Tacoma Rainiers Roster & Staff
Tacoma Transactions
| Date | Transaction |
| 09/09/26 | Tacoma Rainiers activated RHP Nick Hull from the 7-day injured list. |
| 09/09/26 | Tacoma Rainiers transferred C Jake Harvey to the Development List. |
| 09/08/26 | Tacoma Rainiers activated RF Connor Joe. |
| 09/08/26 | SS Martin Gonzalez assigned to ACL Mariners from Tacoma Rainiers. |
| 09/08/26 | Seattle Mariners optioned RHP Troy Taylor to Tacoma Rainiers. |
| 09/06/26 | Seattle Mariners optioned 3B Patrick Wisdom to Tacoma Rainiers. |
| 09/06/26 | C Jake Harvey assigned to Tacoma Rainiers from ACL Mariners. |
| 09/06/26 | Seattle Mariners selected the contract of SS Michael Arroyo from Tacoma Rainiers. |
| 09/06/26 | SS Martin Gonzalez assigned to Tacoma Rainiers from ACL Mariners. |
| 09/04/26 | Seattle Mariners recalled RHP Troy Taylor from Tacoma Rainiers. |
| 09/03/26 | Seattle Mariners sent RF Connor Joe outright to Tacoma Rainiers. |
| 09/03/26 | Seattle Mariners recalled CF Brennen Davis from Tacoma Rainiers. |
| 09/03/26 | Seattle Mariners selected the contract of CF Stuart Fairchild from Tacoma Rainiers. |
| 09/03/26 | Seattle Mariners sent RHP Nolan Kingham outright to Tacoma Rainiers. |
| 09/02/26 | RHP Simeon Woods Richardson assigned to Tacoma Rainiers. |
| 09/01/26 | Seattle Mariners selected the contract of RF Lazaro Montes from Tacoma Rainiers. |
| 09/01/26 | 2B Axel Sanchez assigned to Tacoma Rainiers from Everett AquaSox. |