Inland Empire 66ers Roster & Staff
SEA Transactions
| Date | Transaction |
| 04/17/25 | Tacoma Rainiers placed RF Dominic Canzone on the 7-day injured list. |
| 04/17/25 | RHP Casey Lawrence assigned to Tacoma Rainiers. |
| 04/17/25 | Tacoma Rainiers activated RHP Will Klein. |
| 04/17/25 | Tacoma Rainiers activated OF Colin Davis. |
| 04/17/25 | Seattle Mariners optioned RHP Will Klein to Tacoma Rainiers. |
| 04/17/25 | Seattle Mariners recalled RHP Emerson Hancock from Tacoma Rainiers. |
| 04/17/25 | Seattle Mariners signed free agent RHP Casey Lawrence to a minor league contract. |
| 04/16/25 | Tacoma Rainiers placed RHP Gregory Santos on the temporarily inactive list. |
| 04/16/25 | Seattle Mariners optioned RHP Gregory Santos to Tacoma Rainiers. |
| 04/16/25 | Seattle Mariners recalled RHP Will Klein from Tacoma Rainiers. |
| 04/16/25 | Seattle Mariners signed free agent RHP Zach Pop to a minor league contract. |
| 04/15/25 | Arkansas Travelers activated LHP Peyton Alford from the 7-day injured list. |
| 04/15/25 | DSL Mariners activated RHP Kevin Pino from the restricted list. |
| 04/15/25 | RHP Osvaldo Platas assigned to DSL Mariners. |
| 04/15/25 | Inland Empire 66ers activated C Colin Summerhill from the 7-day injured list. |
| 04/15/25 | 1B Matt Coutney assigned to Tri-City Dust Devils from Inland Empire 66ers. |
| 04/15/25 | RHP Jesse Hahn assigned to Tacoma Rainiers. |
| 04/15/25 | Tacoma Rainiers transferred OF Colin Davis to the Development List. |
| 04/15/25 | Seattle Mariners signed free agent RHP Jesse Hahn to a minor league contract. |
| 04/14/25 | RHP Kevin Pino assigned to DSL Mariners from DSL Mariners. |
| 04/14/25 | Seattle Mariners signed free agent LHP Justin Sanchez to a minor league contract. |
| 04/13/25 | RHP Jesse Hahn elected free agency. |
| 04/13/25 | Seattle Mariners sent RHP Matt Brash on a rehab assignment to Tacoma Rainiers. |
| 04/13/25 | Seattle Mariners optioned RF Dominic Canzone to Tacoma Rainiers. |
| 04/13/25 | Seattle Mariners selected the contract of 3B Ben Williamson from Tacoma Rainiers. |
| 04/12/25 | Seattle Mariners sent RHP Jesse Hahn outright to Tacoma Rainiers. |
| 04/11/25 | Arkansas Travelers placed C Connor Charping on the 7-day injured list. |
| 04/11/25 | IF Diego Contreras assigned to DSL Mariners. |
| 04/11/25 | RHP Michael Mariot assigned to Tacoma Rainiers. |
| 04/11/25 | Seattle Mariners recalled RHP Casey Legumina from Tacoma Rainiers. |
| 04/11/25 | Seattle Mariners signed free agent RHP Osvaldo Platas to a minor league contract. |
| 04/11/25 | Seattle Mariners signed free agent IF Diego Contreras to a minor league contract. |
| 04/11/25 | Seattle Mariners signed free agent RHP Kevin Pino to a minor league contract. |
| 04/11/25 | Seattle Mariners signed free agent RHP Michael Mariot to a minor league contract. |
| 04/10/25 | RHP Steven Sanchez assigned to Modesto Nuts from ACL Mariners. |
| 04/10/25 | OF Colin Davis assigned to Tacoma Rainiers from ACL Mariners. |
| 04/10/25 | Seattle Mariners optioned RHP Luis F. Castillo to Tacoma Rainiers. |
| 04/10/25 | OF Colin Davis assigned to Tacoma Rainiers from ACL Mariners. |
| 04/09/25 | Tacoma Rainiers activated C Jacob Nottingham. |
| 04/09/25 | Seattle Mariners recalled SS Leo Rivas from Tacoma Rainiers. |
| 04/09/25 | Seattle Mariners selected the contract of RHP Casey Lawrence from Tacoma Rainiers. |
| 04/08/25 | RHP Jose Zerpa assigned to Everett AquaSox from ACL Mariners. |
| 04/08/25 | RHP Jose Zerpa assigned to Everett AquaSox from ACL Mariners. |
| 04/08/25 | RHP Kyle Roche assigned to Inland Empire 66ers from ACL Angels. |
| 04/07/25 | Seattle Mariners recalled RF Dominic Canzone from Tacoma Rainiers. |
| 04/07/25 | Seattle Mariners sent RHP Hagen Danner outright to Tacoma Rainiers. |
| 04/06/25 | RHP Gleiner Diaz assigned to Modesto Nuts from ACL Mariners. |
| 04/06/25 | Everett AquaSox placed RHP Brock Moore on the 7-day injured list. |
| 04/05/25 | Seattle Mariners optioned LHP Tayler Saucedo to Tacoma Rainiers. |
| 04/05/25 | Seattle Mariners selected the contract of RHP Jesse Hahn from Tacoma Rainiers. |