Mariners Roster & Staff
Transactions
| Date | Transaction |
| 07/30/24 | Seattle Mariners activated 3B Justin Turner. |
| 07/30/24 | Seattle Mariners activated LF Cade Marlowe. |
| 07/30/24 | Seattle Mariners recalled LHP Jhonathan Diaz from Tacoma Rainiers. |
| 07/30/24 | Seattle Mariners sent RHP Chris Devenski outright to Tacoma Rainiers. |
| 07/30/24 | Seattle Mariners optioned LHP Gabe Speier to Tacoma Rainiers. |
| 07/30/24 | Seattle Mariners optioned 3B Tyler Locklear to Tacoma Rainiers. |
| 07/30/24 | Miami Marlins traded RHP JT Chargois to Seattle Mariners for RHP Will Schomberg. |
| 07/30/24 | Miami Marlins traded RHP JT Chargois to Seattle Mariners for RHP Will Schomberg. |
| 07/29/24 | Seattle Mariners signed RHP Aiden Butler. |
| 07/29/24 | Toronto Blue Jays traded 3B Justin Turner and cash to Seattle Mariners for OF RJ Schreck. |
| 07/29/24 | Toronto Blue Jays traded 3B Justin Turner and cash to Seattle Mariners for OF RJ Schreck. |
| 07/29/24 | Seattle Mariners traded 3B Ty France and cash to Cincinnati Reds for C Andruw Salcedo. |
| 07/29/24 | Seattle Mariners traded 3B Ty France and cash to Cincinnati Reds for C Andruw Salcedo. |
| 07/27/24 | Seattle Mariners activated CF Randy Arozarena. |
| 07/27/24 | Seattle Mariners activated RHP Yimi García. |
| 07/26/24 | Seattle Mariners signed OF Ryan Picollo. |
| 07/26/24 | Tampa Bay Rays traded CF Randy Arozarena to Seattle Mariners for RHP Brody Hopkins, OF Aidan Smith and Player To Be Named Later. |
| 07/26/24 | Tampa Bay Rays traded CF Randy Arozarena to Seattle Mariners for RHP Brody Hopkins, OF Aidan Smith and Player To Be Named Later. |
| 07/26/24 | Toronto Blue Jays traded RHP Yimi García to Seattle Mariners for OF Jonatan Clase and C Jacob Sharp. |
| 07/26/24 | Seattle Mariners traded RHP Ryne Stanek to New York Mets for OF Rhylan Thomas. |
| 07/26/24 | Toronto Blue Jays traded RHP Yimi García to Seattle Mariners for OF Jonatan Clase and C Jacob Sharp. |
| 07/26/24 | Tampa Bay Rays traded CF Randy Arozarena to Seattle Mariners for RHP Brody Hopkins, OF Aidan Smith and Player To Be Named Later. |
| 07/26/24 | Seattle Mariners traded RHP Ryne Stanek to New York Mets for OF Rhylan Thomas. |
| 07/26/24 | Toronto Blue Jays traded RHP Yimi García to Seattle Mariners for OF Jonatan Clase and C Jacob Sharp. |
| 07/25/24 | RHP Brody Hopkins roster status changed by Seattle Mariners. |
| 07/24/24 | Seattle Mariners signed free agent SS Logan Warmoth to a minor league contract. |
| 07/24/24 | Seattle Mariners signed free agent RHP Thomas Higgins Jr. to a minor league contract. |
| 07/23/24 | Seattle Mariners signed RHP Matt Tiberia. |
| 07/23/24 | Seattle Mariners signed 3B Austin St. Laurent. |
| 07/23/24 | Seattle Mariners signed RHP Evan Truitt. |
| 07/23/24 | Seattle Mariners signed RHP Ryan Sloan. |
| 07/23/24 | Seattle Mariners signed SHP Jurrangelo Cijntje. |
| 07/23/24 | SS Alisson Del Orbe assigned to Seattle Mariners. |
| 07/23/24 | Seattle Mariners designated 3B Ty France for assignment. |
| 07/23/24 | Seattle Mariners placed OF Julio Rodríguez on the 10-day injured list. Right high ankle sprain. |
| 07/23/24 | Seattle Mariners signed RHP Hunter Cranton. |
| 07/23/24 | Seattle Mariners signed 3B Brandon Eike. |
| 07/23/24 | Seattle Mariners signed RHP Harrison Kreiling. |
| 07/23/24 | Seattle Mariners signed TWP Grant Knipp. |
| 07/23/24 | SS Alisson Del Orbe roster status changed by Seattle Mariners. |
| 07/23/24 | Seattle Mariners placed SS J.P. Crawford on the 10-day injured list. Rught hand fracture. |
| 07/23/24 | Seattle Mariners signed RHP Wyatt Lunsford-Shenkman. |
| 07/23/24 | Seattle Mariners signed RHP Charlie Beilenson. |
| 07/23/24 | Seattle Mariners recalled SS Leo Rivas from Tacoma Rainiers. |
| 07/23/24 | Seattle Mariners recalled OF Jonatan Clase from Tacoma Rainiers. |
| 07/23/24 | Seattle Mariners recalled 3B Tyler Locklear from Tacoma Rainiers. |
| 07/23/24 | Seattle Mariners recalled LF Cade Marlowe from Tacoma Rainiers. |
| 07/22/24 | Seattle Mariners signed RHP Christian Little. |
| 07/22/24 | Seattle Mariners signed free agent RHP Trevor Long to a minor league contract. |
| 07/22/24 | Seattle Mariners signed free agent SS Carter Dorighi to a minor league contract. |
| 07/22/24 | Seattle Mariners signed RHP Brock Moore. |
| 07/22/24 | Seattle Mariners signed RHP Gage Boehm. |
| 07/22/24 | Seattle Mariners signed RHP Will Riley. |
| 07/22/24 | Seattle Mariners selected the contract of 3B Jason Vosler from Tacoma Rainiers. |
| 07/22/24 | Seattle Mariners traded RHP Mike Baumann to San Francisco Giants. |
| 07/22/24 | Seattle Mariners optioned OF Jonatan Clase to Tacoma Rainiers. |
| 07/22/24 | Seattle Mariners optioned SS Ryan Bliss to Tacoma Rainiers. |
| 07/22/24 | Seattle Mariners optioned OF Jonatan Clase to Tacoma Rainiers. |
| 07/19/24 | Seattle Mariners designated RHP Mike Baumann for assignment. |
| 07/19/24 | Seattle Mariners activated LHP Gabe Speier from the 15-day injured list. |
| 07/19/24 | Seattle Mariners signed C Josh Caron. |
| 07/19/24 | Seattle Mariners signed OF Anthony Donofrio. |
| 07/19/24 | Seattle Mariners signed C Connor Dykstra. |
| 07/19/24 | Seattle Mariners signed 2B Dustin Crenshaw. |
| 07/15/24 | Seattle Mariners sent LHP Gabe Speier on a rehab assignment to ACL Mariners. |
| 07/15/24 | Seattle Mariners sent LHP Gabe Speier on a rehab assignment to ACL Mariners. |
| 07/13/24 | Seattle Mariners signed free agent LHP Fernando Silvera to a minor league contract. |
| 07/13/24 | Seattle Mariners signed free agent RHP Olivier Gomez to a minor league contract. |
| 07/12/24 | Seattle Mariners sent LHP Gabe Speier on a rehab assignment to Tacoma Rainiers. |
| 07/12/24 | Seattle Mariners signed free agent OF Yunior Garcia to a minor league contract. |
| 07/12/24 | Seattle Mariners signed free agent 2B Kobe Kato to a minor league contract. |
| 07/12/24 | Seattle Mariners activated RHP Bryan Woo from the 15-day injured list. |
| 07/12/24 | Seattle Mariners optioned RHP Eduard Bazardo to Tacoma Rainiers. |
| 07/10/24 | Seattle Mariners placed RF Dominic Canzone on the 10-day injured list. Right adductor strain. |
| 07/10/24 | Seattle Mariners recalled OF Jonatan Clase from Tacoma Rainiers. |
| 07/09/24 | Seattle Mariners signed free agent RHP Chia-Shi Shen to a minor league contract. |
| 07/08/24 | Seattle Mariners activated RHP Gregory Santos from the 60-day injured list. |
| 07/08/24 | Seattle Mariners optioned RHP Emerson Hancock to Tacoma Rainiers. |
| 07/08/24 | Seattle Mariners sent C Seby Zavala outright to Tacoma Rainiers. |
| 07/06/24 | Seattle Mariners sent RHP Bryan Woo on a rehab assignment to Everett AquaSox. |
| 07/06/24 | Seattle Mariners sent RHP Gregory Santos on a rehab assignment to Everett AquaSox. |
| 07/06/24 | Seattle Mariners designated C Seby Zavala for assignment. |
| 07/06/24 | Seattle Mariners recalled RHP Emerson Hancock from Tacoma Rainiers. |
| 07/04/24 | Seattle Mariners claimed OF Duke Ellis off waivers from New York Mets. |
| 07/02/24 | Seattle Mariners sent RHP Gregory Santos on a rehab assignment to Tacoma Rainiers. |
| 07/02/24 | Seattle Mariners signed free agent RHP Chris Devenski. |
| 07/02/24 | Seattle Mariners sent RHP Gregory Santos on a rehab assignment to Tacoma Rainiers. |
| 07/02/24 | Seattle Mariners optioned LHP Jhonathan Diaz to Tacoma Rainiers. |
| 07/02/24 | Seattle Mariners selected the contract of C Seby Zavala from Tacoma Rainiers. |