Tacoma Rainiers Roster & Staff
SEA Transactions
| Date | Transaction |
| 03/19/23 | Seattle Mariners optioned LHP Tayler Saucedo to Tacoma Rainiers. |
| 03/18/23 | Seattle Mariners signed free agent CF Delino DeShields to a minor league contract. |
| 03/17/23 | Tacoma Rainiers released 3B Drew Ellis. |
| 03/15/23 | SS Johnny Adams assigned to Everett AquaSox. |
| 03/15/23 | Seattle Mariners signed free agent SS Johnny Adams to a minor league contract. |
| 03/14/23 | ACL Mariners released RHP Adam Hill. |
| 03/14/23 | Seattle Mariners optioned RHP Prelander Berroa to Arkansas Travelers. |
| 03/14/23 | Modesto Nuts released C Jamie Johnson. |
| 03/14/23 | Seattle Mariners optioned 1B Evan White to Tacoma Rainiers. |
| 03/13/23 | Seattle Mariners optioned LHP Brennan Bernardino to Tacoma Rainiers. |
| 03/12/23 | Seattle Mariners optioned RHP Juan Then to Arkansas Travelers. |
| 03/12/23 | Seattle Mariners optioned RHP Easton McGee to Tacoma Rainiers. |
| 03/11/23 | Seattle Mariners optioned LF Cade Marlowe to Tacoma Rainiers. |
| 03/10/23 | Seattle Mariners optioned RHP Isaiah Campbell to Arkansas Travelers. |
| 03/06/23 | RHP Ashton Izzi assigned to ACL Mariners from Mariners Organization. |
| 03/06/23 | RHP Walter Ford assigned to ACL Mariners from Mariners Organization. |