberto Estrella | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 3B Alberto Estrella to a minor league contract. |
| Jul 16, 2013 | Signed as free agent | Artur Strzalka | — | New York Yankees | New York Yankees signed free agent LHP Artur Strzalka to a minor league contract. |
| Jul 16, 2013 | Signed | James Sherfy | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Jimmie Sherfy. |
| Jul 15, 2013 | Trade | Armando Galarraga | Cincinnati Reds | Colorado Rockies | Colorado Rockies traded RHP Parker Frazier to Cincinnati Reds for RHP Armando Galarraga. |
| Jul 15, 2013 | Signed as free agent | Melvyn Forbes | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Melvyn Forbes to a minor league contract. |
| Jul 15, 2013 | Signed as free agent | Cristopher Sánchez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LHP Cristopher Sanchez to a minor league contract. |
| Jul 14, 2013 | Signed as free agent | Joantgel Segovia | — | Milwaukee Brewers | Milwaukee Brewers signed free agent CF Joantgel Segovia to a minor league contract. |
| Jul 13, 2013 | Trade | Matt Thornton | Chicago White Sox | Boston Red Sox | Chicago White Sox traded LHP Matt Thornton to Boston Red Sox for LF Brandon Jacobs. |
| Jul 13, 2013 | Signed as free agent | Eric Patterson | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 2B Eric Patterson to a minor league contract. |
| Jul 13, 2013 | Signed | Federico Castagnini | — | Baltimore Orioles | Baltimore Orioles signed SS Federico Castagnini. |
| Jul 13, 2013 | Signed as free agent | Simon Gravel | — | Boston Red Sox | Boston Red Sox signed free agent C Simon Gravel to a minor league contract. |
| Jul 13, 2013 | Signed as free agent | Pablo Garcia | — | Miami Marlins | Miami Marlins signed free agent C Pablo Garcia to a minor league contract. |
| Jul 13, 2013 | Signed as free agent | Garvis Lara | — | Miami Marlins | Miami Marlins signed free agent SS Garvis Lara to a minor league contract. |
| Jul 12, 2013 | Signed | Adam Plutko | — | Cleveland Guardians | Cleveland Indians signed RHP Adam Plutko. |
| Jul 12, 2013 | Signed as free agent | Frankeny Fernandez | — | Houston Astros | Houston Astros signed free agent SS Frankeny Fernandez to a minor league contract. |
| Jul 12, 2013 | Signed as free agent | Felix Lucas | — | Houston Astros | Houston Astros signed free agent OF Felix Lucas to a minor league contract. |
| Jul 12, 2013 | Trade | Russ Canzler | Baltimore Orioles | Pittsburgh Pirates | Baltimore Orioles traded 3B Russ Canzler to Pittsburgh Pirates for RHP Tim Alderson. |
| Jul 12, 2013 | Signed | Kris Bryant | — | Chicago Cubs | Chicago Cubs signed 3B Kris Bryant. |
| Jul 12, 2013 | Signed | Colin Moran | — | Miami Marlins | Miami Marlins signed SS Colin Moran. |
| Jul 12, 2013 | Signed | Jake Brentz | — | Toronto Blue Jays | Toronto Blue Jays signed Jacob Brentz. |
| Jul 12, 2013 | Signed | Rowdy Tellez | — | Toronto Blue Jays | Toronto Blue Jays signed 1B Rowdy Tellez. |
| Jul 12, 2013 | Signed | Devonte German | — | Houston Astros | Houston Astros signed RHP Devonte German. |
| Jul 12, 2013 | Signed | Myles Smith | — | Boston Red Sox | Boston Red Sox signed Myles Smith. |
| Jul 12, 2013 | Signed | Mauricio Dubón | — | Boston Red Sox | Boston Red Sox signed SS Mauricio Dubon. |
| Jul 12, 2013 | Signed | Nick Longhi | — | Boston Red Sox | Boston Red Sox signed OF Nick Longhi. |
| Jul 12, 2013 | Signed | Pat Goetze | — | Boston Red Sox | Boston Red Sox signed RHP Pat Goetze. |
| Jul 12, 2013 | Signed as free agent | Ryan Quigley | — | San Diego Padres | San Diego Padres signed free agent RHP Ryan Quigley to a minor league contract. |
| Jul 12, 2013 | Signed | Jon Keller | — | Baltimore Orioles | Baltimore Orioles signed RHP Jon Keller. |
| Jul 12, 2013 | Signed | Travis Seabrooke | — | Baltimore Orioles | Baltimore Orioles signed LHP Travis Seabrooke. |
| Jul 12, 2013 | Signed | John Riley | — | San Francisco Giants | San Francisco Giants signed C John Riley. |
| Jul 12, 2013 | Signed | MJ Villegas | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP MJ Villegas. |
| Jul 12, 2013 | Signed | Tyler Alamo | — | Chicago Cubs | Chicago Cubs signed C Tyler Alamo. |
| Jul 12, 2013 | Signed | Tony Rizzotti | — | San Diego Padres | San Diego Padres signed RHP Tony Rizzotti. |
| Jul 12, 2013 | Signed | Seth Wagner | — | Minnesota Twins | Minnesota Twins signed LHP Seth Wagner. |
| Jul 12, 2013 | Signed | Nestor Cortes | — | New York Yankees | New York Yankees signed LHP Nestor Cortes. |
| Jul 12, 2013 | Signed | Drew Bridges | — | New York Yankees | New York Yankees signed 1B Drew Bridges. |
| Jul 12, 2013 | Signed | Nelson Zulueta | — | Miami Marlins | Miami Marlins signed RHP Nelson Zulueta. |
| Jul 12, 2013 | Signed | Tyler Kane | — | Miami Marlins | Miami Marlins signed RHP Tyler Kane. |
| Jul 12, 2013 | Signed | Ryan Chapman | — | New York Mets | New York Mets signed RHP Ryan Chapman. |
| Jul 12, 2013 | Signed | Max Homick | — | Baltimore Orioles | Baltimore Orioles signed LHP Max Homick. |
| Jul 12, 2013 | Signed | Nick Vander Tuig | — | San Francisco Giants | San Francisco Giants signed RHP Nick Vander Tuig. |
| Jul 12, 2013 | Signed | Dustin Fowler | — | New York Yankees | New York Yankees signed OF Dustin Fowler. |
| Jul 12, 2013 | Signed | Aaron Judge | — | New York Yankees | New York Yankees signed OF Aaron Judge. |
| Jul 12, 2013 | Signed | Stefan Crichton | — | Baltimore Orioles | Baltimore Orioles signed RHP Stefan Crichton. |
| Jul 12, 2013 | Signed | Trevor Clifton | — | Chicago Cubs | Chicago Cubs signed RHP Trevor Clifton. |
| Jul 12, 2013 | Signed | Caleb Simpson | — | San Francisco Giants | San Francisco Giants signed RHP William Simpson. |
| Jul 12, 2013 | Signed | Nicholas Gonzalez | — | San Francisco Giants | San Francisco Giants signed LHP Nicholas Gonzalez. |
| Jul 12, 2013 | Signed | Dylan Brooks | — | San Francisco Giants | San Francisco Giants signed RHP Dylan Brooks. |
| Jul 12, 2013 | Signed | Brad Renner | — | Chicago Cubs | Chicago Cubs signed RHP Brad Renner. |
| Jul 12, 2013 | Signed as free agent | Moises Bello | — | Detroit Tigers | Detroit Tigers signed free agent SS Moises Bello to a minor league contract. |
| Jul 12, 2013 | Signed | Will Remillard | — | Chicago Cubs | Chicago Cubs signed C Will Remillard. |
| Jul 12, 2013 | Signed | Sal Mendez | — | Texas Rangers | Texas Rangers signed LHP Sal Mendez. |
| Jul 11, 2013 | Signed as free agent | Aaron Laffey | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Aaron Laffey to a minor league contract. |
| Jul 11, 2013 | Signed | Matthew Boyd | — | Toronto Blue Jays | Toronto Blue Jays signed LHP Matt Boyd. |
| Jul 11, 2013 | Signed | Trey Nielsen | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Trey Nielsen. |
| Jul 11, 2013 | Signed | Rafael Oliveras | — | Boston Red Sox | Boston Red Sox signed OF Rafael Oliveras. |
| Jul 11, 2013 | Signed as free agent | Bobby Lanigan | — | Boston Red Sox | Boston Red Sox signed free agent RHP Bobby Lanigan to a minor league contract. |
| Jul 11, 2013 | Signed as free agent | Mike Costanzo | — | Cincinnati Reds | Cincinnati Reds signed free agent 3B Mike Costanzo to a minor league contract. |
| Jul 11, 2013 | Signed | Jarred Smith | — | Texas Rangers | Texas Rangers signed RHP Jarred Smith. |
| Jul 11, 2013 | Signed as free agent | Logan Norris | — | Colorado Rockies | Colorado Rockies signed free agent RHP Logan Norris to a minor league contract. |
| Jul 11, 2013 | Signed as free agent | Troy Neiman | — | Colorado Rockies | Colorado Rockies signed free agent RHP Troy Neiman to a minor league contract. |
| Jul 11, 2013 | Signed | Daniel Ayers | — | Baltimore Orioles | Baltimore Orioles signed LHP Daniel Ayers. |
| Jul 11, 2013 | Signed as free agent | Gustavo Armas | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Gustavo Armas to a minor league contract. |
| Jul 11, 2013 | Signed | Dexter Kjerstad | — | Kansas City Royals | Kansas City Royals signed OF Dexter Kjerstad. |
| Jul 11, 2013 | Signed | Drew Dosch | — | Baltimore Orioles | Baltimore Orioles signed 3B Drew Dosch. |
| Jul 11, 2013 | Signed as free agent | Jorge Oviedo | — | Colorado Rockies | Colorado Rockies signed free agent LHP Jorge Oviedo to a minor league contract. |
| Jul 11, 2013 | Signed as free agent | Carlos Luna | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Carlos Luna to a minor league contract. |
| Jul 11, 2013 | Signed as free agent | Luis Carpio | — | New York Mets | New York Mets signed free agent SS Luis Carpio to a minor league contract. |
| Jul 11, 2013 | Signed as free agent | Tanis Lara | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Tanis Lara to a minor league contract. |
| Jul 11, 2013 | Signed as free agent | Orlando Romero | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Orlando Romero to a minor league contract. |
| Jul 11, 2013 | Signed | Wesley Jones | — | Colorado Rockies | Colorado Rockies signed 2B Wesley Jones. |
| Jul 10, 2013 | Signed as free agent | Jason Bergmann | — | Kansas City Royals | Kansas City Royals signed free agent RHP Jason Bergmann to a minor league contract. |
| Jul 10, 2013 | Signed | Erich Weiss | — | Pittsburgh Pirates | Pittsburgh Pirates signed SS Erich Weiss. |
| Jul 10, 2013 | Signed as free agent | Jonathan Van Eaton | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Jonathan Van Eaton to a minor league contract. |
| Jul 10, 2013 | Signed | Ryan Deeter | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Ryan Deeter. |
| Jul 10, 2013 | Signed as free agent | Steven Halcomb | — | Milwaukee Brewers | Milwaukee Brewers signed free agent SS Steven Halcomb to a minor league contract. |
| Jul 10, 2013 | Signed as free agent | Jesús Liranzo | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Jesus Liranzo to a minor league contract. |
| Jul 10, 2013 | Signed as free agent | Kelvin Perez | — | Detroit Tigers | Detroit Tigers signed free agent RHP Kelvin Perez to a minor league contract. |
| Jul 10, 2013 | Signed as free agent | Jose Gil | — | New York Yankees | New York Yankees signed free agent C Jose Gil to a minor league contract. |
| Jul 10, 2013 | Signed as free agent | Edgar Gonzalez | — | Chicago Cubs | Chicago Cubs signed free agent 2B Edgar Gonzalez to a minor league contract. |
| Jul 10, 2013 | Signed | Zack Weiss | — | Cincinnati Reds | Cincinnati Reds signed RHP Zack Weiss. |
| Jul 10, 2013 | Signed as free agent | Tyler Hale | — | San Diego Padres | San Diego Padres signed free agent RHP Tyler Hale to a minor league contract. |
| Jul 10, 2013 | Signed as free agent | Yeison Santana | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Yeison Santana to a minor league contract. |
| Jul 9, 2013 | Signed | Kendall Graveman | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Kendall Graveman. |
| Jul 9, 2013 | Signed | Chad Girodo | — | Toronto Blue Jays | Toronto Blue Jays signed LHP Chad Girodo. |
| Jul 9, 2013 | Released | Ty Wigginton | — | St. Louis Cardinals | St. Louis Cardinals released 1B Ty Wigginton. |
| Jul 9, 2013 | Signed | Hunter Renfroe | — | San Diego Padres | San Diego Padres signed OF Hunter Renfroe. |
| Jul 9, 2013 | Signed as free agent | Matt Wright | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Matt Wright to a minor league contract. |
| Jul 9, 2013 | Trade | Mitchell Boggs | St. Louis Cardinals | Colorado Rockies | St. Louis Cardinals traded RHP Mitchell Boggs to Colorado Rockies. |
| Jul 9, 2013 | Released | Brandon Lyon | — | New York Mets | New York Mets released RHP Brandon Lyon. |
| Jul 9, 2013 | Signed as free agent | Drew Carpenter | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Drew Carpenter to a minor league contract. |
| Jul 9, 2013 | Signed as free agent | Nelson Aguida | — | Chicago White Sox | Chicago White Sox signed free agent C Nelson Aguida to a minor league contract. |
| Jul 9, 2013 | Signed as free agent | Daniel Howell | — | Seattle Mariners | Seattle Mariners signed free agent 1B Daniel Howell to a minor league contract. |
| Jul 9, 2013 | Signed as free agent | Jamie Patterson | — | Chicago White Sox | Chicago White Sox signed free agent RHP Jamie Patterson to a minor league contract. |
| Jul 9, 2013 | Signed as free agent | Ramon Hernandez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 3B Ramon Hernandez to a minor league contract. |
| Jul 9, 2013 | Signed as free agent | Dilmer Mejia | — | Atlanta Braves | Atlanta Braves signed free agent LHP Dilmer Mejia to a minor league contract. |
| Jul 9, 2013 | Signed as free agent | Luis Sanchez | — | New York Yankees | New York Yankees signed free agent C Luis Sanchez to a minor league contract. |
| Jul 9, 2013 | Signed as free agent | Edgardo Leon | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Edgardo Leon to a minor league contract. |
| Jul 9, 2013 | Signed as free agent | Nestor Oronel | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Nestor Oronel to a minor league contract. |
| Jul 9, 2013 | Signed as free agent | Eliezer Ramirez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LF Eliezer Ramirez to a minor league contract. |
| Jul 9, 2013 | Signed as free agent | Jon Fitzsimmons | — | Kansas City Royals | Kansas City Royals signed free agent RHP Jon Fitzsimmons to a minor league contract. |
| Jul 8, 2013 | Trade | Scott Hairston | Chicago Cubs | Washington Nationals | Chicago Cubs traded LF Scott Hairston to Washington Nationals for RHP Ivan Pineyro. |
| Jul 8, 2013 | Signed | Justin Garcia | — | Cleveland Guardians | Cleveland Indians signed RHP Justin Garcia. |
| Jul 8, 2013 | Signed as free agent | Jose Herrera | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Jose Herrera to a minor league contract. |
| Jul 8, 2013 | Signed as free agent | Francis Martinez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Francis Martinez to a minor league contract. |
| Jul 8, 2013 | Signed as free agent | Jose Lopez | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Jose Lopez to a minor league contract. |
| Jul 8, 2013 | Signed as free agent | Didimo Bracho | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent SS Didimo Bracho to a minor league contract. |
| Jul 8, 2013 | Signed | Buddy Borden | — | Pittsburgh Pirates | Pittsburgh Pirates signed Buddy Borden. |
| Jul 8, 2013 | Signed as free agent | Dante Rosenberg | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C Dante Rosenberg to a minor league contract. |
| Jul 8, 2013 | Signed as free agent | Cody Satterwhite | — | New York Mets | New York Mets signed free agent RHP Cody Satterwhite to a minor league contract. |
| Jul 8, 2013 | Signed as free agent | Jeff Francoeur | — | San Francisco Giants | San Francisco Giants signed free agent OF Jeff Francoeur to a minor league contract. |
| Jul 8, 2013 | Signed as free agent | Eric Niesen | — | Boston Red Sox | Boston Red Sox signed free agent LHP Eric Niesen to a minor league contract. |
| Jul 8, 2013 | Signed | Lana Akau | — | Athletics | Oakland Athletics signed C Iolana Akau. |
| Jul 8, 2013 | Signed as free agent | Marbin Montijo | — | New York Mets | New York Mets signed free agent RHP Marbin Montijo to a minor league contract. |
| Jul 8, 2013 | Signed as free agent | Emmanuel Morel | — | Minnesota Twins | Minnesota Twins signed free agent SS Emmanuel Morel to a minor league contract. |
| Jul 8, 2013 | Signed | Alex Greer | — | Cincinnati Reds | Cincinnati Reds signed CF Alex Greer. |
| Jul 8, 2013 | Signed as free agent | Hayden Timberlake | — | Houston Astros | Houston Astros signed free agent C Hayden Timberlake to a minor league contract. |
| Jul 8, 2013 | Signed as free agent | Luis Escobar | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Luis Escobar to a minor league contract. |
| Jul 7, 2013 | Signed | Christian Jones | — | San Francisco Giants | San Francisco Giants signed LHP Christian Jones. |
| Jul 7, 2013 | Signed as free agent | Rob Smorol | — | Boston Red Sox | Boston Red Sox signed free agent LHP Rob Smorol to a minor league contract. |
| Jul 7, 2013 | Signed | K.J. Trader | — | Boston Red Sox | Boston Red Sox signed RHP K.J. Trader. |
| Jul 7, 2013 | Released | Shawn Camp | — | Chicago Cubs | Chicago Cubs released RHP Shawn Camp. |
| Jul 7, 2013 | Signed as free agent | Gabriel Ovalle | — | Cincinnati Reds | Cincinnati Reds signed free agent SS Gabriel Ovalle to a minor league contract. |
| Jul 6, 2013 | Signed | Clinton Hollon | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Clinton Hollon. |
| Jul 6, 2013 | Trade | Alex Liddi | Seattle Mariners | Baltimore Orioles | Seattle Mariners traded 1B Alex Liddi to Baltimore Orioles. |
| Jul 6, 2013 | Trade | Angel Sánchez | Los Angeles Dodgers | Miami Marlins | Miami Marlins traded RHP Ricky Nolasco to Los Angeles Dodgers for RHP Steve Ames, RHP Josh Wall and RHP Angel Sanchez. |
| Jul 6, 2013 | Signed as free agent | Brad Guenther | — | Los Angeles Angels | Los Angeles Angels signed free agent C Brad Guenther to a minor league contract. |
| Jul 6, 2013 | Signed | Ryan Scott | — | Los Angeles Dodgers | Los Angeles Dodgers signed C Ryan Scott. |
| Jul 6, 2013 | Signed | Trevor Stevens | — | Chicago Cubs | Chicago Cubs signed IF Trevor Stevens. |
| Jul 6, 2013 | Signed | Sam Wilson | — | Chicago Cubs | Chicago Cubs signed LHP Sam Wilson. |
| Jul 6, 2013 | Signed | Robert Garcia | — | Chicago Cubs | Chicago Cubs signed OF Robert Garcia. |
| Jul 6, 2013 | Signed as free agent | Cesar Araujo | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Cesar Araujo to a minor league contract. |
| Jul 5, 2013 | Released | Jeff Francoeur | — | Kansas City Royals | Kansas City Royals released RF Jeff Francoeur. |
| Jul 5, 2013 | Signed as free agent | Kelly Shoppach | — | Washington Nationals | Washington Nationals signed free agent C Kelly Shoppach to a minor league contract. |
| Jul 5, 2013 | Signed | Brandon Brosher | — | New York Mets | New York Mets signed 1B Brandon Brosher. |
| Jul 5, 2013 | Signed as free agent | Edgar Gomez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Edgar Gomez to a minor league contract. |
| Jul 5, 2013 | Signed as free agent | Kanekoa Texeira | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Kanekoa Texeira to a minor league contract. |
| Jul 5, 2013 | Signed | Daniel Child | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Daniel Child. |
| Jul 5, 2013 | Signed as free agent | Ian Stewart | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 3B Ian Stewart to a minor league contract. |
| Jul 5, 2013 | Signed as free agent | Chris Sweeney | — | Kansas City Royals | Kansas City Royals signed free agent OF Chris Sweeney to a minor league contract. |
| Jul 5, 2013 | Signed as free agent | Callan Pearce | — | Minnesota Twins | Minnesota Twins signed free agent RHP Callan Pearce to a minor league contract. |
| Jul 5, 2013 | Signed | Narciso Crook | — | Cincinnati Reds | Cincinnati Reds signed RF Narciso Crook. |
| Jul 5, 2013 | Signed as free agent | Kelyn Jose | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Kelyn Jose to a minor league contract. |
| Jul 4, 2013 | Signed | Kent Emanuel | — | Houston Astros | Houston Astros signed LHP Kent Emanuel. |
| Jul 4, 2013 | Signed | Hobbs Johnson | — | Milwaukee Brewers | Milwaukee Brewers signed LHP Hobbs Johnson. |
| Jul 4, 2013 | Signed | Billy Flamion | — | Los Angeles Dodgers | Los Angeles Dodgers signed LHP Billy Flamion. |
| Jul 4, 2013 | Signed | Jason Hursh | — | Atlanta Braves | Atlanta Braves signed RHP Jason Hursh. |
| Jul 4, 2013 | Signed as free agent | Ben Broussard | — | Kansas City Royals | Kansas City Royals signed free agent 1B Ben Broussard to a minor league contract. |
| Jul 4, 2013 | Signed | Luke Lanphere | — | Texas Rangers | Texas Rangers signed RHP Luke Lanphere. |
| Jul 4, 2013 | Signed | Luis Pollorena | — | Texas Rangers | Texas Rangers signed LHP Luis Pollorena. |
| Jul 4, 2013 | Signed | Stephen Tarpley | — | Baltimore Orioles | Baltimore Orioles signed Stephen Tarpley. |
| Jul 4, 2013 | Signed as free agent | Nate Samson | — | Chicago Cubs | Chicago Cubs signed free agent 3B Nate Samson to a minor league contract. |
| Jul 4, 2013 | Signed as free agent | Edgar Herrera | — | Minnesota Twins | Minnesota Twins signed free agent RF Edgar Herrera to a minor league contract. |
| Jul 4, 2013 | Signed as free agent | Ruar Verkerk | — | Minnesota Twins | Minnesota Twins signed free agent 3B Ruar Verkerk to a minor league contract. |
| Jul 4, 2013 | Signed | Jarrett Freeland | — | Cincinnati Reds | Cincinnati Reds signed C Jarrett Freeland. |
| Jul 4, 2013 | Signed as free agent | Antony Fuentes | — | Toronto Blue Jays | Toronto Blue Jays signed free agent C Antony Fuentes to a minor league contract. |
| Jul 4, 2013 | Signed as free agent | William Zambrano | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP William Zambrano to a minor league contract. |
| Jul 3, 2013 | Signed | Adam Frazier | — | Pittsburgh Pirates | Pittsburgh Pirates signed SS Adam Frazier. |
| Jul 3, 2013 | Signed | Andrew Dennis | — | Pittsburgh Pirates | Pittsburgh Pirates signed C Andrew Dennis. |
| Jul 3, 2013 | Signed as free agent | Luis Alfonso Cruz | — | New York Yankees | New York Yankees signed free agent 3B Luis Alfonso Cruz. |
| Jul 3, 2013 | Signed as free agent | Clay Zavada | — | San Diego Padres | San Diego Padres signed free agent LHP Clay Zavada to a minor league contract. |
| Jul 3, 2013 | Signed | Daryl Norris | — | Detroit Tigers | Detroit Tigers signed RHP Daryl Norris. |
| Jul 3, 2013 | Signed | José Mesa Jr. | — | New York Yankees | New York Yankees signed RHP Jose Mesa. |
| Jul 3, 2013 | Signed as free agent | Galvi Moscat | — | Miami Marlins | Miami Marlins signed free agent OF Galvi Moscat to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Yunior Montero | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Yunior Montero to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Robert Molina | — | Minnesota Twins | Minnesota Twins signed free agent C Robert Molina to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Terrence Josephina | — | Atlanta Braves | Atlanta Braves signed free agent 3B Terrence Josephina to a minor league contract. |
| Jul 3, 2013 | Signed | P.J. Cerreto | — | Cincinnati Reds | Cincinnati Reds signed RHP P.J. Cerreto. |
| Jul 3, 2013 | Signed as free agent | Jheyser Azuaje | — | Detroit Tigers | Detroit Tigers signed free agent C Jheyser Azuaje to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Isrrael De La Cruz | — | Detroit Tigers | Detroit Tigers signed free agent SS Isrrael De La Cruz to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Luis Ledezma | — | Detroit Tigers | Detroit Tigers signed free agent RHP Luis Ledezma to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Jake Bowey | — | Houston Astros | Houston Astros signed free agent C Jake Bowey to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Lucas Tirado | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent SS Lucas Tirado to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Jesus Guerrero | — | Miami Marlins | Miami Marlins signed free agent C Jesus Guerrero to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Josue Guzman | — | Miami Marlins | Miami Marlins signed free agent OF Josue Guzman to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Ermel Pena | — | Miami Marlins | Miami Marlins signed free agent SS Ermel Pena to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Yefry Reyes | — | Miami Marlins | Miami Marlins signed free agent 2B Yefry Reyes to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Roberto Tejada | — | Miami Marlins | Miami Marlins signed free agent LHP Roberto Tejada to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Ramon Garcia | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Ramon Garcia to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Edison Lantigua | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent CF Edison Lantigua to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Luis Perez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent SS Luis Perez to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Raul Siri | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 1B Raul Siri to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Adrian Valerio | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent SS Adrian Valerio to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Julian Villamar | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Julian Villamar to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Greifer Andrade | — | Seattle Mariners | Seattle Mariners signed free agent SS Greifer Andrade to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Anthony Jimenez | — | Seattle Mariners | Seattle Mariners signed free agent OF Anthony Jimenez to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Deiyerbert Bolivar | — | San Francisco Giants | San Francisco Giants signed free agent LHP Deiyerbert Bolivar to a minor league contract. |
| Jul 3, 2013 | Signed as free agent | Mikey Edie | — | San Francisco Giants | San Francisco Giants signed free agent CF Mikey Edie to a minor league contract. |
| Jul 2, 2013 | Trade | Pedro Strop | Baltimore Orioles | Chicago Cubs | Chicago Cubs traded RHP Scott Feldman and C Steve Clevenger to Baltimore Orioles for RHP Jake Arrieta and RHP Pedro Strop. |
| Jul 2, 2013 | Trade | Carlos Marmol | Chicago Cubs | Los Angeles Dodgers | Chicago Cubs traded RHP Carlos Marmol to Los Angeles Dodgers for RHP Matt Guerrier. |
| Jul 2, 2013 | Trade | Ronald Torreyes | Chicago Cubs | Houston Astros | Chicago Cubs traded 2B Ronald Torreyes to Houston Astros. |
| Jul 2, 2013 | Signed as free agent | Carlos Talavera | — | St. Louis Cardinals | St. Louis Cardinals signed free agent CF Carlos Talavera to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Hector Linares | — | St. Louis Cardinals | St. Louis Cardinals signed free agent SS Hector Linares to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Sandy Alcantara | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Sandy Alcantara to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Kerrion Bennett | — | St. Louis Cardinals | St. Louis Cardinals signed free agent LHP Kerrion Bennett to a minor league contract. |
| Jul 2, 2013 | Signed | Jerry Mulderig | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Jerry Mulderig. |
| Jul 2, 2013 | Signed | Ryne Stanek | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Ryne Stanek. |
| Jul 2, 2013 | Signed | Chase McDonald | — | Houston Astros | Houston Astros signed 1B Chase McDonald. |
| Jul 2, 2013 | Signed | Tyler Viza | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Tyler Viza. |
| Jul 2, 2013 | Signed as free agent | Jermaine Mitchell | — | Minnesota Twins | Minnesota Twins signed free agent CF Jermaine Mitchell to a minor league contract. |
| Jul 2, 2013 | Signed | Ozzie Albies | — | Atlanta Braves | Atlanta Braves signed SS Ozhaino Albies. |
| Jul 2, 2013 | Signed | Joel Arias | — | Kansas City Royals | Kansas City Royals signed OF Joel Arias. |
| Jul 2, 2013 | Signed | Kelvin Beltre | — | San Francisco Giants | San Francisco Giants signed SS Kelvin Beltre. |
| Jul 2, 2013 | Signed | Jose Cabello | — | Washington Nationals | Washington Nationals signed C Jose Cabello. |
| Jul 2, 2013 | Signed | Jose Caraballo | — | Kansas City Royals | Kansas City Royals signed OF Jose Caraballo. |
| Jul 2, 2013 | Signed | Yeffry De Aza | — | New York Mets | New York Mets signed SS Yeffry De Aza. |
| Jul 2, 2013 | Signed | Marten Gasparini | — | Kansas City Royals | Kansas City Royals signed SS Marten Gasparini. |
| Jul 2, 2013 | Signed | Manuel Geraldo | — | San Francisco Giants | San Francisco Giants signed SS Manuel Geraldo. |
| Jul 2, 2013 | Signed | Frank Gil | — | Atlanta Braves | Atlanta Braves signed RHP Frank Gil. |
| Jul 2, 2013 | Signed | Hector Hernandez | — | Detroit Tigers | Detroit Tigers signed OF Hector Hernandez. |
| Jul 2, 2013 | Signed | Josue Herrera | — | Arizona Diamondbacks | Arizona Diamondbacks signed SS Josue Herrera. |
| Jul 2, 2013 | Signed | Argenis Hiciano | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Argeny Hiciano. |
| Jul 2, 2013 | Signed | Carlos Hiciano | — | Athletics | Oakland Athletics signed SS Carlos Hiciano. |
| Jul 2, 2013 | Signed as free agent | Brent Leach | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Brent Leach to a minor league contract. |
| Jul 2, 2013 | Signed | Jose Jimenez | — | Washington Nationals | Washington Nationals signed LHP Jose Jimenez. |
| Jul 2, 2013 | Signed | Coco Johnson | — | Miami Marlins | Miami Marlins signed OF Coco Johnson. |
| Jul 2, 2013 | Signed | Kevin Josephina | — | Atlanta Braves | Atlanta Braves signed SS Kevin Josephina. |
| Jul 2, 2013 | Signed | Jason Laguna | — | Atlanta Braves | Atlanta Braves signed RHP Jason Laguna. |
| Jul 2, 2013 | Signed | Hector Martinez | — | Detroit Tigers | Detroit Tigers signed SS Hector Martinez. |
| Jul 2, 2013 | Signed | Yohan Matos | — | Chicago Cubs | Chicago Cubs signed C Yohan Matos. |
| Jul 2, 2013 | Signed | Erick Mendez | — | Kansas City Royals | Kansas City Royals signed OF Erick Mendez. |
| Jul 2, 2013 | Signed | Anthony Pereira | — | Detroit Tigers | Detroit Tigers signed SS Anthony Pereira. |
| Jul 2, 2013 | Signed | Victor Robles | — | Washington Nationals | Washington Nationals signed OF Victor Robles. |
| Jul 2, 2013 | Signed | Yonauris Rodriguez | — | New York Yankees | New York Yankees signed SS Yonauris Rodriguez. |
| Jul 2, 2013 | Signed | Ali Sánchez | — | New York Mets | New York Mets signed C Ali Sanchez. |
| Jul 2, 2013 | Signed | Luis Sanchez | — | Los Angeles Angels | Los Angeles Angels signed RHP Luis Sanchez. |
| Jul 2, 2013 | Signed | Ricardo Sánchez | — | Los Angeles Angels | Los Angeles Angels signed Ricardo Sanchez. |
| Jul 2, 2013 | Signed | Jhonny Santos | — | Miami Marlins | Miami Marlins signed CF Jhonny Santos. |
| Jul 2, 2013 | Signed | Luis Silva | — | New York Mets | New York Mets signed RHP Luis Silva. |
| Jul 2, 2013 | Signed | Junior Soto | — | Cleveland Guardians | Cleveland Indians signed OF Junior Soto. |
| Jul 2, 2013 | Signed | Edward Trejos | — | Washington Nationals | Washington Nationals signed C Edward Trejos. |
| Jul 2, 2013 | Signed | Cristhian Vasquez | — | Kansas City Royals | Kansas City Royals signed OF Cristhian Vasquez. |
| Jul 2, 2013 | Signed | Wildenson Yanez | — | Detroit Tigers | Detroit Tigers signed RHP Wildenson Yanez. |
| Jul 2, 2013 | Signed as free agent | Rigoberto Terrazas | — | New York Mets | New York Mets signed free agent 2B Rigoberto Terrazas to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Luis Veras | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Luis Veras to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Jesus Lopez | — | Athletics | Oakland Athletics signed free agent SS Jesus Lopez to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Francisco Rodriguez | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Francisco Rodriguez to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Jeferson Mejia | — | Chicago Cubs | Chicago Cubs signed free agent Jeferson Mejia. |
| Jul 2, 2013 | Signed as free agent | Roni Tapia | — | Minnesota Twins | Minnesota Twins signed free agent 3B Roni Tapia to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Luis Barrios | — | Atlanta Braves | Atlanta Braves signed free agent LHP Luis Barrios to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Rafael Barrios | — | Atlanta Braves | Atlanta Braves signed free agent SS Rafael Barrios to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Jeyson Cabrera | — | Atlanta Braves | Atlanta Braves signed free agent OF Jeyson Cabrera to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Ronny Guillermo | — | Atlanta Braves | Atlanta Braves signed free agent SS Ronny Guillermo to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Jose Pina | — | Atlanta Braves | Atlanta Braves signed free agent OF Jose Pina to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Alejandro Salazar | — | Atlanta Braves | Atlanta Braves signed free agent SS Alejandro Salazar to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Jeong-Hyeon Yoon | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Jeong-Hyeon Yoon to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Yeferson Ardiles | — | Boston Red Sox | Boston Red Sox signed free agent RHP Yeferson Ardiles to a minor league contract. |
| Jul 2, 2013 | Signed | Jeff Driskel | — | Boston Red Sox | Boston Red Sox signed OF Jeff Driskel. |
| Jul 2, 2013 | Signed as free agent | Erling Moreno | — | Chicago Cubs | Chicago Cubs signed free agent RHP Erling Moreno to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Gleyber Torres | — | Chicago Cubs | Chicago Cubs signed free agent SS Gleyber Torres to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Marcos Encarnacion | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Marcos Encarnacion to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Eriberto Garcia | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Eriberto Garcia to a minor league contract. |
| Jul 2, 2013 | Signed | Morgan Lofstrom | — | Cincinnati Reds | Cincinnati Reds signed C Morgan Lofstrom. |
| Jul 2, 2013 | Signed as free agent | Willi Castro | — | Cleveland Guardians | Cleveland Indians signed free agent SS Willi Castro to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Jose Gomez | — | Colorado Rockies | Colorado Rockies signed free agent SS Jose Gomez to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Hidekel Gonzalez | — | Colorado Rockies | Colorado Rockies signed free agent C Hidekel Gonzalez to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Carlos Herrera | — | Colorado Rockies | Colorado Rockies signed free agent SS Carlos Herrera to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Erick Julio | — | Colorado Rockies | Colorado Rockies signed free agent RHP Erick Julio to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Micker Adolfo | — | Chicago White Sox | Chicago White Sox signed free agent RF Micker Adolfo to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Elys Escobar | — | Detroit Tigers | Detroit Tigers signed free agent C Elys Escobar to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Osvaldo Duarte | — | Houston Astros | Houston Astros signed free agent SS Osvaldo Duarte to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Jonathan Matute | — | Houston Astros | Houston Astros signed free agent SS Jonathan Matute to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Joan Mauricio | — | Houston Astros | Houston Astros signed free agent SS Joan Mauricio to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Nestor Tejada | — | Houston Astros | Houston Astros signed free agent CF Nestor Tejada to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Meibrys Viloria | — | Kansas City Royals | Kansas City Royals signed free agent C Meibrys Viloria to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Daniel Padilla | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RF Daniel Padilla to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Johel Atencio | — | Milwaukee Brewers | Milwaukee Brewers signed free agent C Johel Atencio. |
| Jul 2, 2013 | Signed as free agent | Henry Correa | — | Milwaukee Brewers | Milwaukee Brewers signed free agent SS Henry Correa to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Nelson Hernandez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Nelson Hernandez to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Franly Mallen | — | Milwaukee Brewers | Milwaukee Brewers signed free agent SS Franly Mallen to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Julio Mendez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 2B Julio Mendez to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Nic Pierre | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LF Nicolas Pierre to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Johel Atencio | — | Milwaukee Brewers | Milwaukee Brewers signed free agent C Johel Atencio to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Ruddy Giron | — | San Diego Padres | San Diego Padres signed free agent SS Ruddy Giron to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Onil Pena | — | Seattle Mariners | Seattle Mariners signed free agent C Onil Pena to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Ronald Rosario | — | Seattle Mariners | Seattle Mariners signed free agent OF Ronald Rosario to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Estarly Cedeno | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Estarly Cedeno to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Carlos Guzman | — | Tampa Bay Rays | Tampa Bay Rays signed free agent SS Carlos Guzman to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Rafelin Lorenzo | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Rafelin Lorenzo to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Carlos Perez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent OF Carlos Perez to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Jose Almonte | — | Texas Rangers | Texas Rangers signed free agent OF Jose Almonte to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Edgar Arredondo | — | Texas Rangers | Texas Rangers signed free agent RHP Edgar Arredondo to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Michael De León | — | Texas Rangers | Texas Rangers signed free agent SS Michael De Leon to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Marcos Diplán | — | Texas Rangers | Texas Rangers signed free agent Marcos Diplan. |
| Jul 2, 2013 | Signed as free agent | Daniel Duarte | — | Texas Rangers | Texas Rangers signed free agent RHP Daniel Duarte to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Yeyson Yrizarri | — | Texas Rangers | Texas Rangers signed free agent SS Yeyson Yrizarri to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Samuel Zazueta | — | Texas Rangers | Texas Rangers signed free agent LHP Samuel Zazueta to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Miguel Almonte | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Miguel Almonte to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Daivin Familia | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Daivin Familia to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Yeltsin Gudino | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Yeltsin Gudino to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Manuel Herazo | — | Toronto Blue Jays | Toronto Blue Jays signed free agent C Manuel Herazo to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Enmanuel Moreta | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 3B Enmanuel Moreta to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Jose Nova | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Jose Nova to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Juan Nunez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Juan Nunez to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Freddy Rodriguez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LF Freddy Rodriguez to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Niser Rumardo | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Niser Rumardo to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Jesus Severino | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Jesus Severino to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Edwin Adames | — | Washington Nationals | Washington Nationals signed free agent RHP Edwin Adames to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Angel Guillen | — | Washington Nationals | Washington Nationals signed free agent RHP Angel Guillen to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Dany Rojas | — | Washington Nationals | Washington Nationals signed free agent OF Dany Rojas to a minor league contract. |
| Jul 2, 2013 | Signed as free agent | Jaimito Lebron | — | San Diego Padres | San Diego Padres signed free agent RHP Jaimito Lebron to a minor league contract. |
| Jul 1, 2013 | Signed | JaCoby Jones | — | Pittsburgh Pirates | Pittsburgh Pirates signed JaCoby Jones. |
| Jul 1, 2013 | Signed as free agent | Ramon E Ramirez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Ramon Ramirez to a minor league contract. |
| Jul 1, 2013 | Signed | Pat Valaika | — | Colorado Rockies | Colorado Rockies signed SS Patrick Valaika. |
| Jul 1, 2013 | Signed | Chaz Frank | — | Toronto Blue Jays | Toronto Blue Jays signed OF Chaz Frank. |
| Jul 1, 2013 | Signed | Chris Dula | — | Texas Rangers | Texas Rangers signed RHP Chris Dula. |
| Jul 1, 2013 | Signed | Elliot Morris | — | Los Angeles Angels | Los Angeles Angels signed Elliot Morris. |
| Jul 1, 2013 | Signed | Michael Wagner | — | Chicago Cubs | Chicago Cubs signed RHP Michael Wagner. |
| Jul 1, 2013 | Signed | Evan Mitchell | — | Cincinnati Reds | Cincinnati Reds signed RHP Evan Mitchell. |
| Jul 1, 2013 | Signed | Greg Harris | — | Los Angeles Dodgers | Los Angeles Dodgers signed Greg Harris. |
| Jul 1, 2013 | Signed | Brenton Allen | — | Washington Nationals | Washington Nationals signed OF Brenton Allen. |
| Jun 30, 2013 | Trade | Ty Kelly | Baltimore Orioles | Seattle Mariners | Seattle Mariners traded RF Eric Thames to Baltimore Orioles for 3B Ty Kelly. |
| Jun 30, 2013 | Signed as free agent | Xavier Nady | — | Colorado Rockies | Colorado Rockies signed free agent OF Xavier Nady to a minor league contract. |
| Jun 30, 2013 | Signed | Alec Grosser | — | Atlanta Braves | Atlanta Braves signed RHP Alec Grosser. |
| Jun 30, 2013 | Signed | Carlos Salazar | — | Atlanta Braves | Atlanta Braves signed RHP Carlos Salazar. |
| Jun 30, 2013 | Signed | Dylan Manwaring | — | Atlanta Braves | Atlanta Braves signed IF Dylan Manwaring. |
| Jun 30, 2013 | Signed as free agent | Evan Frey | — | Tampa Bay Rays | Tampa Bay Rays signed free agent CF Evan Frey to a minor league contract. |
| Jun 30, 2013 | Signed as free agent | Cody Ferrell | — | Cleveland Guardians | Cleveland Indians signed free agent OF Cody Ferrell to a minor league contract. |
| Jun 30, 2013 | Signed | Charcer Burks | — | Chicago Cubs | Chicago Cubs signed OF Charcer Burks. |
| Jun 30, 2013 | Signed | Chris Munnelly | — | Houston Astros | Houston Astros signed RHP Chris Munnelly. |
| Jun 29, 2013 | Signed | Teddy Stankiewicz | — | Boston Red Sox | Boston Red Sox signed RHP Teddy Stankiewicz. |
| Jun 29, 2013 | Signed | Nick Buckner | — | Pittsburgh Pirates | Pittsburgh Pirates signed OF Nick Buckner. |
| Jun 29, 2013 | Signed | Billy Roth | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Billy Roth. |
| Jun 29, 2013 | Signed | Will Kendall | — | Pittsburgh Pirates | Pittsburgh Pirates signed LHP Will Kendall. |
| Jun 29, 2013 | Signed | Mike Adams | — | Boston Red Sox | Boston Red Sox signed LHP Mike Adams. |
| Jun 29, 2013 | Signed as free agent | Ramon Hernandez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent C Ramon Hernandez to a minor league contract. |
| Jun 29, 2013 | Signed as free agent | Boof Bonser | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Boof Bonser to a minor league contract. |
| Jun 28, 2013 | Signed as free agent | Freddy Garcia | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Freddy Garcia to a minor league contract. |
| Jun 28, 2013 | Signed | Austin Meadows | — | Pittsburgh Pirates | Pittsburgh Pirates signed OF Austin Meadows. |
| Jun 28, 2013 | Signed | Jordan Paroubeck | — | San Diego Padres | San Diego Padres signed Jordan Paroubeck. |
| Jun 28, 2013 | Signed | Jace Chancellor | — | San Diego Padres | San Diego Padres signed RHP Jace Chancellor. |
| Jun 28, 2013 | Signed | Brian Holberton | — | Houston Astros | Houston Astros signed C Brian Holberton. |
| Jun 28, 2013 | Signed as free agent | Reid Brignac | — | Colorado Rockies | Colorado Rockies signed free agent SS Reid Brignac to a minor league contract. |
| Jun 28, 2013 | Signed | Anthony Tzamtzis | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Anthony Tzamtzis. |
| Jun 28, 2013 | Signed | Aaron Blair | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Aaron Blair. |
| Jun 28, 2013 | Signed | Ryan Eades | — | Minnesota Twins | Minnesota Twins signed RHP Ryan Eades. |
| Jun 28, 2013 | Signed | Raph Rhymes | — | Detroit Tigers | Detroit Tigers signed OF Raph Rhymes. |
| Jun 28, 2013 | Signed as free agent | Eddie McKiernan | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Eddie McKiernan to a minor league contract. |
| Jun 28, 2013 | Signed | Aaron Slegers | — | Minnesota Twins | Minnesota Twins signed RHP Aaron Slegers. |
| Jun 28, 2013 | Signed | Nick Frey | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Nicholas Frey. |
| Jun 28, 2013 | Signed | Cortland Cox | — | Cleveland Guardians | Cleveland Indians signed RHP Cortland Cox. |
| Jun 28, 2013 | Signed | Cody Ege | — | Texas Rangers | Texas Rangers signed LHP Cody Ege. |
| Jun 27, 2013 | Trade | John McDonald | Cleveland Guardians | Philadelphia Phillies | Cleveland Indians traded John McDonald to Philadelphia Phillies. |
| Jun 27, 2013 | Signed | Tyler Skulina | — | Chicago Cubs | Chicago Cubs signed RHP Tyler Skulina. |
| Jun 27, 2013 | Signed | Will LaMarche | — | Detroit Tigers | Detroit Tigers signed RHP Will LaMarche. |
| Jun 27, 2013 | Signed | Mitch Horacek | — | Baltimore Orioles | Baltimore Orioles signed LHP Mitch Horacek. |
| Jun 27, 2013 | Signed | Mike Yastrzemski | — | Baltimore Orioles | Baltimore Orioles signed OF Mike Yastrzemski. |
| Jun 27, 2013 | Signed | Johnny Davis | — | Milwaukee Brewers | Milwaukee Brewers signed OF Johnny Davis. |
| Jun 27, 2013 | Signed | Adam Engel | — | Chicago White Sox | Chicago White Sox signed OF Adam Engel. |
| Jun 27, 2013 | Signed as free agent | Matt Paré | — | San Francisco Giants | San Francisco Giants signed free agent C Matt Pare to a minor league contract. |
| Jun 27, 2013 | Signed | Ty Ross | — | San Francisco Giants | San Francisco Giants signed C Ty Ross. |
| Jun 26, 2013 | Signed | Dillon Overton | — | Athletics | Oakland Athletics signed LHP Dillon Overton. |
| Jun 26, 2013 | Signed | Jonah Heim | — | Baltimore Orioles | Baltimore Orioles signed C Jonah Heim. |
| Jun 26, 2013 | Signed | Jake Rodriguez | — | Houston Astros | Houston Astros signed C Jake Rodriguez. |
| Jun 26, 2013 | Signed as free agent | Carlos Leon | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Carlos Leon to a minor league contract. |
| Jun 26, 2013 | Signed as free agent | Chris Edmondson | — | Atlanta Braves | Atlanta Braves signed free agent OF Chris Edmondson to a minor league contract. |
| Jun 26, 2013 | Signed as free agent | Felipe Betemit | — | Baltimore Orioles | Baltimore Orioles signed free agent 2B Felipe Betemit to a minor league contract. |
| Jun 26, 2013 | Signed as free agent | Brett Teschner | — | Texas Rangers | Texas Rangers signed free agent C Brett Teschner to a minor league contract. |
| Jun 26, 2013 | Signed | Jalen Williams | — | Boston Red Sox | Boston Red Sox signed RHP Jalen Williams. |
| Jun 26, 2013 | Signed | Jake Bray | — | Baltimore Orioles | Baltimore Orioles signed RHP Jake Bray. |
| Jun 25, 2013 | Signed | Jordan Milbrath | — | Cleveland Guardians | Cleveland Indians signed RHP Jordan Milbrath. |
| Jun 25, 2013 | Signed | Hunter Harvey | — | Baltimore Orioles | Baltimore Orioles signed RHP Hunter Harvey. |
| Jun 25, 2013 | Signed | Josh Hart | — | Baltimore Orioles | Baltimore Orioles signed OF Josh Hart. |
| Jun 25, 2013 | Signed as free agent | Mike MacDougal | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Mike MacDougal to a minor league contract. |
| Jun 25, 2013 | Trade | Collin Cowgill | New York Mets | Los Angeles Angels | Burlington Bees Traded RF Kyle Johnson to Savannah Sand Gnats and New York Mets Traded CF Collin Cowgill to Los Angeles Angels. |
| Jun 25, 2013 | Signed | Jeff Thompson | — | Detroit Tigers | Detroit Tigers signed RHP Jeff Thompson. |
| Jun 25, 2013 | Signed | Chad Green | — | Detroit Tigers | Detroit Tigers signed RHP Chad Green. |
| Jun 25, 2013 | Signed | Chris Cotton | — | Houston Astros | Houston Astros signed LHP Chris Cotton. |
| Jun 25, 2013 | Signed | Adam Nelubowich | — | Houston Astros | Houston Astros signed 3B Adam Nelubowich. |
| Jun 25, 2013 | Signed | Ty Young | — | Tampa Bay Rays | Tampa Bay Rays signed 3B Tyler Young. |
| Jun 25, 2013 | Signed | Tyler Brosius | — | Atlanta Braves | Atlanta Braves signed RHP Tyler Brosius. |
| Jun 25, 2013 | Signed | Ian Stiffler | — | Atlanta Braves | Atlanta Braves signed RHP Ian Stiffler. |
| Jun 25, 2013 | Signed | Tyler Vail | — | Atlanta Braves | Atlanta Braves signed RHP Tyler Vail. |
| Jun 25, 2013 | Signed as free agent | Brandon Brown | — | Miami Marlins | Miami Marlins signed free agent C Brandon Brown to a minor league contract. |
| Jun 25, 2013 | Signed | Hunter Adkins | — | Athletics | Oakland Athletics signed RHP Hunter Adkins. |
| Jun 25, 2013 | Signed as free agent | Chris Rowley | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Chris Rowley to a minor league contract. |
| Jun 25, 2013 | Signed | Johnny Magliozzi | — | New York Mets | New York Mets signed RHP Johnny Magliozzi. |
| Jun 25, 2013 | Signed | Pat Young | — | San Francisco Giants | San Francisco Giants signed RHP Pat Young. |
| Jun 25, 2013 | Signed | Jonah Arenado | — | San Francisco Giants | San Francisco Giants signed 3B Jonah Arenado. |
| Jun 25, 2013 | Signed | Mike Connolly | — | San Francisco Giants | San Francisco Giants signed RHP Michael Connolly. |
| Jun 25, 2013 | Signed | Rayan Hernandez | — | San Francisco Giants | San Francisco Giants signed RHP Rayan Hernandez. |
| Jun 24, 2013 | Signed as free agent | Giancarlo Alvarado | — | New York Mets | New York Mets signed free agent RHP Giancarlo Alvarado to a minor league contract. |
| Jun 24, 2013 | Signed | Mason Katz | — | St. Louis Cardinals | St. Louis Cardinals signed 1B Mason Katz. |
| Jun 24, 2013 | Signed | Steven Farnworth | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Steven Farnworth. |
| Jun 24, 2013 | Signed as free agent | Joe Jiménez | — | Detroit Tigers | Detroit Tigers signed free agent RHP Joe Jimenez to a minor league contract. |
| Jun 24, 2013 | Signed | Thomas Milone | — | Tampa Bay Rays | Tampa Bay Rays signed OF Thomas Milone. |
| Jun 24, 2013 | Signed | Garrett Nuss | — | Los Angeles Angels | Los Angeles Angels signed RHP Garrett Nuss. |
| Jun 24, 2013 | Signed | Kevin Franklin | — | Cincinnati Reds | Cincinnati Reds signed 3B Kevin Franklin. |
| Jun 24, 2013 | Signed as free agent | Justin Choate | — | Tampa Bay Rays | Tampa Bay Rays signed free agent Justin Choate. |
| Jun 24, 2013 | Signed as free agent | Tom Jameson | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Tom Jameson to a minor league contract. |
| Jun 24, 2013 | Signed | Cody Stubbs | — | Kansas City Royals | Kansas City Royals signed 1B Cody Stubbs. |
| Jun 24, 2013 | Signed | Steven Farinaro | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Steven Farinaro. |
| Jun 24, 2013 | Signed | Josh Easley | — | Miami Marlins | Miami Marlins signed RHP Josh Easley. |
| Jun 24, 2013 | Signed as free agent | Dan Cevette | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Dan Cevette to a minor league contract. |
| Jun 23, 2013 | Signed as free agent | Damaso Espino | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Damaso Espino to a minor league contract. |
| Jun 23, 2013 | Signed | Sean Ratcliffe | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Sean Ratcliffe. |
| Jun 23, 2013 | Signed | Matt Dermody | — | Toronto Blue Jays | Toronto Blue Jays signed LHP Matt Dermody. |
| Jun 23, 2013 | Signed | Tyler Smith | — | Seattle Mariners | Seattle Mariners signed SS Tyler Smith. |
| Jun 23, 2013 | Signed | Spencer Navin | — | Los Angeles Dodgers | Los Angeles Dodgers signed C Spencer Navin. |
| Jun 23, 2013 | Signed as free agent | Casey Upperman | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Casey Upperman to a minor league contract. |
| Jun 23, 2013 | Signed | Hunter Green | — | Los Angeles Angels | Los Angeles Angels signed LHP Hunter Green. |
| Jun 23, 2013 | Signed as free agent | Jonathan Sánchez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Jonathan Sanchez to a minor league contract. |
| Jun 23, 2013 | Signed as free agent | Brent Bonvillain | — | Kansas City Royals | Kansas City Royals signed free agent LHP Brent Bonvillain to a minor league contract. |
| Jun 23, 2013 | Signed | Nick Rumbelow | — | New York Yankees | New York Yankees signed RHP Nick Rumbelow. |
| Jun 22, 2013 | Signed | Scott Frazier | — | Chicago Cubs | Chicago Cubs signed RHP Scott Frazier. |
| Jun 22, 2013 | Signed as free agent | Chris Bootcheck | — | New York Yankees | New York Yankees signed free agent RHP Chris Bootcheck to a minor league contract. |
| Jun 22, 2013 | Signed | Kyle Crockett | — | Cleveland Guardians | Cleveland Indians signed LHP Kyle Crockett. |
| Jun 22, 2013 | Signed | James Roberts | — | Cleveland Guardians | Cleveland Indians signed SS James Roberts. |
| Jun 22, 2013 | Released | Ramon Hernandez | — | Los Angeles Dodgers | Los Angeles Dodgers released C Ramon Hernandez. |
| Jun 22, 2013 | Signed as free agent | Brandon Cunniff | — | Atlanta Braves | Atlanta Braves signed free agent RHP Brandon Cunniff to a minor league contract. |
| Jun 22, 2013 | Signed | Kyle McGowin | — | Los Angeles Angels | Los Angeles Angels signed RHP Kyle McGowin. |
| Jun 22, 2013 | Signed | Joel Effertz | — | Miami Marlins | Miami Marlins signed RHP Joel Effertz. |
| Jun 22, 2013 | Signed | Devin Burke | — | Colorado Rockies | Colorado Rockies signed RHP Devin Burke. |
| Jun 22, 2013 | Signed | Danny Hayes | — | Chicago White Sox | Chicago White Sox signed 1B Danny Hayes. |
| Jun 21, 2013 | Signed | Nick Ciuffo | — | Tampa Bay Rays | Tampa Bay Rays signed C Nick Ciuffo. |
| Jun 21, 2013 | Signed | Trent Daniel | — | Colorado Rockies | Colorado Rockies signed LHP Trent Daniel. |
| Jun 21, 2013 | Signed | Eric Nedeljkovic | — | Colorado Rockies | Colorado Rockies signed RHP Eric Nedeljkovic. |
| Jun 21, 2013 | Trade | Yoshinori Tateyama | Texas Rangers | New York Yankees | Texas Rangers traded RHP Yoshinori Tateyama to New York Yankees. |
| Jun 21, 2013 | Signed | Sean Manaea | — | Kansas City Royals | Kansas City Royals signed LHP Sean Manaea. |
| Jun 21, 2013 | Signed | Bobby Wahl | — | Athletics | Oakland Athletics signed RHP Bobby Wahl. |
| Jun 21, 2013 | Signed | Dustin Driver | — | Athletics | Oakland Athletics signed RHP Dustin Driver. |
| Jun 21, 2013 | Signed | Edwin Díaz | — | Athletics | Oakland Athletics signed SS Edwin Diaz. |
| Jun 21, 2013 | Signed | Neil Kozikowski | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Neil Kozikowski. |
| Jun 21, 2013 | Signed | Jon Denney | — | Boston Red Sox | Boston Red Sox signed C Jon Denney. |
| Jun 21, 2013 | Signed | Jordon Austin | — | Boston Red Sox | Boston Red Sox signed OF Jordon Austin. |
| Jun 21, 2013 | Signed | Jake Drehoff | — | Boston Red Sox | Boston Red Sox signed LHP Jake Drehoff. |
| Jun 21, 2013 | Trade | Brent Lillibridge | Chicago Cubs | New York Yankees | Chicago Cubs traded 2B Brent Lillibridge to New York Yankees. |
| Jun 21, 2013 | Signed | Dace Kime | — | Cleveland Guardians | Cleveland Indians signed RHP Dace Kime. |
| Jun 21, 2013 | Signed | Kenny Mathews | — | Cleveland Guardians | Cleveland Indians signed LHP Kenny Mathews. |
| Jun 21, 2013 | Signed | Austin Wilson | — | Seattle Mariners | Seattle Mariners signed OF Austin Wilson. |
| Jun 21, 2013 | Signed | Lachlan Fontaine | — | Seattle Mariners | Seattle Mariners signed 3B Lachlan Fontaine. |
| Jun 21, 2013 | Signed as free agent | Chris Taladay | — | Detroit Tigers | Detroit Tigers signed free agent C Chris Taladay to a minor league contract. |
| Jun 21, 2013 | Signed | Kevin Ziomek | — | Detroit Tigers | Detroit Tigers signed LHP Kevin Ziomek. |
| Jun 21, 2013 | Signed | Austin Kubitza | — | Detroit Tigers | Detroit Tigers signed RHP Austin Kubitza. |
| Jun 21, 2013 | Signed | Omar Luna | — | Atlanta Braves | Atlanta Braves signed 2B Omar Luna. |
| Jun 21, 2013 | Signed | Jon Link | — | Detroit Tigers | Detroit Tigers signed RHP Jon Link. |
| Jun 21, 2013 | Signed as free agent | Aaron Gates | — | New York Yankees | New York Yankees signed free agent OF Aaron Gates to a minor league contract. |
| Jun 21, 2013 | Signed as free agent | Michael Mercurio | — | Kansas City Royals | Kansas City Royals signed free agent IF Michael Mercurio to a minor league contract. |
| Jun 21, 2013 | Signed as free agent | Tyler Kuhn | — | Colorado Rockies | Colorado Rockies signed free agent OF Tyler Kuhn to a minor league contract. |
| Jun 21, 2013 | Signed as free agent | Daniel Stange | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Daniel Stange to a minor league contract. |
| Jun 21, 2013 | Signed | David Denson | — | Milwaukee Brewers | Milwaukee Brewers signed 1B David Denson. |
| Jun 21, 2013 | Signed as free agent | Radley Haddad | — | New York Yankees | New York Yankees signed free agent C Radley Haddad to a minor league contract. |
| Jun 21, 2013 | Signed as free agent | Dimitri Papantonopoulos | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Dimitri Papantonopoulos to a minor league contract. |
| Jun 21, 2013 | Signed as free agent | David Reid-Foley | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C David Reid-Foley to a minor league contract. |
| Jun 21, 2013 | Signed | Joseph Monge | — | Boston Red Sox | Boston Red Sox signed OF Joseph Monge. |
| Jun 21, 2013 | Signed | Trevor Graham | — | Chicago Cubs | Chicago Cubs signed RHP Trevor Graham. |
| Jun 20, 2013 | Signed | Juan Gonzalez | — | Cleveland Guardians | Cleveland Indians signed C Juan Gonzalez. |
| Jun 20, 2013 | Signed | Chance Sisco | — | Baltimore Orioles | Baltimore Orioles signed C Chance Sisco. |
| Jun 20, 2013 | Signed | Jacob Hannemann | — | Chicago Cubs | Chicago Cubs signed OF Jacob Hannemann. |
| Jun 20, 2013 | Signed | David Garner | — | Chicago Cubs | Chicago Cubs signed RHP David Garner. |
| Jun 20, 2013 | Signed | Tyler Shryock | — | Chicago White Sox | Chicago White Sox signed SS Tyler Shryock. |
| Jun 20, 2013 | Signed | Joey Wagman | — | Chicago White Sox | Chicago White Sox signed RHP Joey Wagman. |
| Jun 20, 2013 | Signed | Malik Collymore | — | St. Louis Cardinals | St. Louis Cardinals signed Malik Collymore. |
| Jun 20, 2013 | Signed | Blake Higgins | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Blake Higgins. |
| Jun 20, 2013 | Signed | Michael Ratterree | — | Milwaukee Brewers | Milwaukee Brewers signed OF Michael Ratterree. |
| Jun 20, 2013 | Released | Kelly Shoppach | — | Seattle Mariners | Seattle Mariners released C Kelly Shoppach. |
| Jun 20, 2013 | Signed | Ty Boyles | — | Cincinnati Reds | Cincinnati Reds signed LHP Ty Boyles. |
| Jun 20, 2013 | Signed | Kelvin Freeman | — | Chicago Cubs | Chicago Cubs signed 1B Kelvin Freeman. |
| Jun 20, 2013 | Signed as free agent | Unnamed | — | New York Mets | New York Mets signed free agent C Luis Arrizurieta to a minor league contract. |
| Jun 20, 2013 | Signed as free agent | Dylan Hawkins | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Dylan Hawkins to a minor league contract. |
| Jun 20, 2013 | Signed as free agent | Lydell Moseby | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 1B Lydell Moseby to a minor league contract. |
| Jun 20, 2013 | Signed | Kean Wong | — | Tampa Bay Rays | Tampa Bay Rays signed 1B Kean Wong. |
| Jun 20, 2013 | Signed as free agent | Nathan Hass | — | Atlanta Braves | Atlanta Braves signed free agent C Nathan Hass to a minor league contract. |
| Jun 20, 2013 | Signed | Tanner Murphy | — | Atlanta Braves | Atlanta Braves signed C Tanner Murphy. |
| Jun 20, 2013 | Signed | Joseph Odom | — | Atlanta Braves | Atlanta Braves signed C Joseph Odom. |
| Jun 20, 2013 | Signed | Orrin Sears | — | Atlanta Braves | Atlanta Braves signed C Orrin Sears. |
| Jun 20, 2013 | Signed | Ian Hagenmiller | — | Atlanta Braves | Atlanta Braves signed 3B Ian Hagenmiller. |
| Jun 20, 2013 | Signed | Reed Harper | — | Atlanta Braves | Atlanta Braves signed SS Reed Harper. |
| Jun 20, 2013 | Signed | Connor Oliver | — | Atlanta Braves | Atlanta Braves signed OF Connor Oliver. |
| Jun 20, 2013 | Signed as free agent | Deivy Grullón | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Deivi Grullon to a minor league contract. |
| Jun 20, 2013 | Signed | Gosuke Katoh | — | New York Yankees | New York Yankees signed 2B Gosuke Katoh. |
| Jun 20, 2013 | Signed | Kevin Cornelius | — | New York Yankees | New York Yankees signed SS Kevin Cornelius. |
| Jun 20, 2013 | Signed | Eric Ruth | — | New York Yankees | New York Yankees signed RHP Eric Ruth. |
| Jun 20, 2013 | Signed | Chad Taylor | — | New York Yankees | New York Yankees signed RHP Chad Taylor. |
| Jun 20, 2013 | Signed | Ty Afenir | — | New York Yankees | New York Yankees signed SS Ty Afenir. |
| Jun 20, 2013 | Signed | Jordan Barnes | — | New York Yankees | New York Yankees signed OF Jordan Barnes. |
| Jun 20, 2013 | Signed as free agent | Wendell Rijo | — | Boston Red Sox | Boston Red Sox signed free agent SS Wendell Rijo to a minor league contract. |
| Jun 20, 2013 | Signed as free agent | Aaron King | — | Boston Red Sox | Boston Red Sox signed free agent OF Aaron King to a minor league contract. |
| Jun 20, 2013 | Signed | Tim Giel | — | New York Yankees | New York Yankees signed RHP Tim Giel. |
| Jun 20, 2013 | Signed | Alex Polanco | — | New York Yankees | New York Yankees signed RHP Alex Polanco. |
| Jun 20, 2013 | Signed as free agent | Luis Torrens | — | New York Yankees | New York Yankees signed free agent C Luis Torrens to a minor league contract. |
| Jun 20, 2013 | Signed | Kendall Coleman | — | New York Yankees | New York Yankees signed OF Kendall Coleman. |
| Jun 20, 2013 | Signed as free agent | Chris Matulis | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Chris Matulis to a minor league contract. |
| Jun 20, 2013 | Signed as free agent | Wilce Nieves | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Wilce Nieves to a minor league contract. |
| Jun 20, 2013 | Signed as free agent | Joe Bisenius | — | Atlanta Braves | Atlanta Braves signed free agent RHP Joe Bisenius to a minor league contract. |
| Jun 20, 2013 | Signed | Cody Harris | — | Miami Marlins | Miami Marlins signed RHP Cody Harris. |
| Jun 20, 2013 | Signed | Tyler Kinley | — | Miami Marlins | Miami Marlins signed RHP Tyler Kinley. |
| Jun 20, 2013 | Signed | Colby Suggs | — | Miami Marlins | Miami Marlins signed RHP Colby Suggs. |
| Jun 20, 2013 | Signed | Sean Townsley | — | Miami Marlins | Miami Marlins signed LHP Sean Townsley. |
| Jun 20, 2013 | Signed | Adam Westmoreland | — | Miami Marlins | Miami Marlins signed LHP Adam Westmoreland. |
| Jun 20, 2013 | Signed | Will White | — | Miami Marlins | Miami Marlins signed LHP Will White. |
| Jun 20, 2013 | Signed | Trevor Williams | — | Miami Marlins | Miami Marlins signed RHP Trevor Williams. |
| Jun 20, 2013 | Signed | Iramis Olivencia | — | Miami Marlins | Miami Marlins signed 1B Iramis Olivencia. |
| Jun 20, 2013 | Signed | Aaron Blanton | — | Miami Marlins | Miami Marlins signed SS Aaron Blanton. |
| Jun 20, 2013 | Signed | Juan Avila | — | Miami Marlins | Miami Marlins signed 3B Juan Avila. |
| Jun 20, 2013 | Signed | Miles Williams | — | Miami Marlins | Miami Marlins signed OF Miles Williams. |
| Jun 20, 2013 | Signed | K.J. Woods | — | Miami Marlins | Miami Marlins signed OF K.J. Woods. |
| Jun 20, 2013 | Signed as free agent | Cole Nelson | — | Atlanta Braves | Atlanta Braves signed free agent LHP Cole Nelson to a minor league contract. |
| Jun 20, 2013 | Signed | Chuck Buchanan | — | Atlanta Braves | Atlanta Braves signed LHP Chuck Buchanan. |
| Jun 20, 2013 | Signed | Jordan Sechler | — | Atlanta Braves | Atlanta Braves signed LHP Jordan Sechler. |
| Jun 20, 2013 | Signed as free agent | Franklin Barreto | — | Toronto Blue Jays | Toronto Blue Jays signed free agent Franklin Barreto. |
| Jun 20, 2013 | Signed as free agent | L.B. Dantzler | — | Toronto Blue Jays | Toronto Blue Jays signed free agent L.B. Dantzler. |
| Jun 20, 2013 | Signed as free agent | Christian Vazquez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent Christian Vazquez. |
| Jun 20, 2013 | Signed as free agent | Corey Gorman | — | Toronto Blue Jays | Toronto Blue Jays signed free agent LHP Corey Gorman to a minor league contract. |
| Jun 20, 2013 | Signed as free agent | Joe Lovecchio | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Joe Lovecchio to a minor league contract. |
| Jun 20, 2013 | Signed | Corey Littrell | — | Boston Red Sox | Boston Red Sox signed Corey Littrell. |
| Jun 20, 2013 | Signed as free agent | Andrew Clark | — | New York Yankees | New York Yankees signed free agent 1B Andrew Clark to a minor league contract. |
| Jun 20, 2013 | Signed as free agent | Corey Patterson | — | New York Yankees | New York Yankees signed free agent OF Corey Patterson to a minor league contract. |
| Jun 20, 2013 | Signed as free agent | Mike Zagurski | — | New York Yankees | New York Yankees signed free agent LHP Mike Zagurski to a minor league contract. |
| Jun 20, 2013 | Signed | Michael Lorenzen | — | Cincinnati Reds | Cincinnati Reds signed RHP Michael Lorenzen. |
| Jun 20, 2013 | Signed | José De León | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Jose De Leon. |
| Jun 20, 2013 | Signed | L.B. Dantzler | — | Toronto Blue Jays | Toronto Blue Jays signed 1B L.B. Dantzler. |
| Jun 20, 2013 | Signed | Christian Vazquez | — | Toronto Blue Jays | Toronto Blue Jays signed SS Christian Vazquez. |
| Jun 20, 2013 | Signed as free agent | Juan Francisco | — | Chicago Cubs | Chicago Cubs signed free agent RHP Juan Francisco to a minor league contract. |
| Jun 20, 2013 | Signed as free agent | Josh Davis | — | Chicago Cubs | Chicago Cubs signed free agent RHP Josh Davis to a minor league contract. |
| Jun 20, 2013 | Signed | Austin Nicely | — | Houston Astros | Houston Astros signed LHP Austin Nicely. |
| Jun 20, 2013 | Signed | Chase Edwards | — | Detroit Tigers | Detroit Tigers signed RHP Chase Edwards. |
| Jun 20, 2013 | Signed | Dan Slania | — | San Francisco Giants | San Francisco Giants signed RHP Dan Slania. |
| Jun 20, 2013 | Signed as free agent | Emerson Martinez | — | Texas Rangers | Texas Rangers signed free agent RHP Emerson Martinez to a minor league contract. |
| Jun 20, 2013 | Signed as free agent | Clayton Crum | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Clayton Crum to a minor league contract. |
| Jun 20, 2013 | Signed as free agent | Osiris Ramirez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Osiris Ramirez to a minor league contract. |
| Jun 20, 2013 | Signed as free agent | Jose Pujols | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RF Jose Pujols to a minor league contract. |
| Jun 19, 2013 | Trade | Eric Young Jr. | Colorado Rockies | New York Mets | Colorado Rockies traded LF Eric Young Jr. to New York Mets for RHP Collin McHugh. |
| Jun 19, 2013 | Signed | Trey Masek | — | Chicago Cubs | Chicago Cubs signed RHP Trey Masek. |
| Jun 19, 2013 | Signed | Trey Mancini | — | Baltimore Orioles | Baltimore Orioles signed 1B Trey Mancini. |
| Jun 19, 2013 | Signed | Austin Wynns | — | Baltimore Orioles | Baltimore Orioles signed C Austin Wynns. |
| Jun 19, 2013 | Signed | Randolph Gassaway | — | Baltimore Orioles | Baltimore Orioles signed 1B Randolph Gassaway. |
| Jun 19, 2013 | Signed | Dylan Rheault | — | Baltimore Orioles | Baltimore Orioles signed RHP Dylan Rheault. |
| Jun 19, 2013 | Signed | Donnie Hart | — | Baltimore Orioles | Baltimore Orioles signed LHP Donnie Hart. |
| Jun 19, 2013 | Signed | Justin Viele | — | Baltimore Orioles | Baltimore Orioles signed SS Justin Viele. |
| Jun 19, 2013 | Signed | Garrett Cortright | — | Baltimore Orioles | Baltimore Orioles signed RHP Garrett Cortright. |
| Jun 19, 2013 | Released | James Darnell | — | San Diego Padres | San Diego Padres released LF James Darnell. |
| Jun 19, 2013 | Signed | Trey Ball | — | Boston Red Sox | Boston Red Sox signed LHP Trey Ball. |
| Jun 19, 2013 | Signed | Bryan Hudson | — | Boston Red Sox | Boston Red Sox signed OF Bryan Hudson. |
| Jun 19, 2013 | Signed | Joe Gunkel | — | Boston Red Sox | Boston Red Sox signed Joe Gunkel. |
| Jun 19, 2013 | Signed | Jantzen Witte | — | Boston Red Sox | Boston Red Sox signed 3B Jantzen Witte. |
| Jun 19, 2013 | Signed | Danny Bethea | — | Boston Red Sox | Boston Red Sox signed C Danny Bethea. |
| Jun 19, 2013 | Signed | Jordan Hankins | — | Chicago Cubs | Chicago Cubs signed 2B Jordan Hankins. |
| Jun 19, 2013 | Signed | Kohl Stewart | — | Minnesota Twins | Minnesota Twins signed RHP Kohl Stewart. |
| Jun 19, 2013 | Signed | Nelson Molina | — | Minnesota Twins | Minnesota Twins signed SS Nelson Molina. |
| Jun 19, 2013 | Signed | Stuart Turner | — | Minnesota Twins | Minnesota Twins signed C Stuart Turner. |
| Jun 19, 2013 | Signed | Ethan Mildren | — | Minnesota Twins | Minnesota Twins signed RHP Ethan Mildren. |
| Jun 19, 2013 | Signed | Derrick Penilla | — | Minnesota Twins | Minnesota Twins signed LHP Derrick Penilla. |
| Jun 19, 2013 | Signed | Stephen Gonsalves | — | Minnesota Twins | Minnesota Twins signed LHP Stephen Gonsalves. |
| Jun 19, 2013 | Signed | Jared Wilson | — | Minnesota Twins | Minnesota Twins signed RHP Jared Wilson. |
| Jun 19, 2013 | Signed | Alex Swim | — | Minnesota Twins | Minnesota Twins signed C Alex Swim. |
| Jun 19, 2013 | Signed | Brian Navarreto | — | Minnesota Twins | Minnesota Twins signed C Brian Navarreto. |
| Jun 19, 2013 | Signed | Chad Christensen | — | Minnesota Twins | Minnesota Twins signed CF Chad Christensen. |
| Jun 19, 2013 | Signed | Brian Gilbert | — | Minnesota Twins | Minnesota Twins signed RHP Brian Gilbert. |
| Jun 19, 2013 | Signed | Brandon Peterson | — | Minnesota Twins | Minnesota Twins signed RHP Brandon Peterson. |
| Jun 19, 2013 | Signed | Mitch Garver | — | Minnesota Twins | Minnesota Twins signed C Mitch Garver. |
| Jun 19, 2013 | Signed | Zack Granite | — | Minnesota Twins | Minnesota Twins signed OF Zach Granite. |
| Jun 19, 2013 | Signed | Tanner Mendonca | — | Minnesota Twins | Minnesota Twins signed RHP Tanner Mendonca. |
| Jun 19, 2013 | Signed | C.K. Irby | — | Minnesota Twins | Minnesota Twins signed RHP C.K. Irby. |
| Jun 19, 2013 | Signed | Ryan Walker | — | Minnesota Twins | Minnesota Twins signed SS Ryan Walker. |
| Jun 19, 2013 | Signed | Tyler Stirewalt | — | Minnesota Twins | Minnesota Twins signed RHP Tyler Stirewalt. |
| Jun 19, 2013 | Signed | Brandon Easton | — | Minnesota Twins | Minnesota Twins signed LHP Brandon Easton. |
| Jun 19, 2013 | Signed | Tanner Vavra | — | Minnesota Twins | Minnesota Twins signed 2B Tanner Vavra. |
| Jun 19, 2013 | Signed | Carlos Avila | — | Minnesota Twins | Minnesota Twins signed SS Carlos Avila. |
| Jun 19, 2013 | Signed | Mark Appel | — | Houston Astros | Houston Astros signed RHP Mark Appel. |
| Jun 19, 2013 | Signed | Ryan Horstman | — | Seattle Mariners | Seattle Mariners signed LHP Ryan Horstman. |
| Jun 19, 2013 | Signed | Tyler Wright | — | Seattle Mariners | Seattle Mariners signed LHP Tyler Wright. |
| Jun 19, 2013 | Signed | Tommy Burns | — | Seattle Mariners | Seattle Mariners signed RHP Tommy Burns. |
| Jun 19, 2013 | Signed | Jordan Cowan | — | Seattle Mariners | Seattle Mariners signed SS Jordan Cowan. |
| Jun 19, 2013 | Signed | Paul Fry | — | Seattle Mariners | Seattle Mariners signed LHP Paul Fry. |
| Jun 19, 2013 | Signed | Michaelangelo Guzman | — | Seattle Mariners | Seattle Mariners signed LHP Michaelangelo Guzman. |
| Jun 19, 2013 | Signed | Zack Littell | — | Seattle Mariners | Seattle Mariners signed RHP Zack Littell. |
| Jun 19, 2013 | Signed | Kyle Petty | — | Seattle Mariners | Seattle Mariners signed C Kyle Petty. |
| Jun 19, 2013 | Signed | Daniel Torres | — | Seattle Mariners | Seattle Mariners signed C Daniel Torres. |
| Jun 19, 2013 | Signed | Justin Williams | — | Arizona Diamondbacks | Arizona Diamondbacks signed SS Justin Williams. |
| Jun 19, 2013 | Signed | Matt McPhearson | — | Arizona Diamondbacks | Arizona Diamondbacks signed OF Matt McPhearson. |
| Jun 19, 2013 | Signed | Kurtis Kostuk | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Kurtis Kostuk. |
| Jun 19, 2013 | Signed | Jamie Westbrook | — | Arizona Diamondbacks | Arizona Diamondbacks signed SS Jamie Westbrook. |
| Jun 19, 2013 | Signed | Brad Keller | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Brad Keller. |
| Jun 19, 2013 | Signed | Matt Vinson | — | Arizona Diamondbacks | Arizona Diamondbacks signed CF Matt Vinson. |
| Jun 19, 2013 | Signed | Tyler Toyfair | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Tyler Toyfair. |
| Jun 19, 2013 | Signed | Jacob Cordero | — | Arizona Diamondbacks | Arizona Diamondbacks signed OF Jacob Cordero. |
| Jun 19, 2013 | Signed | Dallas Newton | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Dallas Newton. |
| Jun 19, 2013 | Signed | Joel Thys | — | Arizona Diamondbacks | Arizona Diamondbacks signed C Joel Thys. |
| Jun 19, 2013 | Signed | George Roberts | — | Arizona Diamondbacks | Arizona Diamondbacks signed 1B George Roberts. |
| Jun 19, 2013 | Signed | George Roberts | — | Arizona Diamondbacks | Arizona Diamondbacks signed George Roberts. |
| Jun 19, 2013 | Signed | Marco Gonzales | — | St. Louis Cardinals | St. Louis Cardinals signed LHP Marco Gonzales. |
| Jun 19, 2013 | Signed | Josh VanMeter | — | San Diego Padres | San Diego Padres signed SS Josh VanMeter. |
| Jun 19, 2013 | Signed | Jake Bauers | — | San Diego Padres | San Diego Padres signed Jake Bauers. |
| Jun 19, 2013 | Signed | Adrian De Horta | — | San Diego Padres | San Diego Padres signed RHP Adrian De Horta. |
| Jun 19, 2013 | Signed | Tyler Dial | — | San Diego Padres | San Diego Padres signed C Tyler Dial. |
| Jun 19, 2013 | Signed | Dom Nuñez | — | Colorado Rockies | Colorado Rockies signed 2B Dom Nunez. |
| Jun 19, 2013 | Signed | Terry McClure | — | Colorado Rockies | Colorado Rockies signed OF Terry McClure. |
| Jun 19, 2013 | Signed | Sean Brady | — | Cleveland Guardians | Cleveland Indians signed LHP Sean Brady. |
| Jun 19, 2013 | Signed | Garrett Smith | — | Cleveland Guardians | Cleveland Indians signed 2B Garrett Smith. |
| Jun 19, 2013 | Signed | Darian Johnson | — | Chicago White Sox | Chicago White Sox signed OF Darian Johnson. |
| Jun 19, 2013 | Signed as free agent | Parker Hipp | — | Houston Astros | Houston Astros signed free agent SS Parker Hipp to a minor league contract. |
| Jun 19, 2013 | Signed as free agent | Ryan Connolly | — | Houston Astros | Houston Astros signed free agent RHP Ryan Connolly to a minor league contract. |
| Jun 19, 2013 | Signed | Charlie Sharrer | — | Chicago White Sox | Chicago White Sox signed RHP Charlie Sharrer. |
| Jun 19, 2013 | Signed | Brandon Bixler | — | Minnesota Twins | Minnesota Twins signed LHP Brandon Bixler. |
| Jun 19, 2013 | Signed | Audry Santana | — | Chicago White Sox | Chicago White Sox signed SS Audry Santana. |
| Jun 19, 2013 | Signed as free agent | Luis Montanez | — | Los Angeles Angels | Los Angeles Angels signed free agent LF Luis Montanez to a minor league contract. |
| Jun 19, 2013 | Signed | Tyler Bashlor | — | New York Mets | New York Mets signed RHP Tyler Bashlor. |
| Jun 19, 2013 | Signed | Robert Coles | — | New York Mets | New York Mets signed RHP Robert Coles. |
| Jun 19, 2013 | Signed | Ricardo Jacquez | — | New York Mets | New York Mets signed Ricardo Jacquez. |
| Jun 19, 2013 | Signed | Kevin Ferguson | — | Houston Astros | Houston Astros signed LHP Kevin Ferguson. |
| Jun 19, 2013 | Signed | Champ Stuart | — | New York Mets | New York Mets signed OF Champ Stuart. |
| Jun 19, 2013 | Signed | Zach Mathieu | — | New York Mets | New York Mets signed 1B Zach Mathieu. |
| Jun 19, 2013 | Signed | Jeff McNeil | — | New York Mets | New York Mets signed SS Jeff McNeil. |
| Jun 19, 2013 | Signed | Juan Santos | — | Houston Astros | Houston Astros signed RHP Juan Santos. |
| Jun 19, 2013 | Signed | John Costa | — | Washington Nationals | Washington Nationals signed RHP John Costa. |
| Jun 19, 2013 | Signed | Andrew Cooper | — | Washington Nationals | Washington Nationals signed RHP Andrew Cooper. |
| Jun 19, 2013 | Signed | Nick Pivetta | — | Washington Nationals | Washington Nationals signed RHP Nick Pivetta. |
| Jun 19, 2013 | Signed | John Simms | — | Washington Nationals | Washington Nationals signed RHP John Simms. |
| Jun 19, 2013 | Signed | Brandon Dixon | — | Los Angeles Dodgers | Los Angeles Dodgers signed 3B Brandon Dixon. |
| Jun 19, 2013 | Signed | Harmen Sidhu | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Harmen Sidhu. |
| Jun 19, 2013 | Signed as free agent | Tyler Stubblefield | — | San Diego Padres | San Diego Padres signed free agent 2B Tyler Stubblefield to a minor league contract. |
| Jun 19, 2013 | Signed as free agent | Eric Wooten | — | New York Yankees | New York Yankees signed free agent LHP Eric Wooten to a minor league contract. |
| Jun 19, 2013 | Signed | Justin Bohn | — | Miami Marlins | Miami Marlins signed SS Justin Bohn. |
| Jun 19, 2013 | Signed | Chad Wallach | — | Miami Marlins | Miami Marlins signed Chad Wallach. |
| Jun 19, 2013 | Signed | Carlos Lopez | — | Miami Marlins | Miami Marlins signed 1B Carlos Lopez. |
| Jun 19, 2013 | Signed as free agent | Reid Redman | — | Miami Marlins | Miami Marlins signed free agent 2B Reid Redman to a minor league contract. |
| Jun 19, 2013 | Signed | Jeff McKenzie | — | Chicago White Sox | Chicago White Sox signed LHP Jeffrey McKenzie. |
| Jun 19, 2013 | Signed as free agent | Arby Fields | — | Chicago White Sox | Chicago White Sox signed free agent OF Arby Fields to a minor league contract. |
| Jun 19, 2013 | Signed | Christian Stringer | — | Chicago White Sox | Chicago White Sox signed SS Christian Stringer. |
| Jun 19, 2013 | Signed | Joe Flattery | — | Detroit Tigers | Detroit Tigers signed LHP Joe Flattery. |
| Jun 19, 2013 | Signed as free agent | Tanner Rust | — | Baltimore Orioles | Baltimore Orioles signed free agent 1B Tanner Rust to a minor league contract. |
| Jun 19, 2013 | Signed | Jimmy Falla | — | New York Yankees | New York Yankees signed 1B Jimmy Falla. |
| Jun 19, 2013 | Signed | Sean Furney | — | Arizona Diamondbacks | Arizona Diamondbacks signed Sean Furney. |
| Jun 19, 2013 | Signed as free agent | Greg Zebrack | — | Washington Nationals | Washington Nationals signed free agent OF Greg Zebrack to a minor league contract. |
| Jun 19, 2013 | Signed | Crayton Bare | — | Los Angeles Dodgers | Los Angeles Dodgers signed LHP Crayton Bare. |
| Jun 19, 2013 | Signed | Scott Lieser | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Scott Lieser. |
| Jun 19, 2013 | Signed as free agent | Tyler Spurlin | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Tyler Spurlin to a minor league contract. |
| Jun 19, 2013 | Signed | Nick Keener | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Nick Keener. |
| Jun 19, 2013 | Signed | Rob Rogers | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Rob Rogers. |
| Jun 19, 2013 | Signed | Luis Aviles Jr. | — | Milwaukee Brewers | Milwaukee Brewers signed SS Luis Aviles. |
| Jun 19, 2013 | Signed | Van Grouw | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Justin Van Grouw. |
| Jun 19, 2013 | Signed | Mike Ahmed | — | Los Angeles Dodgers | Los Angeles Dodgers signed OF Michael Ahmed. |
| Jun 19, 2013 | Signed | Cody Bellinger | — | Los Angeles Dodgers | Los Angeles Dodgers signed 1B Cody Bellinger. |
| Jun 19, 2013 | Signed | Blake Hennessey | — | Los Angeles Dodgers | Los Angeles Dodgers signed SS Blake Hennessey. |
| Jun 19, 2013 | Signed | James McDonald | — | Los Angeles Dodgers | Los Angeles Dodgers signed SS James McDonald. |
| Jun 19, 2013 | Signed | Jared King | — | New York Mets | New York Mets signed OF Jared King. |
| Jun 19, 2013 | Signed | Gaither Bumgardner | — | New York Mets | New York Mets signed RHP Gaither Bumgardner. |
| Jun 19, 2013 | Signed | Andrew Church | — | New York Mets | New York Mets signed RHP Andrew Church. |
| Jun 19, 2013 | Signed | Cameron Griffin | — | New York Mets | New York Mets signed RHP Cameron Griffin. |
| Jun 19, 2013 | Signed | Dan Herrmann | — | New York Mets | New York Mets signed RHP Dan Herrmann. |
| Jun 19, 2013 | Signed | Brent McMinn | — | New York Mets | New York Mets signed RHP Brent McMinn. |
| Jun 19, 2013 | Signed | Casey Meisner | — | New York Mets | New York Mets signed Casey Meisner. |
| Jun 19, 2013 | Signed | Ty Williams | — | New York Mets | New York Mets signed RHP Ty Williams. |
| Jun 19, 2013 | Signed as free agent | Luis Arrizurieta | — | New York Mets | New York Mets signed free agent C Luis Arrizurieta to a minor league contract. |
| Jun 19, 2013 | Signed | Dominic Smith | — | New York Mets | New York Mets signed 1B Dominic Smith. |
| Jun 19, 2013 | Signed | Ivan Wilson | — | New York Mets | New York Mets signed OF Ivan Wilson. |
| Jun 19, 2013 | Signed | Christian Flecha | — | Kansas City Royals | Kansas City Royals signed LHP Christian Flecha. |
| Jun 19, 2013 | Signed | Mark Armstrong | — | Cincinnati Reds | Cincinnati Reds signed RHP Mark Armstrong. |
| Jun 19, 2013 | Signed | Chad Jones | — | Cincinnati Reds | Cincinnati Reds signed LHP Chad Jones. |
| Jun 19, 2013 | Signed | Tyler Mahle | — | Cincinnati Reds | Cincinnati Reds signed RHP Tyler Mahle. |
| Jun 19, 2013 | Signed as free agent | David Villegas | — | Chicago Cubs | Chicago Cubs signed free agent LHP David Villegas to a minor league contract. |
| Jun 19, 2013 | Signed | Fabian Roman | — | Cincinnati Reds | Cincinnati Reds signed RHP Fabian Roman. |
| Jun 19, 2013 | Signed | Jesse Hodges | — | Chicago Cubs | Chicago Cubs signed IF Jesse Hodges. |
| Jun 19, 2013 | Signed | Shed Long Jr. | — | Cincinnati Reds | Cincinnati Reds signed C Shedric Long. |
| Jun 19, 2013 | Signed | Joe Jocketty | — | Cincinnati Reds | Cincinnati Reds signed 3B Joe Jocketty. |
| Jun 19, 2013 | Signed | Cory Thompson | — | Cincinnati Reds | Cincinnati Reds signed SS Cory Thompson. |
| Jun 19, 2013 | Signed | Logan Uxa | — | Cincinnati Reds | Cincinnati Reds signed 1B Logan Uxa. |
| Jun 19, 2013 | Signed | Dalton Carter | — | Cincinnati Reds | Cincinnati Reds signed OF Dalton Carter. |
| Jun 19, 2013 | Signed | Dane McFarland | — | Arizona Diamondbacks | Arizona Diamondbacks signed OF Dane McFarland. |
| Jun 19, 2013 | Signed as free agent | Logan Davis | — | Kansas City Royals | Kansas City Royals signed free agent SS Logan Davis to a minor league contract. |
| Jun 19, 2013 | Signed | Lonnie Kauppila | — | Seattle Mariners | Seattle Mariners signed SS Lonnie Kauppila. |
| Jun 19, 2013 | Signed | Daniel Missaki | — | Seattle Mariners | Seattle Mariners signed Daniel Missaki. |
| Jun 19, 2013 | Signed | Ian Clarkin | — | New York Yankees | New York Yankees signed LHP Ian Clarkin. |
| Jun 19, 2013 | Signed | Conner Kendrick | — | New York Yankees | New York Yankees signed LHP Conner Kendrick. |
| Jun 19, 2013 | Signed | Gabe Speier | — | Boston Red Sox | Boston Red Sox signed Gabe Speier. |
| Jun 18, 2013 | Signed | Rob Zastryzny | — | Chicago Cubs | Chicago Cubs signed LHP Rob Zastryzny. |
| Jun 18, 2013 | Signed | Zack Godley | — | Chicago Cubs | Chicago Cubs signed Zack Godley. |
| Jun 18, 2013 | Signed | Cael Brockmeyer | — | Chicago Cubs | Chicago Cubs signed C Cael Brockmeyer. |
| Jun 18, 2013 | Signed | Giuseppe Papaccio | — | Chicago Cubs | Chicago Cubs signed SS Giuseppe Papaccio. |
| Jun 18, 2013 | Signed | Zak Blair | — | Chicago Cubs | Chicago Cubs signed 2B Zak Blair. |
| Jun 18, 2013 | Signed | Kevin Brown | — | Chicago Cubs | Chicago Cubs signed LF Kevin Brown. |
| Jun 18, 2013 | Signed | Tyler Ihrig | — | Chicago Cubs | Chicago Cubs signed LHP Tyler Ihrig. |
| Jun 18, 2013 | Signed | Zak Hermans | — | Chicago Cubs | Chicago Cubs signed RHP Zak Hermans. |
| Jun 18, 2013 | Signed | Reese McGuire | — | Pittsburgh Pirates | Pittsburgh Pirates signed C Reese McGuire. |
| Jun 18, 2013 | Signed | Garrett Cooper | — | Milwaukee Brewers | Milwaukee Brewers signed 1B Garrett Cooper. |
| Jun 18, 2013 | Signed | Omar Garcia | — | Milwaukee Brewers | Milwaukee Brewers signed CF Omar Garcia. |
| Jun 18, 2013 | Signed | Brandon Diaz | — | Milwaukee Brewers | Milwaukee Brewers signed CF Brandon Diaz. |
| Jun 18, 2013 | Signed | Tyler Linehan | — | Milwaukee Brewers | Milwaukee Brewers signed LHP Tyler Linehan. |
| Jun 18, 2013 | Signed | Andy Hillis | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Andy Hillis. |
| Jun 18, 2013 | Signed | Tanner Norton | — | Milwaukee Brewers | Milwaukee Brewers signed C Tanner Norton. |
| Jun 18, 2013 | Signed | Brandon Moore | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Brandon Moore. |
| Jun 18, 2013 | Signed | Clint Terry | — | Milwaukee Brewers | Milwaukee Brewers signed LHP Clint Terry. |
| Jun 18, 2013 | Signed | Tristan Archer | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Tristan Archer. |
| Jun 18, 2013 | Signed | Eric Williams | — | Milwaukee Brewers | Milwaukee Brewers signed CF Eric Williams. |
| Jun 18, 2013 | Signed | Chris Razo | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Chris Razo. |
| Jun 18, 2013 | Signed | Drew Ghelfi | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Drew Ghelfi. |
| Jun 18, 2013 | Signed | Alex Moore | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Alex Moore. |
| Jun 18, 2013 | Signed | Tanner Poppe | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Tanner Poppe. |
| Jun 18, 2013 | Signed | Dylan Brock | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Dylan Brock. |
| Jun 18, 2013 | Signed | Charlie Markson | — | Milwaukee Brewers | Milwaukee Brewers signed CF Charlie Markson. |
| Jun 18, 2013 | Signed | Jack Cleary | — | Milwaukee Brewers | Milwaukee Brewers signed C Jack Cleary. |
| Jun 18, 2013 | Signed as free agent | Chris Pettit | — | Baltimore Orioles | Baltimore Orioles signed free agent LF Chris Pettit to a minor league contract. |
| Jun 18, 2013 | Signed | Richy Pedroza | — | St. Louis Cardinals | St. Louis Cardinals signed SS Richy Pedroza. |
| Jun 18, 2013 | Signed | J.J. Altobelli | — | St. Louis Cardinals | St. Louis Cardinals signed SS J.J. Altobelli. |
| Jun 18, 2013 | Signed | Michael Holback | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Michael Holback. |
| Jun 18, 2013 | Signed | Will Anderson | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Will Anderson. |
| Jun 18, 2013 | Signed | Justin Ringo | — | St. Louis Cardinals | St. Louis Cardinals signed 1B Justin Ringo. |
| Jun 18, 2013 | Signed | Rob Kaminsky | — | St. Louis Cardinals | St. Louis Cardinals signed Rob Kaminsky. |
| Jun 18, 2013 | Signed as free agent | Kyle Grieshaber | — | St. Louis Cardinals | St. Louis Cardinals signed free agent 3B Kyle Grieshaber to a minor league contract. |
| Jun 18, 2013 | Signed as free agent | Frankie Rodriguez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C Frankie Rodriguez to a minor league contract. |
| Jun 18, 2013 | Signed | Coty Blanchard | — | Tampa Bay Rays | Tampa Bay Rays signed 2B Coty Blanchard. |
| Jun 18, 2013 | Signed | Darren Fischer | — | Tampa Bay Rays | Tampa Bay Rays signed LHP Darren Fischer. |
| Jun 18, 2013 | Signed | Josh Kimborowicz | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Josh Kimborowicz. |
| Jun 18, 2013 | Signed | D.J. Slaton | — | Tampa Bay Rays | Tampa Bay Rays signed RHP D.J. Slaton. |
| Jun 18, 2013 | Signed | Stone Speer | — | Tampa Bay Rays | Tampa Bay Rays signed LHP Stone Speer. |
| Jun 18, 2013 | Signed | Rick Teasley | — | Tampa Bay Rays | Tampa Bay Rays signed LHP Rick Teasley. |
| Jun 18, 2013 | Signed | Hunter Wood | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Hunter Wood. |
| Jun 18, 2013 | Signed | Christian Arroyo | — | San Francisco Giants | San Francisco Giants signed SS Christian Arroyo. |
| Jun 18, 2013 | Signed | Ryder Jones | — | San Francisco Giants | San Francisco Giants signed RHP Ryder Jones. |
| Jun 18, 2013 | Signed | Chase Johnson | — | San Francisco Giants | San Francisco Giants signed RHP Chase Johnson. |
| Jun 18, 2013 | Signed | Brian Ragira | — | San Francisco Giants | San Francisco Giants signed OF Brian Ragira. |
| Jun 18, 2013 | Signed | Brandon Bednar | — | San Francisco Giants | San Francisco Giants signed SS Brandon Bednar. |
| Jun 18, 2013 | Signed | Tyler Horan | — | San Francisco Giants | San Francisco Giants signed OF Tyler Horan. |
| Jun 18, 2013 | Signed | D.J. Snelten | — | San Francisco Giants | San Francisco Giants signed LHP Donald Snelten. |
| Jun 18, 2013 | Signed | Tyler Rogers | — | San Francisco Giants | San Francisco Giants signed RHP Tyler Rogers. |
| Jun 18, 2013 | Signed | Johneshwy Fargas | — | San Francisco Giants | San Francisco Giants signed OF Johneshwy Fargas. |
| Jun 18, 2013 | Signed | Nick Jones | — | San Francisco Giants | San Francisco Giants signed LHP Nick Jones. |
| Jun 18, 2013 | Signed | Rene Melendez | — | San Francisco Giants | San Francisco Giants signed C Rene Melendez. |
| Jun 18, 2013 | Signed | Brett Kay | — | San Francisco Giants | San Francisco Giants signed SS Brett Kay. |
| Jun 18, 2013 | Signed | Ethan Miller | — | San Francisco Giants | San Francisco Giants signed RHP Ethan Miller. |
| Jun 18, 2013 | Signed | Jake McCasland | — | San Francisco Giants | San Francisco Giants signed RHP Jacob McCasland. |
| Jun 18, 2013 | Signed | Dusten Knight | — | San Francisco Giants | San Francisco Giants signed RHP Dusten Knight. |
| Jun 18, 2013 | Signed | Ryan Tuntland | — | San Francisco Giants | San Francisco Giants signed 3B Ryan Tuntland. |
| Jun 18, 2013 | Signed | Craig Massoni | — | San Francisco Giants | San Francisco Giants signed 1B Craig Massoni. |
| Jun 18, 2013 | Signed | Will Callaway | — | San Francisco Giants | San Francisco Giants signed 2B Will Callaway. |
| Jun 18, 2013 | Signed | Scott Silverstein | — | Toronto Blue Jays | Toronto Blue Jays signed Scott Silverstein. |
| Jun 18, 2013 | Signed as free agent | Corey Rhoney | — | Kansas City Royals | Kansas City Royals signed free agent RHP Corey Rhoney to a minor league contract. |
| Jun 18, 2013 | Signed | Zane Evans | — | Kansas City Royals | Kansas City Royals signed C Zane Evans. |
| Jun 18, 2013 | Signed | J.P. Crawford | — | Philadelphia Phillies | Philadelphia Phillies signed SS J.P. Crawford. |
| Jun 18, 2013 | Signed | Jan Hernandez | — | Philadelphia Phillies | Philadelphia Phillies signed SS Jan Hernandez. |
| Jun 18, 2013 | Signed | Bud Jeter | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Bud Jeter. |
| Jun 18, 2013 | Signed | Steve Hathaway | — | Arizona Diamondbacks | Arizona Diamondbacks signed LHP Steve Hathaway. |
| Jun 18, 2013 | Signed | Adam Miller | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Adam Miller. |
| Jun 18, 2013 | Signed | Antonio Alvarez | — | Arizona Diamondbacks | Arizona Diamondbacks signed SS Antonio Alvarez. |
| Jun 18, 2013 | Signed | Jake Mayers | — | Arizona Diamondbacks | Arizona Diamondbacks signed 3B Jake Mayers. |
| Jun 18, 2013 | Signed | Jake Miller | — | Arizona Diamondbacks | Arizona Diamondbacks signed SS Jake Miller. |
| Jun 18, 2013 | Signed | Daniel Palka | — | Arizona Diamondbacks | Arizona Diamondbacks signed 1B Daniel Palka. |
| Jun 18, 2013 | Signed | Colin Bray | — | Arizona Diamondbacks | Arizona Diamondbacks signed OF Colin Bray. |
| Jun 18, 2013 | Signed | Will Mathis | — | Seattle Mariners | Seattle Mariners signed LHP Will Mathis. |
| Jun 18, 2013 | Signed | Eddie Campbell | — | Seattle Mariners | Seattle Mariners signed LHP Eddie Campbell. |
| Jun 18, 2013 | Signed | Troy Scott | — | Seattle Mariners | Seattle Mariners signed RHP Troy Scott. |
| Jun 18, 2013 | Signed | Zach Shank | — | Seattle Mariners | Seattle Mariners signed SS Zach Shank. |
| Jun 18, 2013 | Signed | Ian Miller | — | Seattle Mariners | Seattle Mariners signed OF Ian Miller. |
| Jun 18, 2013 | Signed | Jesse Weiss | — | Milwaukee Brewers | Milwaukee Brewers signed 1B Jesse Weiss. |
| Jun 18, 2013 | Signed | Tyler Alexander | — | Milwaukee Brewers | Milwaukee Brewers signed LHP Tyler Alexander. |
| Jun 18, 2013 | Signed as free agent | Harvey Martin | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Harvey Martin to a minor league contract. |
| Jun 18, 2013 | Signed | Johnny Shuttlesworth | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Johnny Shuttlesworth. |
| Jun 18, 2013 | Signed | Jordan Patterson | — | Colorado Rockies | Colorado Rockies signed OF Jordan Patterson. |
| Jun 18, 2013 | Signed | John Beck | — | Colorado Rockies | Colorado Rockies signed RHP John Beck. |
| Jun 18, 2013 | Signed | Scott Firth | — | Colorado Rockies | Colorado Rockies signed RHP Scott Firth. |
| Jun 18, 2013 | Signed | Jacob Newberry | — | Colorado Rockies | Colorado Rockies signed RHP Jacob Newberry. |
| Jun 18, 2013 | Signed as free agent | Ben Francisco | — | San Diego Padres | San Diego Padres signed free agent LF Ben Francisco to a minor league contract. |
| Jun 18, 2013 | Signed as free agent | Kyle Hunter | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Kyle Hunter to a minor league contract. |
| Jun 18, 2013 | Signed as free agent | Greg Terhune | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Greg Terhune to a minor league contract. |
| Jun 18, 2013 | Signed as free agent | Ricky Martinez | — | Los Angeles Angels | Los Angeles Angels signed free agent OF Ricky Martinez to a minor league contract. |
| Jun 18, 2013 | Signed as free agent | Drew Bowen | — | Chicago White Sox | Chicago White Sox signed free agent RHP Drew Bowen to a minor league contract. |
| Jun 18, 2013 | Signed as free agent | Anthony Usui | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Kamakani Usui to a minor league contract. |
| Jun 18, 2013 | Signed | Dariel Delgado | — | Baltimore Orioles | Baltimore Orioles signed RHP Dariel Delgado. |
| Jun 18, 2013 | Signed | Scott Silverstein | — | Toronto Blue Jays | Toronto Blue Jays signed LHP Scott Silverstein. |
| Jun 18, 2013 | Signed | Paul Paez | — | New York Mets | New York Mets signed LHP Paul Paez. |
| Jun 17, 2013 | Signed | Drew Ward | — | Washington Nationals | Washington Nationals signed 3B Drew Ward. |
| Jun 17, 2013 | Signed | Austin Voth | — | Washington Nationals | Washington Nationals signed RHP Austin Voth. |
| Jun 17, 2013 | Signed | Cory Bafidis | — | Washington Nationals | Washington Nationals signed LHP Cory Bafidis. |
| Jun 17, 2013 | Signed | Justin Thomas | — | Washington Nationals | Washington Nationals signed LHP Justin Thomas. |
| Jun 17, 2013 | Signed | Garrett Gordon | — | Washington Nationals | Washington Nationals signed OF Garrett Gordon. |
| Jun 17, 2013 | Signed | Matthew DeRosier | — | Washington Nationals | Washington Nationals signed RHP Matthew Derosier. |
| Jun 17, 2013 | Signed | Travis Ott | — | Washington Nationals | Washington Nationals signed Travis Ott. |
| Jun 17, 2013 | Signed | Joey Webb | — | Washington Nationals | Washington Nationals signed LHP Joseph Webb. |
| Jun 17, 2013 | Signed | Ryan Ullmann | — | Washington Nationals | Washington Nationals signed RHP Ryan Ullmann. |
| Jun 17, 2013 | Signed | Willie Medina | — | Washington Nationals | Washington Nationals signed SS Willie Medina. |
| Jun 17, 2013 | Signed | Jake Walsh | — | Washington Nationals | Washington Nationals signed LHP Jake Walsh. |
| Jun 17, 2013 | Signed | Ryon Healy | — | Athletics | Oakland Athletics signed 1B Ryon Healy. |
| Jun 17, 2013 | Signed | Kyle Finnegan | — | Athletics | Oakland Athletics signed RHP Kyle Finnegan. |
| Jun 17, 2013 | Signed | Devin Williams | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Devin Williams. |
| Jun 17, 2013 | Signed | Tucker Neuhaus | — | Milwaukee Brewers | Milwaukee Brewers signed SS Tucker Neuhaus. |
| Jun 17, 2013 | Signed | Barrett Astin | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Barrett Astin. |
| Jun 17, 2013 | Signed | Taylor Williams | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Taylor Williams. |
| Jun 17, 2013 | Signed | Josh Uhen | — | Milwaukee Brewers | Milwaukee Brewers signed RHP Josh Uhen. |
| Jun 17, 2013 | Signed as free agent | Randy Ruiz | — | New York Yankees | New York Yankees signed free agent DH Randy Ruiz to a minor league contract. |
| Jun 17, 2013 | Signed | Andrew Thurman | — | Houston Astros | Houston Astros signed Andrew Thurman. |
| Jun 17, 2013 | Signed as free agent | Jose Contreras | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Jose Contreras to a minor league contract. |
| Jun 17, 2013 | Signed | Victor Caratini | — | Atlanta Braves | Atlanta Braves signed Victor Caratini. |
| Jun 17, 2013 | Signed | Mikey Reynolds | — | Atlanta Braves | Atlanta Braves signed SS Mikey Reynolds. |
| Jun 17, 2013 | Signed | Jacob Schrader | — | Atlanta Braves | Atlanta Braves signed 1B Jacob Schrader. |
| Jun 17, 2013 | Signed | Kyle Wren | — | Atlanta Braves | Atlanta Braves signed OF Kyle Wren. |
| Jun 17, 2013 | Signed | Jared Dettmann | — | Atlanta Braves | Atlanta Braves signed LHP Jared Dettmann. |
| Jun 17, 2013 | Signed | Dakota Dill | — | Atlanta Braves | Atlanta Braves signed RHP Dakota Dill. |
| Jun 17, 2013 | Signed | Ryan Gunther | — | Atlanta Braves | Atlanta Braves signed RHP Ryan Gunther. |
| Jun 17, 2013 | Signed | Stephen Janas | — | Atlanta Braves | Atlanta Braves signed RHP Steve Janas. |
| Jun 17, 2013 | Signed | Matt Marksberry | — | Atlanta Braves | Atlanta Braves signed LHP Matt Marksberry. |
| Jun 17, 2013 | Signed | Michael Swanner | — | Atlanta Braves | Atlanta Braves signed RHP Michael Swanner. |
| Jun 17, 2013 | Signed | Andrew Waszak | — | Atlanta Braves | Atlanta Braves signed RHP Andrew Waszak. |
| Jun 17, 2013 | Signed | Óscar Mercado | — | St. Louis Cardinals | St. Louis Cardinals signed SS Oscar Mercado. |
| Jun 17, 2013 | Signed | Ricardo Bautista | — | St. Louis Cardinals | St. Louis Cardinals signed OF Ricardo Bautista. |
| Jun 17, 2013 | Signed | DeAndre Asbury-Heath | — | St. Louis Cardinals | St. Louis Cardinals signed OF DeAndre Asbury. |
| Jun 17, 2013 | Signed | Anthony Ray | — | St. Louis Cardinals | St. Louis Cardinals signed OF Anthony Ray. |
| Jun 17, 2013 | Signed as free agent | Brandon Lee | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Brandon Lee to a minor league contract. |
| Jun 17, 2013 | Signed | Jorge Perez | — | Houston Astros | Houston Astros signed RHP Jorge Perez. |
| Jun 17, 2013 | Signed | Tyler White | — | Houston Astros | Houston Astros signed 1B Tyler White. |
| Jun 17, 2013 | Released | Ramon E Ramirez | — | San Francisco Giants | San Francisco Giants released RHP Ramon Ramirez. |
| Jun 17, 2013 | Signed | Denver Chavez | — | Arizona Diamondbacks | Arizona Diamondbacks signed 2B Denver Chavez. |
| Jun 17, 2013 | Signed | Elvin Soto | — | Arizona Diamondbacks | Arizona Diamondbacks signed C Elvin Soto. |
| Jun 17, 2013 | Signed | Connor Harrell | — | Detroit Tigers | Detroit Tigers signed OF Connor Harrell. |
| Jun 17, 2013 | Signed as free agent | Kyle Attl | — | Washington Nationals | Washington Nationals signed free agent SS Kyle Attl to a minor league contract. |
| Jun 17, 2013 | Signed | Cole Wiper | — | Texas Rangers | Texas Rangers signed RHP Cole Wiper. |
| Jun 17, 2013 | Signed as free agent | Sean Smedley | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Sean Smedley to a minor league contract. |
| Jun 17, 2013 | Signed | Henry Hirsch | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Henry Hirsch. |
| Jun 17, 2013 | Signed | Ryan Henley | — | Tampa Bay Rays | Tampa Bay Rays signed 2B Ryan Henley. |
| Jun 17, 2013 | Signed | Hector Montes | — | Tampa Bay Rays | Tampa Bay Rays signed 3B Hector Montes. |
| Jun 17, 2013 | Signed | Steven Negron | — | Detroit Tigers | Detroit Tigers signed SS Steven Negron. |
| Jun 17, 2013 | Signed | Ethan Carnes | — | New York Yankees | New York Yankees signed LHP Ethan Carnes. |
| Jun 17, 2013 | Signed | Corey Knebel | — | Detroit Tigers | Detroit Tigers signed RHP Corey Knebel. |
| Jun 16, 2013 | Signed | Ben Heller | — | Cleveland Guardians | Cleveland Indians signed RHP Ben Heller. |
| Jun 16, 2013 | Signed as free agent | Mike Ekstrom | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Mike Ekstrom to a minor league contract. |
| Jun 16, 2013 | Signed | Arturo Reyes | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Arturo Reyes. |
| Jun 16, 2013 | Signed | Michael Schulze | — | St. Louis Cardinals | St. Louis Cardinals signed SS Michael Schulze. |
| Jun 16, 2013 | Signed | Kyle Farmer | — | Los Angeles Dodgers | Los Angeles Dodgers signed C Kyle Farmer. |
| Jun 16, 2013 | Signed | Henry Yates | — | Los Angeles Dodgers | Los Angeles Dodgers signed OF Hank Yates. |
| Jun 16, 2013 | Signed | Dillon Moyer | — | Los Angeles Dodgers | Los Angeles Dodgers signed SS Dillon Moyer. |
| Jun 16, 2013 | Signed | Brandon Trinkwon | — | Los Angeles Dodgers | Los Angeles Dodgers signed SS Brandon Trinkwon. |
| Jun 16, 2013 | Signed | James Baune | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP James Baune. |
| Jun 16, 2013 | Signed | Jake Fisher | — | Los Angeles Dodgers | Los Angeles Dodgers signed LHP Jake Fisher. |
| Jun 16, 2013 | Signed | Kyle Hooper | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Kyle Hooper. |
| Jun 16, 2013 | Signed | Michael Johnson | — | Los Angeles Dodgers | Los Angeles Dodgers signed LHP Michael Johnson. |
| Jun 16, 2013 | Signed | Jacob Rhame | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Jacob Rhame. |
| Jun 16, 2013 | Signed | J.D. Underwood | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP J.D. Underwood. |
| Jun 16, 2013 | Signed | Max Garner | — | Miami Marlins | Miami Marlins signed RHP Max Garner. |
| Jun 16, 2013 | Signed | C.J. Robinson | — | Miami Marlins | Miami Marlins signed RHP CJ Robinson. |
| Jun 16, 2013 | Signed | Scott Carcaise | — | Miami Marlins | Miami Marlins signed 1B Scott Carcaise. |
| Jun 16, 2013 | Signed | JT Riddle | — | Miami Marlins | Miami Marlins signed SS J.T. Riddle. |
| Jun 16, 2013 | Signed | Ryan Aper | — | Miami Marlins | Miami Marlins signed OF Ryan Aper. |
| Jun 16, 2013 | Signed | Matt Oberste | — | New York Mets | New York Mets signed 1B Matt Oberste. |
| Jun 16, 2013 | Signed | Jake Joyce | — | Washington Nationals | Washington Nationals signed RHP Jake Joyce. |
| Jun 16, 2013 | Signed | David Napoli | — | Washington Nationals | Washington Nationals signed LHP David Napoli. |
| Jun 16, 2013 | Signed | Niko Spezial | — | Washington Nationals | Washington Nationals signed LHP Niko Spezial. |
| Jun 16, 2013 | Signed | Michael Sylvestri | — | Washington Nationals | Washington Nationals signed RHP Michael Sylvestri. |
| Jun 16, 2013 | Signed | Cody Dent | — | Washington Nationals | Washington Nationals signed SS Cody Dent. |
| Jun 16, 2013 | Signed | Cody Gunter | — | Washington Nationals | Washington Nationals signed 3B Cody Gunter. |
| Jun 16, 2013 | Signed | David Masters | — | Washington Nationals | Washington Nationals signed SS David Masters. |
| Jun 16, 2013 | Signed | Jimmy Yezzo | — | Washington Nationals | Washington Nationals signed 1B James Yezzo. |
| Jun 16, 2013 | Signed | Isaac Ballou | — | Washington Nationals | Washington Nationals signed OF Isaac Ballou. |
| Jun 16, 2013 | Signed | Brennan Middleton | — | Washington Nationals | Washington Nationals signed SS Brennan Middleton. |
| Jun 16, 2013 | Signed | Andy Beresford | — | New York Yankees | New York Yankees signed RHP Andy Beresford. |
| Jun 16, 2013 | Signed | Cale Coshow | — | New York Yankees | New York Yankees signed RHP Cale Coshow. |
| Jun 16, 2013 | Signed | Tyler Webb | — | New York Yankees | New York Yankees signed LHP Tyler Webb. |
| Jun 16, 2013 | Signed | Javier Reynoso | — | Kansas City Royals | Kansas City Royals signed LHP Javier Reynoso. |
| Jun 16, 2013 | Signed | Andrew Edwards | — | Kansas City Royals | Kansas City Royals signed RHP Andrew Edwards. |
| Jun 16, 2013 | Signed | Jordan Mills | — | Houston Astros | Houston Astros signed LHP Jordan Mills. |
| Jun 16, 2013 | Signed | J.D. Osborne | — | Houston Astros | Houston Astros signed LHP J.D. Osborne. |
| Jun 16, 2013 | Signed | Tanner Mathis | — | Houston Astros | Houston Astros signed OF Tanner Mathis. |
| Jun 16, 2013 | Signed as free agent | Brett Clements | — | Houston Astros | Houston Astros signed free agent C Brett Clements to a minor league contract. |
| Jun 16, 2013 | Signed as free agent | Jack Mayfield | — | Houston Astros | Houston Astros signed free agent IF Jack Mayfield to a minor league contract. |
| Jun 16, 2013 | Signed | Kevin Guzman | — | Los Angeles Dodgers | Los Angeles Dodgers signed Kevin Guzman. |
| Jun 16, 2013 | Signed | Braden Shipley | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Braden Shipley. |
| Jun 15, 2013 | Signed | Cole Sulser | — | Cleveland Guardians | Cleveland Indians signed RHP Cole Sulser. |
| Jun 15, 2013 | Signed | Cody Yount | — | Chicago White Sox | Chicago White Sox signed 1B Cody Yount. |
| Jun 15, 2013 | Signed | Nick Parent | — | Chicago White Sox | Chicago White Sox signed 1B Nick Parent. |
| Jun 15, 2013 | Signed | Tyler Danish | — | Chicago White Sox | Chicago White Sox signed RHP Tyler Danish. |
| Jun 15, 2013 | Signed | Sam Macias | — | Chicago White Sox | Chicago White Sox signed OF Sam Macias. |
| Jun 15, 2013 | Signed | Sean Hagan | — | Chicago White Sox | Chicago White Sox signed LHP Sean Hagan. |
| Jun 15, 2013 | Signed | Jacob May | — | Chicago White Sox | Chicago White Sox signed OF Jacob May. |
| Jun 15, 2013 | Signed | Jon Bengard | — | Chicago White Sox | Chicago White Sox signed RHP Jon Bengard. |
| Jun 15, 2013 | Signed | Matt Abramson | — | Chicago White Sox | Chicago White Sox signed RHP Matt Abramson. |
| Jun 15, 2013 | Signed | Devin Moore | — | Chicago White Sox | Chicago White Sox signed RHP Devin Moore. |
| Jun 15, 2013 | Signed | Alex Powers | — | Chicago White Sox | Chicago White Sox signed RHP Alex Powers. |
| Jun 15, 2013 | Signed | Andrew Mitchell | — | Chicago White Sox | Chicago White Sox signed RHP Andrew Mitchell. |
| Jun 15, 2013 | Signed | Thaddius Lowry | — | Chicago White Sox | Chicago White Sox signed RHP Thaddius Lowry. |
| Jun 15, 2013 | Signed | Jacob Morris | — | Chicago White Sox | Chicago White Sox signed OF Jacob Morris. |
| Jun 15, 2013 | Signed | James Dykstra | — | Chicago White Sox | Chicago White Sox signed RHP James Dykstra. |
| Jun 15, 2013 | Signed | Trey Wimmer | — | Chicago White Sox | Chicago White Sox signed C Trey Wimmer. |
| Jun 15, 2013 | Signed | Trey Michalczewski | — | Chicago White Sox | Chicago White Sox signed 3B Trey Michalczewski. |
| Jun 15, 2013 | Signed | Nolan Earley | — | Chicago White Sox | Chicago White Sox signed OF Nolan Earley. |
| Jun 15, 2013 | Signed | Chris Freudenberg | — | Chicago White Sox | Chicago White Sox signed LHP Chris Freudenberg. |
| Jun 15, 2013 | Signed | Nick Blount | — | Chicago White Sox | Chicago White Sox signed RHP Nick Blount. |
| Jun 15, 2013 | Signed | Toby Thomas | — | Chicago White Sox | Chicago White Sox signed SS Toby Thomas. |
| Jun 15, 2013 | Signed | Brad Goldberg | — | Chicago White Sox | Chicago White Sox signed RHP Brad Goldberg. |
| Jun 15, 2013 | Signed | Dillon Haupt | — | Chicago White Sox | Chicago White Sox signed C Dillon Haupt. |
| Jun 15, 2013 | Signed | Michael Carballo | — | Chicago White Sox | Chicago White Sox signed OF Michael Carballo. |
| Jun 15, 2013 | Signed | Matt Ball | — | Chicago White Sox | Chicago White Sox signed Matt Ball. |
| Jun 15, 2013 | Signed | Tyler Barnette | — | Chicago White Sox | Chicago White Sox signed RHP Tyler Barnette. |
| Jun 15, 2013 | Signed | Andre Wheeler | — | Chicago White Sox | Chicago White Sox signed LHP Andre Wheeler. |
| Jun 15, 2013 | Signed | Clint Frazier | — | Cleveland Guardians | Cleveland Indians signed OF Clint Frazier. |
| Jun 15, 2013 | Signed as free agent | Dustin Richardson | — | Los Angeles Angels | Los Angeles Angels signed free agent LHP Dustin Richardson to a minor league contract. |
| Jun 15, 2013 | Signed | Dustin Peterson | — | San Diego Padres | San Diego Padres signed Dustin Peterson. |
| Jun 15, 2013 | Signed | Travis Remillard | — | San Diego Padres | San Diego Padres signed RHP Travis Remillard. |
| Jun 15, 2013 | Signed | Marcus Davis | — | San Diego Padres | San Diego Padres signed OF Marcus Davis. |
| Jun 15, 2013 | Signed | Thomas Pannone | — | Cleveland Guardians | Cleveland Indians signed Thomas Pannone. |
| Jun 15, 2013 | Signed | L.J. Mazzilli | — | New York Mets | New York Mets signed 2B L.J. Mazzilli. |
| Jun 15, 2013 | Signed | Kyle Bartsch | — | Kansas City Royals | Kansas City Royals signed Kyle Bartsch. |
| Jun 15, 2013 | Signed | Xavier Fernández | — | Kansas City Royals | Kansas City Royals signed C Xavier Fernandez. |
| Jun 15, 2013 | Signed | Alex Newman | — | Kansas City Royals | Kansas City Royals signed OF Alex Newman. |
| Jun 15, 2013 | Signed | John Farrell | — | Tampa Bay Rays | Tampa Bay Rays signed RHP John Farrell. |
| Jun 15, 2013 | Signed | Aaron Griffin | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Aaron Griffin. |
| Jun 15, 2013 | Signed | Ben Griset | — | Tampa Bay Rays | Tampa Bay Rays signed LHP Ben Griset. |
| Jun 15, 2013 | Signed | Ben Griset | — | Tampa Bay Rays | Tampa Bay Rays signed Ben Griset. |
| Jun 15, 2013 | Signed | Andrew Hanse | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Andrew Hanse. |
| Jun 15, 2013 | Signed | Cory Jordan | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Cory Jordan. |
| Jun 15, 2013 | Signed | Derek Loera | — | Tampa Bay Rays | Tampa Bay Rays signed LHP Derek Loera. |
| Jun 15, 2013 | Signed | Austin Pruitt | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Austin Pruitt. |
| Jun 15, 2013 | Signed | Colton Reavis | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Colton Reavis. |
| Jun 15, 2013 | Signed | Jaime Schultz | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Jaime Schultz. |
| Jun 15, 2013 | Signed as free agent | Corey MacDonald | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Corey MacDonald to a minor league contract. |
| Jun 15, 2013 | Signed | Pat Blair | — | Tampa Bay Rays | Tampa Bay Rays signed IF Pat Blair. |
| Jun 15, 2013 | Signed | Johnny Field | — | Tampa Bay Rays | Tampa Bay Rays signed 2B Johnny Field. |
| Jun 15, 2013 | Signed | Julian Ridings | — | Tampa Bay Rays | Tampa Bay Rays signed OF Julian Ridings. |
| Jun 15, 2013 | Signed | Colton Plaia | — | New York Mets | New York Mets signed C Colton Plaia. |
| Jun 15, 2013 | Signed | Ricky Knapp | — | New York Mets | New York Mets signed RHP Ricky Knapp. |
| Jun 15, 2013 | Signed | Kevin McGowan | — | New York Mets | New York Mets signed RHP Kevin McGowan. |
| Jun 15, 2013 | Signed | Juan Carlos Arias | — | Tampa Bay Rays | Tampa Bay Rays signed 3B Juan Carlos Arias. |
| Jun 15, 2013 | Signed | Zach Hayden | — | Minnesota Twins | Minnesota Twins signed RHP Zach Hayden. |
| Jun 15, 2013 | Signed | Jason Kanzler | — | Minnesota Twins | Minnesota Twins signed CF Jason Kanzler. |
| Jun 14, 2013 | Signed | Sam Dove | — | Philadelphia Phillies | Philadelphia Phillies signed 3B Sam Dove. |
| Jun 14, 2013 | Signed | Justin Parr | — | Philadelphia Phillies | Philadelphia Phillies signed OF Justin Parr. |
| Jun 14, 2013 | Signed | Shane Martin | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Shane Martin. |
| Jun 14, 2013 | Trade | Pedro Ciriaco | Boston Red Sox | San Diego Padres | Boston Red Sox traded SS Pedro Ciriaco to San Diego Padres. |
| Jun 14, 2013 | Signed | Jonathon Crawford | — | Detroit Tigers | Detroit Tigers signed RHP Jonathon Crawford. |
| Jun 14, 2013 | Signed | Buck Farmer | — | Detroit Tigers | Detroit Tigers signed RHP Buck Farmer. |
| Jun 14, 2013 | Signed | Calvin Drummond | — | Detroit Tigers | Detroit Tigers signed RHP Calvin Drummond. |
| Jun 14, 2013 | Signed | Zac Reininger | — | Detroit Tigers | Detroit Tigers signed RHP Zac Reininger. |
| Jun 14, 2013 | Signed | Kasey Coffman | — | Detroit Tigers | Detroit Tigers signed OF Kasey Coffman. |
| Jun 14, 2013 | Signed | Dominic Ficociello | — | Detroit Tigers | Detroit Tigers signed 1B Dominic Ficociello. |
| Jun 14, 2013 | Signed | Austin Green | — | Detroit Tigers | Detroit Tigers signed C Austin Green. |
| Jun 14, 2013 | Signed | Ben Verlander | — | Detroit Tigers | Detroit Tigers signed OF Ben Verlander. |
| Jun 14, 2013 | Signed | Duncan McAlpine | — | Detroit Tigers | Detroit Tigers signed C Duncan McAlpine. |
| Jun 14, 2013 | Signed | Jonathan Maciel | — | Detroit Tigers | Detroit Tigers signed RHP Jonathan Maciel. |
| Jun 14, 2013 | Signed | Austin Pritcher | — | Detroit Tigers | Detroit Tigers signed RHP Austin Pritcher. |
| Jun 14, 2013 | Signed | Curt Powell | — | Detroit Tigers | Detroit Tigers signed SS Curt Powell. |
| Jun 14, 2013 | Signed | Johnnie Kirkland | — | Detroit Tigers | Detroit Tigers signed RHP Johnnie Kirkland. |
| Jun 14, 2013 | Signed | Joe Mantiply | — | Detroit Tigers | Detroit Tigers signed LHP Joe Mantiply. |
| Jun 14, 2013 | Signed | Ryan Beck | — | Detroit Tigers | Detroit Tigers signed LHP Ryan Beck. |
| Jun 14, 2013 | Signed | Brett Huber | — | Detroit Tigers | Detroit Tigers signed RHP Brett Huber. |
| Jun 14, 2013 | Signed | Tanner Bailey | — | Detroit Tigers | Detroit Tigers signed RHP Tanner Bailey. |
| Jun 14, 2013 | Signed | Taylor Johnson | — | Detroit Tigers | Detroit Tigers signed 2B Taylor Johnson. |
| Jun 14, 2013 | Signed | Scott Sitz | — | Detroit Tigers | Detroit Tigers signed RHP Scott Sitz. |
| Jun 14, 2013 | Signed | Keynan Middleton | — | Los Angeles Angels | Los Angeles Angels signed RHP Keynan Middleton. |
| Jun 14, 2013 | Signed | Harrison Cooney | — | Los Angeles Angels | Los Angeles Angels signed RHP Harrison Cooney. |
| Jun 14, 2013 | Signed | Nate Smith | — | Los Angeles Angels | Los Angeles Angels signed LHP Nate Smith. |
| Jun 14, 2013 | Signed | Stephen McGee | — | Los Angeles Angels | Los Angeles Angels signed C Stephen McGee. |
| Jun 14, 2013 | Signed | Grant Gordon | — | Los Angeles Angels | Los Angeles Angels signed RHP Grant Gordon. |
| Jun 14, 2013 | Signed | Jonah Wesely | — | Los Angeles Angels | Los Angeles Angels signed LHP Jonah Wesely. |
| Jun 14, 2013 | Signed | Angel Rosa | — | Los Angeles Angels | Los Angeles Angels signed SS Angel Rosa. |
| Jun 14, 2013 | Signed | Riley Good | — | Los Angeles Angels | Los Angeles Angels signed OF Riley Good. |
| Jun 14, 2013 | Signed | Chad Hinshaw | — | Los Angeles Angels | Los Angeles Angels signed OF Chad Hinshaw. |
| Jun 14, 2013 | Signed | Ryan Etsell | — | Los Angeles Angels | Los Angeles Angels signed RHP Ryan Etsell. |
| Jun 14, 2013 | Signed | Cal Towey | — | Los Angeles Angels | Los Angeles Angels signed 3B Cal Towey. |
| Jun 14, 2013 | Signed | Garrett Cannizaro | — | Los Angeles Angels | Los Angeles Angels signed 2B Garrett Cannizaro. |
| Jun 14, 2013 | Signed | Cole Swanson | — | Los Angeles Angels | Los Angeles Angels signed LHP Cole Swanson. |
| Jun 14, 2013 | Signed | Brian Loconsole | — | Los Angeles Angels | Los Angeles Angels signed RHP Brian Loconsole. |
| Jun 14, 2013 | Signed | Alex Allbritton | — | Los Angeles Angels | Los Angeles Angels signed SS Alex Allbritton. |
| Jun 14, 2013 | Signed | Trevor Foss | — | Los Angeles Angels | Los Angeles Angels signed RHP Trevor Foss. |
| Jun 14, 2013 | Signed | Matt Hernandez | — | Los Angeles Angels | Los Angeles Angels signed LHP Matt Hernandez. |
| Jun 14, 2013 | Signed | Mark Shannon | — | Los Angeles Angels | Los Angeles Angels signed OF Mark Shannon. |
| Jun 14, 2013 | Signed | Alan Busenitz | — | Los Angeles Angels | Los Angeles Angels signed RHP Alan Busenitz. |
| Jun 14, 2013 | Signed | Kirby Pellant | — | Los Angeles Angels | Los Angeles Angels signed SS Kirby Pellant. |
| Jun 14, 2013 | Signed | Nathan Goro | — | Los Angeles Angels | Los Angeles Angels signed SS Nathan Goro. |
| Jun 14, 2013 | Signed | Michael Hermosillo | — | Los Angeles Angels | Los Angeles Angels signed OF Miguel Hermosillo. |
| Jun 14, 2013 | Signed | Michael Smith | — | Los Angeles Angels | Los Angeles Angels signed RHP Michael Smith. |
| Jun 14, 2013 | Signed | Cambric Moye | — | Los Angeles Angels | Los Angeles Angels signed C Cambric Moye. |
| Jun 14, 2013 | Signed | Taylor Johnson | — | Los Angeles Angels | Los Angeles Angels signed OF Taylor Johnson. |
| Jun 14, 2013 | Signed | Mike Fish | — | Los Angeles Angels | Los Angeles Angels signed OF Michael Fish. |
| Jun 14, 2013 | Signed | Colin O'Keefe | — | Los Angeles Angels | Los Angeles Angels signed LHP Colin O'Keefe. |
| Jun 14, 2013 | Signed | Eric Aguilera | — | Los Angeles Angels | Los Angeles Angels signed OF Eric Aguilera. |
| Jun 14, 2013 | Signed | Eric Weiss | — | Los Angeles Angels | Los Angeles Angels signed C Eric Weiss. |
| Jun 14, 2013 | Signed | Brandon Bayardi | — | Los Angeles Angels | Los Angeles Angels signed OF Brandon Bayardi. |
| Jun 14, 2013 | Signed | Alex Blackford | — | Los Angeles Angels | Los Angeles Angels signed RHP Alex Blackford. |
| Jun 14, 2013 | Signed | Clint Sharp | — | Los Angeles Angels | Los Angeles Angels signed RHP Clint Sharp. |
| Jun 14, 2013 | Signed | Dan Tobik | — | Los Angeles Angels | Los Angeles Angels signed RHP Dan Tobik. |
| Jun 14, 2013 | Signed | Ben Carlson | — | Los Angeles Angels | Los Angeles Angels signed RHP Ben Carlson. |
| Jun 14, 2013 | Signed | Andrew Knapp | — | Philadelphia Phillies | Philadelphia Phillies signed C Andrew Knapp. |
| Jun 14, 2013 | Signed | Jake Sweaney | — | Philadelphia Phillies | Philadelphia Phillies signed C Jake Sweaney. |
| Jun 14, 2013 | Signed | Trey Williams | — | Philadelphia Phillies | Philadelphia Phillies signed 3B Trey Williams. |
| Jun 14, 2013 | Signed | Casey Shane | — | Cleveland Guardians | Cleveland Indians signed RHP Casey Shane. |
| Jun 14, 2013 | Signed | Matt Whitehouse | — | Cleveland Guardians | Cleveland Indians signed LHP Matt Whitehouse. |
| Jun 14, 2013 | Signed | Chad Pinder | — | Athletics | Oakland Athletics signed 3B Chad Pinder. |
| Jun 14, 2013 | Signed | Alex Murphy | — | Baltimore Orioles | Baltimore Orioles signed C Alex Murphy. |
| Jun 14, 2013 | Signed | Caleb Kellogg | — | Baltimore Orioles | Baltimore Orioles signed RHP Caleb Kellogg. |
| Jun 14, 2013 | Signed | Nick Cunningham | — | Baltimore Orioles | Baltimore Orioles signed RHP Nick Cunningham. |
| Jun 14, 2013 | Signed | Jared Breen | — | Baltimore Orioles | Baltimore Orioles signed SS Jared Breen. |
| Jun 14, 2013 | Signed | Conor Bierfeldt | — | Baltimore Orioles | Baltimore Orioles signed OF Conor Bierfeldt. |
| Jun 14, 2013 | Signed | Jeff Kemp | — | Baltimore Orioles | Baltimore Orioles signed SS Jeff Kemp. |
| Jun 14, 2013 | Signed | Eric Green | — | Baltimore Orioles | Baltimore Orioles signed LHP Eric Green. |
| Jun 14, 2013 | Signed as free agent | Henry Blanco | — | Seattle Mariners | Seattle Mariners signed free agent C Henry Blanco. |
| Jun 14, 2013 | Signed | Mike Mayers | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Mike Mayers. |
| Jun 14, 2013 | Signed | Jimmy Bosco | — | St. Louis Cardinals | St. Louis Cardinals signed OF Jimmy Bosco. |
| Jun 14, 2013 | Signed as free agent | Brian Vigo-Suarez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent SS Brian Vigo to a minor league contract. |
| Jun 14, 2013 | Signed as free agent | Kyle Grana | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Kyle Grana to a minor league contract. |
| Jun 14, 2013 | Signed | Steven Brault | — | Baltimore Orioles | Baltimore Orioles signed Steven Brault. |
| Jun 14, 2013 | Signed | Steven Brault | — | Baltimore Orioles | Baltimore Orioles signed Steven Brault. |
| Jun 14, 2013 | Signed | Jimmy Yacabonis | — | Baltimore Orioles | Baltimore Orioles signed RHP Jimmy Yacabonis. |
| Jun 14, 2013 | Signed | Blake Taylor | — | Pittsburgh Pirates | Pittsburgh Pirates signed LHP Blake Taylor. |
| Jun 14, 2013 | Signed | Trae Arbet | — | Pittsburgh Pirates | Pittsburgh Pirates signed SS Trae Arbet. |
| Jun 14, 2013 | Signed | Shane Carle | — | Pittsburgh Pirates | Pittsburgh Pirates signed Shane Carle. |
| Jun 14, 2013 | Signed | Danny Collins | — | Pittsburgh Pirates | Pittsburgh Pirates signed 1B Danny Collins. |
| Jun 14, 2013 | Signed | Max Rossiter | — | Pittsburgh Pirates | Pittsburgh Pirates signed C Max Rossiter. |
| Jun 14, 2013 | Signed | Conrad Gregor | — | Houston Astros | Houston Astros signed OF Conrad Gregor. |
| Jun 14, 2013 | Signed | Jacob Nottingham | — | Houston Astros | Houston Astros signed Jacob Nottingham. |
| Jun 14, 2013 | Signed | Jon Kemmer | — | Houston Astros | Houston Astros signed OF Jon Kemmer. |
| Jun 14, 2013 | Signed | Ronnie Mitchell | — | Houston Astros | Houston Astros signed OF Ronnie Mitchell. |
| Jun 14, 2013 | Signed | Ryan McMahon | — | Colorado Rockies | Colorado Rockies signed 3B Ryan McMahon. |
| Jun 14, 2013 | Signed | Alex Balog | — | Colorado Rockies | Colorado Rockies signed RHP Alex Balog. |
| Jun 14, 2013 | Signed | Sam Moll | — | Colorado Rockies | Colorado Rockies signed LHP Sam Moll. |
| Jun 14, 2013 | Signed | Blake Shouse | — | Colorado Rockies | Colorado Rockies signed RHP Blake Shouse. |
| Jun 14, 2013 | Signed | Billy Waltrip | — | Colorado Rockies | Colorado Rockies signed LHP William Waltrip. |
| Jun 14, 2013 | Signed | Dylan Stamey | — | Colorado Rockies | Colorado Rockies signed RHP Dylan Stamey. |
| Jun 14, 2013 | Signed | Daniel Palo | — | Colorado Rockies | Colorado Rockies signed RHP Daniel Palo. |
| Jun 14, 2013 | Signed | Cole Norton | — | Colorado Rockies | Colorado Rockies signed OF Cole Norton. |
| Jun 14, 2013 | Signed | Sicnarf Loopstok | — | Cleveland Guardians | Cleveland Indians signed C Sicnarf Loopstok. |
| Jun 14, 2013 | Signed | Kerry Doane | — | Cleveland Guardians | Cleveland Indians signed RHP Kerry Doane. |
| Jun 14, 2013 | Signed as free agent | Ryan Mattes | — | Kansas City Royals | Kansas City Royals signed free agent RHP Ryan Mattes to a minor league contract. |
| Jun 14, 2013 | Signed | Billy McKinney | — | Athletics | Oakland Athletics signed CF Billy McKinney. |
| Jun 14, 2013 | Signed as free agent | Nate Orf | — | Milwaukee Brewers | Milwaukee Brewers signed free agent OF Nathan Orf to a minor league contract. |
| Jun 14, 2013 | Signed | Riley Unroe | — | Tampa Bay Rays | Tampa Bay Rays signed SS Riley Unroe. |
| Jun 14, 2013 | Signed as free agent | Alexander Melendez | — | Houston Astros | Houston Astros signed free agent OF Alexander Melendez to a minor league contract. |
| Jun 14, 2013 | Signed | William Allen | — | Washington Nationals | Washington Nationals signed OF William Allen. |
| Jun 14, 2013 | Signed | Augey Bill | — | Baltimore Orioles | Baltimore Orioles signed LHP Augey Bill. |
| Jun 14, 2013 | Signed | Luis Guillorme | — | New York Mets | New York Mets signed SS Luis Guillorme. |
| Jun 14, 2013 | Signed | Francys Peguero | — | Washington Nationals | Washington Nationals signed SS Francys Peguero. |
| Jun 14, 2013 | Signed | Sven Schüller | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Sven Schueller. |
| Jun 13, 2013 | Signed | Tony Kemp | — | Houston Astros | Houston Astros signed 2B Anthony Kemp. |
| Jun 13, 2013 | Signed | Jason Martin | — | Houston Astros | Houston Astros signed OF Jason Martin. |
| Jun 13, 2013 | Signed | Thomas Lindauer | — | Houston Astros | Houston Astros signed SS Thomas Lindauer. |
| Jun 13, 2013 | Signed | Albert Minnis | — | Houston Astros | Houston Astros signed LHP Albert Minnis. |
| Jun 13, 2013 | Signed | Austin Chrismon | — | Houston Astros | Houston Astros signed RHP Austin Chrismon. |
| Jun 13, 2013 | Signed | Pat Christensen | — | Houston Astros | Houston Astros signed RHP Patrick Christensen. |
| Jun 13, 2013 | Signed | Randall Fant | — | Houston Astros | Houston Astros signed LHP Randall Fant. |
| Jun 13, 2013 | Signed | Zach Morton | — | Houston Astros | Houston Astros signed RHP Zach Morton. |
| Jun 13, 2013 | Signed | Tyler Brunnemann | — | Houston Astros | Houston Astros signed RHP Tyler Brunnemann. |
| Jun 13, 2013 | Signed | Silento Sayles | — | Cleveland Guardians | Cleveland Indians signed OF Silento Sayles. |
| Jun 13, 2013 | Signed | Paul Hendrix | — | Cleveland Guardians | Cleveland Indians signed SS Paul Hendrix. |
| Jun 13, 2013 | Trade | Carl Thomore | Colorado Rockies | Chicago White Sox | Colorado Rockies traded OF Carl Thomore to Chicago White Sox. |
| Jun 13, 2013 | Signed | Sean Dwyer | — | Colorado Rockies | Colorado Rockies signed OF Sean Dwyer. |
| Jun 13, 2013 | Signed | Mike Tauchman | — | Colorado Rockies | Colorado Rockies signed OF Michael Tauchman. |
| Jun 13, 2013 | Signed | Michael Benjamin | — | Colorado Rockies | Colorado Rockies signed 3B Michael Benjamin. |
| Jun 13, 2013 | Signed | Konner Wade | — | Colorado Rockies | Colorado Rockies signed RHP Konner Wade. |
| Jun 13, 2013 | Signed | Jerad McCrummen | — | Colorado Rockies | Colorado Rockies signed RHP Jerad McCrummen. |
| Jun 13, 2013 | Signed | Matt Pierpont | — | Colorado Rockies | Colorado Rockies signed RHP Matt Pierpont. |
| Jun 13, 2013 | Signed | Alex Rodriguez | — | Colorado Rockies | Colorado Rockies signed LHP Alex Rodriguez. |
| Jun 13, 2013 | Signed | Alex De Leon | — | St. Louis Cardinals | St. Louis Cardinals signed C Alex De Leon. |
| Jun 13, 2013 | Signed | Chase Brookshire | — | St. Louis Cardinals | St. Louis Cardinals signed LHP Chase Brookshire. |
| Jun 13, 2013 | Signed | Andrew Pierce | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Andrew Pierce. |
| Jun 13, 2013 | Signed | Kyle Webb | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Kyle Webb. |
| Jun 13, 2013 | Signed as free agent | Zach Duke | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Zach Duke to a minor league contract. |
| Jun 13, 2013 | Signed | Patrick Murphy | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Patrick Murphy. |
| Jun 13, 2013 | Signed | Evan Smith | — | Toronto Blue Jays | Toronto Blue Jays signed LHP Evan Smith. |
| Jun 13, 2013 | Signed | Dan Lietz | — | Toronto Blue Jays | Toronto Blue Jays signed LHP Daniel Lietz. |
| Jun 13, 2013 | Signed | Conner Greene | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Conner Greene. |
| Jun 13, 2013 | Signed | Garrett Custons | — | Toronto Blue Jays | Toronto Blue Jays signed C Garrett Custons. |
| Jun 13, 2013 | Signed | Tim Mayza | — | Toronto Blue Jays | Toronto Blue Jays signed LHP Tim Mayza. |
| Jun 13, 2013 | Signed | Tim Locastro | — | Toronto Blue Jays | Toronto Blue Jays signed SS Tim Locastro. |
| Jun 13, 2013 | Signed | Jonathan Davis | — | Toronto Blue Jays | Toronto Blue Jays signed OF Jonathan Davis. |
| Jun 13, 2013 | Signed | Danny Jansen | — | Toronto Blue Jays | Toronto Blue Jays signed C Dan Jansen. |
| Jun 13, 2013 | Signed | Mike Reeves | — | Toronto Blue Jays | Toronto Blue Jays signed C Michael Reeves. |
| Jun 13, 2013 | Signed | Brenden Kalfus | — | Toronto Blue Jays | Toronto Blue Jays signed OF Brenden Kalfus. |
| Jun 13, 2013 | Signed | Sean Hurley | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Sean Hurley. |
| Jun 13, 2013 | Signed | Andrew Florides | — | Toronto Blue Jays | Toronto Blue Jays signed SS Andrew Florides. |
| Jun 13, 2013 | Signed | Garrett Pickens | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Garrett Pickens. |
| Jun 13, 2013 | Signed | David Harris | — | Toronto Blue Jays | Toronto Blue Jays signed SS David Harris. |
| Jun 13, 2013 | Signed | Brett Barber | — | Toronto Blue Jays | Toronto Blue Jays signed RHP Brett Barber. |
| Jun 13, 2013 | Signed as free agent | Cody Eppley | — | Minnesota Twins | Minnesota Twins signed free agent RHP Cody Eppley to a minor league contract. |
| Jun 13, 2013 | Signed | Jordan Parr | — | Arizona Diamondbacks | Arizona Diamondbacks signed 3B Jordan Parr. |
| Jun 13, 2013 | Signed | Grant Nelson | — | Arizona Diamondbacks | Arizona Diamondbacks signed C Grant Nelson. |
| Jun 13, 2013 | Signed | Randy McCurry | — | Arizona Diamondbacks | Arizona Diamondbacks signed SS Randy McCurry. |
| Jun 13, 2013 | Signed | Ryan Kinsella | — | Arizona Diamondbacks | Arizona Diamondbacks signed 1B Ryan Kinsella. |
| Jun 13, 2013 | Signed | Ryan Gebhardt | — | Arizona Diamondbacks | Arizona Diamondbacks signed SS Ryan Gebhardt. |
| Jun 13, 2013 | Signed | Zach Esquerra | — | Arizona Diamondbacks | Arizona Diamondbacks signed OF Zach Esquerra. |
| Jun 13, 2013 | Signed | Taylor Ratliff | — | Arizona Diamondbacks | Arizona Diamondbacks signed OF Taylor Ratliff. |
| Jun 13, 2013 | Signed | Alex Byo | — | Arizona Diamondbacks | Arizona Diamondbacks signed RHP Alex Byo. |
| Jun 13, 2013 | Signed | Forrestt Allday | — | Boston Red Sox | Boston Red Sox signed OF Forrestt Allday. |
| Jun 13, 2013 | Signed | Carlos Asuaje | — | Boston Red Sox | Boston Red Sox signed 2B Carlos Asuaje. |
| Jun 13, 2013 | Signed | Reed Gragnani | — | Boston Red Sox | Boston Red Sox signed 2B Reed Gragnani. |
| Jun 13, 2013 | Signed | Jake Romanski | — | Boston Red Sox | Boston Red Sox signed C Jake Romanski. |
| Jun 13, 2013 | Released | Jose Contreras | — | Pittsburgh Pirates | Pittsburgh Pirates released RHP Jose Contreras. |
| Jun 13, 2013 | Signed | Taylor Grover | — | Boston Red Sox | Boston Red Sox signed RHP Taylor Grover. |
| Jun 13, 2013 | Signed | Kyle Martin | — | Boston Red Sox | Boston Red Sox signed RHP Kyle Martin. |
| Jun 13, 2013 | Signed as free agent | Dennis Raben | — | Kansas City Royals | Kansas City Royals signed free agent 1B Dennis Raben to a minor league contract. |
| Jun 13, 2013 | Signed | Cody Dickson | — | Pittsburgh Pirates | Pittsburgh Pirates signed LHP Cody Dickson. |
| Jun 13, 2013 | Signed | Chad Kuhl | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Chad Kuhl. |
| Jun 13, 2013 | Signed | Beau Wallace | — | Pittsburgh Pirates | Pittsburgh Pirates signed 3B Beau Wallace. |
| Jun 13, 2013 | Signed | Justin Topa | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Justin Topa. |
| Jun 13, 2013 | Signed | Jeff Roy | — | Pittsburgh Pirates | Pittsburgh Pirates signed OF Jeff Roy. |
| Jun 13, 2013 | Signed | Brett McKinney | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Brett McKinney. |
| Jun 13, 2013 | Signed | Adam Landecker | — | Pittsburgh Pirates | Pittsburgh Pirates signed 2B Adam Landecker. |
| Jun 13, 2013 | Signed | Justin Maffei | — | Pittsburgh Pirates | Pittsburgh Pirates signed OF Justin Maffei. |
| Jun 13, 2013 | Signed | Michael Fransoso | — | Pittsburgh Pirates | Pittsburgh Pirates signed SS Michael Fransoso. |
| Jun 13, 2013 | Signed | Will Morris | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Will Morris. |
| Jun 13, 2013 | Signed | Geno Escalante | — | San Francisco Giants | San Francisco Giants signed C Eugene Escalante. |
| Jun 13, 2013 | Signed | David Ledbetter | — | Texas Rangers | Texas Rangers signed RHP David Ledbetter. |
| Jun 13, 2013 | Signed | Roberto Duran | — | Texas Rangers | Texas Rangers signed 3B Roberto Duran. |
| Jun 13, 2013 | Signed | Eric Jagielo | — | New York Yankees | New York Yankees signed SS Eric Jagielo. |
| Jun 13, 2013 | Signed | Tyler Wade | — | New York Yankees | New York Yankees signed SS Tyler Wade. |
| Jun 13, 2013 | Signed | David Palladino | — | New York Yankees | New York Yankees signed RHP David Palladino. |
| Jun 13, 2013 | Signed | John Murphy | — | New York Yankees | New York Yankees signed SS John Murphy. |
| Jun 13, 2013 | Signed | Dillon McNamara | — | New York Yankees | New York Yankees signed RHP Dillon McNamara. |
| Jun 13, 2013 | Signed | Michael O'Neill | — | New York Yankees | New York Yankees signed OF Michael O'Neill. |
| Jun 13, 2013 | Signed | Brandon Thomas | — | New York Yankees | New York Yankees signed OF Brandon Thomas. |
| Jun 13, 2013 | Signed | Joe Palumbo | — | Texas Rangers | Texas Rangers signed LHP Joe Palumbo. |
| Jun 13, 2013 | Signed as free agent | Piikea-Jiro Kitamura | — | Athletics | Oakland Athletics signed free agent SS Piikea-Jiro Kitamura to a minor league contract. |
| Jun 13, 2013 | Signed | Scott Brattvet | — | Cincinnati Reds | Cincinnati Reds signed RHP Scott Brattvet. |
| Jun 13, 2013 | Signed as free agent | Anthony Torres | — | San Diego Padres | San Diego Padres signed free agent SS Anthony Torres to a minor league contract. |
| Jun 13, 2013 | Signed | Carter Hope | — | Kansas City Royals | Kansas City Royals signed RHP Carter Hope. |
| Jun 13, 2013 | Signed as free agent | Colby Holmes | — | Atlanta Braves | Atlanta Braves signed free agent RHP Colby Holmes to a minor league contract. |
| Jun 13, 2013 | Signed | Sherman Lacrus | — | Texas Rangers | Texas Rangers signed SS Sherman Lacrus. |
| Jun 12, 2013 | Trade | Henry Alberto Rodriguez | Washington Nationals | Chicago Cubs | Washington Nationals traded RHP Henry Alberto Rodriguez to Chicago Cubs for RHP Ian Dickson and RHP Ian Dickson. |
| Jun 12, 2013 | Signed as free agent | Mark Lowe | — | Washington Nationals | Washington Nationals signed free agent RHP Mark Lowe to a minor league contract. |
| Jun 12, 2013 | Signed | Trevor Frank | — | Cleveland Guardians | Cleveland Indians signed RHP Trevor Frank. |
| Jun 12, 2013 | Signed | Shane Rowland | — | Cleveland Guardians | Cleveland Indians signed C Shane Rowland. |
| Jun 12, 2013 | Signed | Grant Fink | — | Cleveland Guardians | Cleveland Indians signed 3B Grant Fink. |
| Jun 12, 2013 | Signed | Mike Giuffre | — | Cleveland Guardians | Cleveland Indians signed 2B Mike Giuffre. |
| Jun 12, 2013 | Signed | Tim Anderson | — | Chicago White Sox | Chicago White Sox signed SS Tim Anderson. |
| Jun 12, 2013 | Signed | Ian McKinney | — | St. Louis Cardinals | St. Louis Cardinals signed LHP Ian McKinney. |
| Jun 12, 2013 | Signed | Jimmy Reed | — | St. Louis Cardinals | St. Louis Cardinals signed LHP Jimmy Reed. |
| Jun 12, 2013 | Signed | Chris Rivera | — | St. Louis Cardinals | St. Louis Cardinals signed SS Chris Rivera. |
| Jun 12, 2013 | Signed | Devante Lacy | — | St. Louis Cardinals | St. Louis Cardinals signed OF Devante Lacy. |
| Jun 12, 2013 | Signed | Blake McKnight | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Blake McKnight. |
| Jun 12, 2013 | Signed | Kevin Herget | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Kevin Herget. |
| Jun 12, 2013 | Signed | Chris Anderson | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Chris Anderson. |
| Jun 12, 2013 | Signed | Tom Windle | — | Los Angeles Dodgers | Los Angeles Dodgers signed LHP Tom Windle. |
| Jun 12, 2013 | Signed | Adam Law | — | Los Angeles Dodgers | Los Angeles Dodgers signed 3B Adam Law. |
| Jun 12, 2013 | Signed | Thomas Taylor | — | Los Angeles Dodgers | Los Angeles Dodgers signed RHP Thomas Taylor. |
| Jun 12, 2013 | Signed | Jon Gray | — | Colorado Rockies | Colorado Rockies signed RHP Jon Gray. |
| Jun 12, 2013 | Signed | Mason Smith | — | San Diego Padres | San Diego Padres signed CF Mason Smith. |
| Jun 12, 2013 | Signed | Rod Boykin | — | San Diego Padres | San Diego Padres signed CF Rod Boykin. |
| Jun 12, 2013 | Signed | Payton Baskette | — | San Diego Padres | San Diego Padres signed LHP Payton Baskette. |
| Jun 12, 2013 | Signed | Chris Long | — | San Diego Padres | San Diego Padres signed RHP Chris Long. |
| Jun 12, 2013 | Signed | Max Beatty | — | San Diego Padres | San Diego Padres signed RHP Max Beatty. |
| Jun 12, 2013 | Signed | Pete Kelich | — | San Diego Padres | San Diego Padres signed RHP Pete Kelich. |
| Jun 12, 2013 | Signed | Emilio Pagán | — | Seattle Mariners | Seattle Mariners signed RHP Emilio Pagan. |
| Jun 12, 2013 | Signed | Kevin McCoy | — | Seattle Mariners | Seattle Mariners signed RHP Kevin McCoy. |
| Jun 12, 2013 | Signed | Ricky Claudio | — | Seattle Mariners | Seattle Mariners signed LHP Ricky Claudio. |
| Jun 12, 2013 | Signed | Rafael Pineda | — | Seattle Mariners | Seattle Mariners signed RHP Rafael Pineda. |
| Jun 12, 2013 | Signed | Jake Zokan | — | Seattle Mariners | Seattle Mariners signed LHP Jake Zokan. |
| Jun 12, 2013 | Signed | D.J. Peterson | — | Seattle Mariners | Seattle Mariners signed 1B D.J. Peterson. |
| Jun 12, 2013 | Signed | Jack Reinheimer | — | Seattle Mariners | Seattle Mariners signed SS Jack Reinheimer. |
| Jun 12, 2013 | Signed | Justin Seager | — | Seattle Mariners | Seattle Mariners signed 1B Justin Seager. |
| Jun 12, 2013 | Signed | Jeff Zimmerman | — | Seattle Mariners | Seattle Mariners signed 1B Jeffrey Zimmerman. |
| Jun 12, 2013 | Signed | Tyler O'Neill | — | Seattle Mariners | Seattle Mariners signed C Tyler O'Neill. |
| Jun 12, 2013 | Signed | Corey Simpson | — | Seattle Mariners | Seattle Mariners signed C Corey Simpson. |
| Jun 12, 2013 | Signed | Chantz Mack | — | Seattle Mariners | Seattle Mariners signed OF Chantz Mack. |
| Jun 12, 2013 | Signed as free agent | Clay Rapada | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Clay Rapada to a minor league contract. |
| Jun 12, 2013 | Signed as free agent | C.J. Fick | — | Colorado Rockies | Colorado Rockies signed free agent RHP C.J. Fick to a minor league contract. |
| Jun 12, 2013 | Signed | Logan Pierce | — | Philadelphia Phillies | Philadelphia Phillies signed 1B Logan Pierce. |
| Jun 12, 2013 | Signed | Lee Ridenhour | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Lee Ridenhour. |
| Jun 12, 2013 | Signed | Rob Marcello | — | Philadelphia Phillies | Philadelphia Phillies signed LHP Rob Marcello. |
| Jun 12, 2013 | Signed | Matt Soren | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Matt Soren. |
| Jun 12, 2013 | Signed | Corey Bass | — | Philadelphia Phillies | Philadelphia Phillies signed C Corey Bass. |
| Jun 12, 2013 | Signed | Mark Meadors | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Mark Meadors. |
| Jun 12, 2013 | Signed | Mark Leiter Jr. | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Mark Leiter. |
| Jun 12, 2013 | Signed | David Whitehead | — | Philadelphia Phillies | Philadelphia Phillies signed David Whitehead. |
| Jun 12, 2013 | Signed | Nick Ferdinand | — | Philadelphia Phillies | Philadelphia Phillies signed OF Nick Ferdinand. |
| Jun 12, 2013 | Signed | Jon Prosinski | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Jon Prosinski. |
| Jun 12, 2013 | Signed | Daniel Gibson | — | Arizona Diamondbacks | Arizona Diamondbacks signed LHP Daniel Gibson. |
| Jun 12, 2013 | Signed | Trent Garrison | — | New York Yankees | New York Yankees signed C Trent Garrison. |
| Jun 12, 2013 | Signed as free agent | Eriberto Percel | — | Chicago White Sox | Chicago White Sox signed free agent RHP Eriberto Percel to a minor league contract. |
| Jun 12, 2013 | Signed | David Garcia | — | Tampa Bay Rays | Tampa Bay Rays signed 2B David Garcia. |
| Jun 12, 2013 | Signed | Layne Somsen | — | Cincinnati Reds | Cincinnati Reds signed RHP Layne Somsen. |
| Jun 12, 2013 | Signed | Cameron Griffin | — | Pittsburgh Pirates | Pittsburgh Pirates signed LHP Cameron Griffin. |
| Jun 12, 2013 | Signed | Jeremy Hadley | — | Tampa Bay Rays | Tampa Bay Rays signed OF Jeremy Hadley. |
| Jun 12, 2013 | Signed | Christopher O'Hare | — | Philadelphia Phillies | Philadelphia Phillies signed LHP Christopher O'Hare. |
| Jun 12, 2013 | Signed | Sam Alvis | — | Miami Marlins | Miami Marlins signed LHP Sam Alvis. |
| Jun 12, 2013 | Signed as free agent | Oscar Melendez | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Oscar Melendez to a minor league contract. |
| Jun 12, 2013 | Signed as free agent | Luis Ledo | — | Chicago White Sox | Chicago White Sox signed free agent RHP Luis Ledo to a minor league contract. |
| Jun 11, 2013 | Signed as free agent | Chien-Ming Wang | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Chien-Ming Wang. |
| Jun 11, 2013 | Signed | James Ramsay | — | Houston Astros | Houston Astros signed OF James Ramsay. |
| Jun 11, 2013 | Signed | Kyle Westwood | — | Houston Astros | Houston Astros signed RHP Kyle Westwood. |
| Jun 11, 2013 | Signed | Sebastian Kessay | — | Houston Astros | Houston Astros signed LHP Sebastian Kessay. |
| Jun 11, 2013 | Signed | Brett Booth | — | Houston Astros | Houston Astros signed C Brett Booth. |
| Jun 11, 2013 | Signed | Amalani Fukofuka | — | Kansas City Royals | Kansas City Royals signed OF Amalani Fukofuka. |
| Jun 11, 2013 | Signed | Luke Farrell | — | Kansas City Royals | Kansas City Royals signed RHP Luke Farrell. |
| Jun 11, 2013 | Signed | Daniel Rockett | — | Kansas City Royals | Kansas City Royals signed OF Daniel Rockett. |
| Jun 11, 2013 | Signed | Brandon Dulin | — | Kansas City Royals | Kansas City Royals signed 1B Brandon Dulin. |
| Jun 11, 2013 | Signed | Jonathan Dziedzic | — | Kansas City Royals | Kansas City Royals signed LHP Jonathan Dziedzic. |
| Jun 11, 2013 | Signed | Chase Darhower | — | Kansas City Royals | Kansas City Royals signed RHP Chase Darhower. |
| Jun 11, 2013 | Signed | Dominique Taylor | — | Kansas City Royals | Kansas City Royals signed OF Dominique Taylor. |
| Jun 11, 2013 | Signed | Kevin McCarthy | — | Kansas City Royals | Kansas City Royals signed RHP Kevin McCarthy. |
| Jun 11, 2013 | Signed | Kevin Perez | — | Kansas City Royals | Kansas City Royals signed RHP Kevin Perez. |
| Jun 11, 2013 | Signed | Glenn Sparkman | — | Kansas City Royals | Kansas City Royals signed RHP Glenn Sparkman. |
| Jun 11, 2013 | Signed | Andrew Brockett | — | Kansas City Royals | Kansas City Royals signed RHP Andrew Brockett. |
| Jun 11, 2013 | Signed | Frank Schwindel | — | Kansas City Royals | Kansas City Royals signed C Frank Schwindel. |
| Jun 11, 2013 | Signed | Riley King | — | Kansas City Royals | Kansas City Royals signed OF Riley King. |
| Jun 11, 2013 | Signed | Kevin Kuntz | — | Kansas City Royals | Kansas City Royals signed SS Kevin Kuntz. |
| Jun 11, 2013 | Signed | Alex Black | — | Kansas City Royals | Kansas City Royals signed RHP Alex Black. |
| Jun 11, 2013 | Signed | Andrew Ayers | — | Kansas City Royals | Kansas City Royals signed 2B Andrew Ayers. |
| Jun 11, 2013 | Signed | Chris Kohler | — | Athletics | Oakland Athletics signed LHP Chris Kohler. |
| Jun 11, 2013 | Signed | Dylan Covey | — | Athletics | Oakland Athletics signed RHP Dylan Covey. |
| Jun 11, 2013 | Signed | Tyler Marincov | — | Athletics | Oakland Athletics signed OF Tyler Marincov. |
| Jun 11, 2013 | Signed | Matt Stalcup | — | Athletics | Oakland Athletics signed LHP Matt Stalcup. |
| Jun 11, 2013 | Signed | Jerad Grundy | — | Athletics | Oakland Athletics signed LHP Jerad Grundy. |
| Jun 11, 2013 | Signed | Lou Trivino III | — | Athletics | Oakland Athletics signed RHP Lou Trivino. |
| Jun 11, 2013 | Signed | Dakota Freese | — | Athletics | Oakland Athletics signed RHP Dakota Freese. |
| Jun 11, 2013 | Signed | Justin Higley | — | Athletics | Oakland Athletics signed OF Justin Higley. |
| Jun 11, 2013 | Signed | Junior Mendez | — | Athletics | Oakland Athletics signed RHP Junior Mendez. |
| Jun 11, 2013 | Signed | Jaycob Brugman | — | Athletics | Oakland Athletics signed OF Jaycob Brugman. |
| Jun 11, 2013 | Signed | Sam Bragg | — | Athletics | Oakland Athletics signed RHP Sam Bragg. |
| Jun 11, 2013 | Signed | Scott Masik | — | Athletics | Oakland Athletics signed OF Scott Masik. |
| Jun 11, 2013 | Signed | Trevor Bayless | — | Athletics | Oakland Athletics signed OF Trevor Bayless. |
| Jun 11, 2013 | Signed | Josh Miller | — | Athletics | Oakland Athletics signed C Josh Miller. |
| Jun 11, 2013 | Signed | Kevin Johnson | — | Athletics | Oakland Athletics signed RHP Kevin Johnson. |
| Jun 11, 2013 | Signed | Jonathan Massad | — | Athletics | Oakland Athletics signed RHP Jonathan Massad. |
| Jun 11, 2013 | Signed | Kyle Wheeler | — | Athletics | Oakland Athletics signed C Kyle Wheeler. |
| Jun 11, 2013 | Signed | Ryan Huck | — | Athletics | Oakland Athletics signed 1B Ryan Huck. |
| Jun 11, 2013 | Signed | Joe Bennie | — | Athletics | Oakland Athletics signed 2B Joe Bennie. |
| Jun 11, 2013 | Signed | Blake McMullen | — | Athletics | Oakland Athletics signed RHP Blake McMullen. |
| Jun 11, 2013 | Signed | Ben McQuown | — | Athletics | Oakland Athletics signed OF Ben McQuown. |
| Jun 11, 2013 | Signed | A.J. Burke | — | Athletics | Oakland Athletics signed RHP A.J. Burke. |
| Jun 11, 2013 | Signed | Dominique Vattuone | — | Athletics | Oakland Athletics signed RHP Dominique Vattuone. |
| Jun 11, 2013 | Signed | Joseph Michaud | — | Athletics | Oakland Athletics signed RHP Joseph Michaud. |
| Jun 11, 2013 | Signed | A.J. Kubala | — | Athletics | Oakland Athletics signed 1B A.J. Kubala. |
| Jun 11, 2013 | Signed | Nick Petree | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Nick Petree. |
| Jun 11, 2013 | Signed | Elier Rodriguez | — | St. Louis Cardinals | St. Louis Cardinals signed C Elier Rodriguez. |
| Jun 11, 2013 | Signed | Zach Loraine | — | St. Louis Cardinals | St. Louis Cardinals signed RHP Zach Loraine. |
| Jun 11, 2013 | Signed | Luke Voit | — | St. Louis Cardinals | St. Louis Cardinals signed C Luke Voit. |
| Jun 11, 2013 | Signed | Jake Stone | — | St. Louis Cardinals | St. Louis Cardinals signed 1B Jake Stone. |
| Jun 11, 2013 | Signed | Nick Lomascolo | — | St. Louis Cardinals | St. Louis Cardinals signed LHP Nick Lomascolo. |
| Jun 11, 2013 | Signed | Vaughn Bryan | — | St. Louis Cardinals | St. Louis Cardinals signed OF Vaughn Bryan. |
| Jun 11, 2013 | Signed | Cody Reed | — | Kansas City Royals | Kansas City Royals signed Cody Reed. |
| Jun 11, 2013 | Signed | Adam Cimber | — | San Diego Padres | San Diego Padres signed RHP Adam Cimber. |
| Jun 11, 2013 | Signed | Jeffery Enloe | — | San Diego Padres | San Diego Padres signed LHP Jeffrey Enloe. |
| Jun 11, 2013 | Signed | Brandon Fry | — | San Diego Padres | San Diego Padres signed LHP Brandon Fry. |
| Jun 11, 2013 | Signed | Trevor Gott | — | San Diego Padres | San Diego Padres signed RHP Trevor Gott. |
| Jun 11, 2013 | Signed | Justin Livengood | — | San Diego Padres | San Diego Padres signed RHP Justin Livengood. |
| Jun 11, 2013 | Signed | Kyle Lloyd | — | San Diego Padres | San Diego Padres signed RHP Kyle Lloyd. |
| Jun 11, 2013 | Signed | Josh Richardson | — | San Diego Padres | San Diego Padres signed RHP Josh Richardson. |
| Jun 11, 2013 | Signed | Erik Schoenrock | — | San Diego Padres | San Diego Padres signed LHP Erik Schoenrock. |
| Jun 11, 2013 | Signed | Bryan Verbitsky | — | San Diego Padres | San Diego Padres signed RHP Bryan Verbitsky. |
| Jun 11, 2013 | Signed | Michael Miller | — | San Diego Padres | San Diego Padres signed C Michael Miller. |
| Jun 11, 2013 | Signed | Ryan Miller | — | San Diego Padres | San Diego Padres signed C Ryan Miller. |
| Jun 11, 2013 | Signed | Michael Bass | — | San Diego Padres | San Diego Padres signed 2B Michael Bass. |
| Jun 11, 2013 | Signed | Chase Jensen | — | San Diego Padres | San Diego Padres signed SS Chase Jensen. |
| Jun 11, 2013 | Signed | Trae Santos | — | San Diego Padres | San Diego Padres signed 1B Trae Santos. |
| Jun 11, 2013 | Signed as free agent | Mike Gilmartin | — | Washington Nationals | Washington Nationals signed free agent 3B Mike Gilmartin to a minor league contract. |
| Jun 11, 2013 | Signed as free agent | Mark Serrano | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Mark Serrano to a minor league contract. |
| Jun 11, 2013 | Signed | Cody Forsythe | — | Philadelphia Phillies | Philadelphia Phillies signed LHP Cody Forsythe. |
| Jun 11, 2013 | Signed | Chris Burgess | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Chris Burgess. |
| Jun 11, 2013 | Signed | Tyler Buckley | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Tyler Buckley. |
| Jun 11, 2013 | Signed | Matt Southard | — | Philadelphia Phillies | Philadelphia Phillies signed RHP Matt Southard. |
| Jun 11, 2013 | Signed | Kale Sumner | — | New York Yankees | New York Yankees signed C Kale Sumner. |
| Jun 11, 2013 | Signed | Daniel Crespo | — | New York Yankees | New York Yankees signed 2B Hector Crespo. |
| Jun 11, 2013 | Signed | Derek Toadvine | — | New York Yankees | New York Yankees signed 2B Derek Toadvine. |
| Jun 11, 2013 | Signed | Sam Agnew-Wieland | — | New York Yankees | New York Yankees signed RHP Sam Agnew-Wieland. |
| Jun 11, 2013 | Signed | Ben Lively | — | Cincinnati Reds | Cincinnati Reds signed Ben Lively. |
| Jun 11, 2013 | Signed | Daniel Wright | — | Cincinnati Reds | Cincinnati Reds signed RHP Daniel Wright. |
| Jun 11, 2013 | Signed | Taylor Terrasas | — | Cincinnati Reds | Cincinnati Reds signed SS Taylor Terrasas. |
| Jun 11, 2013 | Signed | Caleb Smith | — | New York Yankees | New York Yankees signed LHP Caleb Smith. |
| Jun 11, 2013 | Signed | Blake Miller | — | San Francisco Giants | San Francisco Giants signed SS Blake Miller. |
| Jun 10, 2013 | Signed | Hunter Dozier | — | Kansas City Royals | Kansas City Royals signed SS Hunter Dozier. |
| Jun 10, 2013 | Signed | Phillip Ervin | — | Cincinnati Reds | Cincinnati Reds signed OF Phillip Ervin. |
| Jun 10, 2013 | Signed | Chi Chi González | — | Texas Rangers | Texas Rangers signed RHP Alex Gonzalez. |
| Jun 10, 2013 | Signed | Travis Demeritte | — | Texas Rangers | Texas Rangers signed 2B Travis Demeritte. |
| Jun 10, 2013 | Signed | Ryan Cordell | — | Texas Rangers | Texas Rangers signed OF Ryan Cordell. |
| Jun 10, 2013 | Signed | David Gates | — | Texas Rangers | Texas Rangers signed RHP David Gates. |
| Jun 10, 2013 | Signed | Justin Sprenger | — | Texas Rangers | Texas Rangers signed RHP Justin Sprenger. |
| Jun 10, 2013 | Signed | Akeem Bostick | — | Texas Rangers | Texas Rangers signed RHP Akeem Bostick. |
| Jun 10, 2013 | Trade | John McDonald | Pittsburgh Pirates | Cleveland Guardians | Pittsburgh Pirates traded SS John McDonald to Cleveland Indians. |
| Jun 10, 2013 | Released | Jon Garland | — | Colorado Rockies | Colorado Rockies released RHP Jon Garland. |
| Jun 10, 2013 | Released | Henry Blanco | — | Toronto Blue Jays | Toronto Blue Jays released C Henry Blanco. |
| Jun 10, 2013 | Signed as free agent | David Pauley | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP David Pauley to a minor league contract. |
| Jun 10, 2013 | Signed as free agent | Mike Recchia | — | Chicago White Sox | Chicago White Sox signed free agent RHP Mike Recchia to a minor league contract. |
| Jun 10, 2013 | Released | Zach Duke | — | Washington Nationals | Washington Nationals released LHP Zach Duke. |
| Jun 10, 2013 | Signed | Hyrum Formo | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Hyrum Formo. |
| Jun 10, 2013 | Signed | Patrick Biondi | — | New York Mets | New York Mets signed OF Patrick Biondi. |
| Jun 10, 2013 | Signed | Philip Walby | — | New York Yankees | New York Yankees signed RHP Philip Walby. |
| Jun 9, 2013 | Trade | Vinnie Catricala | Seattle Mariners | Athletics | Seattle Mariners traded 3B Vinnie Catricala to Oakland Athletics. |
| Jun 9, 2013 | Signed | Joe Jackson | — | Texas Rangers | Texas Rangers signed C Joe Jackson. |
| Jun 9, 2013 | Signed | Evan Van Hoosier | — | Texas Rangers | Texas Rangers signed 2B Evan Van Hoosier. |
| Jun 9, 2013 | Signed | Derek Thompson | — | Texas Rangers | Texas Rangers signed LHP Derek Thompson. |
| Jun 9, 2013 | Signed | Marcus Greene Jr. | — | Texas Rangers | Texas Rangers signed C Marcus Greene. |
| Jun 9, 2013 | Signed | Travis Dean | — | Texas Rangers | Texas Rangers signed RHP Travis Dean. |
| Jun 9, 2013 | Signed | Isiah Kiner-Falefa | — | Texas Rangers | Texas Rangers signed SS Isiah Kiner-Falefa. |
| Jun 9, 2013 | Signed | Sam Wolff | — | Texas Rangers | Texas Rangers signed SS Sam Wolff. |
| Jun 9, 2013 | Signed | Nick Gardewine | — | Texas Rangers | Texas Rangers signed RHP Nick Gardewine. |
| Jun 9, 2013 | Signed | Jose Samayoa | — | Texas Rangers | Texas Rangers signed RHP Jose Samayoa. |
| Jun 9, 2013 | Signed | John Straka | — | Texas Rangers | Texas Rangers signed RHP John Straka. |
| Jun 9, 2013 | Signed | Easton Napiontek | — | Texas Rangers | Texas Rangers signed RHP Easton Napiontek. |
| Jun 9, 2013 | Signed | Ryan Ledbetter | — | Texas Rangers | Texas Rangers signed RHP Ryan Ledbetter. |
| Jun 9, 2013 | Signed as free agent | Alvin Herrera | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Alvin Herrera to a minor league contract. |
| Jun 9, 2013 | Signed | Cord Sandberg | — | Philadelphia Phillies | Philadelphia Phillies signed OF Cord Sandberg. |
| Jun 9, 2013 | Signed | Joe Mantoni | — | Cincinnati Reds | Cincinnati Reds signed RHP Joe Mantoni. |
| Jun 9, 2013 | Signed | Roel Ramírez | — | Tampa Bay Rays | Tampa Bay Rays signed RHP Roel Ramirez. |
| Jun 9, 2013 | Signed | Cody Crabaugh | — | Miami Marlins | Miami Marlins signed RHP Cody Crabaugh. |
| Jun 9, 2013 | Signed | Edward Cruz | — | Miami Marlins | Miami Marlins signed RHP Edward Cruz. |
| Jun 8, 2013 | Signed as free agent | Chris Snyder | — | Baltimore Orioles | Baltimore Orioles signed free agent C Chris Snyder to a minor league contract. |
| Jun 8, 2013 | Signed as free agent | Mike Colla | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Mike Colla to a minor league contract. |
| Jun 8, 2013 | Signed as free agent | Jason Jaramillo | — | Seattle Mariners | Seattle Mariners signed free agent C Jason Jaramillo to a minor league contract. |
| Jun 8, 2013 | Signed as free agent | Todd McDonald | — | Texas Rangers | Texas Rangers signed free agent OF Todd McDonald to a minor league contract. |
| Jun 8, 2013 | Signed | Tyler Olson | — | Seattle Mariners | Seattle Mariners signed LHP Tyler Olson. |
| Jun 8, 2013 | Signed | Jake Sanchez | — | Chicago White Sox | Chicago White Sox signed RHP Jake Sanchez. |
| Jun 7, 2013 | Signed as free agent | J.C. Romero | — | Cleveland Guardians | Cleveland Indians signed free agent LHP J.C. Romero to a minor league contract. |
| Jun 7, 2013 | Signed | Jake Johansen | — | Washington Nationals | Washington Nationals signed RHP Jake Johansen. |
| Jun 7, 2013 | Signed as free agent | David Cales | — | Chicago White Sox | Chicago White Sox signed free agent RHP David Cales to a minor league contract. |
| Jun 6, 2013 | Released | Mark Lowe | — | Los Angeles Angels | Los Angeles Angels released RHP Mark Lowe. |
| Jun 6, 2013 | Signed as free agent | Michael Nix | — | Chicago White Sox | Chicago White Sox signed free agent RHP Michael Nix to a minor league contract. |
| Jun 6, 2013 | Signed as free agent | Corey Wimberly | — | Cincinnati Reds | Cincinnati Reds signed free agent OF Corey Wimberly to a minor league contract. |
| Jun 5, 2013 | Signed as free agent | Jesus Torres | — | Colorado Rockies | Colorado Rockies signed free agent RHP Jesus Torres to a minor league contract. |
| Jun 5, 2013 | Signed as free agent | Axel Cordero | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Axel Cordero to a minor league contract. |
| Jun 5, 2013 | Signed as free agent | Boanerges Nova | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Boanerges Nova to a minor league contract. |
| Jun 5, 2013 | Signed as free agent | Matt Colantonio | — | Cleveland Guardians | Cleveland Indians signed free agent C Matt Colantonio to a minor league contract. |
| Jun 4, 2013 | Signed as free agent | Ryan Buch | — | Colorado Rockies | Colorado Rockies signed free agent RHP Ryan Buch to a minor league contract. |
| Jun 4, 2013 | Signed as free agent | Jesus Flores | — | Tampa Bay Rays | Tampa Bay Rays signed free agent C Jesus Flores to a minor league contract. |
| Jun 4, 2013 | Signed as free agent | Anderson Placido | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Anderson Placido to a minor league contract. |
| Jun 4, 2013 | Signed as free agent | Caleb Brewer | — | Minnesota Twins | Minnesota Twins signed free agent RHP Caleb Brewer to a minor league contract. |
| Jun 4, 2013 | Signed as free agent | Salvador Jerez | — | Chicago Cubs | Chicago Cubs signed free agent RHP Salvador Jerez to a minor league contract. |
| Jun 4, 2013 | Signed as free agent | Enrique De Los Rios | — | Chicago Cubs | Chicago Cubs signed free agent RHP Enrique De Los Rio to a minor league contract. |
| Jun 4, 2013 | Signed as free agent | Paddy Matera | — | Cleveland Guardians | Cleveland Indians signed free agent 3B Paddy Matera to a minor league contract. |
| Jun 4, 2013 | Signed as free agent | Juan Fuente | — | Toronto Blue Jays | Toronto Blue Jays signed free agent OF Juan Fuente to a minor league contract. |
| Jun 4, 2013 | Signed as free agent | Carlos Reyes | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Carlos Reyes to a minor league contract. |
| Jun 4, 2013 | Signed as free agent | Walter Rasquin | — | New York Mets | New York Mets signed free agent C Walter Rasquin to a minor league contract. |
| Jun 3, 2013 | Trade | Juan Francisco | Atlanta Braves | Milwaukee Brewers | Atlanta Braves traded 1B Juan Francisco to Milwaukee Brewers for LHP Thomas Keeling. |
| Jun 3, 2013 | Released | Álex González | — | Milwaukee Brewers | Milwaukee Brewers released 1B Alex Gonzalez. |
| Jun 3, 2013 | Signed as free agent | Mike Cervenak | — | Detroit Tigers | Detroit Tigers signed free agent 3B Mike Cervenak to a minor league contract. |
| Jun 3, 2013 | Signed as free agent | Mitch Atkins | — | Atlanta Braves | Atlanta Braves signed free agent RHP Mitch Atkins to a minor league contract. |
| Jun 3, 2013 | Signed as free agent | Shane Dyer | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Shane Dyer to a minor league contract. |
| Jun 3, 2013 | Released | Edinson Rincon | — | San Diego Padres | San Diego Padres released Edinson Rincon. |
| Jun 3, 2013 | Released | Ben Francisco | — | New York Yankees | New York Yankees released LF Ben Francisco. |
| Jun 3, 2013 | Signed as free agent | Jon Rauch | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Jon Rauch to a minor league contract. |
| Jun 3, 2013 | Signed as free agent | Tommy Manzella | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Tommy Manzella to a minor league contract. |
| Jun 3, 2013 | Signed as free agent | Juan Heredia | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Juan Heredia to a minor league contract. |
| Jun 3, 2013 | Signed as free agent | Yu Chang | — | Cleveland Guardians | Cleveland Indians signed free agent SS Yu Chang to a minor league contract. |
| Jun 2, 2013 | Trade | Francisco Martinez | Seattle Mariners | Detroit Tigers | Seattle Mariners traded 3B Francisco Martinez to Detroit Tigers. |
| Jun 1, 2013 | Signed | Luis Terrero | — | Texas Rangers | Texas Rangers signed SS Luis Terrero. |
| Jun 1, 2013 | Signed | Ronny Carvajal | — | Texas Rangers | Texas Rangers signed OF Ronny Carvajal. |
| Jun 1, 2013 | Signed | Jesus Perez | — | Pittsburgh Pirates | Pittsburgh Pirates signed RHP Jesus Perez. |
| Jun 1, 2013 | Signed as free agent | Gerardo Navarro | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Gerardo Navarro to a minor league contract. |
| Jun 1, 2013 | Signed as free agent | Chase Lambin | — | Kansas City Royals | Kansas City Royals signed free agent 3B Chase Lambin to a minor league contract. |
| Jun 1, 2013 | Signed as free agent | Alexander Palma | — | New York Yankees | New York Yankees signed free agent OF Alexander Palma to a minor league contract. |
| Jun 1, 2013 | Signed as free agent | Anderson Severino | — | New York Yankees | New York Yankees signed free agent LHP Anderson Severino to a minor league contract. |
| May 31, 2013 | Signed as free agent | Chris Jakubauskas | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Chris Jakubauskas to a minor league contract. |
| May 31, 2013 | Released | Chad Durbin | — | Philadelphia Phillies | Philadelphia Phillies released RHP Chad Durbin. |
| May 31, 2013 | Signed as free agent | Robertson Valdez | — | Chicago White Sox | Chicago White Sox signed free agent 1B Robertson Valdez to a minor league contract. |
| May 31, 2013 | Signed as free agent | Daris Vargas | — | New York Yankees | New York Yankees signed free agent RHP Daris Vargas to a minor league contract. |
| May 31, 2013 | Signed as free agent | Juan Marte | — | Texas Rangers | Texas Rangers signed free agent RHP Juan Marte to a minor league contract. |
| May 31, 2013 | Signed as free agent | Pedro Reyes | — | Seattle Mariners | Seattle Mariners signed free agent LHP Pedro Reyes to a minor league contract. |
| May 31, 2013 | Signed as free agent | Johan Mieses | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RF Johan Mieses to a minor league contract. |
| May 30, 2013 | Signed as free agent | Mario Martinez | — | Boston Red Sox | Boston Red Sox signed free agent 3B Mario Martinez to a minor league contract. |
| May 30, 2013 | Signed as free agent | J.R. Towles | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C J.R. Towles to a minor league contract. |
| May 30, 2013 | Signed as free agent | Andy González | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Andy Gonzalez to a minor league contract. |
| May 30, 2013 | Signed | Hector Caro | — | Cleveland Guardians | Cleveland Indians signed OF Hector Caro. |
| May 30, 2013 | Signed as free agent | Robert Del Rosario | — | Chicago White Sox | Chicago White Sox signed free agent LF Robert Del Rosario to a minor league contract. |
| May 30, 2013 | Signed as free agent | Adderly Ceballo | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Adderly Ceballo to a minor league contract. |
| May 29, 2013 | Signed as free agent | Carlos Sosa | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Carlos Sosa to a minor league contract. |
| May 29, 2013 | Signed as free agent | Alexander De La Cruz | — | Baltimore Orioles | Baltimore Orioles signed free agent C Alexander De La Cruz to a minor league contract. |
| May 29, 2013 | Signed as free agent | Johansel Delgado | — | Chicago White Sox | Chicago White Sox signed free agent RHP Johansel Delgado to a minor league contract. |
| May 29, 2013 | Signed as free agent | Deibi Yrizarri | — | Washington Nationals | Washington Nationals signed free agent RHP Deibi Yrizarri to a minor league contract. |
| May 29, 2013 | Signed as free agent | Jose Rosario | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Jose Rosario to a minor league contract. |
| May 29, 2013 | Signed as free agent | Alejandro Diaz | — | New York Mets | New York Mets signed free agent SS Alejandro Diaz to a minor league contract. |
| May 29, 2013 | Released | Sean West | — | Washington Nationals | Washington Nationals released LHP Sean West. |
| May 28, 2013 | Signed as free agent | Alex Llanos | — | Chicago White Sox | Chicago White Sox signed free agent OF Alex Llanos to a minor league contract. |
| May 28, 2013 | Signed as free agent | Juan De Los Santos | — | Milwaukee Brewers | Milwaukee Brewers signed free agent OF Juan De Los Santos to a minor league contract. |
| May 28, 2013 | Signed as free agent | Jorge Quiterio | — | Milwaukee Brewers | Milwaukee Brewers signed free agent IF Jorge Quiterio to a minor league contract. |
| May 28, 2013 | Signed as free agent | Blayne Weller | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Blayne Weller to a minor league contract. |
| May 27, 2013 | Signed as free agent | Spencer Trygg | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Spencer Trygg to a minor league contract. |
| May 26, 2013 | Signed as free agent | Clay Hensley | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Clay Hensley to a minor league contract. |
| May 25, 2013 | Signed as free agent | Rafael Perez | — | Boston Red Sox | Boston Red Sox signed free agent LHP Rafael Perez to a minor league contract. |
| May 25, 2013 | Signed as free agent | Shaeffer Hall | — | Athletics | Oakland Athletics signed free agent LHP Shaeffer Hall to a minor league contract. |
| May 25, 2013 | Signed as free agent | Dan Cortes | — | San Diego Padres | San Diego Padres signed free agent RHP Dan Cortes to a minor league contract. |
| May 25, 2013 | Signed as free agent | Fautino De Los Santos | — | San Diego Padres | San Diego Padres signed free agent RHP Fautino De Los Santos to a minor league contract. |
| May 24, 2013 | Signed as free agent | Josh Richmond | — | Chicago White Sox | Chicago White Sox signed free agent OF Josh Richmond to a minor league contract. |
| May 24, 2013 | Signed as free agent | Chadwick Tromp | — | Cincinnati Reds | Cincinnati Reds signed free agent C Chadwick Tromp to a minor league contract. |
| May 23, 2013 | Released | Derek Lowe | — | Texas Rangers | Texas Rangers released RHP Derek Lowe. |
| May 23, 2013 | Signed as free agent | Mark Teahen | — | Texas Rangers | Texas Rangers signed free agent 3B Mark Teahen to a minor league contract. |
| May 23, 2013 | Released | Kurt Fleming | — | Seattle Mariners | Seattle Mariners released OF Kurt Fleming. |
| May 23, 2013 | Signed as free agent | Jesus Brea | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Jesus Brea to a minor league contract. |
| May 22, 2013 | Released | Jon Rauch | — | Miami Marlins | Miami Marlins released RHP Jon Rauch. |
| May 22, 2013 | Signed as free agent | Stefan Gartrell | — | Atlanta Braves | Atlanta Braves signed free agent OF Stefan Gartrell to a minor league contract. |
| May 22, 2013 | Signed as free agent | Dustin Martin | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent OF Dustin Martin to a minor league contract. |
| May 21, 2013 | Signed as free agent | Coby Cowgill | — | San Diego Padres | San Diego Padres signed free agent RHP Coby Cowgill to a minor league contract. |
| May 21, 2013 | Signed as free agent | Wagner Ramirez | — | Cleveland Guardians | Cleveland Indians signed free agent C Wagner Ramirez to a minor league contract. |
| May 20, 2013 | Signed as free agent | David Aardsma | — | New York Mets | New York Mets signed free agent RHP David Aardsma to a minor league contract. |
| May 20, 2013 | Signed as free agent | Trevor Bell | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Trevor Bell to a minor league contract. |
| May 18, 2013 | Signed as free agent | Mike Wilson | — | San Diego Padres | San Diego Padres signed free agent RF Mike Wilson to a minor league contract. |
| May 18, 2013 | Trade | Reid Brignac | Colorado Rockies | New York Yankees | Colorado Rockies traded Reid Brignac to New York Yankees. |
| May 18, 2013 | Trade | Reid Brignac | Colorado Rockies | New York Yankees | Colorado Rockies traded SS Reid Brignac to New York Yankees. |
| May 18, 2013 | Signed as free agent | Joe Beimel | — | Atlanta Braves | Atlanta Braves signed free agent LHP Joe Beimel to a minor league contract. |
| May 17, 2013 | Signed as free agent | Carlos Zambrano | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Carlos Zambrano to a minor league contract. |
| May 16, 2013 | Signed as free agent | Matt Fox | — | New York Mets | New York Mets signed free agent RHP Matt Fox to a minor league contract. |
| May 16, 2013 | Signed as free agent | Erik Arnesen | — | Athletics | Oakland Athletics signed free agent RHP Erik Arnesen to a minor league contract. |
| May 16, 2013 | Signed as free agent | Adam Reifer | — | Miami Marlins | Miami Marlins signed free agent RHP Adam Reifer to a minor league contract. |
| May 16, 2013 | Signed as free agent | Jerry Seitz | — | New York Yankees | New York Yankees signed free agent C Jerry Seitz to a minor league contract. |
| May 15, 2013 | Signed as free agent | Sean Gallagher | — | Colorado Rockies | Colorado Rockies signed free agent RHP Sean Gallagher to a minor league contract. |
| May 15, 2013 | Signed as free agent | Ronny Paulino | — | Baltimore Orioles | Baltimore Orioles signed free agent C Ronny Paulino to a minor league contract. |
| May 15, 2013 | Signed as free agent | Erasmo Pinales | — | Houston Astros | Houston Astros signed free agent RHP Erasmo Pinales to a minor league contract. |
| May 14, 2013 | Released | Fautino De Los Santos | — | San Diego Padres | San Diego Padres released RHP Fautino De Los Santos. |
| May 14, 2013 | Signed | Andres Sthormes | — | Detroit Tigers | Detroit Tigers signed C Andres Sthormes. |
| May 14, 2013 | Signed as free agent | Zach Grimmett | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Zach Grimmett to a minor league contract. |
| May 13, 2013 | Signed as free agent | Rick Ankiel | — | New York Mets | New York Mets signed free agent CF Rick Ankiel. |
| May 13, 2013 | Signed as free agent | Luis Durango | — | Cincinnati Reds | Cincinnati Reds signed free agent LF Luis Durango to a minor league contract. |
| May 13, 2013 | Signed as free agent | Cole White | — | Colorado Rockies | Colorado Rockies signed free agent RHP Cole White to a minor league contract. |
| May 12, 2013 | Signed as free agent | Édgar González | — | Houston Astros | Houston Astros signed free agent RHP Edgar Gonzalez. |
| May 12, 2013 | Signed as free agent | Cory Wade | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Cory Wade to a minor league contract. |
| May 12, 2013 | Signed as free agent | Kameron Loe | — | Atlanta Braves | Atlanta Braves signed free agent RHP Kameron Loe to a minor league contract. |
| May 11, 2013 | Signed as free agent | Juan Cedeno | — | Atlanta Braves | Atlanta Braves signed free agent LHP Juan Cedeno to a minor league contract. |
| May 11, 2013 | Signed as free agent | Tommy Mendonca | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 3B Tommy Mendonca to a minor league contract. |
| May 10, 2013 | Signed as free agent | Trevor Holder | — | San Diego Padres | San Diego Padres signed free agent RHP Trevor Holder to a minor league contract. |
| May 10, 2013 | Signed as free agent | Austin Urban | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Austin Urban to a minor league contract. |
| May 9, 2013 | Trade | Brandon Wood | Kansas City Royals | Baltimore Orioles | Kansas City Royals traded 3B Brandon Wood to Baltimore Orioles. |
| May 9, 2013 | Released | Rick Ankiel | — | Houston Astros | Houston Astros released RF Rick Ankiel. |
| May 9, 2013 | Trade | Alberto Gonzalez | Chicago Cubs | New York Yankees | Chicago Cubs traded 2B Alberto Gonzalez to New York Yankees. |
| May 9, 2013 | Signed as free agent | Scott Richmond | — | Texas Rangers | Texas Rangers signed free agent RHP Scott Richmond to a minor league contract. |
| May 8, 2013 | Released | Jordan Norberto | — | Athletics | Oakland Athletics released LHP Jordan Norberto. |
| May 8, 2013 | Released | Jonathan Sánchez | — | Pittsburgh Pirates | Pittsburgh Pirates released LHP Jonathan Sanchez. |
| May 8, 2013 | Signed as free agent | Johan Limonta | — | San Diego Padres | San Diego Padres signed free agent IF Johan Limonta to a minor league contract. |
| May 8, 2013 | Signed as free agent | Ariel Montesino | — | Minnesota Twins | Minnesota Twins signed free agent SS Ariel Montesino to a minor league contract. |
| May 7, 2013 | Signed as free agent | Bobby Bramhall | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Bobby Bramhall to a minor league contract. |
| May 7, 2013 | Signed as free agent | Andres Pina | — | Seattle Mariners | Seattle Mariners signed free agent RHP Andres Pena to a minor league contract. |
| May 7, 2013 | Signed as free agent | Humberto Garcia | — | Chicago Cubs | Chicago Cubs signed free agent 2B Humberto Garcia to a minor league contract. |
| May 7, 2013 | Signed as free agent | Sebastián Elizalde | — | Cincinnati Reds | Cincinnati Reds signed free agent OF Sebastian Elizalde to a minor league contract. |
| May 7, 2013 | Signed as free agent | Daniel Carela | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Daniel Carela to a minor league contract. |
| May 7, 2013 | Signed as free agent | Daniel Gonzalez | — | Chicago White Sox | Chicago White Sox signed free agent C Daniel Gonzalez to a minor league contract. |
| May 6, 2013 | Signed as free agent | Brandon Boggs | — | Atlanta Braves | Atlanta Braves signed free agent LF Brandon Boggs to a minor league contract. |
| May 6, 2013 | Signed as free agent | Joe Mather | — | Cincinnati Reds | Cincinnati Reds signed free agent RF Joe Mather to a minor league contract. |
| May 6, 2013 | Signed as free agent | Jairo Kelly | — | Chicago White Sox | Chicago White Sox signed free agent SS Jairo Kelly to a minor league contract. |
| May 5, 2013 | Signed as free agent | Greg Smith | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Greg Smith to a minor league contract. |
| May 4, 2013 | Signed as free agent | Tim Dillard | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Tim Dillard to a minor league contract. |
| May 4, 2013 | Signed as free agent | Kalian Sams | — | San Diego Padres | San Diego Padres signed free agent OF Kalian Sams to a minor league contract. |
| May 3, 2013 | Signed as free agent | Josh Judy | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Josh Judy to a minor league contract. |
| May 2, 2013 | Signed as free agent | Roy Oswalt | — | Colorado Rockies | Colorado Rockies signed free agent RHP Roy Oswalt to a minor league contract. |
| May 1, 2013 | Trade | Chris Nelson | Colorado Rockies | New York Yankees | Colorado Rockies traded 3B Chris Nelson to New York Yankees for cash. |
| May 1, 2013 | Trade | Mark Teahen | Cincinnati Reds | Arizona Diamondbacks | Cincinnati Reds traded 3B Mark Teahen to Arizona Diamondbacks. |
| May 1, 2013 | Signed as free agent | Brohiglyn Rivero | — | Chicago Cubs | Chicago Cubs signed free agent RHP Brohiglyn Rivero to a minor league contract. |
| May 1, 2013 | Signed as free agent | Isaias Lucena | — | Boston Red Sox | Boston Red Sox signed free agent C Isaias Lucena to a minor league contract. |
| Apr 30, 2013 | Trade | Mark Teahen | Arizona Diamondbacks | Cincinnati Reds | Arizona Diamondbacks traded 3B Mark Teahen to Cincinnati Reds. |
| Apr 30, 2013 | Signed as free agent | Aaron Laffey | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP Aaron Laffey to a minor league contract. |
| Apr 30, 2013 | Signed as free agent | Randy Valladares | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Randy Valladares to a minor league contract. |
| Apr 29, 2013 | Trade | Casper Wells | Athletics | Chicago White Sox | Oakland Athletics traded Casper Wells to Chicago White Sox for cash. |
| Apr 29, 2013 | Signed as free agent | Corey Patterson | — | Seattle Mariners | Seattle Mariners signed free agent LF Corey Patterson to a minor league contract. |
| Apr 29, 2013 | Signed as free agent | Juan Rivera | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LF Juan Rivera to a minor league contract. |
| Apr 29, 2013 | Signed as free agent | Alex Burg | — | Miami Marlins | Miami Marlins signed free agent C Alex Burg to a minor league contract. |
| Apr 29, 2013 | Signed as free agent | Yomar Pacheco | — | Chicago Cubs | Chicago Cubs signed free agent RHP Yomar Pacheco to a minor league contract. |
| Apr 28, 2013 | Trade | Chris Snyder | Los Angeles Angels | Baltimore Orioles | Los Angeles Angels traded C Chris Snyder to Baltimore Orioles for RHP Rob Delaney. |
| Apr 28, 2013 | Signed as free agent | Allen Córdoba | — | St. Louis Cardinals | St. Louis Cardinals signed free agent SS Allen Cordoba to a minor league contract. |
| Apr 26, 2013 | Signed as free agent | Delvi Cid | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Delvi Cid to a minor league contract. |
| Apr 26, 2013 | Signed | Yapson Gomez | — | Chicago Cubs | Chicago Cubs signed LHP Yapson Gomez. |
| Apr 25, 2013 | Signed as free agent | Jeff Gibbs | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Jeff Gibbs to a minor league contract. |
| Apr 24, 2013 | Trade | Roman Colon | Pittsburgh Pirates | Atlanta Braves | Pittsburgh Pirates traded RHP Roman Colon to Atlanta Braves. |
| Apr 23, 2013 | Signed as free agent | D.J. Mitchell | — | New York Mets | New York Mets signed free agent RHP D.J. Mitchell to a minor league contract. |
| Apr 23, 2013 | Signed as free agent | Charlie Leesman | — | Chicago White Sox | Chicago White Sox signed free agent LHP Charlie Leesman to a minor league contract. |
| Apr 22, 2013 | Trade | Casper Wells | Toronto Blue Jays | Athletics | Toronto Blue Jays traded LF Casper Wells to Oakland Athletics. |
| Apr 21, 2013 | Signed as free agent | Anthony Ortega | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Anthony Ortega to a minor league contract. |
| Apr 21, 2013 | Signed as free agent | Ray-Patrick Didder | — | Atlanta Braves | Atlanta Braves signed free agent SS Ray-Patrick Didder to a minor league contract. |
| Apr 20, 2013 | Signed as free agent | Eddie Bonine | — | San Diego Padres | San Diego Padres signed free agent RHP Eddie Bonine to a minor league contract. |
| Apr 19, 2013 | Signed as free agent | Luis García | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Luis Garcia to a minor league contract. |
| Apr 19, 2013 | Signed as free agent | Luis Ayala | — | Chicago Cubs | Chicago Cubs signed free agent OF Luis Ayala to a minor league contract. |
| Apr 18, 2013 | Signed as free agent | Nick Weglarz | — | Atlanta Braves | Atlanta Braves signed free agent LF Nick Weglarz to a minor league contract. |
| Apr 18, 2013 | Signed as free agent | Freddy Peralta | — | Seattle Mariners | Seattle Mariners signed free agent RHP Freddy Peralta to a minor league contract. |
| Apr 18, 2013 | Signed as free agent | Angel German | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Angel German to a minor league contract. |
| Apr 17, 2013 | Released | Charlie Leesman | — | Chicago White Sox | Chicago White Sox released LHP Charlie Leesman. |
| Apr 17, 2013 | Signed as free agent | Francisco Rodríguez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Francisco Rodriguez to a minor league contract. |
| Apr 17, 2013 | Signed as free agent | Erik Hamren | — | Atlanta Braves | Atlanta Braves signed free agent RHP Erik Hamren to a minor league contract. |
| Apr 16, 2013 | Trade | Jeff Beliveau | Texas Rangers | Tampa Bay Rays | Texas Rangers traded LHP Jeff Beliveau to Tampa Bay Rays. |
| Apr 16, 2013 | Signed as free agent | Marquez Smith | — | Cincinnati Reds | Cincinnati Reds signed free agent 3B Marquez Smith to a minor league contract. |
| Apr 16, 2013 | Signed as free agent | Thor Meeks | — | Washington Nationals | Washington Nationals signed free agent C Thor Meeks to a minor league contract. |
| Apr 15, 2013 | Trade | Eric Berger | Cleveland Guardians | Houston Astros | Houston Astros traded C Chris Wallace to Cleveland Indians for LHP Eric Berger. |
| Apr 15, 2013 | Signed as free agent | Paco Figueroa | — | Baltimore Orioles | Baltimore Orioles signed free agent 2B Paco Figueroa to a minor league contract. |
| Apr 15, 2013 | Signed as free agent | Kip Wells | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Kip Wells to a minor league contract. |
| Apr 14, 2013 | Signed as free agent | Kevin Gregg | — | Chicago Cubs | Chicago Cubs signed free agent RHP Kevin Gregg to a minor league contract. |
| Apr 12, 2013 | Signed as free agent | Arturo Maltos-Garcia | — | San Francisco Giants | San Francisco Giants signed free agent RHP Arturo Maltos-Garcia to a minor league contract. |
| Apr 11, 2013 | Trade | Steven Hensley | Seattle Mariners | Colorado Rockies | Colorado Rockies traded RHP Aaron Harang to Seattle Mariners for RHP Steven Hensley. |
| Apr 11, 2013 | Signed as free agent | David Aardsma | — | Miami Marlins | Miami Marlins signed free agent RHP David Aardsma to a minor league contract. |
| Apr 11, 2013 | Signed as free agent | Brad Hawpe | — | Los Angeles Angels | Los Angeles Angels signed free agent RF Brad Hawpe to a minor league contract. |
| Apr 11, 2013 | Signed as free agent | Jaime Barria | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Jaime Barria to a minor league contract. |
| Apr 10, 2013 | Trade | Luis Ayala | Baltimore Orioles | Atlanta Braves | Baltimore Orioles traded RHP Luis Ayala to Atlanta Braves for LHP Chris Jones. |
| Apr 10, 2013 | Signed as free agent | Sean Burroughs | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 3B Sean Burroughs to a minor league contract. |
| Apr 10, 2013 | Signed as free agent | Sean Henn | — | New York Mets | New York Mets signed free agent LHP Sean Henn to a minor league contract. |
| Apr 10, 2013 | Signed as free agent | Kelvin Gutiérrez | — | Washington Nationals | Washington Nationals signed free agent SS Kelvin Gutierrez to a minor league contract. |
| Apr 9, 2013 | Signed as free agent | Miguel Batista | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Miguel Batista to a minor league contract. |
| Apr 9, 2013 | Signed as free agent | Clay Rapada | — | New York Yankees | New York Yankees signed free agent LHP Clay Rapada to a minor league contract. |
| Apr 9, 2013 | Signed as free agent | Cale Iorg | — | Baltimore Orioles | Baltimore Orioles signed free agent SS Cale Iorg to a minor league contract. |
| Apr 9, 2013 | Signed as free agent | Jay Jackson | — | Miami Marlins | Miami Marlins signed free agent RHP Jay Jackson to a minor league contract. |
| Apr 9, 2013 | Signed as free agent | Erick Algarin | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Erick Algarin to a minor league contract. |
| Apr 8, 2013 | Trade | Robinson Chirinos | Tampa Bay Rays | Texas Rangers | Tampa Bay Rays traded C Robinson Chirinos to Texas Rangers. |
| Apr 8, 2013 | Signed as free agent | Brandon Allen | — | San Diego Padres | San Diego Padres signed free agent 1B Brandon Allen to a minor league contract. |
| Apr 8, 2013 | Signed as free agent | Michael Suarez | — | Seattle Mariners | Seattle Mariners signed free agent LHP Michael Suarez to a minor league contract. |
| Apr 8, 2013 | Signed as free agent | Ramon Valera | — | Chicago Cubs | Chicago Cubs signed free agent RHP Ramon Valera to a minor league contract. |
| Apr 8, 2013 | Signed as free agent | Brady Adamek | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Brady Adamek to a minor league contract. |
| Apr 6, 2013 | Trade | Ramon Hernandez | Colorado Rockies | Los Angeles Dodgers | Los Angeles Dodgers traded Aaron Harang to Colorado Rockies for C Ramon Hernandez. |
| Apr 6, 2013 | Signed as free agent | Bill Hall | — | Los Angeles Angels | Los Angeles Angels signed free agent LF Bill Hall to a minor league contract. |
| Apr 6, 2013 | Signed as free agent | Pat Egan | — | Atlanta Braves | Atlanta Braves signed free agent RHP Pat Egan to a minor league contract. |
| Apr 5, 2013 | Signed as free agent | Mark Fleury | — | Los Angeles Angels | Los Angeles Angels signed free agent C Mark Fleury to a minor league contract. |
| Apr 5, 2013 | Signed as free agent | Jeremy Farrell | — | Chicago White Sox | Chicago White Sox signed free agent 3B Jeremy Farrell to a minor league contract. |
| Apr 5, 2013 | Trade | Stephen Vogt | Tampa Bay Rays | Athletics | Tampa Bay Rays traded C Stephen Vogt to Oakland Athletics for Player To Be Named Later. |
| Apr 5, 2013 | Signed as free agent | Ibandel Isabel | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RF Ibandel Isabel to a minor league contract. |
| Apr 4, 2013 | Signed as free agent | Julio Rodriguez | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Julio Rodriguez to a minor league contract. |
| Apr 4, 2013 | Signed as free agent | Jose Valverde | — | Detroit Tigers | Detroit Tigers signed free agent RHP Jose Valverde to a minor league contract. |
| Apr 4, 2013 | Signed as free agent | Chris Young | — | Washington Nationals | Washington Nationals signed free agent RHP Chris Young to a minor league contract. |
| Apr 4, 2013 | Released | David Aardsma | — | New York Yankees | New York Yankees released RHP David Aardsma. |
| Apr 4, 2013 | Trade | Travis Blackley | Athletics | Houston Astros | Oakland Athletics traded LHP Travis Blackley to Houston Astros for RF Jake Goebbert. |
| Apr 4, 2013 | Released | Matt Yourkin | — | San Francisco Giants | San Francisco Giants released LHP Matt Yourkin. |
| Apr 3, 2013 | Signed as free agent | Donnie Murphy | — | Chicago Cubs | Chicago Cubs signed free agent 3B Donnie Murphy to a minor league contract. |
| Apr 3, 2013 | Released | Kevin Gregg | — | Los Angeles Dodgers | Los Angeles Dodgers released RHP Kevin Gregg. |
| Apr 3, 2013 | Released | Clay Rapada | — | New York Yankees | New York Yankees released LHP Clay Rapada. |
| Apr 3, 2013 | Signed as free agent | Luis Durango | — | Chicago White Sox | Chicago White Sox signed free agent LF Luis Durango to a minor league contract. |
| Apr 3, 2013 | Signed as free agent | Mike MacDougal | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Mike MacDougal to a minor league contract. |
| Apr 2, 2013 | Signed as free agent | Humberto Cota | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Humberto Cota to a minor league contract. |
| Apr 2, 2013 | Signed as free agent | Ryan Sweeney | — | Chicago Cubs | Chicago Cubs signed free agent RF Ryan Sweeney to a minor league contract. |
| Apr 2, 2013 | Signed as free agent | Jason Berken | — | Chicago White Sox | Chicago White Sox signed free agent RHP Jason Berken to a minor league contract. |
| Apr 2, 2013 | Signed as free agent | Blaine Hardy | — | Detroit Tigers | Detroit Tigers signed free agent LHP Blaine Hardy to a minor league contract. |
| Apr 1, 2013 | Trade | Lars Anderson | Toronto Blue Jays | Chicago White Sox | Toronto Blue Jays traded 1B Lars Anderson to Chicago White Sox. |
| Apr 1, 2013 | Signed as free agent | Jeremy Erben | — | Chicago White Sox | Chicago White Sox signed free agent RHP Jeremy Erben to a minor league contract. |
| Apr 1, 2013 | Signed as free agent | Tom Cochran | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Tom Cochran to a minor league contract. |
| Apr 1, 2013 | Signed as free agent | Eric Farris | — | Minnesota Twins | Minnesota Twins signed free agent 2B Eric Farris to a minor league contract. |
| Apr 1, 2013 | Signed as free agent | Tyler Greene | — | Chicago White Sox | Chicago White Sox signed free agent SS Tyler Greene to a minor league contract. |
| Apr 1, 2013 | Signed as free agent | Ramon Benjamin | — | Miami Marlins | Miami Marlins signed free agent LHP Ramon Benjamin to a minor league contract. |
| Apr 1, 2013 | Released | Zach Simons | — | Texas Rangers | Texas Rangers released RHP Zach Simons. |
| Apr 1, 2013 | Signed as free agent | Gerson Bautista | — | Boston Red Sox | Boston Red Sox signed free agent RHP Gerson Bautista to a minor league contract. |
| Apr 1, 2013 | Signed as free agent | Mike Broadway | — | Washington Nationals | Washington Nationals signed free agent RHP Michael Broadway to a minor league contract. |
| Apr 1, 2013 | Signed as free agent | Rob Waite | — | Miami Marlins | Miami Marlins signed free agent RHP Rob Waite to a minor league contract. |
| Apr 1, 2013 | Signed as free agent | Kurt Yacko | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Kurt Yacko to a minor league contract. |
| Apr 1, 2013 | Signed as free agent | Roberto Vahlis | — | Chicago Cubs | Chicago Cubs signed free agent C Roberto Vahlis to a minor league contract. |
| Apr 1, 2013 | Signed as free agent | Jhonny Pereda | — | Chicago Cubs | Chicago Cubs signed free agent C Jhonny Pereda to a minor league contract. |
| Apr 1, 2013 | Signed as free agent | Josh Bell | — | New York Yankees | New York Yankees signed free agent 3B Josh Bell to a minor league contract. |
| Apr 1, 2013 | Signed as free agent | Mike Brenly | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Michael Brenly to a minor league contract. |
| Apr 1, 2013 | Released | Gabe Suarez | — | Texas Rangers | Texas Rangers released 2B Gabe Suarez. |
| Mar 31, 2013 | Signed as free agent | Alex Keudell | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Alex Keudell to a minor league contract. |
| Mar 31, 2013 | Signed as free agent | Greg Ross | — | Atlanta Braves | Atlanta Braves signed free agent RHP Greg Ross to a minor league contract. |
| Mar 31, 2013 | Signed as free agent | Omar Poveda | — | Atlanta Braves | Atlanta Braves signed free agent RHP Omar Poveda to a minor league contract. |
| Mar 31, 2013 | Signed as free agent | Ruben Gotay | — | St. Louis Cardinals | St. Louis Cardinals signed free agent 2B Ruben Gotay to a minor league contract. |
| Mar 31, 2013 | Signed as free agent | Zach Neal | — | Athletics | Oakland Athletics signed free agent RHP Zach Neal to a minor league contract. |
| Mar 31, 2013 | Signed as free agent | Brandon Snyder | — | Boston Red Sox | Boston Red Sox signed free agent 1B Brandon Snyder to a minor league contract. |
| Mar 31, 2013 | Released | Brandon Allen | — | Texas Rangers | Texas Rangers released 1B Brandon Allen. |
| Mar 31, 2013 | Signed as free agent | Chris O'Dowd | — | Colorado Rockies | Colorado Rockies signed free agent C Chris O'Dowd to a minor league contract. |
| Mar 31, 2013 | Signed as free agent | Dean Espy | — | Colorado Rockies | Colorado Rockies signed free agent 1B Dean Espy to a minor league contract. |
| Mar 31, 2013 | Signed as free agent | Estevenson Encarnacion | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Estevenson Encarnacion to a minor league contract. |
| Mar 30, 2013 | Released | Ryan Sweeney | — | Boston Red Sox | Boston Red Sox released RF Ryan Sweeney. |
| Mar 30, 2013 | Released | Andy González | — | Chicago White Sox | Chicago White Sox released SS Andy Gonzalez. |
| Mar 30, 2013 | Released | John Shelby | — | Chicago White Sox | Chicago White Sox released OF John Shelby. |
| Mar 30, 2013 | Released | Kanekoa Texeira | — | Cincinnati Reds | Cincinnati Reds released RHP Kanekoa Texeira. |
| Mar 30, 2013 | Released | Corey Patterson | — | New York Mets | New York Mets released OF Corey Patterson. |
| Mar 30, 2013 | Released | Mike Wilson | — | New York Mets | New York Mets released RF Mike Wilson. |
| Mar 30, 2013 | Released | Ronny Paulino | — | Seattle Mariners | Seattle Mariners released C Ronny Paulino. |
| Mar 30, 2013 | Released | P.J. Phillips | — | Los Angeles Dodgers | Los Angeles Dodgers released 2B P.J. Phillips. |
| Mar 29, 2013 | Signed as free agent | Miguel Olivo | — | Miami Marlins | Miami Marlins signed free agent C Miguel Olivo. |
| Mar 29, 2013 | Signed as free agent | David Adams | — | New York Yankees | New York Yankees signed free agent 2B David Adams to a minor league contract. |
| Mar 29, 2013 | Signed as free agent | Freddy Garcia | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Freddy Garcia to a minor league contract. |
| Mar 29, 2013 | Trade | Scott Proctor | San Francisco Giants | Baltimore Orioles | San Francisco Giants traded RHP Scott Proctor to Baltimore Orioles. |
| Mar 29, 2013 | Trade | Brian Jeroloman | Cleveland Guardians | Pittsburgh Pirates | Cleveland Indians traded C Brian Jeroloman to Pittsburgh Pirates. |
| Mar 29, 2013 | Released | Chris Pettit | — | Baltimore Orioles | Baltimore Orioles released LF Chris Pettit. |
| Mar 29, 2013 | Released | Jeremy Farrell | — | Pittsburgh Pirates | Pittsburgh Pirates released 3B Jeremy Farrell. |
| Mar 29, 2013 | Released | Ryan Strieby | — | Toronto Blue Jays | Toronto Blue Jays released 1B Ryan Strieby. |
| Mar 28, 2013 | Released | Juan Rivera | — | New York Yankees | New York Yankees released LF Juan Rivera. |
| Mar 28, 2013 | Signed as free agent | Ramon E Ramirez | — | San Francisco Giants | San Francisco Giants signed free agent RHP Ramon Ramirez to a minor league contract. |
| Mar 28, 2013 | Signed as free agent | Aaron Cook | — | Colorado Rockies | Colorado Rockies signed free agent RHP Aaron Cook to a minor league contract. |
| Mar 28, 2013 | Signed as free agent | Nick Evans | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 1B Nick Evans to a minor league contract. |
| Mar 28, 2013 | Signed as free agent | Jean Almanzar | — | Chicago White Sox | Chicago White Sox signed free agent SS Jean Almanzar to a minor league contract. |
| Mar 28, 2013 | Signed as free agent | Ryan Delgado | — | Athletics | Oakland Athletics signed free agent C Ryan Delgado to a minor league contract. |
| Mar 28, 2013 | Released | James Skelton | — | Colorado Rockies | Colorado Rockies released C James Skelton. |
| Mar 28, 2013 | Signed as free agent | Mike DeMark | — | Athletics | Oakland Athletics signed free agent RHP Mike DeMark to a minor league contract. |
| Mar 28, 2013 | Signed as free agent | Tim Kennelly | — | Texas Rangers | Texas Rangers signed free agent OF Tim Kennelly to a minor league contract. |
| Mar 27, 2013 | Signed as free agent | George Sherrill | — | Kansas City Royals | Kansas City Royals signed free agent LHP George Sherrill to a minor league contract and invited him to spring training. |
| Mar 27, 2013 | Signed as free agent | Xavier Nady | — | Kansas City Royals | Kansas City Royals signed free agent LF Xavier Nady to a minor league contract and invited him to spring training. |
| Mar 27, 2013 | Released | Donnie Murphy | — | Milwaukee Brewers | Milwaukee Brewers released 3B Donnie Murphy. |
| Mar 27, 2013 | Signed as free agent | Yuniesky Betancourt | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 1B Yuniesky Betancourt. |
| Mar 27, 2013 | Trade | Steve Geltz | Los Angeles Angels | Tampa Bay Rays | Tampa Bay Rays traded RHP Dane De La Rosa to Los Angeles Angels for RHP Steve Geltz. |
| Mar 27, 2013 | Trade | Elvin Ramirez | New York Mets | Los Angeles Angels | New York Mets traded RHP Elvin Ramirez to Los Angeles Angels. |
| Mar 27, 2013 | Released | Brandon Snyder | — | Texas Rangers | Texas Rangers released 1B Brandon Snyder. |
| Mar 27, 2013 | Released | Miguel Olivo | — | Cincinnati Reds | Cincinnati Reds released C Miguel Olivo. |
| Mar 27, 2013 | Signed as free agent | Mark Lowe | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Mark Lowe to a minor league contract and invited him to spring training. |
| Mar 27, 2013 | Signed as free agent | Mario Martinez | — | Detroit Tigers | Detroit Tigers signed free agent 3B Mario Martinez to a minor league contract. |
| Mar 27, 2013 | Signed as free agent | Ryan Woolley | — | Atlanta Braves | Atlanta Braves signed free agent RHP Ryan Woolley to a minor league contract. |
| Mar 27, 2013 | Released | Josh Kroeger | — | Atlanta Braves | Atlanta Braves released OF Josh Kroeger. |
| Mar 27, 2013 | Released | Matt Mangini | — | Cincinnati Reds | Cincinnati Reds released 3B Matt Mangini. |
| Mar 27, 2013 | Released | Michael Dubee | — | Detroit Tigers | Detroit Tigers released RHP Michael Dubee. |
| Mar 27, 2013 | Released | Shane Dyer | — | Detroit Tigers | Detroit Tigers released RHP Shane Dyer. |
| Mar 27, 2013 | Released | Luke Sommer | — | Detroit Tigers | Detroit Tigers released LHP Luke Sommer. |
| Mar 27, 2013 | Released | Ian Gac | — | Kansas City Royals | Kansas City Royals released 1B Ian Gac. |
| Mar 27, 2013 | Released | Jason Lane | — | Minnesota Twins | Minnesota Twins released LHP Jason Lane. |
| Mar 27, 2013 | Signed as free agent | Henry Lugo | — | Tampa Bay Rays | Tampa Bay Rays signed free agent IF Henry Lugo to a minor league contract. |
| Mar 26, 2013 | Signed as free agent | Matt Diaz | — | Miami Marlins | Miami Marlins signed free agent LF Matt Diaz to a minor league contract. |
| Mar 26, 2013 | Released | Aaron Cook | — | Philadelphia Phillies | Philadelphia Phillies released RHP Aaron Cook. |
| Mar 26, 2013 | Released | Chris Young | — | Washington Nationals | Washington Nationals released RHP Chris Young. |
| Mar 26, 2013 | Released | Lyle Overbay | — | Boston Red Sox | Boston Red Sox released 1B Lyle Overbay. |
| Mar 26, 2013 | Released | Tyler Greene | — | Houston Astros | Houston Astros released SS Tyler Greene. |
| Mar 26, 2013 | Signed as free agent | Daisuke Matsuzaka | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Daisuke Matsuzaka to a minor league contract. |
| Mar 26, 2013 | Signed as free agent | Matt Capps | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Matt Capps to a minor league contract. |
| Mar 26, 2013 | Trade | Kramer Sneed | New York Yankees | Los Angeles Angels | Los Angeles Angels traded LF Vernon Wells to New York Yankees for RF Exicardo Cayones and LHP Kramer Sneed. |
| Mar 26, 2013 | Signed as free agent | Lyle Overbay | — | New York Yankees | New York Yankees signed free agent 1B Lyle Overbay to a minor league contract and invited him to spring training. |
| Mar 26, 2013 | Released | David Adams | — | New York Yankees | New York Yankees released 2B David Adams. |
| Mar 26, 2013 | Signed as free agent | Kyle Russell | — | Atlanta Braves | Atlanta Braves signed free agent LF Kyle Russell to a minor league contract. |
| Mar 26, 2013 | Released | Sergio Espinosa | — | Boston Red Sox | Boston Red Sox released LHP Sergio Espinosa. |
| Mar 26, 2013 | Released | Jose Jimenez | — | Kansas City Royals | Kansas City Royals released LHP Jose Jimenez. |
| Mar 26, 2013 | Released | Sean Henn | — | Boston Red Sox | Boston Red Sox released LHP Sean Henn. |
| Mar 26, 2013 | Signed as free agent | Shawn Teufel | — | New York Mets | New York Mets signed free agent LHP Shawn Teufel to a minor league contract. |
| Mar 26, 2013 | Signed as free agent | Fiyeral Charlis | — | Washington Nationals | Washington Nationals signed free agent RHP Fiyeral Charlis to a minor league contract. |
| Mar 26, 2013 | Signed as free agent | Ademar Rifaela | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Ademar Rifaela to a minor league contract. |
| Mar 25, 2013 | Trade | Mike Kvasnicka | Houston Astros | Minnesota Twins | Houston Astros traded RF Mike Kvasnicka to Minnesota Twins for RHP Gonzalo Sanudo. |
| Mar 25, 2013 | Trade | Curt Casali | Detroit Tigers | Tampa Bay Rays | Detroit Tigers traded C Curt Casali to Tampa Bay Rays. |
| Mar 25, 2013 | Released | Matt Capps | — | Cleveland Guardians | Cleveland Indians released RHP Matt Capps. |
| Mar 25, 2013 | Released | Rod Barajas | — | Arizona Diamondbacks | Arizona Diamondbacks released C Rod Barajas. |
| Mar 25, 2013 | Signed as free agent | Kyle Lohse | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Kyle Lohse. |
| Mar 25, 2013 | Released | Xavier Nady | — | Kansas City Royals | Kansas City Royals released LF Xavier Nady. |
| Mar 25, 2013 | Released | George Sherrill | — | Kansas City Royals | Kansas City Royals released LHP George Sherrill. |
| Mar 25, 2013 | Trade | Jairo Asencio | Milwaukee Brewers | Baltimore Orioles | Milwaukee Brewers traded RHP Jairo Asencio to Baltimore Orioles. |
| Mar 25, 2013 | Released | Greg Ross | — | Detroit Tigers | Detroit Tigers released RHP Greg Ross. |
| Mar 25, 2013 | Released | Miguel Batista | — | Colorado Rockies | Colorado Rockies released RHP Miguel Batista. |
| Mar 25, 2013 | Signed as free agent | Anjul Hernandez | — | Seattle Mariners | Seattle Mariners signed free agent RHP Anjul Hernandez to a minor league contract. |
| Mar 25, 2013 | Signed as free agent | Ramon Luna | — | St. Louis Cardinals | St. Louis Cardinals signed free agent OF Ramon Luna to a minor league contract. |
| Mar 25, 2013 | Signed as free agent | Gerardo Ramirez | — | Houston Astros | Houston Astros signed free agent RHP Gerardo Ramirez to a minor league contract. |
| Mar 24, 2013 | Signed as free agent | Ronny Cedeno | — | Houston Astros | Houston Astros signed free agent SS Ronny Cedeno. |
| Mar 24, 2013 | Signed as free agent | Endy Chavez | — | Seattle Mariners | Seattle Mariners signed free agent LF Endy Chavez to a minor league contract and invited him to spring training. |
| Mar 24, 2013 | Released | Mark Lowe | — | Los Angeles Dodgers | Los Angeles Dodgers released RHP Mark Lowe. |
| Mar 24, 2013 | Released | Freddy Garcia | — | San Diego Padres | San Diego Padres released RHP Freddy Garcia. |
| Mar 24, 2013 | Released | Yuniesky Betancourt | — | Philadelphia Phillies | Philadelphia Phillies released 2B Yuniesky Betancourt. |
| Mar 24, 2013 | Signed as free agent | Jon Garland | — | Colorado Rockies | Colorado Rockies signed free agent RHP Jon Garland. |
| Mar 24, 2013 | Released | Daisuke Matsuzaka | — | Cleveland Guardians | Cleveland Indians released RHP Daisuke Matsuzaka. |
| Mar 24, 2013 | Signed as free agent | Konrad Schmidt | — | Cincinnati Reds | Cincinnati Reds signed free agent C Konrad Schmidt to a minor league contract. |
| Mar 24, 2013 | Signed as free agent | Juan Silverio | — | Cincinnati Reds | Cincinnati Reds signed free agent 3B Juan Silverio to a minor league contract. |
| Mar 24, 2013 | Released | Jeff Stevens | — | Cincinnati Reds | Cincinnati Reds released RHP Jeff Stevens. |
| Mar 24, 2013 | Released | Nick Weglarz | — | Tampa Bay Rays | Tampa Bay Rays released LF Nick Weglarz. |
| Mar 24, 2013 | Released | Drew Benes | — | Texas Rangers | Texas Rangers released RHP Drew Benes. |
| Mar 24, 2013 | Released | Joucer Martinez | — | Texas Rangers | Texas Rangers released RHP Joucer Martinez. |
| Mar 24, 2013 | Released | Ryan Harvey | — | Atlanta Braves | Atlanta Braves released OF Ryan Harvey. |
| Mar 23, 2013 | Released | Brad Hawpe | — | Pittsburgh Pirates | Pittsburgh Pirates released RF Brad Hawpe. |
| Mar 23, 2013 | Signed as free agent | Wilson Valdez | — | Miami Marlins | Miami Marlins signed free agent SS Wilson Valdez to a minor league contract and invited him to spring training. |
| Mar 23, 2013 | Signed as free agent | Chien-Ming Wang | — | New York Yankees | New York Yankees signed free agent RHP Chien-Ming Wang to a minor league contract. |
| Mar 23, 2013 | Released | Jon Garland | — | Seattle Mariners | Seattle Mariners released RHP Jon Garland. |
| Mar 23, 2013 | Released | Mike Jacobs | — | Seattle Mariners | Seattle Mariners released 1B Mike Jacobs. |
| Mar 23, 2013 | Signed as free agent | Yoshinori Tateyama | — | Texas Rangers | Texas Rangers signed free agent RHP Yoshinori Tateyama to a minor league contract. |
| Mar 23, 2013 | Released | Jack Cust | — | Tampa Bay Rays | Tampa Bay Rays released DH Jack Cust. |
| Mar 23, 2013 | Released | Konrad Schmidt | — | Texas Rangers | Texas Rangers released C Konrad Schmidt. |
| Mar 23, 2013 | Released | Ben Fritz | — | Los Angeles Angels | Los Angeles Angels released RHP Ben Fritz. |
| Mar 23, 2013 | Signed as free agent | Mauro Vides | — | Chicago Cubs | Chicago Cubs signed free agent RHP Mauro Vides to a minor league contract. |
| Mar 22, 2013 | Signed as free agent | J.C. Romero | — | Washington Nationals | Washington Nationals signed free agent LHP J.C. Romero to a minor league contract and invited him to spring training. |
| Mar 22, 2013 | Released | Endy Chavez | — | Kansas City Royals | Kansas City Royals released LF Endy Chavez. |
| Mar 22, 2013 | Released | Ramon E Ramirez | — | San Francisco Giants | San Francisco Giants released RHP Ramon Ramirez. |
| Mar 22, 2013 | Released | Wilson Valdez | — | San Francisco Giants | San Francisco Giants released SS Wilson Valdez. |
| Mar 22, 2013 | Released | Bill Hall | — | Los Angeles Angels | Los Angeles Angels released 2B Bill Hall. |
| Mar 22, 2013 | Released | Rodrigo Lopez | — | Philadelphia Phillies | Philadelphia Phillies released RHP Rodrigo Lopez. |
| Mar 22, 2013 | Trade | Justin Greene | Chicago White Sox | Arizona Diamondbacks | Chicago White Sox traded OF Justin Greene to Arizona Diamondbacks. |
| Mar 22, 2013 | Released | Jason Berken | — | Chicago Cubs | Chicago Cubs released RHP Jason Berken. |
| Mar 22, 2013 | Signed as free agent | Jesús Liranzo | — | Atlanta Braves | Atlanta Braves signed free agent RHP Jesus Liranzo to a minor league contract. |
| Mar 22, 2013 | Signed as free agent | Javier Robles | — | Atlanta Braves | Atlanta Braves signed free agent 2B Javier Robles to a minor league contract. |
| Mar 21, 2013 | Released | Yoshinori Tateyama | — | Texas Rangers | Texas Rangers released RHP Yoshinori Tateyama. |
| Mar 21, 2013 | Released | Trevor Bell | — | Detroit Tigers | Detroit Tigers released RHP Trevor Bell. |
| Mar 21, 2013 | Released | Jamie Richmond | — | Kansas City Royals | Kansas City Royals released RHP Jamie Richmond. |
| Mar 20, 2013 | Trade | Stephen Parker | Athletics | Milwaukee Brewers | Oakland Athletics traded 3B Stephen Parker to Milwaukee Brewers for RHP Darren Byrd. |
| Mar 20, 2013 | Trade | John McDonald | Arizona Diamondbacks | Pittsburgh Pirates | Arizona Diamondbacks traded SS John McDonald to Pittsburgh Pirates. |
| Mar 20, 2013 | Released | Chone Figgins | — | Miami Marlins | Miami Marlins released 3B Chone Figgins. |
| Mar 20, 2013 | Trade | Ian Krol | Athletics | Washington Nationals | Oakland Athletics traded LHP Ian Krol to Washington Nationals. |
| Mar 20, 2013 | Signed as free agent | Jolbert Cabrera | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 3B Jolbert Cabrera to a minor league contract. |
| Mar 20, 2013 | Released | Mitchell Beacom | — | Kansas City Royals | Kansas City Royals released LHP Mitchell Beacom. |
| Mar 20, 2013 | Released | David Newmann | — | Philadelphia Phillies | Philadelphia Phillies released LHP David Newmann. |
| Mar 19, 2013 | Released | Ronny Cedeno | — | St. Louis Cardinals | St. Louis Cardinals released SS Ronny Cedeno. |
| Mar 19, 2013 | Released | Dallas McPherson | — | Los Angeles Dodgers | Los Angeles Dodgers released 3B Dallas McPherson. |
| Mar 19, 2013 | Signed as free agent | Koyie Hill | — | Miami Marlins | Miami Marlins signed free agent C Koyie Hill to a minor league contract. |
| Mar 19, 2013 | Trade | Michael Cisco | Philadelphia Phillies | Los Angeles Angels | Philadelphia Phillies traded RHP Michael Cisco to Los Angeles Angels. |
| Mar 19, 2013 | Released | Chris Nowak | — | Arizona Diamondbacks | Arizona Diamondbacks released 3B Chris Nowak. |
| Mar 19, 2013 | Trade | Jose Dore | San Diego Padres | Chicago Cubs | San Diego Padres traded 1B Jose Dore to Chicago Cubs. |
| Mar 18, 2013 | Released | Ramon Castro | — | Los Angeles Dodgers | Los Angeles Dodgers released C Ramon Castro. |
| Mar 18, 2013 | Released | Chris Snyder | — | Washington Nationals | Washington Nationals released C Chris Snyder. |
| Mar 18, 2013 | Released | Bobby Crosby | — | Milwaukee Brewers | Milwaukee Brewers released 3B Bobby Crosby. |
| Mar 18, 2013 | Released | Nick Evans | — | Los Angeles Dodgers | Los Angeles Dodgers released 1B Nick Evans. |
| Mar 18, 2013 | Signed as free agent | Chris Snyder | — | Los Angeles Angels | Los Angeles Angels signed free agent C Chris Snyder to a minor league contract and invited him to spring training. |
| Mar 18, 2013 | Signed as free agent | Raoul Torrez | — | Houston Astros | Houston Astros signed free agent 2B Raoul Torrez to a minor league contract. |
| Mar 18, 2013 | Signed as free agent | Bernardo Reyes | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Bernardo Reyes to a minor league contract. |
| Mar 18, 2013 | Signed as free agent | Bernardo Reyes | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent Bernardo Reyes. |
| Mar 18, 2013 | Signed as free agent | Mark Wagner | — | San Francisco Giants | San Francisco Giants signed free agent C Mark Wagner to a minor league contract. |
| Mar 18, 2013 | Signed as free agent | Bryan Leal | — | Seattle Mariners | Seattle Mariners signed free agent OF Bryan Leal to a minor league contract. |
| Mar 17, 2013 | Released | Matt Diaz | — | New York Yankees | New York Yankees released LF Matt Diaz. |
| Mar 16, 2013 | Released | Garrett Olson | — | Athletics | Oakland Athletics released LHP Garrett Olson. |
| Mar 16, 2013 | Signed as free agent | Niko Gallego | — | Colorado Rockies | Colorado Rockies signed free agent 2B Niko Gallego to a minor league contract. |
| Mar 16, 2013 | Signed as free agent | Marco Grifantini | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Marco Grifantini to a minor league contract. |
| Mar 15, 2013 | Signed as free agent | Brennan Boesch | — | New York Yankees | New York Yankees signed free agent Brennan Boesch. |
| Mar 15, 2013 | Trade | Michael Flacco | Baltimore Orioles | Boston Red Sox | Baltimore Orioles traded 1B Michael Flacco to Boston Red Sox. |
| Mar 15, 2013 | Signed as free agent | Charles Nading | — | Boston Red Sox | Boston Red Sox signed free agent RHP Charles Nading to a minor league contract. |
| Mar 15, 2013 | Signed as free agent | Curt Smith | — | Minnesota Twins | Minnesota Twins signed free agent 1B Curt Smith to a minor league contract. |
| Mar 15, 2013 | Signed as free agent | Jose Disla | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Jose Disla to a minor league contract. |
| Mar 14, 2013 | Released | Chris Cox | — | Arizona Diamondbacks | Arizona Diamondbacks released RHP Chris Cox. |
| Mar 14, 2013 | Signed as free agent | Dashenko Ricardo | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Dashenko Ricardo to a minor league contract. |
| Mar 14, 2013 | Signed as free agent | Jhoan Quijada | — | Chicago White Sox | Chicago White Sox signed free agent RHP Jhoan Quijada to a minor league contract. |
| Mar 13, 2013 | Released | Brennan Boesch | — | Detroit Tigers | Detroit Tigers released RF Brennan Boesch. |
| Mar 13, 2013 | Released | Guillermo Moscoso | — | Kansas City Royals | Kansas City Royals released Guillermo Moscoso. |
| Mar 13, 2013 | Released | David Cooper | — | Toronto Blue Jays | Toronto Blue Jays released 1B David Cooper. |
| Mar 13, 2013 | Signed as free agent | Sergio Perez | — | Athletics | Oakland Athletics signed free agent RHP Sergio Perez to a minor league contract. |
| Mar 11, 2013 | Released | Ben Francisco | — | Cleveland Guardians | Cleveland Indians released LF Ben Francisco. |
| Mar 11, 2013 | Signed as free agent | Ben Francisco | — | New York Yankees | New York Yankees signed free agent LF Ben Francisco to a minor league contract and invited him to spring training. |
| Mar 11, 2013 | Signed as free agent | Jason Kilby | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Jason Kilby to a minor league contract. |
| Mar 11, 2013 | Signed as free agent | Jimmy Parque | — | St. Louis Cardinals | St. Louis Cardinals signed free agent OF Jimmy Parque to a minor league contract. |
| Mar 11, 2013 | Signed as free agent | Albert Herrera | — | Seattle Mariners | Seattle Mariners signed free agent IF Albert Herrera to a minor league contract. |
| Mar 11, 2013 | Signed as free agent | Ronald Sanchez | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RHP Ronald Sanchez to a minor league contract. |
| Mar 10, 2013 | Released | Kelvim Escobar | — | Milwaukee Brewers | Milwaukee Brewers released RHP Kelvim Escobar. |
| Mar 10, 2013 | Signed as free agent | Clayton Tanner | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Clayton Tanner to a minor league contract. |
| Mar 10, 2013 | Signed as free agent | Dan Cortes | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Dan Cortes to a minor league contract. |
| Mar 10, 2013 | Signed | Grenny Cumana | — | Philadelphia Phillies | Philadelphia Phillies signed IF Grenny Cumana. |
| Mar 9, 2013 | Released | Joe Mather | — | Philadelphia Phillies | Philadelphia Phillies released RF Joe Mather. |
| Mar 8, 2013 | Released | Michael Wuertz | — | Miami Marlins | Miami Marlins released RHP Michael Wuertz. |
| Mar 8, 2013 | Signed as free agent | Justin Souza | — | Detroit Tigers | Detroit Tigers signed free agent RHP Justin Souza to a minor league contract. |
| Mar 8, 2013 | Signed as free agent | Matt Hitt | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Matt Hitt to a minor league contract. |
| Mar 8, 2013 | Signed as free agent | Alexdray Laya | — | Seattle Mariners | Seattle Mariners signed free agent IF Alexdray Laya to a minor league contract. |
| Mar 8, 2013 | Signed as free agent | Adbert Alzolay | — | Chicago Cubs | Chicago Cubs signed free agent RHP Adbert Alzolay to a minor league contract. |
| Mar 7, 2013 | Signed as free agent | Victor Cortez | — | Detroit Tigers | Detroit Tigers signed free agent OF Victor Cortez to a minor league contract. |
| Mar 7, 2013 | Signed as free agent | Juan Reyes | — | Atlanta Braves | Atlanta Braves signed free agent OF Juan Reyes to a minor league contract. |
| Mar 7, 2013 | Signed as free agent | Eudy Ramos | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 3B Eudy Ramos to a minor league contract. |
| Mar 6, 2013 | Signed as free agent | Derek Lowe | — | Texas Rangers | Texas Rangers signed free agent RHP Derek Lowe to a minor league contract and invited him to spring training. |
| Mar 6, 2013 | Signed as free agent | Chad Rodgers | — | Minnesota Twins | Minnesota Twins signed free agent LHP Chad Rodgers to a minor league contract. |
| Mar 6, 2013 | Signed as free agent | Brian Esposito | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Brian Esposito to a minor league contract. |
| Mar 6, 2013 | Signed as free agent | Miguel Bautista | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Miguel Bautista to a minor league contract. |
| Mar 6, 2013 | Signed as free agent | Francisco Lopez | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Francisco Lopez to a minor league contract. |
| Mar 6, 2013 | Signed as free agent | Merandy Gonzalez | — | New York Mets | New York Mets signed free agent RHP Merandy Gonzalez to a minor league contract. |
| Mar 5, 2013 | Released | Will Ohman | — | Washington Nationals | Washington Nationals released LHP Will Ohman. |
| Mar 5, 2013 | Signed as free agent | Armando Rivero | — | Chicago Cubs | Chicago Cubs signed free agent RHP Armando Rivero to a minor league contract. |
| Mar 5, 2013 | Signed as free agent | Daniel Killian | — | Detroit Tigers | Detroit Tigers signed free agent C Daniel Killian to a minor league contract. |
| Mar 5, 2013 | Signed as free agent | Cody Clark | — | Houston Astros | Houston Astros signed free agent C Cody Clark to a minor league contract. |
| Mar 5, 2013 | Signed as free agent | Gerbinson Perez | — | Detroit Tigers | Detroit Tigers signed free agent LHP Gerbinson Perez to a minor league contract. |
| Mar 4, 2013 | Released | Hiroyuki Kobayashi | — | Los Angeles Angels | Los Angeles Angels released RHP Hiroyuki Kobayashi. |
| Mar 4, 2013 | Signed as free agent | Pablo Gonzalez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Pablo Gonzalez to a minor league contract. |
| Mar 4, 2013 | Signed as free agent | Melvin Dorta | — | Washington Nationals | Washington Nationals signed free agent 2B Melvin Dorta to a minor league contract. |
| Mar 4, 2013 | Signed as free agent | Jason Michaels | — | Washington Nationals | Washington Nationals signed free agent LF Jason Michaels to a minor league contract. |
| Mar 3, 2013 | Signed as free agent | Bobby Cassevah | — | Colorado Rockies | Colorado Rockies signed free agent Bobby Cassevah. |
| Mar 3, 2013 | Signed as free agent | Frandy De La Rosa | — | Chicago Cubs | Chicago Cubs signed free agent Frandy De La Rosa. |
| Mar 3, 2013 | Signed as free agent | Domingo Acevedo | — | New York Yankees | New York Yankees signed free agent RHP Domingo Acevedo to a minor league contract. |
| Mar 3, 2013 | Signed as free agent | Yeraldo Fermin | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Yeraldo Fermin to a minor league contract. |
| Mar 3, 2013 | Signed as free agent | Inocencio Heredia | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Inocencio Heredia to a minor league contract. |
| Mar 3, 2013 | Signed as free agent | Cesar Medina | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Cesar Medina to a minor league contract. |
| Mar 3, 2013 | Signed as free agent | Nathanael Javier | — | San Francisco Giants | San Francisco Giants signed free agent 3B Nathanael Javier to a minor league contract. |
| Mar 3, 2013 | Signed as free agent | Luis Castro | — | Colorado Rockies | Colorado Rockies signed free agent SS Luis Castro to a minor league contract. |
| Mar 3, 2013 | Signed as free agent | Nelson Arguila | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Nelson Arguila to a minor league contract. |
| Mar 3, 2013 | Signed as free agent | Yeral Sanchez | — | New York Yankees | New York Yankees signed free agent OF Yeral Sanchez to a minor league contract. |
| Mar 2, 2013 | Signed as free agent | Bobby Cassevah | — | Colorado Rockies | Colorado Rockies signed free agent RHP Bobby Cassevah to a minor league contract and invited him to spring training. |
| Mar 2, 2013 | Signed as free agent | Miguel Abreu | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 2B Miguel Abreu to a minor league contract. |
| Mar 2, 2013 | Signed as free agent | Andrés Blanco | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Andres Blanco to a minor league contract. |
| Mar 2, 2013 | Signed as free agent | Munenori Kawasaki | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Munenori Kawasaki to a minor league contract. |
| Mar 2, 2013 | Signed as free agent | Ali Solis | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Roman Ali Solis to a minor league contract. |
| Mar 2, 2013 | Signed | Robbie Perkins | — | Colorado Rockies | Colorado Rockies signed C Robbie Perkins. |
| Mar 2, 2013 | Signed as free agent | Salvador Justo | — | Colorado Rockies | Colorado Rockies signed free agent RHP Salvador Justo to a minor league contract. |
| Mar 1, 2013 | Signed as free agent | Mark Prior | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Mark Prior to a minor league contract. |
| Mar 1, 2013 | Signed as free agent | C.J. Gillman | — | Colorado Rockies | Colorado Rockies signed free agent C C.J. Gillman to a minor league contract. |
| Mar 1, 2013 | Signed as free agent | Robbie Garvey | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent CF Robbie Garvey to a minor league contract. |
| Mar 1, 2013 | Signed as free agent | Troy Marks | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Troy Marks to a minor league contract. |
| Mar 1, 2013 | Signed as free agent | Shawn Williams | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Shawn Williams to a minor league contract. |
| Mar 1, 2013 | Signed as free agent | Andrew Kown | — | San Francisco Giants | San Francisco Giants signed free agent RHP Andrew Kown to a minor league contract. |
| Feb 28, 2013 | Signed as free agent | Chris Bootcheck | — | New York Yankees | New York Yankees signed free agent RHP Chris Bootcheck to a minor league contract. |
| Feb 28, 2013 | Signed as free agent | Tucker Nathans | — | Baltimore Orioles | Baltimore Orioles signed free agent 2B Tucker Nathans to a minor league contract. |
| Feb 28, 2013 | Signed as free agent | Cesar Arreaza | — | Kansas City Royals | Kansas City Royals signed free agent RHP Cesar Arreaza to a minor league contract. |
| Feb 28, 2013 | Signed as free agent | Freddy Sandoval | — | Kansas City Royals | Kansas City Royals signed free agent 3B Freddy Sandoval to a minor league contract. |
| Feb 28, 2013 | Signed as free agent | Israel Mota | — | Washington Nationals | Washington Nationals signed free agent OF Israel Mota to a minor league contract. |
| Feb 28, 2013 | Signed as free agent | Raul Wallace | — | Cincinnati Reds | Cincinnati Reds signed free agent SS Raul Wallace to a minor league contract. |
| Feb 26, 2013 | Signed as free agent | Scarlyn Reyes | — | New York Mets | New York Mets signed free agent RHP Scarlyn Reyes to a minor league contract. |
| Feb 23, 2013 | Trade | Michael Schwimer | Philadelphia Phillies | Toronto Blue Jays | Philadelphia Phillies traded RHP Michael Schwimer to Toronto Blue Jays for 1B Art Charles. |
| Feb 23, 2013 | Signed as free agent | Jose Contreras | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Jose Contreras to a minor league contract and invited him to spring training. |
| Feb 23, 2013 | Signed as free agent | Andy Wells | — | New York Mets | New York Mets signed free agent RHP Andy Wells to a minor league contract. |
| Feb 23, 2013 | Signed as free agent | Ryan Rowland-Smith | — | Boston Red Sox | Boston Red Sox signed free agent LHP Ryan Rowland-Smith to a minor league contract. |
| Feb 22, 2013 | Signed as free agent | Josh Booty | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Josh Booty to a minor league contract and invited him to spring training. |
| Feb 22, 2013 | Trade | Jeff Soptic | Chicago White Sox | San Francisco Giants | San Francisco Giants traded 3B Conor Gillaspie to Chicago White Sox for RHP Jeff Soptic. |
| Feb 22, 2013 | Signed as free agent | Rony Rodriguez | — | Chicago Cubs | Chicago Cubs signed free agent C Rony Rodriguez to a minor league contract. |
| Feb 22, 2013 | Signed as free agent | Martin Hodwalker | — | Chicago Cubs | Chicago Cubs signed free agent OF Martin Hodwalker to a minor league contract. |
| Feb 22, 2013 | Signed as free agent | Cesar Apaez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent OF Cesar Apaez to a minor league contract. |
| Feb 22, 2013 | Signed as free agent | Raffi Vizcaíno | — | San Francisco Giants | San Francisco Giants signed free agent RHP Raffi Vizcaino to a minor league contract. |
| Feb 21, 2013 | Signed as free agent | Chris Young | — | Washington Nationals | Washington Nationals signed free agent RHP Chris Young to a minor league contract and invited him to spring training. |
| Feb 20, 2013 | Trade | Mike Carp | Seattle Mariners | Boston Red Sox | Seattle Mariners traded 1B Mike Carp to Boston Red Sox. |
| Feb 20, 2013 | Signed as free agent | Rhyne Hughes | — | New York Mets | New York Mets signed free agent 1B Rhyne Hughes to a minor league contract. |
| Feb 20, 2013 | Signed as free agent | Francisco Diaz | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Francisco Diaz to a minor league contract. |
| Feb 20, 2013 | Signed as free agent | Angel Yepez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Angel Yepez to a minor league contract. |
| Feb 19, 2013 | Signed as free agent | Kyle Davies | — | Minnesota Twins | Minnesota Twins signed free agent RHP Kyle Davies to a minor league contract. |
| Feb 19, 2013 | Signed as free agent | Delvis Gonzalez | — | Washington Nationals | Washington Nationals signed free agent RHP Delvis Gonzalez to a minor league contract. |
| Feb 18, 2013 | Trade | Jesús Castillo | Arizona Diamondbacks | Chicago Cubs | Chicago Cubs traded CF Tony Campana to Arizona Diamondbacks for RHP Jesus Castillo and RHP Erick Leal. |
| Feb 18, 2013 | Signed as free agent | Kevin Jacob | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Kevin Jacob to a minor league contract. |
| Feb 18, 2013 | Signed as free agent | Harry Marino | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Harry Marino to a minor league contract. |
| Feb 18, 2013 | Signed as free agent | Irwin Delgado | — | San Diego Padres | San Diego Padres signed free agent LHP Irwin Delgado to a minor league contract. |
| Feb 17, 2013 | Signed as free agent | Jack Cust | — | Tampa Bay Rays | Tampa Bay Rays signed free agent DH Jack Cust to a minor league contract and invited him to spring training. |
| Feb 17, 2013 | Signed as free agent | Thomas Brendel | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Thomas Brendel to a minor league contract. |
| Feb 17, 2013 | Signed as free agent | Bobby Hillier | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Bobby Hillier to a minor league contract. |
| Feb 17, 2013 | Signed as free agent | Brandon Sinnery | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Brandon Sinnery to a minor league contract. |
| Feb 15, 2013 | Signed as free agent | Michael Bourn | — | Cleveland Guardians | Cleveland Indians signed free agent CF Michael Bourn. |
| Feb 15, 2013 | Signed as free agent | Casey Kotchman | — | Miami Marlins | Miami Marlins signed free agent 1B Casey Kotchman to a minor league contract and invited him to spring training. |
| Feb 15, 2013 | Signed as free agent | Jair Jurrjens | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Jair Jurrjens to a minor league contract and invited him to spring training. |
| Feb 15, 2013 | Signed as free agent | Matt Maloney | — | Boston Red Sox | Boston Red Sox signed free agent LHP Matt Maloney to a minor league contract. |
| Feb 15, 2013 | Signed as free agent | Ben Fritz | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Ben Fritz to a minor league contract. |
| Feb 15, 2013 | Signed as free agent | Austin Gallagher | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 1B Austin Gallagher to a minor league contract. |
| Feb 15, 2013 | Signed as free agent | Anthony Contreras | — | San Diego Padres | San Diego Padres signed free agent 2B Anthony Contreras to a minor league contract. |
| Feb 15, 2013 | Signed as free agent | Leo Heras | — | San Diego Padres | San Diego Padres signed free agent CF Leo Heras to a minor league contract. |
| Feb 15, 2013 | Signed as free agent | Evertz Orozco | — | Atlanta Braves | Atlanta Braves signed free agent RHP Evertz Orozco to a minor league contract. |
| Feb 15, 2013 | Signed as free agent | Alex Gonzalez | — | Houston Astros | Houston Astros signed free agent SS Alex Gonzalez to a minor league contract. |
| Feb 15, 2013 | Signed as free agent | Lachlan Madden | — | Houston Astros | Houston Astros signed free agent RHP Lachlan Madden to a minor league contract. |
| Feb 15, 2013 | Signed as free agent | Adonis De La Cruz | — | Seattle Mariners | Seattle Mariners signed free agent OF Adonis De La Cruz to a minor league contract. |
| Feb 14, 2013 | Signed as free agent | Rafael Perez | — | Minnesota Twins | Minnesota Twins signed free agent LHP Rafael Perez to a minor league contract and invited him to spring training. |
| Feb 14, 2013 | Trade | Reid Brignac | Tampa Bay Rays | Colorado Rockies | Tampa Bay Rays traded SS Reid Brignac to Colorado Rockies. |
| Feb 14, 2013 | Signed as free agent | Hiroyuki Kobayashi | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Hiroyuki Kobayashi to a minor league contract and invited him to spring training. |
| Feb 14, 2013 | Signed as free agent | Justin Hampson | — | New York Mets | New York Mets signed free agent LHP Justin Hampson to a minor league contract. |
| Feb 14, 2013 | Signed as free agent | James Roche | — | New York Mets | New York Mets signed free agent OF James Roche to a minor league contract. |
| Feb 13, 2013 | Signed as free agent | Brandon Inge | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent 3B Brandon Inge to a minor league contract and invited him to spring training. |
| Feb 13, 2013 | Signed as free agent | Daisuke Matsuzaka | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Daisuke Matsuzaka to a minor league contract and invited him to spring training. |
| Feb 13, 2013 | Trade | Shawn Kelley | Seattle Mariners | New York Yankees | Seattle Mariners traded RHP Shawn Kelley to New York Yankees for CF Abraham Almonte. |
| Feb 13, 2013 | Signed as free agent | Chad Cordero | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Chad Cordero to a minor league contract. |
| Feb 13, 2013 | Signed as free agent | Michael Crotta | — | Washington Nationals | Washington Nationals signed free agent RHP Michael Crotta to a minor league contract. |
| Feb 13, 2013 | Signed as free agent | Esmeiro Del Valle | — | Detroit Tigers | Detroit Tigers signed free agent RHP Esmeiro Del Valle to a minor league contract. |
| Feb 13, 2013 | Signed as free agent | Victor Guillen | — | Detroit Tigers | Detroit Tigers signed free agent RHP Victor Guillen to a minor league contract. |
| Feb 13, 2013 | Signed as free agent | Jesus Paricaguan | — | Detroit Tigers | Detroit Tigers signed free agent RHP Jesus Paricaguan to a minor league contract. |
| Feb 12, 2013 | Released | Craig Tatum | — | Miami Marlins | Miami Marlins released C Craig Tatum. |
| Feb 12, 2013 | Signed as free agent | Hideki Okajima | — | Athletics | Oakland Athletics signed free agent LHP Hideki Okajima to a minor league contract and invited him to spring training. |
| Feb 12, 2013 | Signed as free agent | Jon Garland | — | Seattle Mariners | Seattle Mariners signed free agent RHP Jon Garland to a minor league contract and invited him to spring training. |
| Feb 12, 2013 | Trade | Elliot Johnson | Tampa Bay Rays | Kansas City Royals | Tampa Bay Rays traded 2B Elliot Johnson to Kansas City Royals. |
| Feb 12, 2013 | Signed as free agent | Kameron Loe | — | Seattle Mariners | Seattle Mariners signed free agent RHP Kameron Loe to a minor league contract and invited him to spring training. |
| Feb 12, 2013 | Signed as free agent | Joe Saunders | — | Seattle Mariners | Seattle Mariners signed free agent LHP Joe Saunders. |
| Feb 12, 2013 | Signed as free agent | Niko Vasquez | — | Cincinnati Reds | Cincinnati Reds signed free agent 3B Niko Vasquez to a minor league contract. |
| Feb 12, 2013 | Signed as free agent | Matthew Sweeney | — | Kansas City Royals | Kansas City Royals signed free agent Matthew Sweeney. |
| Feb 12, 2013 | Signed as free agent | Jean Almanzar | — | Toronto Blue Jays | Toronto Blue Jays signed free agent SS Jean Almanzar to a minor league contract. |
| Feb 12, 2013 | Signed as free agent | Alvaro Maradiaga | — | Atlanta Braves | Atlanta Braves signed free agent C Alvaro Maradiaga to a minor league contract. |
| Feb 11, 2013 | Signed as free agent | Will Ohman | — | Washington Nationals | Washington Nationals signed free agent LHP Will Ohman to a minor league contract and invited him to spring training. |
| Feb 11, 2013 | Signed as free agent | Clay Hensley | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Clay Hensley to a minor league contract and invited him to spring training. |
| Feb 11, 2013 | Signed as free agent | Rod Barajas | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent C Rod Barajas to a minor league contract and invited him to spring training. |
| Feb 11, 2013 | Signed as free agent | Sean Henn | — | Boston Red Sox | Boston Red Sox signed free agent LHP Sean Henn to a minor league contract. |
| Feb 11, 2013 | Signed as free agent | Dakota Mitchell | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Dakota Mitchell to a minor league contract. |
| Feb 11, 2013 | Signed as free agent | Zach Jackson | — | Kansas City Royals | Kansas City Royals signed free agent LHP Zach Jackson to a minor league contract. |
| Feb 11, 2013 | Signed as free agent | Adonis Uceta | — | New York Mets | New York Mets signed free agent RHP Adonis Uceta to a minor league contract. |
| Feb 10, 2013 | Signed as free agent | Scott Hairston | — | Chicago Cubs | Chicago Cubs signed free agent Scott Hairston. |
| Feb 10, 2013 | Signed as free agent | Kevin Gregg | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Kevin Gregg to a minor league contract and invited him to spring training. |
| Feb 10, 2013 | Signed as free agent | Reynaldo Cotilla | — | Boston Red Sox | Boston Red Sox signed free agent RHP Reynaldo Cotilla to a minor league contract. |
| Feb 9, 2013 | Signed as free agent | Jason Giambi | — | Cleveland Guardians | Cleveland Indians signed free agent 1B Jason Giambi to a minor league contract and invited him to spring training. |
| Feb 9, 2013 | Signed as free agent | Mitchell Beacom | — | Kansas City Royals | Kansas City Royals signed free agent LHP Mitchell Beacom to a minor league contract. |
| Feb 9, 2013 | Signed as free agent | Brett Anderson | — | Texas Rangers | Texas Rangers signed free agent RHP Brett Anderson to a minor league contract. |
| Feb 9, 2013 | Signed as free agent | Junnell Ledezma | — | Detroit Tigers | Detroit Tigers signed free agent IF Junnell Ledezma to a minor league contract. |
| Feb 8, 2013 | Signed as free agent | Brandon Lyon | — | New York Mets | New York Mets signed free agent RHP Brandon Lyon. |
| Feb 8, 2013 | Signed as free agent | Francisco Liriano | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Francisco Liriano. |
| Feb 8, 2013 | Signed as free agent | Chone Figgins | — | Miami Marlins | Miami Marlins signed free agent 3B Chone Figgins to a minor league contract and invited him to spring training. |
| Feb 8, 2013 | Signed as free agent | Mark Lowe | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Mark Lowe to a minor league contract and invited him to spring training. |
| Feb 8, 2013 | Signed as free agent | Luis Torres | — | Washington Nationals | Washington Nationals signed free agent RHP Luis Torres to a minor league contract. |
| Feb 7, 2013 | Signed as free agent | Rich Hill | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Rich Hill to a minor league contract and invited him to spring training. |
| Feb 7, 2013 | Signed as free agent | Kelly Shoppach | — | Seattle Mariners | Seattle Mariners signed free agent C Kelly Shoppach. |
| Feb 7, 2013 | Signed as free agent | Kyle Hudson | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Kyle Hudson to a minor league contract. |
| Feb 7, 2013 | Signed as free agent | P.J. Phillips | — | Cincinnati Reds | Cincinnati Reds signed free agent P.J. Phillips. |
| Feb 7, 2013 | Signed as free agent | Corey Young | — | Philadelphia Phillies | Philadelphia Phillies signed free agent Corey Young. |
| Feb 7, 2013 | Signed as free agent | Devin Ivany | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Devin Ivany to a minor league contract. |
| Feb 7, 2013 | Signed as free agent | Jonathan Kountis | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Jonathan Kountis to a minor league contract. |
| Feb 7, 2013 | Signed as free agent | Ryan Strieby | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 1B Ryan Strieby to a minor league contract. |
| Feb 7, 2013 | Signed as free agent | Jordany Santana | — | Atlanta Braves | Atlanta Braves signed free agent RHP Jordany Santana to a minor league contract. |
| Feb 7, 2013 | Signed as free agent | Michael Beltre | — | Cincinnati Reds | Cincinnati Reds signed free agent OF Michael Beltre to a minor league contract. |
| Feb 6, 2013 | Signed as free agent | Jonathan Sánchez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent LHP Jonathan Sanchez to a minor league contract and invited him to spring training. |
| Feb 6, 2013 | Signed as free agent | Micah Owings | — | Washington Nationals | Washington Nationals signed free agent 1B Micah Owings to a minor league contract and invited him to spring training. |
| Feb 6, 2013 | Signed as free agent | Álex González | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 1B Alex Gonzalez. |
| Feb 6, 2013 | Signed as free agent | Luke Scott | — | Tampa Bay Rays | Tampa Bay Rays signed free agent DH Luke Scott. |
| Feb 6, 2013 | Signed as free agent | Zane Chavez | — | Baltimore Orioles | Baltimore Orioles signed free agent C Zane Chavez to a minor league contract. |
| Feb 6, 2013 | Signed as free agent | Kanekoa Texeira | — | Cincinnati Reds | Cincinnati Reds signed free agent Kanekoa Texeira. |
| Feb 6, 2013 | Signed as free agent | Sean White | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Sean White to a minor league contract. |
| Feb 6, 2013 | Signed as free agent | Roman Colon | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Roman Colon to a minor league contract. |
| Feb 5, 2013 | Signed as free agent | Omir Santos | — | Cleveland Guardians | Cleveland Indians signed free agent C Omir Santos to a minor league contract and invited him to spring training. |
| Feb 5, 2013 | Signed as free agent | Jon Rauch | — | Miami Marlins | Miami Marlins signed free agent RHP Jon Rauch. |
| Feb 5, 2013 | Signed as free agent | Jeremy Hermida | — | Cleveland Guardians | Cleveland Indians signed free agent RF Jeremy Hermida to a minor league contract and invited him to spring training. |
| Feb 5, 2013 | Signed as free agent | Kyle Farnsworth | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Kyle Farnsworth. |
| Feb 5, 2013 | Signed as free agent | Kelly Johnson | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LF Kelly Johnson. |
| Feb 5, 2013 | Signed as free agent | Miguel Batista | — | Colorado Rockies | Colorado Rockies signed free agent RHP Miguel Batista to a minor league contract and invited him to spring training. |
| Feb 5, 2013 | Signed as free agent | Jeremy Accardo | — | Washington Nationals | Washington Nationals signed free agent RHP Jeremy Accardo to a minor league contract and invited him to spring training. |
| Feb 5, 2013 | Signed as free agent | Tim Torres | — | Chicago Cubs | Chicago Cubs signed free agent 2B Tim Torres to a minor league contract. |
| Feb 5, 2013 | Signed as free agent | Drew Benes | — | Texas Rangers | Texas Rangers signed free agent RHP Drew Benes to a minor league contract. |
| Feb 5, 2013 | Signed as free agent | Adrian Green | — | Washington Nationals | Washington Nationals signed free agent RHP Adrian Green to a minor league contract. |
| Feb 5, 2013 | Signed as free agent | Edgardo Hernandez | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Edgardo Hernandez to a minor league contract. |
| Feb 5, 2013 | Signed as free agent | Dionisio Corro | — | Washington Nationals | Washington Nationals signed free agent RHP Dionisio Corro to a minor league contract. |
| Feb 4, 2013 | Trade | Jed Lowrie | Houston Astros | Athletics | Houston Astros traded SS Jed Lowrie and RHP Fernando Rodriguez to Oakland Athletics for 1B Chris Carter, RHP Brad Peacock and C Max Stassi. |
| Feb 4, 2013 | Signed as free agent | Chris Volstad | — | Colorado Rockies | Colorado Rockies signed free agent RHP Chris Volstad to a minor league contract and invited him to spring training. |
| Feb 4, 2013 | Signed as free agent | Ramon E Ramirez | — | San Francisco Giants | San Francisco Giants signed free agent RHP Ramon Ramirez to a minor league contract and invited him to spring training. |
| Feb 4, 2013 | Signed as free agent | Wes Whisler | — | Chicago White Sox | Chicago White Sox signed free agent LHP Wes Whisler to a minor league contract. |
| Feb 3, 2013 | Signed as free agent | Henry Garcia | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent LHP Henry Garcia to a minor league contract. |
| Feb 1, 2013 | Signed as free agent | Miguel Olivo | — | Cincinnati Reds | Cincinnati Reds signed free agent C Miguel Olivo to a minor league contract and invited him to spring training. |
| Feb 1, 2013 | Signed as free agent | Travis Hafner | — | New York Yankees | New York Yankees signed free agent DH Travis Hafner. |
| Feb 1, 2013 | Signed as free agent | Marlon Byrd | — | New York Mets | New York Mets signed free agent RF Marlon Byrd to a minor league contract and invited him to spring training. |
| Feb 1, 2013 | Signed as free agent | Manny Parra | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Manny Parra. |
| Feb 1, 2013 | Signed as free agent | Mark Hendrickson | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Mark Hendrickson to a minor league contract and invited him to spring training. |
| Feb 1, 2013 | Signed as free agent | Joel Pineiro | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Joel Pineiro to a minor league contract. |
| Feb 1, 2013 | Signed as free agent | Adam Buschini | — | San Diego Padres | San Diego Padres signed free agent 2B Adam Buschini to a minor league contract. |
| Feb 1, 2013 | Signed as free agent | Chris Snyder | — | Washington Nationals | Washington Nationals signed free agent C Chris Snyder to a minor league contract and invited him to spring training. |
| Feb 1, 2013 | Signed as free agent | Matt Tolbert | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 2B Matt Tolbert to a minor league contract. |
| Feb 1, 2013 | Signed as free agent | Doug Bernier | — | Minnesota Twins | Minnesota Twins signed free agent SS Doug Bernier to a minor league contract. |
| Feb 1, 2013 | Signed as free agent | Antoan Richardson | — | Minnesota Twins | Minnesota Twins signed free agent CF Antoan Richardson to a minor league contract. |
| Feb 1, 2013 | Signed as free agent | Josh Geer | — | San Diego Padres | San Diego Padres signed free agent RHP Josh Geer to a minor league contract. |
| Feb 1, 2013 | Signed as free agent | Diory Paulino | — | St. Louis Cardinals | St. Louis Cardinals signed free agent SS Diory Paulino to a minor league contract. |
| Feb 1, 2013 | Signed as free agent | Jhenderson Hurtado | — | Athletics | Oakland Athletics signed free agent LHP Jhenderson Hurtado to a minor league contract. |
| Jan 31, 2013 | Signed as free agent | LaTroy Hawkins | — | New York Mets | New York Mets signed free agent RHP LaTroy Hawkins to a minor league contract and invited him to spring training. |
| Jan 31, 2013 | Signed as free agent | Alfredo Figaro | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Alfredo Figaro to a minor league contract and invited him to spring training. |
| Jan 31, 2013 | Signed as free agent | Matt Capps | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Matt Capps to a minor league contract and invited him to spring training. |
| Jan 31, 2013 | Signed as free agent | Dan Johnson | — | New York Yankees | New York Yankees signed free agent 1B Dan Johnson to a minor league contract and invited him to spring training. |
| Jan 31, 2013 | Signed as free agent | Lyle Overbay | — | Boston Red Sox | Boston Red Sox signed free agent 1B Lyle Overbay to a minor league contract and invited him to spring training. |
| Jan 31, 2013 | Signed as free agent | Moises Hernandez | — | Seattle Mariners | Seattle Mariners signed free agent RHP Moises Hernandez to a minor league contract. |
| Jan 31, 2013 | Signed as free agent | Chad Huffman | — | St. Louis Cardinals | St. Louis Cardinals signed free agent RF Chad Huffman to a minor league contract. |
| Jan 30, 2013 | Signed as free agent | Shaun Marcum | — | New York Mets | New York Mets signed free agent RHP Shaun Marcum. |
| Jan 30, 2013 | Signed as free agent | Andy LaRoche | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 3B Andy LaRoche to a minor league contract and invited him to spring training. |
| Jan 30, 2013 | Signed as free agent | Bill Hall | — | Los Angeles Angels | Los Angeles Angels signed free agent 2B Bill Hall to a minor league contract and invited him to spring training. |
| Jan 30, 2013 | Signed as free agent | Corey Patterson | — | New York Mets | New York Mets signed free agent OF Corey Patterson to a minor league contract. |
| Jan 30, 2013 | Signed as free agent | Mike Wilson | — | New York Mets | New York Mets signed free agent RF Mike Wilson to a minor league contract. |
| Jan 30, 2013 | Signed as free agent | Nathan Maldonado | — | Chicago Cubs | Chicago Cubs signed free agent C Nathan Maldonado to a minor league contract. |
| Jan 30, 2013 | Signed as free agent | Elio Sarmiento | — | Los Angeles Angels | Los Angeles Angels signed free agent C Elio Sarmiento to a minor league contract. |
| Jan 30, 2013 | Signed as free agent | Pedro Diaz | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Pedro Diaz to a minor league contract. |
| Jan 30, 2013 | Signed as free agent | Jonathan Hernández | — | Texas Rangers | Texas Rangers signed free agent RHP Jonathan Hernandez to a minor league contract. |
| Jan 29, 2013 | Signed as free agent | Scott Atchison | — | New York Mets | New York Mets signed free agent RHP Scott Atchison to a minor league contract and invited him to spring training. |
| Jan 29, 2013 | Signed as free agent | Chad Durbin | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Chad Durbin. |
| Jan 29, 2013 | Signed as free agent | Tim Stauffer | — | San Diego Padres | San Diego Padres signed free agent RHP Tim Stauffer to a minor league contract and invited him to spring training. |
| Jan 29, 2013 | Signed as free agent | Arturo Lopez | — | San Diego Padres | San Diego Padres signed free agent LHP Arturo Lopez to a minor league contract and invited him to spring training. |
| Jan 29, 2013 | Signed as free agent | Kyle Waldrop | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Kyle Waldrop to a minor league contract and invited him to spring training. |
| Jan 29, 2013 | Signed as free agent | Chris Dickerson | — | Baltimore Orioles | Baltimore Orioles signed free agent LF Chris Dickerson to a minor league contract and invited him to spring training. |
| Jan 29, 2013 | Signed as free agent | Kurt Fleming | — | Seattle Mariners | Seattle Mariners signed free agent OF Kurt Fleming to a minor league contract. |
| Jan 28, 2013 | Signed as free agent | Yuniesky Betancourt | — | Philadelphia Phillies | Philadelphia Phillies signed free agent 2B Yuniesky Betancourt to a minor league contract and invited him to spring training. |
| Jan 28, 2013 | Signed as free agent | Ronny Cedeno | — | St. Louis Cardinals | St. Louis Cardinals signed free agent SS Ronny Cedeno. |
| Jan 28, 2013 | Signed as free agent | Robert Coello | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Robert Coello to a minor league contract and invited him to spring training. |
| Jan 28, 2013 | Signed as free agent | Freddy Garcia | — | San Diego Padres | San Diego Padres signed free agent RHP Freddy Garcia to a minor league contract and invited him to spring training. |
| Jan 28, 2013 | Signed as free agent | Juan Rivera | — | New York Yankees | New York Yankees signed free agent LF Juan Rivera to a minor league contract and invited him to spring training. |
| Jan 28, 2013 | Signed as free agent | Chris Pettit | — | Baltimore Orioles | Baltimore Orioles signed free agent LF Chris Pettit to a minor league contract. |
| Jan 28, 2013 | Signed as free agent | Manny Delcarmen | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Manny Delcarmen to a minor league contract. |
| Jan 28, 2013 | Signed as free agent | Bobby Buckner | — | Chicago Cubs | Chicago Cubs signed free agent OF Bobby Buckner to a minor league contract. |
| Jan 28, 2013 | Signed as free agent | Matt Mangini | — | Cincinnati Reds | Cincinnati Reds signed free agent 3B Matt Mangini to a minor league contract. |
| Jan 28, 2013 | Signed as free agent | Carlos Fisher | — | Athletics | Oakland Athletics signed free agent RHP Carlos Fisher to a minor league contract. |
| Jan 28, 2013 | Signed as free agent | Matt Bischoff | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Matt Bischoff to a minor league contract. |
| Jan 28, 2013 | Signed as free agent | Kevin Escorcia | — | Chicago White Sox | Chicago White Sox signed free agent LHP Kevin Escorcia to a minor league contract. |
| Jan 28, 2013 | Signed as free agent | Alexander Guillen | — | Colorado Rockies | Colorado Rockies signed free agent RHP Alexander Guillen to a minor league contract. |
| Jan 27, 2013 | Signed as free agent | Jamie Richmond | — | Kansas City Royals | Kansas City Royals signed free agent RHP Jamie Richmond to a minor league contract. |
| Jan 26, 2013 | Signed as free agent | Jeff Baker | — | Texas Rangers | Texas Rangers signed free agent 2B Jeff Baker to a minor league contract and invited him to spring training. |
| Jan 26, 2013 | Signed as free agent | Nate Robertson | — | Texas Rangers | Texas Rangers signed free agent LHP Nate Robertson to a minor league contract and invited him to spring training. |
| Jan 26, 2013 | Signed as free agent | Carlos Villanueva | — | Chicago Cubs | Chicago Cubs signed free agent RHP Carlos Villanueva. |
| Jan 26, 2013 | Signed as free agent | Greg Golson | — | Colorado Rockies | Colorado Rockies signed free agent OF Greg Golson to a minor league contract. |
| Jan 26, 2013 | Signed as free agent | Chris Nowak | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent 3B Chris Nowak to a minor league contract. |
| Jan 26, 2013 | Signed as free agent | Eric Niesen | — | Seattle Mariners | Seattle Mariners signed free agent LHP Eric Niesen to a minor league contract. |
| Jan 26, 2013 | Signed as free agent | David Newmann | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP David Newmann to a minor league contract. |
| Jan 25, 2013 | Signed as free agent | Matt Lindstrom | — | Chicago White Sox | Chicago White Sox signed free agent RHP Matt Lindstrom. |
| Jan 25, 2013 | Signed as free agent | Ronny Paulino | — | Seattle Mariners | Seattle Mariners signed free agent C Ronny Paulino to a minor league contract and invited him to spring training. |
| Jan 25, 2013 | Signed as free agent | Chad Qualls | — | Miami Marlins | Miami Marlins signed free agent RHP Chad Qualls to a minor league contract and invited him to spring training. |
| Jan 25, 2013 | Signed as free agent | Charlie Haeger | — | Boston Red Sox | Boston Red Sox signed free agent RHP Charlie Haeger to a minor league contract. |
| Jan 25, 2013 | Signed as free agent | Christian Perdomo | — | Boston Red Sox | Boston Red Sox signed free agent LHP Christian Perdomo to a minor league contract. |
| Jan 25, 2013 | Signed as free agent | Lewis Urena | — | Kansas City Royals | Kansas City Royals signed free agent 2B Lewis Urena to a minor league contract. |
| Jan 25, 2013 | Signed as free agent | Pedro Viola | — | Athletics | Oakland Athletics signed free agent LHP Pedro Viola to a minor league contract. |
| Jan 25, 2013 | Signed as free agent | Ryan Sweeney | — | Boston Red Sox | Boston Red Sox signed free agent RF Ryan Sweeney to a minor league contract and invited him to spring training. |
| Jan 24, 2013 | Trade | Zeke Spruill | Atlanta Braves | Arizona Diamondbacks | Arizona Diamondbacks traded LF Justin Upton and 3B Chris Johnson to Atlanta Braves for 3B Martin Prado, RHP Randall Delgado, RHP Zeke Spruill, SS Nick Ahmed and 3B Brandon Drury. |
| Jan 24, 2013 | Signed as free agent | Yorvit Torrealba | — | Colorado Rockies | Colorado Rockies signed free agent C Yorvit Torrealba to a minor league contract and invited him to spring training. |
| Jan 24, 2013 | Signed as free agent | Andrew Brackman | — | Chicago White Sox | Chicago White Sox signed free agent RHP Andrew Brackman to a minor league contract. |
| Jan 24, 2013 | Signed as free agent | Andrickson Zorrilla | — | Baltimore Orioles | Baltimore Orioles signed free agent OF Andrickson Zorrilla to a minor league contract. |
| Jan 24, 2013 | Signed as free agent | Shaun Ellis | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Shaun Ellis to a minor league contract. |
| Jan 24, 2013 | Signed as free agent | Jaylen Harris | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent CF Jaylen Harris to a minor league contract. |
| Jan 24, 2013 | Signed as free agent | Jhonny Hernandez | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Jhonny Hernandez to a minor league contract. |
| Jan 24, 2013 | Signed as free agent | Jairo Rosario | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Jairo Rosario to a minor league contract. |
| Jan 24, 2013 | Signed as free agent | Deivy Consuegra | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 2B Deivy Consuegra to a minor league contract. |
| Jan 24, 2013 | Signed as free agent | Jerad Head | — | Washington Nationals | Washington Nationals signed free agent LF Jerad Head to a minor league contract. |
| Jan 24, 2013 | Signed as free agent | Adrian Navas | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Adrian Navas to a minor league contract. |
| Jan 23, 2013 | Signed as free agent | Joe Mather | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RF Joe Mather to a minor league contract and invited him to spring training. |
| Jan 23, 2013 | Signed as free agent | Rob Delaney | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Rob Delaney to a minor league contract. |
| Jan 23, 2013 | Signed as free agent | Derek Hankins | — | Detroit Tigers | Detroit Tigers signed free agent RHP Derek Hankins to a minor league contract. |
| Jan 23, 2013 | Signed as free agent | Mike DeMark | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Mike DeMark to a minor league contract. |
| Jan 23, 2013 | Signed as free agent | Marc Magliaro | — | Colorado Rockies | Colorado Rockies signed free agent RHP Marc Magliaro to a minor league contract. |
| Jan 23, 2013 | Signed as free agent | Chris Smith | — | New York Yankees | New York Yankees signed free agent RHP Chris Smith to a minor league contract. |
| Jan 23, 2013 | Signed as free agent | Emilio Vargas | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Emilio Vargas to a minor league contract. |
| Jan 22, 2013 | Signed as free agent | Mark DeRosa | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 2B Mark DeRosa. |
| Jan 22, 2013 | Signed as free agent | Mike Napoli | — | Boston Red Sox | Boston Red Sox signed free agent 1B Mike Napoli. |
| Jan 22, 2013 | Signed as free agent | Delmon Young | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RF Delmon Young. |
| Jan 22, 2013 | Signed as free agent | Bobby Crosby | — | Milwaukee Brewers | Milwaukee Brewers signed free agent 3B Bobby Crosby to a minor league contract and invited him to spring training. |
| Jan 22, 2013 | Signed as free agent | Jamey Wright | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Jamey Wright to a minor league contract and invited him to spring training. |
| Jan 22, 2013 | Signed as free agent | Shelley Duncan | — | Tampa Bay Rays | Tampa Bay Rays signed free agent LF Shelley Duncan to a minor league contract and invited him to spring training. |
| Jan 22, 2013 | Signed as free agent | Juan Carlos Oviedo | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Juan Carlos Oviedo to a minor league contract and invited him to spring training. |
| Jan 22, 2013 | Signed as free agent | Zach Staniewicz | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Zach Staniewicz to a minor league contract. |
| Jan 22, 2013 | Released | Jo-Jo Reyes | — | Los Angeles Angels | Los Angeles Angels released LHP Jo-Jo Reyes. |
| Jan 22, 2013 | Signed as free agent | Ryan Garko | — | Colorado Rockies | Colorado Rockies signed free agent 1B Ryan Garko to a minor league contract. |
| Jan 22, 2013 | Signed as free agent | Josh Romanski | — | New York Yankees | New York Yankees signed free agent LHP Josh Romanski to a minor league contract. |
| Jan 22, 2013 | Signed as free agent | Leugim Barroso | — | New York Yankees | New York Yankees signed free agent SS Leugim Barroso to a minor league contract. |
| Jan 22, 2013 | Signed as free agent | Fernando Soler | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Fernando Soler to a minor league contract. |
| Jan 22, 2013 | Signed as free agent | Franklyn Kilome | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Franklyn Kilome to a minor league contract. |
| Jan 21, 2013 | Signed as free agent | Ben Francisco | — | Cleveland Guardians | Cleveland Indians signed free agent LF Ben Francisco to a minor league contract and invited him to spring training. |
| Jan 21, 2013 | Signed as free agent | Ryan Raburn | — | Cleveland Guardians | Cleveland Indians signed free agent 2B Ryan Raburn to a minor league contract and invited him to spring training. |
| Jan 21, 2013 | Signed as free agent | Erik Bedard | — | Houston Astros | Houston Astros signed free agent LHP Erik Bedard to a minor league contract and invited him to spring training. |
| Jan 21, 2013 | Signed as free agent | Pedro Feliciano | — | New York Mets | New York Mets signed free agent LHP Pedro Feliciano to a minor league contract and invited him to spring training. |
| Jan 20, 2013 | Signed as free agent | Yohan Pino | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Yohan Pino to a minor league contract. |
| Jan 20, 2013 | Signed as free agent | Kelvin Castro | — | New York Yankees | New York Yankees signed free agent RHP Kelvin Castro to a minor league contract. |
| Jan 19, 2013 | Signed as free agent | Eric Pfisterer | — | Atlanta Braves | Atlanta Braves signed free agent LHP Eric Pfisterer to a minor league contract. |
| Jan 19, 2013 | Signed as free agent | James Skelton | — | Colorado Rockies | Colorado Rockies signed free agent C James Skelton to a minor league contract. |
| Jan 19, 2013 | Signed as free agent | Carlos Perdomo | — | Houston Astros | Houston Astros signed free agent 2B Carlos Perdomo to a minor league contract. |
| Jan 19, 2013 | Signed as free agent | Sean Kazmar Jr. | — | Atlanta Braves | Atlanta Braves signed free agent SS Sean Kazmar to a minor league contract. |
| Jan 18, 2013 | Signed as free agent | Robinzon Díaz | — | Milwaukee Brewers | Milwaukee Brewers signed free agent C Robinzon Diaz to a minor league contract. |
| Jan 18, 2013 | Signed as free agent | Landon Powell | — | New York Mets | New York Mets signed free agent C Landon Powell to a minor league contract and invited him to spring training. |
| Jan 18, 2013 | Signed as free agent | Thomas Neal | — | New York Yankees | New York Yankees signed free agent LF Thomas Neal to a minor league contract and invited him to spring training. |
| Jan 18, 2013 | Signed as free agent | Matt Downs | — | Miami Marlins | Miami Marlins signed free agent 1B Matt Downs to a minor league contract and invited him to spring training. |
| Jan 18, 2013 | Signed as free agent | Ryan Harvey | — | Atlanta Braves | Atlanta Braves signed free agent OF Ryan Harvey to a minor league contract. |
| Jan 18, 2013 | Signed as free agent | Kyle Cofield | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Kyle Cofield to a minor league contract. |
| Jan 18, 2013 | Signed as free agent | Tug Hulett | — | Miami Marlins | Miami Marlins signed free agent 3B Tug Hulett to a minor league contract. |
| Jan 18, 2013 | Signed as free agent | Emmanuel Tapia | — | Cleveland Guardians | Cleveland Indians signed free agent 1B Emmanuel Tapia to a minor league contract. |
| Jan 17, 2013 | Signed as free agent | Jeff Karstens | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent RHP Jeff Karstens. |
| Jan 17, 2013 | Signed as free agent | Rafael Soriano | — | Washington Nationals | Washington Nationals signed free agent RHP Rafael Soriano. |
| Jan 17, 2013 | Signed as free agent | Rick Ankiel | — | Houston Astros | Houston Astros signed free agent CF Rick Ankiel to a minor league contract and invited him to spring training. |
| Jan 17, 2013 | Signed as free agent | Armando Galarraga | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Armando Galarraga to a minor league contract and invited him to spring training. |
| Jan 17, 2013 | Signed as free agent | Mitch Talbot | — | Miami Marlins | Miami Marlins signed free agent RHP Mitch Talbot to a minor league contract and invited him to spring training. |
| Jan 17, 2013 | Signed as free agent | Mattia Mercuri | — | Atlanta Braves | Atlanta Braves signed free agent 2B Mattia Mercuri to a minor league contract. |
| Jan 17, 2013 | Signed as free agent | Jair Fernandez | — | Chicago Cubs | Chicago Cubs signed free agent C Jair Fernandez to a minor league contract. |
| Jan 17, 2013 | Signed as free agent | Chad Reineke | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Chad Reineke to a minor league contract. |
| Jan 17, 2013 | Signed as free agent | Jonathan Roof | — | Detroit Tigers | Detroit Tigers signed free agent RF Jonathan Roof to a minor league contract. |
| Jan 17, 2013 | Signed as free agent | Mario Santiago | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Mario Santiago to a minor league contract. |
| Jan 17, 2013 | Signed as free agent | Ryan Mount | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 2B Ryan Mount to a minor league contract. |
| Jan 17, 2013 | Signed as free agent | Todd Linden | — | San Francisco Giants | San Francisco Giants signed free agent LF Todd Linden to a minor league contract. |
| Jan 17, 2013 | Signed | R.C. Orlan | — | Washington Nationals | Washington Nationals signed LHP Robert Orlan. |
| Jan 16, 2013 | Signed as free agent | Don Kelly | — | Detroit Tigers | Detroit Tigers signed free agent 3B Don Kelly to a minor league contract and invited him to spring training. |
| Jan 16, 2013 | Signed as free agent | Aaron Cook | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Aaron Cook to a minor league contract and invited him to spring training. |
| Jan 16, 2013 | Signed as free agent | Juan Cruz | — | Philadelphia Phillies | Philadelphia Phillies signed free agent Juan Cruz. |
| Jan 16, 2013 | Trade | Blake Treinen | Athletics | Washington Nationals | Washington Nationals Traded LF Michael Morse to Seattle Mariners; Seattle Mariners Traded C John Jaso to Oakland Athletics and Oakland Athletics Traded RHP A.J. Cole and RHP Blake Treinen to Washington Nationals. |
| Jan 16, 2013 | Signed as free agent | Jesus Flores | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Jesus Flores to a minor league contract and invited him to spring training. |
| Jan 16, 2013 | Signed as free agent | Will Startup | — | Detroit Tigers | Detroit Tigers signed free agent LHP Will Startup to a minor league contract. |
| Jan 16, 2013 | Signed as free agent | Victor Garate | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent Victor Garate. |
| Jan 16, 2013 | Signed as free agent | Brian Bass | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Brian Bass to a minor league contract. |
| Jan 16, 2013 | Signed as free agent | Matt Torra | — | Washington Nationals | Washington Nationals signed free agent RHP Matt Torra to a minor league contract. |
| Jan 15, 2013 | Signed as free agent | Kyle McClellan | — | Texas Rangers | Texas Rangers signed free agent RHP Kyle McClellan to a minor league contract and invited him to spring training. |
| Jan 15, 2013 | Signed as free agent | Ryan Feierabend | — | Texas Rangers | Texas Rangers signed free agent LHP Ryan Feierabend to a minor league contract. |
| Jan 15, 2013 | Signed as free agent | Kevin Pucetas | — | Texas Rangers | Texas Rangers signed free agent RHP Kevin Pucetas to a minor league contract. |
| Jan 15, 2013 | Signed as free agent | Nick Green | — | Miami Marlins | Miami Marlins signed free agent 2B Nick Green to a minor league contract and invited him to spring training. |
| Jan 15, 2013 | Signed as free agent | Peter Moylan | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Peter Moylan to a minor league contract and invited him to spring training. |
| Jan 15, 2013 | Signed as free agent | Kevin Slowey | — | Miami Marlins | Miami Marlins signed free agent RHP Kevin Slowey to a minor league contract and invited him to spring training. |
| Jan 15, 2013 | Signed as free agent | Jarrett Hoffpauir | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 3B Jarrett Hoffpauir to a minor league contract. |
| Jan 15, 2013 | Signed as free agent | Rich Rundles | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP Rich Rundles to a minor league contract. |
| Jan 15, 2013 | Signed | Mitch Glasser | — | Chicago White Sox | Chicago White Sox signed 2B Mitch Glasser. |
| Jan 15, 2013 | Signed as free agent | Steve Domecus | — | Colorado Rockies | Colorado Rockies signed free agent C Steve Domecus to a minor league contract. |
| Jan 15, 2013 | Signed as free agent | Pat White | — | Miami Marlins | Miami Marlins signed free agent OF Pat White to a minor league contract. |
| Jan 15, 2013 | Signed as free agent | Dario Alvarez | — | New York Mets | New York Mets signed free agent LHP Dario Alvarez to a minor league contract. |
| Jan 15, 2013 | Signed as free agent | Matt Yourkin | — | San Francisco Giants | San Francisco Giants signed free agent LHP Matt Yourkin to a minor league contract. |
| Jan 15, 2013 | Signed as free agent | Austin Bibens-Dirkx | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Austin Bibens-Dirkx to a minor league contract. |
| Jan 15, 2013 | Signed as free agent | Brian Sweeney | — | Seattle Mariners | Seattle Mariners signed free agent RHP Brian Sweeney to a minor league contract. |
| Jan 15, 2013 | Signed as free agent | Alfredo Perez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent LHP Alfredo Perez to a minor league contract. |
| Jan 15, 2013 | Signed as free agent | Tommy Manzella | — | Colorado Rockies | Colorado Rockies signed free agent SS Tommy Manzella to a minor league contract. |
| Jan 14, 2013 | Signed as free agent | Austin Kearns | — | Miami Marlins | Miami Marlins signed free agent LF Austin Kearns to a minor league contract and invited him to spring training. |
| Jan 14, 2013 | Signed as free agent | Deivy Castillo | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent OF Deivy Castillo to a minor league contract. |
| Jan 14, 2013 | Signed as free agent | Ravel Hernandez | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent SS Ravel Hernandez to a minor league contract. |
| Jan 14, 2013 | Signed as free agent | Miguel Urena | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Miguel Urena to a minor league contract. |
| Jan 14, 2013 | Signed as free agent | Reegie Corona | — | New York Yankees | New York Yankees signed free agent 2B Reegie Corona to a minor league contract. |
| Jan 12, 2013 | Signed as free agent | Rodrigo Lopez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent RHP Rodrigo Lopez to a minor league contract and invited him to spring training. |
| Jan 12, 2013 | Signed as free agent | Adam Loewen | — | Toronto Blue Jays | Toronto Blue Jays signed free agent 1B Adam Loewen to a minor league contract and invited him to spring training. |
| Jan 12, 2013 | Signed as free agent | Charles Thomas | — | Kansas City Royals | Kansas City Royals signed free agent LF Charles Thomas to a minor league contract. |
| Jan 12, 2013 | Signed as free agent | Patrick Arnold | — | Minnesota Twins | Minnesota Twins signed free agent RHP Patrick Arnold to a minor league contract. |
| Jan 12, 2013 | Signed as free agent | Denis Diaz | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Denis Diaz to a minor league contract. |
| Jan 11, 2013 | Signed as free agent | Henry Blanco | — | Toronto Blue Jays | Toronto Blue Jays signed free agent C Henry Blanco. |
| Jan 11, 2013 | Signed as free agent | Fernando Cabrera | — | Los Angeles Angels | Los Angeles Angels signed free agent RHP Fernando Cabrera to a minor league contract and invited him to spring training. |
| Jan 11, 2013 | Released | Thomas Neal | — | Cleveland Guardians | Cleveland Indians released LF Thomas Neal. |
| Jan 11, 2013 | Released | Chris Dickerson | — | New York Yankees | New York Yankees released LF Chris Dickerson. |
| Jan 11, 2013 | Signed as free agent | Jimmy Swift | — | Los Angeles Angels | Los Angeles Angels signed free agent 3B Jimmy Swift to a minor league contract. |
| Jan 11, 2013 | Signed as free agent | Miguel Perez | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Miguel Perez to a minor league contract. |
| Jan 11, 2013 | Signed as free agent | Kensuke Tanaka | — | San Francisco Giants | San Francisco Giants signed free agent 2B Kensuke Tanaka to a minor league contract and invited him to spring training. |
| Jan 11, 2013 | Released | Eric Hacker | — | San Francisco Giants | San Francisco Giants released RHP Eric Hacker. |
| Jan 11, 2013 | Signed as free agent | Delwyn Young | — | Washington Nationals | Washington Nationals signed free agent RF Delwyn Young to a minor league contract. |
| Jan 11, 2013 | Signed as free agent | Luis Jimenez | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Luis Jimenez to a minor league contract. |
| Jan 10, 2013 | Signed as free agent | Kelvim Escobar | — | Milwaukee Brewers | Milwaukee Brewers signed free agent RHP Kelvim Escobar to a minor league contract and invited him to spring training. |
| Jan 10, 2013 | Signed as free agent | Darnell McDonald | — | Chicago Cubs | Chicago Cubs signed free agent LF Darnell McDonald to a minor league contract and invited him to spring training. |
| Jan 10, 2013 | Signed as free agent | Brent Lillibridge | — | Chicago Cubs | Chicago Cubs signed free agent SS Brent Lillibridge to a minor league contract and invited him to spring training. |
| Jan 10, 2013 | Signed as free agent | Brad Snyder | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RF Brad Snyder to a minor league contract and invited him to spring training. |
| Jan 10, 2013 | Signed as free agent | Garrett Mock | — | Arizona Diamondbacks | Arizona Diamondbacks signed free agent RHP Garrett Mock to a minor league contract and invited him to spring training. |
| Jan 10, 2013 | Signed as free agent | Bobby Wilson | — | New York Yankees | New York Yankees signed free agent C Bobby Wilson to a minor league contract and invited him to spring training. |
| Jan 10, 2013 | Signed as free agent | Travis Adair | — | Baltimore Orioles | Baltimore Orioles signed free agent 2B Travis Adair to a minor league contract. |
| Jan 10, 2013 | Signed as free agent | Nicholas Giarraputo | — | Chicago White Sox | Chicago White Sox signed free agent 3B Nicholas Giarraputo to a minor league contract. |
| Jan 10, 2013 | Signed as free agent | Pat Misch | — | Detroit Tigers | Detroit Tigers signed free agent LHP Pat Misch to a minor league contract. |
| Jan 10, 2013 | Signed as free agent | Chuckie Caufield | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LF Chuckie Caufield to a minor league contract. |
| Jan 10, 2013 | Signed as free agent | Casey Upperman | — | Washington Nationals | Washington Nationals signed free agent RHP Casey Upperman to a minor league contract. |
| Jan 10, 2013 | Signed as free agent | Greg Reynolds | — | Cincinnati Reds | Cincinnati Reds signed free agent RHP Greg Reynolds to a minor league contract. |
| Jan 10, 2013 | Signed as free agent | Jesus Merchan | — | San Diego Padres | San Diego Padres signed free agent SS Jesus Merchan to a minor league contract. |
| Jan 10, 2013 | Signed as free agent | Jesus Guzman | — | Detroit Tigers | Detroit Tigers signed free agent LHP Jesus Guzman to a minor league contract. |
| Jan 9, 2013 | Trade | Jeanmar Gómez | Cleveland Guardians | Pittsburgh Pirates | Cleveland Indians traded RHP Jeanmar Gomez to Pittsburgh Pirates for LF Quincy Latimore. |
| Jan 9, 2013 | Signed as free agent | Manny Corpas | — | Colorado Rockies | Colorado Rockies signed free agent RHP Manny Corpas to a minor league contract and invited him to spring training. |
| Jan 9, 2013 | Signed as free agent | César Izturis | — | Cincinnati Reds | Cincinnati Reds signed free agent SS Cesar Izturis to a minor league contract and invited him to spring training. |
| Jan 9, 2013 | Signed as free agent | Brandon Mann | — | Washington Nationals | Washington Nationals signed free agent LHP Brandon Mann to a minor league contract and invited him to spring training. |
| Jan 9, 2013 | Signed as free agent | Steven Evans | — | Chicago White Sox | Chicago White Sox signed free agent LHP Steven Evans to a minor league contract. |
| Jan 9, 2013 | Signed as free agent | Juan Sandoval | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP Juan Sandoval to a minor league contract and invited him to spring training. |
| Jan 9, 2013 | Signed as free agent | Clint Everts | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Clint Everts to a minor league contract. |
| Jan 9, 2013 | Signed as free agent | Nate Samson | — | Cincinnati Reds | Cincinnati Reds signed free agent 3B Nate Samson to a minor league contract. |
| Jan 9, 2013 | Signed as free agent | Jake Kuebler | — | New York Mets | New York Mets signed free agent 1B Jake Kuebler to a minor league contract. |
| Jan 8, 2013 | Signed as free agent | Scott Kazmir | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Scott Kazmir to a minor league contract and invited him to spring training. |
| Jan 8, 2013 | Signed as free agent | Jerry Gil | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Jerry Gil to a minor league contract and invited him to spring training. |
| Jan 8, 2013 | Signed as free agent | Edward Paredes | — | Cleveland Guardians | Cleveland Indians signed free agent LHP Edward Paredes to a minor league contract and invited him to spring training. |
| Jan 8, 2013 | Signed as free agent | Adam LaRoche | — | Washington Nationals | Washington Nationals signed free agent 1B Adam LaRoche. |
| Jan 8, 2013 | Signed as free agent | Matt Diaz | — | New York Yankees | New York Yankees signed free agent LF Matt Diaz to a minor league contract and invited him to spring training. |
| Jan 8, 2013 | Signed as free agent | Stu Pomeranz | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Stu Pomeranz to a minor league contract. |
| Jan 8, 2013 | Signed as free agent | Michael Wuertz | — | Miami Marlins | Miami Marlins signed free agent RHP Michael Wuertz to a minor league contract and invited him to spring training. |
| Jan 8, 2013 | Signed | Jason Coats | — | Chicago White Sox | Chicago White Sox signed LF Jason Coats. |
| Jan 7, 2013 | Signed as free agent | Michael Gonzalez | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LHP Michael Gonzalez. |
| Jan 7, 2013 | Signed as free agent | Lance Berkman | — | Texas Rangers | Texas Rangers signed free agent DH Lance Berkman. |
| Jan 7, 2013 | Signed as free agent | J.P. Howell | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent LHP J.P. Howell. |
| Jan 7, 2013 | Signed as free agent | J.D. Martin | — | Tampa Bay Rays | Tampa Bay Rays signed free agent RHP J.D. Martin to a minor league contract and invited him to spring training. |
| Jan 7, 2013 | Signed as free agent | Kyle Mertins | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Kyle Mertins to a minor league contract. |
| Jan 7, 2013 | Signed as free agent | Mike Recchia | — | Baltimore Orioles | Baltimore Orioles signed free agent RHP Mike Recchia to a minor league contract. |
| Jan 7, 2013 | Signed as free agent | David Quinowski | — | Baltimore Orioles | Baltimore Orioles signed free agent LHP David Quinowski to a minor league contract. |
| Jan 7, 2013 | Signed as free agent | Felipe Burin | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 3B Felipe Burin to a minor league contract. |
| Jan 7, 2013 | Signed as free agent | Craig Tatum | — | Miami Marlins | Miami Marlins signed free agent C Craig Tatum to a minor league contract and invited him to spring training. |
| Jan 7, 2013 | Signed as free agent | Ross Ohlendorf | — | Washington Nationals | Washington Nationals signed free agent RHP Ross Ohlendorf to a minor league contract and invited him to spring training. |
| Jan 7, 2013 | Signed as free agent | Tony Pena Jr. | — | Chicago White Sox | Chicago White Sox signed free agent RHP Tony Pena Jr. to a minor league contract. |
| Jan 7, 2013 | Signed as free agent | Daniel McGrath | — | Boston Red Sox | Boston Red Sox signed free agent LHP Daniel McGrath to a minor league contract. |
| Jan 5, 2013 | Signed as free agent | Alfredo Amezaga | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 2B Alfredo Amezaga to a minor league contract and invited him to spring training. |
| Jan 5, 2013 | Signed as free agent | Mike Hernandez | — | Detroit Tigers | Detroit Tigers signed free agent LF Mike Hernandez to a minor league contract. |
| Jan 5, 2013 | Signed as free agent | Chase Weems | — | Baltimore Orioles | Baltimore Orioles signed free agent C Chase Weems to a minor league contract. |
| Jan 5, 2013 | Signed as free agent | Harold Garcia | — | Minnesota Twins | Minnesota Twins signed free agent 2B Harold Garcia to a minor league contract. |
| Jan 4, 2013 | Signed as free agent | Brett Myers | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Brett Myers. |
| Jan 4, 2013 | Signed as free agent | Mark Hamilton | — | Boston Red Sox | Boston Red Sox signed free agent 1B Mark Hamilton to a minor league contract and invited him to spring training. |
| Jan 4, 2013 | Released | Rick Van Den Hurk | — | Pittsburgh Pirates | Pittsburgh Pirates released RHP Rick van den Hurk. |
| Jan 4, 2013 | Signed as free agent | Jakub Izold | — | Cincinnati Reds | Cincinnati Reds signed free agent LHP Jakub Izold to a minor league contract. |
| Jan 4, 2013 | Signed as free agent | Ray Chang | — | Cincinnati Reds | Cincinnati Reds signed free agent 3B Ray Chang to a minor league contract. |
| Jan 4, 2013 | Signed as free agent | Jason Jaramillo | — | Houston Astros | Houston Astros signed free agent C Jason Jaramillo to a minor league contract and invited him to spring training. |
| Jan 4, 2013 | Signed as free agent | Daniel Carela | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent RHP Daniel Carela to a minor league contract. |
| Jan 4, 2013 | Signed as free agent | Omar Quintanilla | — | New York Mets | New York Mets signed free agent SS Omar Quintanilla to a minor league contract and invited him to spring training. |
| Jan 4, 2013 | Signed as free agent | Mike Benacka | — | Toronto Blue Jays | Toronto Blue Jays signed free agent Mike Benacka. |
| Jan 4, 2013 | Signed as free agent | Scott Copeland | — | Toronto Blue Jays | Toronto Blue Jays signed free agent RHP Scott Copeland to a minor league contract. |
| Jan 4, 2013 | Signed as free agent | Sean West | — | Washington Nationals | Washington Nationals signed free agent LHP Sean West to a minor league contract. |
| Jan 4, 2013 | Signed as free agent | Joe Witkowski | — | Washington Nationals | Washington Nationals signed free agent C Joe Witkowski to a minor league contract. |
| Jan 3, 2013 | Signed as free agent | Jason Frasor | — | Texas Rangers | Texas Rangers signed free agent RHP Jason Frasor. |
| Jan 3, 2013 | Signed as free agent | Nick Swisher | — | Cleveland Guardians | Cleveland Indians signed free agent 1B Nick Swisher. |
| Jan 3, 2013 | Signed as free agent | Blaine Boyer | — | Kansas City Royals | Kansas City Royals signed free agent RHP Blaine Boyer to a minor league contract and invited him to spring training. |
| Jan 3, 2013 | Signed as free agent | Dontrelle Willis | — | Chicago Cubs | Chicago Cubs signed free agent LHP Dontrelle Willis to a minor league contract. |
| Jan 3, 2013 | Signed as free agent | Cole Garner | — | Milwaukee Brewers | Milwaukee Brewers signed free agent LF Cole Garner to a minor league contract. |
| Jan 3, 2013 | Signed as free agent | Cody Ransom | — | San Diego Padres | San Diego Padres signed free agent 3B Cody Ransom to a minor league contract and invited him to spring training. |
| Jan 3, 2013 | Signed as free agent | Ramon Castro | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent C Ramon Castro to a minor league contract and invited him to spring training. |
| Jan 3, 2013 | Signed as free agent | Brian Barden | — | Los Angeles Dodgers | Los Angeles Dodgers signed free agent 3B Brian Barden to a minor league contract and invited him to spring training. |
| Jan 3, 2013 | Signed as free agent | Michael Dubee | — | Detroit Tigers | Detroit Tigers signed free agent RHP Michael Dubee to a minor league contract. |
| Jan 3, 2013 | Signed as free agent | J.R. Towles | — | St. Louis Cardinals | St. Louis Cardinals signed free agent C J.R. Towles to a minor league contract and invited him to spring training. |
| Jan 3, 2013 | Signed as free agent | Adrian Acosta | — | Philadelphia Phillies | Philadelphia Phillies signed free agent C Adrian Acosta to a minor league contract. |
| Jan 3, 2013 | Signed as free agent | Robinson Medrano | — | San Francisco Giants | San Francisco Giants signed free agent RF Robinson Medrano to a minor league contract. |
| Jan 3, 2013 | Signed as free agent | Luis Araujo | — | Cleveland Guardians | Cleveland Indians signed free agent RHP Luis Araujo to a minor league contract. |
| Jan 2, 2013 | Signed as free agent | Andrew Brown | — | New York Mets | New York Mets signed free agent RF Andrew Brown to a minor league contract and invited him to spring training. |
| Jan 2, 2013 | Signed as free agent | Edwin Jackson | — | Chicago Cubs | Chicago Cubs signed free agent RHP Edwin Jackson. |
| Jan 2, 2013 | Signed as free agent | Hisanori Takahashi | — | Chicago Cubs | Chicago Cubs signed free agent LHP Hisanori Takahashi to a minor league contract and invited him to spring training. |
| Jan 2, 2013 | Signed as free agent | Scott Proctor | — | San Francisco Giants | San Francisco Giants signed free agent Scott Proctor. |
| Jan 2, 2013 | Signed as free agent | Mason Tobin | — | San Francisco Giants | San Francisco Giants signed free agent RHP Mason Tobin to a minor league contract and invited him to spring training. |
| Jan 2, 2013 | Signed as free agent | Damaso Gonzalez | — | Philadelphia Phillies | Philadelphia Phillies signed free agent SS Damaso Gonzalez to a minor league contract. |
| Jan 1, 2013 | Signed as free agent | Randy Ruiz | — | Chicago White Sox | Chicago White Sox signed free agent 1B Randy Ruiz to a minor league contract. |
| Jan 1, 2013 | Signed as free agent | Lucas May | — | Pittsburgh Pirates | Pittsburgh Pirates signed free agent C Lucas May to a minor league contract and invited him to spring training. |
| Jan 1, 2013 | Signed as free agent | Danny Dorn | — | Detroit Tigers | Detroit Tigers signed free agent 1B Danny Dorn 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.