Red Sox Roster & Staff
Transactions
| Date | Transaction |
| 12/20/19 | Boston Red Sox signed free agent RHP R.J. Alvarez to a minor league contract and invited him to spring training. |
| 12/20/19 | Boston Red Sox signed free agent LHP Mike Kickham to a minor league contract and invited him to spring training. |
| 12/20/19 | Boston Red Sox invited non-roster 3B Jantzen Witte to spring training. |
| 12/20/19 | Boston Red Sox signed free agent LF Nick Longhi to a minor league contract and invited him to spring training. |
| 12/20/19 | Boston Red Sox signed free agent OF John Andreoli to a minor league contract and invited him to spring training. |
| 12/20/19 | Boston Red Sox signed free agent C Jett Bandy to a minor league contract and invited him to spring training. |
| 12/20/19 | Boston Red Sox invited non-roster RHP Domingo Tapia to spring training. |
| 12/20/19 | Boston Red Sox signed free agent RHP Robinson Leyer to a minor league contract and invited him to spring training. |
| 12/20/19 | Boston Red Sox claimed Chris Mazza off waivers from New York Mets. |
| 12/19/19 | Boston Red Sox signed free agent LHP Martin Perez. |
| 12/18/19 | Boston Red Sox signed free agent RHP Victor De Leon to a minor league contract. |
| 12/13/19 | Boston Red Sox signed free agent Jose Peraza. |
| 12/13/19 | Boston Red Sox signed free agent LHP Starlin Santos to a minor league contract. |
| 12/12/19 | Boston Red Sox claimed SS Jonathan Arauz off waivers from Corpus Christi Hooks. |
| 12/04/19 | Boston Red Sox signed free agent 2B Marco Hernandez. |
| 12/04/19 | Boston Red Sox signed free agent Josh Osich. |
| 12/02/19 | LHP Josh Osich elected free agency. |
| 12/02/19 | Philadelphia Phillies claimed RHP Trevor Kelley off waivers from Boston Red Sox. |
| 12/02/19 | 2B Marco Hernandez elected free agency. |
| 12/02/19 | Boston Red Sox traded C Sandy Leon to Cleveland Indians for RHP Adenys Bautista. |
| 12/02/19 | Boston Red Sox traded C Sandy Leon to Cleveland Indians for RHP Adenys Bautista. |