Red Sox Roster & Staff
Transactions
| Date | Transaction |
| 04/16/26 | SS Andruw Monasterio changed number to 32. |
| 04/16/26 | SS Isiah Kiner-Falefa changed number to 2. |
| 04/16/26 | RHP Zack Kelly changed number to 76. |
| 04/16/26 | 3B Marcelo Mayer changed number to 11. |
| 04/16/26 | LHP Connelly Early changed number to 71. |
| 04/16/26 | 3B Caleb Durbin changed number to 5. |
| 04/16/26 | RHP Ryan Watson changed number to 56. |
| 04/16/26 | RHP Garrett Whitlock changed number to 22. |
| 04/16/26 | LHP Jovani Morán changed number to 47. |
| 04/16/26 | CF Ceddanne Rafaela changed number to 3. |
| 04/16/26 | C Carlos Narváez changed number to 75. |
| 04/16/26 | LHP Ranger Suarez changed number to 55. |
| 04/16/26 | RHP Greg Weissert changed number to 57. |
| 04/16/26 | SS Trevor Story changed number to 10. |
| 04/16/26 | LHP Garrett Crochet changed number to 35. |
| 04/16/26 | LHP Danny Coulombe changed number to 67. |
| 04/16/26 | 1B Willson Contreras changed number to 40. |
| 04/16/26 | LHP Aroldis Chapman changed number to 44. |
| 04/16/26 | RHP Brayan Bello changed number to 66. |
| 04/16/26 | RF Roman Anthony changed number to 19. |
| 04/16/26 | RF Wilyer Abreu changed number to 52. |
| 04/16/26 | RHP Jack Anderson changed number to 77. |
| 04/16/26 | RHP Sonny Gray changed number to 54. |
| 04/16/26 | LF Jarren Duran changed number to 16. |
| 04/16/26 | LF Masataka Yoshida changed number to 7. |
| 04/16/26 | C Connor Wong changed number to 12. |
| 04/15/26 | RHP Jack Anderson changed number to 42. |
| 04/15/26 | 1B Willson Contreras changed number to 42. |
| 04/15/26 | RHP Brayan Bello changed number to 42. |
| 04/15/26 | RHP Sonny Gray changed number to 42. |
| 04/15/26 | LHP Ranger Suarez changed number to 42. |
| 04/15/26 | LHP Connelly Early changed number to 42. |
| 04/15/26 | LHP Danny Coulombe changed number to 42. |
| 04/15/26 | RHP Garrett Whitlock changed number to 42. |
| 04/15/26 | CF Ceddanne Rafaela changed number to 42. |
| 04/15/26 | C Carlos Narváez changed number to 42. |
| 04/15/26 | RHP Ryan Watson changed number to 42. |
| 04/15/26 | C Connor Wong changed number to 42. |
| 04/15/26 | SS Trevor Story changed number to 42. |
| 04/15/26 | LHP Garrett Crochet changed number to 42. |
| 04/15/26 | SS Andruw Monasterio changed number to 42. |
| 04/15/26 | LF Masataka Yoshida changed number to 42. |
| 04/15/26 | SS Isiah Kiner-Falefa changed number to 42. |
| 04/15/26 | RF Wilyer Abreu changed number to 42. |
| 04/15/26 | RHP Zack Kelly changed number to 42. |
| 04/15/26 | 3B Marcelo Mayer changed number to 42. |
| 04/15/26 | LF Jarren Duran changed number to 42. |
| 04/15/26 | RF Roman Anthony changed number to 42. |
| 04/15/26 | 3B Caleb Durbin changed number to 42. |
| 04/15/26 | RHP Greg Weissert changed number to 42. |
| 04/15/26 | LHP Aroldis Chapman changed number to 42. |
| 04/15/26 | LHP Jovani Morán changed number to 42. |
| 04/14/26 | Boston Red Sox transferred RHP Johan Oviedo from the 15-day injured list to the 60-day injured list. Right elbow strain. |
| 04/14/26 | Boston Red Sox selected the contract of RHP Jack Anderson from Worcester Red Sox. |
| 04/14/26 | Boston Red Sox optioned LHP Tyler Samaniego to Worcester Red Sox. |
| 04/11/26 | Boston Red Sox sent RHP Kutter Crawford on a rehab assignment to Worcester Red Sox. |
| 04/10/26 | Boston Red Sox activated 2B Anthony Seigler from the 10-day injured list. |
| 04/10/26 | Boston Red Sox optioned 2B Anthony Seigler to Worcester Red Sox. |
| 04/09/26 | Boston Red Sox sent 2B Anthony Seigler on a rehab assignment to Worcester Red Sox. |
| 04/08/26 | Boston Red Sox sent LHP Patrick Sandoval on a rehab assignment to Worcester Red Sox. |
| 04/08/26 | Boston Red Sox recalled LHP Tyler Samaniego from Worcester Red Sox. |
| 04/07/26 | Boston Red Sox signed free agent C Dilan Mata to a minor league contract. |
| 04/07/26 | Boston Red Sox signed free agent RHP Maikel Vargas to a minor league contract. |
| 04/06/26 | Boston Red Sox activated RHP Garrett Whitlock from the paternity list. |
| 04/06/26 | Boston Red Sox optioned RHP Tyler Uberstine to Worcester Red Sox. |
| 04/05/26 | Boston Red Sox traded RHP Patrick Galle to St. Louis Cardinals. |
| 04/04/26 | RHP Jedixson Paez returned to Boston Red Sox from Chicago White Sox. |
| 04/03/26 | Boston Red Sox placed RHP Johan Oviedo on the 15-day injured list retroactive to March 31, 2026. Right elbow strain. |
| 04/03/26 | Boston Red Sox placed RHP Garrett Whitlock on the paternity list. |
| 04/03/26 | Boston Red Sox recalled RHP Zack Kelly from Worcester Red Sox. |
| 04/03/26 | Boston Red Sox recalled RHP Tyler Uberstine from Worcester Red Sox. |