Red Sox Roster & Staff
Transactions
| Date | Transaction |
| 08/29/18 | Boston Red Sox signed free agent OF Jesus Marrero to a minor league contract. |
| 08/29/18 | Boston Red Sox sent 3B Rafael Devers on a rehab assignment to Pawtucket Red Sox. |
| 08/28/18 | Boston Red Sox sent C Christian Vazquez on a rehab assignment to Pawtucket Red Sox. |
| 08/28/18 | Boston Red Sox sent RHP Steven Wright on a rehab assignment to Pawtucket Red Sox. |
| 08/27/18 | Boston Red Sox sent C Christian Vazquez on a rehab assignment to Portland Sea Dogs. |
| 08/24/18 | Boston Red Sox sent RHP Austin Maddox on a rehab assignment to Pawtucket Red Sox. |
| 08/20/18 | Boston Red Sox sent LHP Eduardo Rodriguez on a rehab assignment to Portland Sea Dogs. |
| 08/18/18 | Boston Red Sox recalled RHP Brandon Workman from Pawtucket Red Sox. |
| 08/18/18 | Boston Red Sox placed LHP Chris Sale on the 10-day disabled list retroactive to August 15, 2018. Mild left shoulder inflammation. |
| 08/17/18 | Boston Red Sox activated 2B Ian Kinsler from the 10-day disabled list. |
| 08/17/18 | Boston Red Sox placed 3B Rafael Devers on the 10-day disabled list retroactive to August 16, 2018. Left hamstring strain. |
| 08/16/18 | Boston Red Sox sent RHP Austin Maddox on a rehab assignment to GCL Red Sox. |
| 08/15/18 | Boston Red Sox signed free agent LHP Alex Demchak to a minor league contract. |
| 08/15/18 | Boston Red Sox signed free agent RHP Frailyn Sanchez to a minor league contract. |
| 08/15/18 | Boston Red Sox sent C Dan Butler outright to Pawtucket Red Sox. |
| 08/14/18 | Boston Red Sox activated C Blake Swihart from the 10-day injured list. |
| 08/14/18 | Boston Red Sox designated C Dan Butler for assignment. |
| 08/12/18 | Boston Red Sox activated LHP Chris Sale from the 10-day disabled list. |
| 08/12/18 | Boston Red Sox sent C Blake Swihart on a rehab assignment to Lowell Spinners. |
| 08/12/18 | Boston Red Sox optioned RHP Brandon Workman to Pawtucket Red Sox. |
| 08/12/18 | RHP William Cuevas returned to Pawtucket Red Sox from Boston Red Sox. |
| 08/11/18 | Boston Red Sox recalled RHP William Cuevas from Pawtucket Red Sox. |
| 08/08/18 | Boston Red Sox activated 3B Rafael Devers from the 10-day disabled list. |
| 08/08/18 | Boston Red Sox optioned 2B Tony Renda to Pawtucket Red Sox. |
| 08/07/18 | Boston Red Sox signed free agent RHP Faysel Gregorio to a minor league contract. |
| 08/06/18 | Boston Red Sox sent 3B Rafael Devers on a rehab assignment to Lowell Spinners. |
| 08/04/18 | Boston Red Sox selected the contract of Tony Renda from Pawtucket Red Sox. |
| 08/04/18 | Boston Red Sox placed 2B Ian Kinsler on the 10-day disabled list. Left hamstring strain. |
| 08/04/18 | Boston Red Sox transferred 2B Dustin Pedroia from the 10-day disabled list to the 60-day disabled list. Left knee inflammation. |
| 08/03/18 | Boston Red Sox placed C Blake Swihart on the 10-day disabled list. Right hamstring strain. |
| 08/03/18 | Boston Red Sox selected the contract of C Dan Butler from Pawtucket Red Sox. |