Tacoma Rainiers Roster & Staff
SEA Transactions
| Date | Transaction |
| 03/23/25 | CF George Feliz assigned to Modesto Nuts from ACL Mariners. |
| 03/23/25 | LHP Matt Cronin assigned to Arkansas Travelers from Tacoma Rainiers. |
| 03/23/25 | RHP Yorlin Calderon assigned to Arkansas Travelers from Tacoma Rainiers. |
| 03/23/25 | RHP Juan Burgos assigned to Arkansas Travelers from Everett AquaSox. |
| 03/23/25 | RHP Taylor Floyd assigned to Arkansas Travelers from Tacoma Rainiers. |
| 03/23/25 | RHP Juan Burgos assigned to Arkansas Travelers from Everett AquaSox. |
| 03/23/25 | Everett AquaSox placed RHP Anthony Tomczak on the full-season injured list. |
| 03/23/25 | RHP Juan Burgos assigned to Arkansas Travelers from Everett AquaSox. |
| 03/23/25 | Tacoma Rainiers released RHP Jesse Hahn. |
| 03/23/25 | Tacoma Rainiers activated C Blake Hunt. |
| 03/23/25 | Tacoma Rainiers released LHP Drew Pomeranz. |
| 03/23/25 | Seattle Mariners optioned C Blake Hunt to Tacoma Rainiers. |
| 03/23/25 | Seattle Mariners optioned SS Leo Rivas to Tacoma Rainiers. |
| 03/23/25 | Seattle Mariners optioned RHP Casey Legumina to Tacoma Rainiers. |
| 03/23/25 | RHP Yorlin Calderon assigned to Arkansas Travelers from Tacoma Rainiers. |
| 03/23/25 | RHP Taylor Floyd assigned to Arkansas Travelers from Tacoma Rainiers. |
| 03/23/25 | LHP Matt Cronin assigned to Arkansas Travelers from Tacoma Rainiers. |
| 03/22/25 | RHP Michael Hobbs assigned to Arkansas Travelers. |
| 03/22/25 | Arkansas Travelers activated RHP Michael Hobbs. |
| 03/22/25 | Tacoma Rainiers placed LF Cade Marlowe on the 60-day injured list. |
| 03/22/25 | Seattle Mariners optioned RF Dominic Canzone to Tacoma Rainiers. |
| 03/22/25 | Seattle Mariners optioned 1B Austin Shenton to Tacoma Rainiers. |
| 03/21/25 | LHP Calvin Schapira assigned to ACL Mariners. |
| 03/21/25 | ACL Mariners placed RHP Eduardo Uscanga on the 60-day injured list. |
| 03/21/25 | Seattle Mariners signed free agent LHP Calvin Schapira to a minor league contract. |
| 03/20/25 | Arkansas Travelers released RHP Reid Morgan. |
| 03/20/25 | Arkansas Travelers released RHP Kyle Hill. |
| 03/20/25 | Inland Empire 66ers released 3B Cristian Garcia. |
| 03/20/25 | Inland Empire 66ers released LHP Luis Viloria. |
| 03/18/25 | ACL Mariners placed RHP Cole Phillips on the 60-day injured list. |
| 03/18/25 | RHP Thomas Higgins Jr. assigned to ACL Mariners. |
| 03/18/25 | ACL Mariners placed RHP Juan Jimenez on the 60-day injured list. |
| 03/18/25 | Arkansas Travelers placed RHP Adam Leverett on the full-season injured list. |
| 03/18/25 | RHP Adam Leverett assigned to Arkansas Travelers from Tacoma Rainiers. |
| 03/18/25 | Everett AquaSox placed LHP Brandon Schaeffer on the 60-day injured list. |
| 03/18/25 | Tacoma Rainiers placed RHP Leon Hunter Jr. on the 60-day injured list. |
| 03/18/25 | RHP Adam Leverett assigned to Arkansas Travelers from Tacoma Rainiers. |
| 03/15/25 | Seattle Mariners optioned 1B Tyler Locklear to Tacoma Rainiers. |
| 03/14/25 | OF Ryan Picollo assigned to ACL Mariners. |
| 03/14/25 | ACL Mariners released LHP Drake Batcho. |
| 03/14/25 | Everett AquaSox released C Ty Duvall. |
| 03/14/25 | Everett AquaSox released RHP Chris Jefferson. |
| 03/14/25 | Seattle Mariners optioned RHP Will Klein to Tacoma Rainiers. |
| 03/13/25 | OF Elias Perez assigned to DSL Mariners. |
| 03/11/25 | RHP Darwin Ramos assigned to DSL Mariners. |
| 03/11/25 | RHP Riley Bauman retired. |
| 03/10/25 | Seattle Mariners optioned RHP Cody Bolton to Tacoma Rainiers. |
| 03/07/25 | Seattle Mariners optioned RHP Hagen Danner to Tacoma Rainiers. |
| 03/07/25 | Seattle Mariners optioned RHP Blas Castano to Tacoma Rainiers. |
| 03/06/25 | RHP Maximo Rodriguez assigned to DSL Mariners. |