Tacoma Rainiers Roster & Staff
Tacoma Transactions
| Date | Transaction |
| 05/14/25 | Tacoma Rainiers activated RHP Michael Mariot. |
| 05/14/25 | Seattle Mariners recalled LHP Jhonathan Díaz from Tacoma Rainiers. |
| 05/13/25 | Tacoma Rainiers transferred OF Colin Davis to the Development List. |
| 05/13/25 | OF Tomo Otosaka assigned to Tacoma Rainiers. |
| 05/13/25 | Tacoma Rainiers transferred OF Colin Davis to the Development List. |
| 05/10/25 | Tacoma Rainiers activated RHP Jesse Hahn from the 7-day injured list. |
| 05/10/25 | RHP Casey Lawrence assigned to Tacoma Rainiers. |
| 05/10/25 | Tacoma Rainiers activated RHP Trevor Gott from the 7-day injured list. |
| 05/10/25 | Seattle Mariners sent RHP Jackson Kowar on a rehab assignment to Tacoma Rainiers. |
| 05/10/25 | Tacoma Rainiers transferred RHP Michael Mariot to the Development List. |
| 05/10/25 | Tacoma Rainiers transferred C Jacob Nottingham to the Development List. |
| 05/10/25 | SS Axel Sanchez assigned to Everett AquaSox from Tacoma Rainiers. |
| 05/09/25 | Seattle Mariners recalled RHP Troy Taylor from Tacoma Rainiers. |
| 05/07/25 | Tacoma Rainiers sent RHP Taylor Dollard on a rehab assignment to ACL Mariners. |
| 05/07/25 | SS Nik McClaughry assigned to ACL Mariners from Tacoma Rainiers. |
| 05/07/25 | Seattle Mariners optioned LF Rhylan Thomas to Tacoma Rainiers. |
| 05/07/25 | SS Axel Sanchez assigned to Tacoma Rainiers from Everett AquaSox. |
| 05/06/25 | Seattle Mariners optioned 2B Samad Taylor to Tacoma Rainiers. |
| 05/04/25 | Seattle Mariners sent RHP George Kirby on a rehab assignment to Tacoma Rainiers. |
| 05/03/25 | Tacoma Rainiers activated RHP Troy Taylor. |
| 05/03/25 | Tacoma Rainiers sent RHP Trevor Gott on a rehab assignment to ACL Mariners. |
| 05/03/25 | Seattle Mariners optioned RHP Troy Taylor to Tacoma Rainiers. |
| 05/02/25 | Tacoma Rainiers activated RHP Sauryn Lao. |
| 05/02/25 | Seattle Mariners sent RHP Sauryn Lao outright to Tacoma Rainiers. |