Date	Player	Transaction
Transaction
4/28/25	Casey Lawrence RP	The Seattle Mariners waived RHP Casey Lawrence.
The Seattle Mariners waived RHP Casey Lawrence.
4/8/25	Cody Bolton RP	The Seattle Mariners traded RHP Cody Bolton to the Cleveland Guardians.
The Seattle Mariners traded RHP Cody Bolton to the Cleveland Guardians.
3/31/25	Travis Kuhn RP	The Seattle Mariners released RHP Travis Kuhn.
The Seattle Mariners released RHP Travis Kuhn.
3/23/25	Jesse Hahn RP	The Seattle Mariners released RHP Jesse Hahn.
The Seattle Mariners released RHP Jesse Hahn.
3/23/25	Mitch Haniger RF	The Seattle Mariners released OF Mitch Haniger.
The Seattle Mariners released OF Mitch Haniger.
3/23/25	Drew Pomeranz RP	The Seattle Mariners released LHP Drew Pomeranz.
The Seattle Mariners released LHP Drew Pomeranz.
3/15/25	Seth Martinez RP	The Seattle Mariners waived RHP Seth Martinez.
The Seattle Mariners waived RHP Seth Martinez.
3/14/25	Neftali Feliz RP	The Seattle Mariners released RHP Neftali Feliz.
The Seattle Mariners released RHP Neftali Feliz.
3/2/25	Dauris Valdez SP	The Seattle Mariners released RHP Dauris Valdez.
The Seattle Mariners released RHP Dauris Valdez.
2/7/25	Jhonathan Diaz RP	Seattle Mariners LHP Jhonathan Díaz declared free agency.
Seattle Mariners LHP Jhonathan Díaz declared free agency.
2/3/25	Casey Legumina SP	The Cincinnati Reds traded RHP Casey Legumina to the Seattle Mariners.
The Cincinnati Reds traded RHP Casey Legumina to the Seattle Mariners.
1/28/25	Tyler Jay RP	LHP Tyler Jay elected free agency.
LHP Tyler Jay elected free agency.
1/21/25	Will Klein RP	The Athletics traded RHP Will Klein to the Seattle Mariners.
The Athletics traded RHP Will Klein to the Seattle Mariners.
1/15/25	Blake Hunt C	The Baltimore Orioles traded C Blake Hunt to the Seattle Mariners.
The Baltimore Orioles traded C Blake Hunt to the Seattle Mariners.
1/14/25	Miles Mastrobuoni 3B	The Chicago Cubs traded INF Miles Mastrobuoni to the Seattle Mariners.
The Chicago Cubs traded INF Miles Mastrobuoni to the Seattle Mariners.
1/9/25	Tyler Jay RP	The Seattle Mariners claimed LHP Tyler Jay off waivers from the Milwaukee Brewers.
The Seattle Mariners claimed LHP Tyler Jay off waivers from the Milwaukee Brewers.
1/8/25	Hagen Danner RP	The Seattle Mariners claimed RHP Hagen Danner off from the Toronto Blue Jays.
The Seattle Mariners claimed RHP Hagen Danner off from the Toronto Blue Jays.
12/19/24	Nicholas Raposo C	The Seattle Mariners claimed C Nick Raposo off waivers from the Toronto Blue Jays.
The Seattle Mariners claimed C Nick Raposo off waivers from the Toronto Blue Jays.
12/12/24	Edgar Martinez DH	The Seattle Mariners waived DH Edgar Martinez.
The Seattle Mariners waived DH Edgar Martinez.
11/22/24	JT Chargois RP	RHP JT Chargois elected free agency.
RHP JT Chargois elected free agency.
11/22/24	Sam Haggerty LF	The Seattle Mariners released OF Sam Haggerty.
The Seattle Mariners released OF Sam Haggerty.
11/22/24	Josh Rojas 3B	The Seattle Mariners released INF Josh Rojas.
The Seattle Mariners released INF Josh Rojas.
11/22/24	Austin Voth RP	The Seattle Mariners released RHP Austin Voth.
The Seattle Mariners released RHP Austin Voth.
11/19/24	Austin Shenton 1B	The Tampa Bay Rays traded INF Austin Shenton to the Seattle Mariners.
The Tampa Bay Rays traded INF Austin Shenton to the Seattle Mariners.
11/4/24	Jake Anchia C	C Jake Anchia elected free agency.
C Jake Anchia elected free agency.
11/4/24	Josh Fleming RP	LHP Josh Fleming elected free agency.
LHP Josh Fleming elected free agency.
11/4/24	Joey Krehbiel RP	RHP Joey Krehbiel elected free agency.
RHP Joey Krehbiel elected free agency.
11/4/24	Nick Solak LF	OF Nick Solak elected free agency.
OF Nick Solak elected free agency.
11/1/24	Jorge Polanco 3B	The Seattle Mariners released INF Jorge Polanco.
The Seattle Mariners released INF Jorge Polanco.
11/1/24	Luis Urias 3B	INF Luis Urías elected free agency.
INF Luis Urías elected free agency.