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Every official 2021 MLB transaction involving the Boston Red Sox on either side of the move: 117 trades, signings and releases dated and grouped by month, with MLB’s own description of each move. Both directions are covered: 111 moves land with the Red Sox and 6 depart from them.
Showing 117 of 117 Boston Red Sox transactions
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Dec 21, 2021 | Signed as free agent | Rob Refsnyder | — | Boston Red Sox | Boston Red Sox signed free agent 2B Rob Refsnyder to a minor league contract and invited him to spring training. |
| Dec 13, 2021 | Signed as free agent | Claudio Simon | — | Boston Red Sox | Boston Red Sox signed free agent 2B Claudio Simon to a minor league contract. |
| Dec 1, 2021 | Signed as free agent | Rich Hill | — | Boston Red Sox | Boston Red Sox signed free agent LHP Rich Hill. |
| Dec 1, 2021 | Signed as free agent | James Paxton | — | Boston Red Sox | Boston Red Sox signed free agent LHP James Paxton. |
| Dec 1, 2021 | Trade | David Hamilton | Milwaukee Brewers | Boston Red Sox | Milwaukee Brewers traded CF Jackie Bradley Jr., SS David Hamilton and 3B Alex Binelas to Boston Red Sox for RF Hunter Renfroe. |
| Dec 1, 2021 | Signed as free agent | Michael Feliz | — | Boston Red Sox | Boston Red Sox signed free agent RHP Michael Feliz to a minor league contract. |
| Dec 1, 2021 | Signed as free agent | Christin Stewart | — | Boston Red Sox | Boston Red Sox signed free agent LF Christin Stewart to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Nov 29, 2021 | Signed as free agent | Wandy Abreu | — | Boston Red Sox | Boston Red Sox signed free agent RHP Wandy Abreu to a minor league contract. |
| Nov 27, 2021 | Signed as free agent | Michael Wacha | — | Boston Red Sox | Boston Red Sox signed free agent RHP Michael Wacha. |
| Nov 18, 2021 | Signed as free agent | Jose Liriano | — | Boston Red Sox | Boston Red Sox signed free agent OF Jose Liriano to a minor league contract. |
| Nov 17, 2021 | Signed as free agent | Michael Gettys | — | Boston Red Sox | Boston Red Sox signed free agent CF Michael Gettys to a minor league contract. |
| Nov 12, 2021 | Signed as free agent | Cristian Nunez | — | Boston Red Sox | Boston Red Sox signed free agent RHP Cristian Nunez to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Oct 8, 2021 | Signed as free agent | Junior Delanda | — | Boston Red Sox | Boston Red Sox signed free agent RHP Junior Delanda to a minor league contract. |
| Oct 8, 2021 | Signed as free agent | Smil Guzman | — | Boston Red Sox | Boston Red Sox signed free agent RHP Smil Guzman to a minor league contract. |
| Oct 4, 2021 | Signed as free agent | Ali Ascanio | — | Boston Red Sox | Boston Red Sox signed free agent RHP Ali Ascanio to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Sep 6, 2021 | Signed as free agent | Jose Iglesias | — | Boston Red Sox | Boston Red Sox signed free agent SS Jose Iglesias. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Aug 31, 2021 | Trade | Delino DeShields | Boston Red Sox | Cincinnati Reds | Boston Red Sox traded CF Delino DeShields to Cincinnati Reds for cash. |
| Aug 31, 2021 | Signed as free agent | Jose Nova | — | Boston Red Sox | Boston Red Sox signed free agent RHP Jose Nova to a minor league contract. |
| Aug 30, 2021 | Trade | Brad Peacock | Cleveland Guardians | Boston Red Sox | Cleveland Indians traded RHP Brad Peacock to Boston Red Sox for cash. |
| Aug 28, 2021 | Signed as free agent | Michael Feliz | — | Boston Red Sox | Boston Red Sox signed free agent RHP Michael Feliz to a minor league contract. |
| Aug 19, 2021 | Released | Matt Andriese | — | Boston Red Sox | Boston Red Sox released RHP Matt Andriese. |
| Aug 16, 2021 | Released | Marwin Gonzalez | — | Boston Red Sox | Boston Red Sox released SS Marwin Gonzalez. |
| Aug 10, 2021 | Signed as free agent | Alex Claudio | — | Boston Red Sox | Boston Red Sox signed free agent LHP Alex Claudio to a minor league contract. |
| Aug 4, 2021 | Trade | Delino DeShields | Texas Rangers | Boston Red Sox | Texas Rangers traded CF Delino DeShields to Boston Red Sox for cash. |
| Aug 4, 2021 | Signed as free agent | José De León | — | Boston Red Sox | Boston Red Sox signed free agent RHP Jose De Leon to a minor league contract. |
| Aug 1, 2021 | Signed | Nathan Hickey | — | Boston Red Sox | Boston Red Sox signed C Nathan Hickey. |
| Aug 1, 2021 | Signed | Niko Kavadas | — | Boston Red Sox | Boston Red Sox signed 1B Niko Kavadas. |
| Aug 1, 2021 | Signed | Luis Guerrero | — | Boston Red Sox | Boston Red Sox signed RHP Luis Guerrero. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Jul 30, 2021 | Trade | Hansel Robles | Minnesota Twins | Boston Red Sox | Minnesota Twins traded RHP Hansel Robles to Boston Red Sox for RHP Alex Scherff. |
| Jul 30, 2021 | Trade | Michael Chavis | Boston Red Sox | Pittsburgh Pirates | Pittsburgh Pirates traded LHP Austin Davis to Boston Red Sox for 2B Michael Chavis. |
| Jul 29, 2021 | Trade | Aldo Ramirez | Boston Red Sox | Washington Nationals | Washington Nationals traded LF Kyle Schwarber to Boston Red Sox for RHP Aldo Ramirez. |
| Jul 28, 2021 | Signed as free agent | Anddy Flores | — | Boston Red Sox | Boston Red Sox signed free agent LHP Anddy Flores to a minor league contract. |
| Jul 26, 2021 | Signed as free agent | Yonfi Rodriguez | — | Boston Red Sox | Boston Red Sox signed free agent RHP Yonfi Rodriguez to a minor league contract. |
| Jul 24, 2021 | Signed | Elmer Rodríguez | — | Boston Red Sox | Boston Red Sox signed RHP Elmer Rodriguez-Cruz. |
| Jul 24, 2021 | Signed | Wyatt Olds | — | Boston Red Sox | Boston Red Sox signed RHP Wyatt Olds. |
| Jul 24, 2021 | Signed | Hunter Dobbins | — | Boston Red Sox | Boston Red Sox signed RHP Hunter Dobbins. |
| Jul 24, 2021 | Signed | Christopher Troye | — | Boston Red Sox | Boston Red Sox signed RHP Christopher Troye. |
| Jul 24, 2021 | Signed | Jacob Webb | — | Boston Red Sox | Boston Red Sox signed RHP Jacob Webb. |
| Jul 24, 2021 | Signed | Tyler Uberstine | — | Boston Red Sox | Boston Red Sox signed RHP Tyler Uberstine. |
| Jul 24, 2021 | Signed | Daniel McElveny | — | Boston Red Sox | Boston Red Sox signed SS Daniel McElveny. |
| Jul 24, 2021 | Signed | Tyler Miller | — | Boston Red Sox | Boston Red Sox signed 3B Tyler Miller. |
| Jul 24, 2021 | Signed | B.J. Vela | — | Boston Red Sox | Boston Red Sox signed 2B B.J. Vela. |
| Jul 24, 2021 | Signed | Phillip Sikes | — | Boston Red Sox | Boston Red Sox signed OF Phillip Sikes. |
| Jul 24, 2021 | Signed as free agent | Kier Meredith | — | Boston Red Sox | Boston Red Sox signed free agent OF Kier Meredith to a minor league contract. |
| Jul 24, 2021 | Signed as free agent | Jhonny Felix | — | Boston Red Sox | Boston Red Sox signed free agent RHP Jhonny Felix to a minor league contract. |
| Jul 24, 2021 | Signed as free agent | Ronny Ramirez | — | Boston Red Sox | Boston Red Sox signed free agent OF Ronny Ramirez to a minor league contract. |
| Jul 22, 2021 | Signed | Tyler McDonough | — | Boston Red Sox | Boston Red Sox signed 2B Tyler McDonough. |
| Jul 22, 2021 | Signed | Marcelo Mayer | — | Boston Red Sox | Boston Red Sox signed SS Marcelo Mayer. |
| Jul 17, 2021 | Trade | Victor Santos | Philadelphia Phillies | Boston Red Sox | Philadelphia Phillies traded RHP Victor Santos to Boston Red Sox. |
| Jul 15, 2021 | Signed | Matt Litwicki | — | Boston Red Sox | Boston Red Sox signed RHP Matt Litwicki. |
| Jul 7, 2021 | Signed as free agent | Eybersson Polanco | — | Boston Red Sox | Boston Red Sox signed free agent RHP Eybersson Polanco to a minor league contract. |
| Jul 2, 2021 | Signed as free agent | Andy Lugo | — | Boston Red Sox | Boston Red Sox signed free agent 3B Andy Lugo to a minor league contract. |
| Jul 2, 2021 | Signed as free agent | Daniel Nunez | — | Boston Red Sox | Boston Red Sox signed free agent LHP Bryant Nunez to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Jun 14, 2021 | Trade | Yacksel Ríos | Seattle Mariners | Boston Red Sox | Seattle Mariners traded RHP Yacksel Rios to Boston Red Sox for cash. |
| Jun 4, 2021 | Trade | Luis De La Rosa | Kansas City Royals | Boston Red Sox | Kansas City Royals traded RHP Grant Gambrell and RHP Luis De La Rosa to Boston Red Sox. |
| Jun 4, 2021 | Trade | Freddy Valdez | New York Mets | Boston Red Sox | New York Mets traded RF Freddy Valdez to Boston Red Sox. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| May 6, 2021 | Signed as free agent | Brandon Workman | — | Boston Red Sox | Boston Red Sox signed free agent RHP Brandon Workman to a minor league contract. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Apr 15, 2021 | Signed as free agent | Jesus Lopez | — | Boston Red Sox | Boston Red Sox signed free agent RHP Jesus Lopez to a minor league contract. |
| Apr 6, 2021 | Signed as free agent | Tyler Olson | — | Boston Red Sox | Boston Red Sox signed free agent P Tyler Olson. |
| Apr 3, 2021 | Signed as free agent | Héctor Rondón | — | Boston Red Sox | Boston Red Sox signed free agent P Hector Rondon. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Mar 19, 2021 | Signed as free agent | Daniel Santana | — | Boston Red Sox | Boston Red Sox signed free agent P Daniel Santana. |
| Mar 9, 2021 | Signed as free agent | Jogly Garcia | — | Boston Red Sox | Boston Red Sox signed free agent P Jogly Garcia. |
| Mar 7, 2021 | Signed as free agent | Danny Santana | — | Boston Red Sox | Boston Red Sox signed free agent SS Danny Santana. |
| Mar 7, 2021 | Signed as free agent | Danny Santana | — | Boston Red Sox | Boston Red Sox signed free agent SS Danny Santana. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Feb 27, 2021 | Trade | Zach Bryant | Chicago Cubs | Boston Red Sox | Chicago Cubs traded P Zach Bryant to Boston Red Sox. |
| Feb 24, 2021 | Signed as free agent | Marwin Gonzalez | — | Boston Red Sox | Boston Red Sox signed free agent 3B Marwin Gonzalez. |
| Feb 24, 2021 | Signed as free agent | Marwin Gonzalez | — | Boston Red Sox | Boston Red Sox signed free agent SS Marwin Gonzalez. |
| Feb 24, 2021 | Signed as free agent | Marwin Gonzalez | — | Boston Red Sox | Boston Red Sox signed free agent SS Marwin Gonzalez. |
| Feb 24, 2021 | Signed as free agent | Marwin Gonzalez | — | Boston Red Sox | Boston Red Sox signed free agent SS Marwin Gonzalez. |
| Feb 24, 2021 | Signed as free agent | Marwin Gonzalez | — | Boston Red Sox | Boston Red Sox signed free agent SS Marwin Gonzalez. |
| Feb 24, 2021 | Signed as free agent | Marwin Gonzalez | — | Boston Red Sox | Boston Red Sox signed free agent SS Marwin Gonzalez. |
| Feb 17, 2021 | Trade | Jeffrey Springs | Boston Red Sox | Tampa Bay Rays | Tampa Bay Rays traded C Ronaldo Hernandez and SS Nick Sogard to Boston Red Sox for Jeffrey Springs, Chris Mazza and cash. |
| Feb 16, 2021 | Signed as free agent | Hirokazu Sawamura | — | Boston Red Sox | Boston Red Sox signed free agent RHP Hirokazu Sawamura. |
| Feb 16, 2021 | Signed as free agent | Hirokazu Sawamura | — | Boston Red Sox | Boston Red Sox signed free agent RHP Hirokazu Sawamura. |
| Feb 16, 2021 | Signed as free agent | Hirokazu Sawamura | — | Boston Red Sox | Boston Red Sox signed free agent P Hirokazu Sawamura. |
| Feb 16, 2021 | Signed as free agent | Hirokazu Sawamura | — | Boston Red Sox | Boston Red Sox signed free agent P Hirokazu Sawamura. |
| Feb 16, 2021 | Signed as free agent | Hirokazu Sawamura | — | Boston Red Sox | Boston Red Sox signed free agent P Hirokazu Sawamura. |
| Feb 12, 2021 | Signed as free agent | Martín Pérez | — | Boston Red Sox | Boston Red Sox signed free agent LHP Martin Perez. |
| Feb 12, 2021 | Signed as free agent | Chris Herrmann | — | Boston Red Sox | Boston Red Sox signed free agent C Chris Herrmann to a minor league contract and invited him to spring training. |
| Feb 12, 2021 | Signed as free agent | Chris Herrmann | — | Boston Red Sox | Boston Red Sox signed free agent C Chris Herrmann. |
| Feb 12, 2021 | Signed as free agent | Martín Pérez | — | Boston Red Sox | Boston Red Sox signed free agent P Martin Perez. |
| Feb 12, 2021 | Signed as free agent | Martín Pérez | — | Boston Red Sox | Boston Red Sox signed free agent P Martin Perez. |
| Feb 10, 2021 | Trade | Andrew Benintendi | Boston Red Sox | Kansas City Royals | Boston Red Sox Traded cash and LF Andrew Benintendi to Kansas City Royals; Kansas City Royals Traded Player To Be Named Later, Player To Be Named Later and CF Franchy Cordero to Boston Red Sox; Kansas City Royals Traded CF Khalil Lee to New York Mets and New York Mets Traded Player To Be Named Later and Josh Winckowski to Boston Red Sox. |
| Feb 3, 2021 | Signed as free agent | Garrett Richards | — | Boston Red Sox | Boston Red Sox signed free agent RHP Garrett Richards. |
| Feb 3, 2021 | Signed as free agent | Garrett Richards | — | Boston Red Sox | Boston Red Sox signed free agent RHP Garrett Richards. |
| Feb 3, 2021 | Signed as free agent | Garrett Richards | — | Boston Red Sox | Boston Red Sox signed free agent P Garrett Richards. |
| Feb 3, 2021 | Signed as free agent | Garrett Richards | — | Boston Red Sox | Boston Red Sox signed free agent P Garrett Richards. |
| Feb 2, 2021 | Signed as free agent | Enrique Hernández | — | Boston Red Sox | Boston Red Sox signed free agent 2B Enrique Hernandez. |
| Feb 2, 2021 | Signed as free agent | Enrique Hernández | — | Boston Red Sox | Boston Red Sox signed free agent CF Enrique Hernandez. |
| Feb 2, 2021 | Signed as free agent | Enrique Hernández | — | Boston Red Sox | Boston Red Sox signed free agent CF Enrique Hernandez. |
| Date | Type | Player | From | To | Details |
|---|---|---|---|---|---|
| Jan 25, 2021 | Trade | Frank German | New York Yankees | Boston Red Sox | New York Yankees traded RHP Adam Ottavino and RHP Frank German to Boston Red Sox for Player To Be Named Later. |
| Jan 22, 2021 | Signed as free agent | Matt Carasiti | — | Boston Red Sox | Boston Red Sox signed free agent RHP Matt Carasiti to a minor league contract and invited him to spring training. |
| Jan 22, 2021 | Signed as free agent | Matt Carasiti | — | Boston Red Sox | Boston Red Sox signed free agent RHP Matt Carasiti to a minor league contract and invited him to spring training. |
| Jan 22, 2021 | Signed as free agent | Matt Carasiti | — | Boston Red Sox | Boston Red Sox signed free agent P Matt Carasiti. |
| Jan 19, 2021 | Signed as free agent | Jose Adames | — | Boston Red Sox | Boston Red Sox signed free agent RHP Jose Adames to a minor league contract. |
| Jan 18, 2021 | Trade | C.J. Chatham | Boston Red Sox | Philadelphia Phillies | Boston Red Sox traded SS C.J. Chatham to Philadelphia Phillies for Player To Be Named Later. |
| Jan 18, 2021 | Signed as free agent | Zac Grotz | — | Boston Red Sox | Boston Red Sox signed free agent RHP Zac Grotz to a minor league contract and invited him to spring training. |
| Jan 18, 2021 | Signed as free agent | Zac Grotz | — | Boston Red Sox | Boston Red Sox signed free agent RHP Zac Grotz to a minor league contract and invited him to spring training. |
| Jan 18, 2021 | Signed as free agent | Zac Grotz | — | Boston Red Sox | Boston Red Sox signed free agent P Zac Grotz. |
| Jan 16, 2021 | Signed as free agent | Jack López | — | Boston Red Sox | Boston Red Sox signed free agent 2B Jack Lopez to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Josue Castillo | — | Boston Red Sox | Boston Red Sox signed free agent SS Josue Castillo to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Miguel Bleis | — | Boston Red Sox | Boston Red Sox signed free agent OF Miguel Bleis to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Enderso Lira | — | Boston Red Sox | Boston Red Sox signed free agent C Enderso Lira to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Jedixson Paez | — | Boston Red Sox | Boston Red Sox signed free agent RHP Jedixson Paez to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Karim Ayubi | — | Boston Red Sox | Boston Red Sox signed free agent OF Karim Ayubi to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Luis Ravelo | — | Boston Red Sox | Boston Red Sox signed free agent SS Luis Ravelo to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Yizreel Burnet | — | Boston Red Sox | Boston Red Sox signed free agent RHP Yizreel Burnet to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Elvys Castro | — | Boston Red Sox | Boston Red Sox signed free agent OF Elvys Castro to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Armando Sierra | — | Boston Red Sox | Boston Red Sox signed free agent OF Armando Sierra to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Helison Mota | — | Boston Red Sox | Boston Red Sox signed free agent IF Helison Mota to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Ahbram Liendo | — | Boston Red Sox | Boston Red Sox signed free agent IF Ahbram Liendo to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Yevganni Reinita | — | Boston Red Sox | Boston Red Sox signed free agent IF Yevganni Reinita to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Jean Carlos Reyes | — | Boston Red Sox | Boston Red Sox signed free agent RHP Jean Carlos Reyes to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Alvaro Mejias | — | Boston Red Sox | Boston Red Sox signed free agent RHP Alvaro Mejias to a minor league contract. |
| Jan 15, 2021 | Signed as free agent | Angel Lopez | — | Boston Red Sox | Boston Red Sox signed free agent P Angel Lopez. |
| Jan 4, 2021 | Signed as free agent | Zack Kelly | — | Boston Red Sox | Boston Red Sox signed free agent RHP Zack Kelly to a minor league contract. |
| Jan 4, 2021 | Signed as free agent | Jeremy Rivera | — | Boston Red Sox | Boston Red Sox signed free agent SS Jeremy Rivera to a minor league contract. |
Every row is captured from MLB’s official StatsAPI transactions feed with MLB’s published description unedited. A trade appears on both clubs’ pages for the season; signings include both major-league and minor-league contracts signed with the 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. Kept transaction types: Trade, Signed, Signed as free agent, Released.