The Cardinals are looking for top prospects in a Brendan Donovan deal and the Mariners and Giants are competing for the All-Star's services.

Jorge Polanco is reportedly signing with the Mets, which brings uncertainty and opportunity to the Seattle Mariners' offseason, insider Shannon Drayer reports.

During the first day of the MLB Winter Meetings, Jerry Dipoto, the Seattle Mariners President of Baseball Operations, said, “We feel like we got the No.

Seattle figures to have six spots in the bullpen already accounted for with Andres Munoz, Matt Brash, Eduard Bazardo, Gabe Speier, Ferrer and Carlos Vargas. Seattle has said it wants to bring in another outside arm, which would leave just one additional spot in the 'pen.

The Seattle Mariners came into the offseason with three key free agents: Eugenio Suárez, Jorge Polanco, and Josh Naylor. It didn't take long for the Mariners to

Could the Mariners land Diamondbacks star? Breaking down Ketel Marte Mariners fit and Diamondbacks trade outlook.

The Mariners have found their leading candidate to be their backup catcher in 2026. The club is nearing an agreement on a Major League contract with veteran backstop Andrew Knizner, sources told MLB.com on Friday night,

The Seattle Mariners have been quiet since re-signing Josh Naylor this offseason. They didn’t make any moves at the Winter Meetings, but that doesn’t mean that

As shown by his trading away of Sonny Gray, president of baseball operations Chaim Bloom isn't afraid to make a big deal.

While the Mariners will retain most of the roster that went deep into October last season, their 2026 group won’t feature a full-fledged form of “running it back.” Jorge Polanco, one of their most imp

Seattle still wants to address second base, but look to be standing pat at the hot corner. Visit MLB Trade Rumors for more.

The Mariners are closing in a deal to sign veteran free agent catcher Andrew Knizner, industry sources told The Seattle Times. A contract had not been finalized as of Friday afternoon. Knizner, 30, would serve as Cal Raleigh’s backup,

In a recent episode of the Refuse to Lose podcast, Buster Olney believes the Mariners took advantage of Ford's trade value at the right time.