Inland Empire 66ers Roster & Staff
SEA Transactions
| Date | Transaction |
| 03/11/26 | Seattle Mariners optioned RHP Domingo Gonzalez to Tacoma Rainiers. |
| 03/11/26 | Seattle Mariners optioned RHP Blas Castaño to Tacoma Rainiers. |
| 03/08/26 | Seattle Mariners optioned RHP Ryan Loutos to Tacoma Rainiers. |
| 03/01/26 | C Santiago Pereira assigned to DSL Mariners. |
| 03/01/26 | C Jacob Nottingham assigned to Tacoma Rainiers. |
| 03/01/26 | Seattle Mariners signed free agent C Jacob Nottingham to a minor league contract. |