Tacoma Rainiers Roster & Staff
SEA Transactions
| Date | Transaction |
| 06/11/25 | Everett AquaSox transferred RHP Allan Saathoff to the Development List. |
| 06/11/25 | RHP Taylor Dollard assigned to Everett AquaSox from Tacoma Rainiers. |
| 06/11/25 | RHP Taylor Dollard assigned to Everett AquaSox from Tacoma Rainiers. |
| 06/10/25 | RHP Aiden Butler assigned to Modesto Nuts from ACL Mariners. |
| 06/10/25 | RHP Aiden Butler assigned to Modesto Nuts from ACL Mariners. |
| 06/10/25 | Tacoma Rainiers activated OF Colin Davis. |
| 06/10/25 | Tacoma Rainiers activated C Jacob Nottingham. |
| 06/10/25 | Tacoma Rainiers activated RHP Michael Mariot. |
| 06/10/25 | Tacoma Rainiers placed 2B Leo Rivas on the temporarily inactive list. |
| 06/10/25 | Seattle Mariners recalled RHP Logan Evans from Tacoma Rainiers. |
| 06/09/25 | Modesto Nuts placed RHP Matt Tiberia on the 7-day injured list. |
| 06/09/25 | RHP Casey Lawrence elected free agency. |
| 06/09/25 | Seattle Mariners recalled RF Dominic Canzone from Tacoma Rainiers. |
| 06/09/25 | Seattle Mariners sent RHP Casey Lawrence outright to Tacoma Rainiers. |
| 06/08/25 | Modesto Nuts activated C Jose Caguana from the 7-day injured list. |
| 06/08/25 | Modesto Nuts transferred 2B Starlin Aguilar to the Development List. |
| 06/07/25 | RHP Trevor Gott assigned to Tacoma Rainiers. |
| 06/07/25 | Seattle Mariners signed free agent RHP Trevor Gott to a minor league contract. |
| 06/04/25 | Everett AquaSox activated RHP Tyler Cleveland from the 7-day injured list. |
| 06/04/25 | Seattle Mariners recalled RHP Casey Legumina from Tacoma Rainiers. |
| 06/03/25 | 1B Dalton Davis assigned to ACL Mariners. |
| 06/03/25 | RHP Daniel Bard assigned to ACL Mariners. |
| 06/03/25 | RHP Nick Fraze assigned to Arkansas Travelers from Tacoma Rainiers. |
| 06/03/25 | RHP Leon Hunter Jr. assigned to Arkansas Travelers from Tacoma Rainiers. |
| 06/03/25 | Everett AquaSox placed OF Jonny Farmelo on the 7-day injured list retroactive to June 1, 2025. |
| 06/03/25 | Tacoma Rainiers transferred OF Colin Davis to the Development List. |
| 06/03/25 | Tacoma Rainiers transferred RHP Michael Mariot to the Development List. |
| 06/03/25 | RHP Jesse Hahn assigned to Tacoma Rainiers. |
| 06/03/25 | Tacoma Rainiers transferred C Jacob Nottingham to the Development List. |
| 06/03/25 | RHP Nick Fraze assigned to Arkansas Travelers from Tacoma Rainiers. |
| 06/03/25 | RHP Leon Hunter Jr. assigned to Arkansas Travelers from Tacoma Rainiers. |
| 06/03/25 | Seattle Mariners signed free agent RHP Jesse Hahn to a minor league contract. |
| 06/03/25 | Seattle Mariners signed free agent RHP Daniel Bard to a minor league contract. |
| 06/02/25 | Arkansas Travelers released RHP Garrett Hill. |
| 06/02/25 | Arkansas Travelers released RHP Yorlin Calderon. |
| 06/02/25 | Tacoma Rainiers activated LHP Joe Jacques. |
| 06/02/25 | Tacoma Rainiers released RHP Trevor Gott. |
| 06/02/25 | LHP Joe Jacques assigned to Tacoma Rainiers. |
| 06/01/25 | Tacoma Rainiers activated RHP Michael Mariot. |
| 06/01/25 | Tacoma Rainiers activated C Blake Hunt. |
| 06/01/25 | Seattle Mariners sent C Blake Hunt outright to Tacoma Rainiers. |