Red Sox Roster & Staff
Transactions
| Date | Transaction |
| 09/13/26 | Boston Red Sox activated 1B Willson Contreras from the 10-day injured list. |
| 09/13/26 | Boston Red Sox placed 2B Anthony Seigler on the 10-day injured list. Right wrist inflammation. |
| 09/11/26 | Boston Red Sox sent 1B Willson Contreras on a rehab assignment to Portland Sea Dogs. |
| 09/11/26 | Boston Red Sox placed CF Eli White on the 10-day injured list retroactive to September 9, 2026. Right foot ligament injury. |
| 09/11/26 | Boston Red Sox recalled 2B Anthony Seigler from Worcester Red Sox. |
| 09/08/26 | Boston Red Sox sent RHP Tanner Houck on a rehab assignment to Portland Sea Dogs. |
| 09/06/26 | Boston Red Sox placed CF Ceddanne Rafaela on the 10-day injured list retroactive to September 3, 2026. Right quadriceps strain. |
| 09/06/26 | Boston Red Sox recalled OF Nate Eaton from Worcester Red Sox. |
| 09/03/26 | San Francisco Giants claimed 3B Brett Harris off waivers from Boston Red Sox. |
| 09/02/26 | Boston Red Sox optioned RHP Jedixson Paez to Worcester Red Sox. |
| 09/02/26 | Boston Red Sox recalled LHP Raymond Burgos from Worcester Red Sox. |
| 09/01/26 | Boston Red Sox designated 3B Brett Harris for assignment. |
| 09/01/26 | Boston Red Sox activated 2B Isiah Kiner-Falefa from the 60-day injured list. |
| 09/01/26 | Boston Red Sox activated RHP Jedixson Paez. |
| 09/01/26 | Boston Red Sox placed RHP Tyron Guerrero on the 15-day injured list. Right shoulder inflammation. |
| 09/01/26 | Boston Red Sox placed LHP Eduardo Rivera on the 60-day injured list. Lumbar strain. |
| 09/01/26 | Boston Red Sox recalled RHP Wyatt Olds from Worcester Red Sox. |
| 09/01/26 | Boston Red Sox selected the contract of RHP Jedixson Paez from Worcester Red Sox. |
| 09/01/26 | Boston Red Sox recalled LHP Eduardo Rivera from Worcester Red Sox. |