Buyers and sellers who will define the 2026 MLB trade deadline

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The Seattle Mariners designated INF Buddy Kennedy for assignment.

The Seattle Mariners activated DH Rob Refsnyder from the 10-day injured list.

The Seattle Mariners optioned RHP Nick Davila to the minors.

The Seattle Mariners recalled RHP Alex Hoppe from the minors.

The Seattle Mariners signed C Jacob Galloway to a minor league contract.

The Seattle Mariners signed C Jake Harvey to a minor league contract.

The Seattle Mariners signed OF Kyle Boylston to a minor league contract.

The Seattle Mariners outrighted INF Miles Mastrobuoni to the minors.

The Seattle Mariners signed draft pick INF Eric Jeon.

The Seattle Mariners designated INF Miles Mastrobuoni for assignment.

The Seattle Mariners activated OF Julio Rodríguez from the 7-day injured list.

The Seattle Mariners signed INF Ace Reese to the minors.

The Seattle Mariners drafted C Mason Eckelman.

The Seattle Mariners drafted INF Ryan Wynn.

The Seattle Mariners drafted INF Henry Ford.

The Seattle Mariners drafted OF Hayden Yost.

The Seattle Mariners drafted INF Trevor Lucas.

The Seattle Mariners drafted RHP Nathan Taylor.

The Seattle Mariners drafted OF Jake Brown.

The Seattle Mariners drafted INF Ace Reese.

The Seattle Mariners signed OF Stuart Fairchild to a minor league contract.

The Seattle Mariners transferred RHP Cooper Criswell to the 60-day injured list.

The Seattle Mariners placed OF Julio Rodríguez on the 7-day injured list.

The Seattle Mariners selected the contract of INF Miles Mastrobuoni from the minors.

The Seattle Mariners optioned LHP Josh Simpson to the minors.

The Seattle Mariners recalled RHP Cole Wilcox from the minors.

The Seattle Mariners recalled INF Buddy Kennedy from the minors.

The Seattle Mariners placed DH Rob Refsnyder on the 10-day injured list.

The Seattle Mariners optioned RHP Alex Hoppe to the minors.

The Seattle Mariners recalled LHP Josh Simpson from the minors.

The Seattle Mariners sent INF Miles Mastrobuoni outright to the minors.

The Seattle Mariners optioned OF Connor Joe to the minors.

The Seattle Mariners activated OF Randy Arozarena from the 10-day injured list.

The Seattle Mariners outrighted OF Curtis Washington to the minors.

The Seattle Mariners selected the contract of INF Weston Wilson from the minors.

The Seattle Mariners signed INF Weston Wilson to a minor league contract.

The Seattle Mariners traded RHP Randy Dobnak to the Kansas City Royals.

The Seattle Mariners optioned OF Curtis Washington to the minors.

The Seattle Mariners recalled OF Connor Joe from the minors.

The Seattle Mariners placed INF Will Wilson on the 60-day injured list due to left thumb fracture.

The Seattle Mariners placed OF Randy Arozarena on the 10-day injured list.

The Seattle Mariners optioned C Jhonny Pereda to the minors.

The Seattle Mariners activated INF J.P. Crawford from the 10-day injured list.

The Seattle Mariners activated C Cal Raleigh from the 10-day injured list.

The Seattle Mariners sent RHP Domingo González outright to the minors.

The Seattle Mariners optioned INF Patrick Wisdom to the minors.

The Seattle Mariners traded RHP Yosver Zulueta to the Chicago Cubs.

The Seattle Mariners designated RHP Domingo González for assignment.

The Seattle Mariners selected the contract of RHP Michael Rucker from the minors.

The Seattle Mariners designated RHP Yosver Zulueta for assignment.

The Seattle Mariners placed RHP Matt Brash on the 15-day injured list.

The Seattle Mariners optioned INF Ryan Bliss to the minors.

The Seattle Mariners recalled RHP Domingo González from the minors.

The Seattle Mariners activated INF Miles Mastrobuoni from the 60-day injured list.

The Seattle Mariners placed RHP Cooper Criswell on the 15-day injured list.

The Seattle Mariners recalled RHP Nick Davila from the minors.

The Pittsburgh Pirates traded RHP Carson Fulmer to the Seattle Mariners.

The Seattle Mariners recalled INF Ryan Bliss from the minors.

The Seattle Mariners placed INF J.P. Crawford on the 10-day injured list.

The Seattle Mariners released RHP Brendan White.

The Seattle Mariners signed RHP Amos Willingham to a minor league contract.

The Seattle Mariners activated LHP Gabe Speier from the 15-day injured list.

The Seattle Mariners activated OF Victor Robles from the 10-day injured list.

The Seattle Mariners optioned LHP Robinson Ortiz to the minors.

The Seattle Mariners activated RHP Matt Brash from the 15-day injured list.

The Seattle Mariners optioned OF Brennen Davis to the minors.

The Seattle Mariners optioned INF Leo Rivas to the minors.

The Seattle Mariners optioned RHP Domingo González to the minors.

The Seattle Mariners activated INF Patrick Wisdom from the 10-day injured list.

The Seattle Mariners recalled LHP Robinson Ortiz from the minors.

The Seattle Mariners placed INF Brendan Donovan on the 10-day injured list.

The Seattle Mariners recalled INF Colt Emerson from the minors.

The Seattle Mariners traded LHP José Suarez to the Athletics.

The Seattle Mariners placed C Cal Raleigh on the 10-day injured list.

The Seattle Mariners activated LHP Jose A. Ferrer from the paternity list.

The Seattle Mariners recalled C Jhonny Pereda from the minors.

The Seattle Mariners designated LHP José Suarez for assignment.

The Seattle Mariners activated RHP Bryce Miller from the 15-day injured list.

The Seattle Mariners placed LHP Jose A. Ferrer on the Paternity Leave list.

The Seattle Mariners waived OF Rhylan Thomas.

The Seattle Mariners activated INF Brendan Donovan from the 10-day injured list.

The Seattle Mariners signed RHP Sam Whiting to a minor league contract.

The Seattle Mariners optioned RHP Cole Wilcox to the minors.

The Seattle Mariners recalled LHP José Suarez from the minors.

The Seattle Mariners placed LHP Gabe Speier on the 15-day injured list.

The Seattle Mariners claimed LHP José Suarez off waivers from the Texas Rangers.

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