| 1/3/19 |
Boston Red Sox invited non-roster RHP Josh A. Smith to spring training. |
| 1/3/19 |
Boston Red Sox invited non-roster C Oscar Hernandez to spring training. |
| 1/10/19 |
Boston Red Sox invited non-roster RHP Mike Shawaryn to spring training. |
| 1/10/19 |
Boston Red Sox invited non-roster OF Cole Sturgeon to spring training. |
| 1/10/19 |
Boston Red Sox invited non-roster SS C.J. Chatham to spring training. |
| 1/10/19 |
Boston Red Sox invited non-roster OF Tate Matheny to spring training. |
| 1/10/19 |
Boston Red Sox invited non-roster C Austin Rei to spring training. |
| 1/10/19 |
Boston Red Sox invited non-roster OF Rusney Castillo to spring training. |
| 1/10/19 |
Boston Red Sox invited non-roster 1B Josh Ockimey to spring training. |
| 1/10/19 |
Boston Red Sox invited non-roster 3B Bobby Dalbec to spring training. |
| 1/10/19 |
Boston Red Sox invited non-roster 2B Chad De La Guerra to spring training. |
| 1/10/19 |
Boston Red Sox signed free agent OF Bryce Brentz to a minor league contract and invited him to spring training. |
| 1/10/19 |
Boston Red Sox signed free agent C Yorberto Mejicano to a minor league contract. |
| 1/30/19 |
Boston Red Sox signed free agent RHP Jenrry Mejia to a minor league contract. |