Inland Empire 66ers Roster & Staff
SEA Transactions
| Date | Transaction |
| 08/19/25 | Seattle Mariners optioned RHP Casey Legumina to Tacoma Rainiers. |
| 08/19/25 | Seattle Mariners optioned RHP Jackson Kowar to Tacoma Rainiers. |
| 08/19/25 | Seattle Mariners selected the contract of RHP Sauryn Lao from Tacoma Rainiers. |
| 08/19/25 | Seattle Mariners signed free agent RHP Michael Fulmer to a minor league contract. |
| 08/18/25 | RHP Lucas Kelly assigned to Everett AquaSox from ACL Mariners. |
| 08/18/25 | RHP Gleiner Diaz assigned to ACL Mariners from Modesto Nuts. |
| 08/18/25 | SS Nick Becker assigned to Modesto Nuts from ACL Mariners. |
| 08/18/25 | OF Korbyn Dickerson assigned to Modesto Nuts from ACL Mariners. |
| 08/18/25 | RHP Isaac Lyon assigned to Modesto Nuts from ACL Mariners. |
| 08/18/25 | RHP Lucas Kelly assigned to Everett AquaSox from ACL Mariners. |
| 08/18/25 | SS Felnin Celesten assigned to Everett AquaSox from Modesto Nuts. |
| 08/18/25 | Seattle Mariners optioned 3B Miles Mastrobuoni to Tacoma Rainiers. |
| 08/17/25 | Seattle Mariners recalled 3B Miles Mastrobuoni from Tacoma Rainiers. |
| 08/16/25 | 3B Jake Munroe assigned to Inland Empire 66ers from ACL Angels. |
| 08/15/25 | Arkansas Travelers activated 1B Hogan Windish. |
| 08/15/25 | Arkansas Travelers placed SS Brock Rodden on the 7-day injured list. |
| 08/15/25 | Everett AquaSox activated RHP Brock Moore from the 7-day injured list. |
| 08/15/25 | Everett AquaSox transferred RHP Allan Saathoff to the Development List. |
| 08/15/25 | Seattle Mariners recalled LHP Tayler Saucedo from Tacoma Rainiers. |
| 08/15/25 | Seattle Mariners optioned 3B Miles Mastrobuoni to Tacoma Rainiers. |
| 08/13/25 | Tacoma Rainiers activated RHP Domingo Gonzalez. |
| 08/13/25 | Tacoma Rainiers transferred C Jacob Nottingham to the Development List. |
| 08/12/25 | RHP Reese Lumpkin assigned to Modesto Nuts from ACL Mariners. |
| 08/12/25 | RHP Casey Hintz assigned to Modesto Nuts from ACL Mariners. |
| 08/12/25 | RHP Jose Romero assigned to ACL Mariners from Modesto Nuts. |
| 08/12/25 | C Luke Stevenson assigned to Modesto Nuts from ACL Mariners. |
| 08/12/25 | RHP Roberto Perez assigned to ACL Mariners from Modesto Nuts. |
| 08/12/25 | Inland Empire 66ers activated C Caleb Bartolero from the 60-day injured list. |
| 08/12/25 | LHP Alton Davis II assigned to Inland Empire 66ers. |
| 08/12/25 | LHP Leonard Garcia assigned to Inland Empire 66ers from Tri-City Dust Devils. |
| 08/12/25 | LHP Francis Texido assigned to Tri-City Dust Devils from Inland Empire 66ers. |
| 08/12/25 | RHP Najer Victor assigned to Inland Empire 66ers from Tri-City Dust Devils. |
| 08/12/25 | LHP Yokelvin Reyes assigned to Inland Empire 66ers from ACL Angels. |
| 08/12/25 | RHP Nixon Encarnacion assigned to ACL Angels from Inland Empire 66ers. |
| 08/12/25 | RHP Davidxon Lara assigned to ACL Angels from Inland Empire 66ers. |
| 08/12/25 | Seattle Mariners sent RF Victor Robles on a rehab assignment to Tacoma Rainiers. |
| 08/12/25 | Seattle Mariners sent RF Victor Robles on a rehab assignment to Tacoma Rainiers. |
| 08/12/25 | Seattle Mariners optioned RHP Domingo Gonzalez to Tacoma Rainiers. |
| 08/11/25 | Everett AquaSox placed RHP Elijah Dale on the 60-day injured list. |
| 08/11/25 | Everett AquaSox placed RHP Elijah Dale on the 7-day injured list. |
| 08/11/25 | Everett AquaSox placed RHP Elijah Dale on the 60-day injured list. |
| 08/10/25 | Everett AquaSox activated RHP Ryan Sloan. |
| 08/10/25 | RHP Ryan Sloan assigned to Everett AquaSox from Modesto Nuts. |
| 08/10/25 | Inland Empire 66ers placed SS Johan Macias on the 7-day injured list. |
| 08/09/25 | Arkansas Travelers placed C Connor Charping on the 7-day injured list. |
| 08/09/25 | C Freuddy Batista assigned to Arkansas Travelers from Everett AquaSox. |
| 08/09/25 | DSL Mariners activated RHP Angel Chicuate from the restricted list. |
| 08/09/25 | Everett AquaSox activated OF Jonny Farmelo from the 7-day injured list. |
| 08/09/25 | C Freuddy Batista assigned to Arkansas Travelers from Everett AquaSox. |
| 08/08/25 | LHP Kade Anderson assigned to ACL Mariners. |