Mariners Roster & Staff
Transactions
| Date | Transaction |
| 05/28/24 | Seattle Mariners signed free agent RHP Joseph Hernandez to a minor league contract. |
| 05/27/24 | Seattle Mariners placed SS Jorge Polanco on the 10-day injured list. Right hamstring strain. |
| 05/27/24 | Seattle Mariners recalled 2B Sam Haggerty from Tacoma Rainiers. |
| 05/27/24 | Seattle Mariners selected the contract of SS Ryan Bliss from Tacoma Rainiers. |
| 05/26/24 | Seattle Mariners activated LHP Tayler Saucedo from the 15-day injured list. |
| 05/26/24 | Seattle Mariners optioned RHP Eduard Bazardo to Tacoma Rainiers. |
| 05/26/24 | Chicago White Sox claimed LHP Sammy Peralta off waivers from Seattle Mariners. |
| 05/24/24 | Seattle Mariners recalled OF Jonatan Clase from Tacoma Rainiers. |
| 05/24/24 | Seattle Mariners optioned 3B Luis Urías to Tacoma Rainiers. |
| 05/23/24 | Seattle Mariners activated RHP Mike Baumann. |
| 05/23/24 | Seattle Mariners sent LHP Tayler Saucedo on a rehab assignment to Tacoma Rainiers. |
| 05/23/24 | Seattle Mariners designated LHP Sammy Peralta for assignment. |
| 05/23/24 | Seattle Mariners signed free agent LHP Dallas Keuchel to a minor league contract. |
| 05/23/24 | Seattle Mariners sent LHP Tayler Saucedo on a rehab assignment to Tacoma Rainiers. |
| 05/23/24 | Seattle Mariners claimed RHP Eduardo Salazar off waivers from Los Angeles Dodgers. |
| 05/23/24 | Seattle Mariners optioned RHP Eduardo Salazar to Tacoma Rainiers. |
| 05/23/24 | Seattle Mariners optioned RHP Cody Bolton to Tacoma Rainiers. |
| 05/22/24 | Seattle Mariners traded C Blake Hunt to Baltimore Orioles for RHP Mike Baumann and C Michael Pérez. |
| 05/22/24 | Seattle Mariners traded C Blake Hunt to Baltimore Orioles for RHP Mike Baumann and C Michael Pérez. |
| 05/22/24 | Seattle Mariners traded C Blake Hunt to Baltimore Orioles for RHP Mike Baumann and C Michael Pérez. |
| 05/22/24 | Seattle Mariners optioned LHP Jhonathan Diaz to Tacoma Rainiers. |
| 05/22/24 | Seattle Mariners selected the contract of LHP Jhonathan Diaz from Tacoma Rainiers. |
| 05/20/24 | Seattle Mariners activated SS J.P. Crawford from the 10-day injured list. |
| 05/20/24 | Seattle Mariners activated SS J.P. Crawford from the 10-day injured list. |
| 05/20/24 | Seattle Mariners optioned SS Leo Rivas to Tacoma Rainiers. |
| 05/17/24 | Seattle Mariners signed free agent RHP Roberto Perez to a minor league contract. |
| 05/15/24 | Seattle Mariners activated RF Dominic Canzone from the 10-day injured list. |
| 05/15/24 | Seattle Mariners optioned 2B Sam Haggerty to Tacoma Rainiers. |
| 05/14/24 | Seattle Mariners sent SS J.P. Crawford on a rehab assignment to Tacoma Rainiers. |
| 05/14/24 | Chicago Cubs traded SS Jake Slaughter and cash to Seattle Mariners for RHP Tyson Miller. |
| 05/14/24 | Chicago Cubs traded SS Jake Slaughter and cash to Seattle Mariners for RHP Tyson Miller. |
| 05/13/24 | Seattle Mariners signed free agent RHP Ruben Ramirez to a minor league contract. |
| 05/11/24 | Seattle Mariners sent RF Dominic Canzone on a rehab assignment to Tacoma Rainiers. |
| 05/10/24 | Seattle Mariners signed free agent RHP Gregori Arrieche to a minor league contract. |
| 05/10/24 | Seattle Mariners designated RHP Tyson Miller for assignment. |
| 05/10/24 | Seattle Mariners activated RHP Bryan Woo from the 15-day injured list. |
| 05/08/24 | Seattle Mariners transferred RHP Matt Brash from the 15-day injured list to the 60-day injured list. Right elbow inflammation. |
| 05/08/24 | Seattle Mariners activated RHP Eduard Bazardo from the 15-day injured list. |
| 05/08/24 | Seattle Mariners placed LHP Tayler Saucedo on the 15-day injured list. Right knee hyperextension. |
| 05/08/24 | Seattle Mariners optioned RHP Emerson Hancock to Tacoma Rainiers. |
| 05/08/24 | Seattle Mariners selected the contract of LHP Kirby Snead from Tacoma Rainiers. |