The Seattle Mariners optioned Luis F. Castillo to Triple-A after his start Wednesday, and it appears they could roll with a four-man rotation for a while.

Six-time All-Star J.D. Martinez remains a free agent, and the Seattle Mariners' roster is very much in need of a right-handed bat.

The largest free agent signing, really, was Jorge Polanco. A guy the Mariners let walk from the roster in November, only to ...

The floor of this roster being a playoff team hinges on the rotation maintaining its remarkable health. The Mariners only played 13 games last ... pitching honor last year, but that could change this ...

Mariners brass, meanwhile have expressed interest in extending all of their young starters. Read more at MLB Trade Rumors.

In the series finale against the San Francisco Giants on Sunday, Victor Robles made an incredible play diving into the net in the right-field corner. He came away from the play in some pain and was ...

All main T-Mobile Park gates open 90 minutes before the first pitch. The T-Mobile 'Pen gate, located next to the Mariners' ...

Logan Gilbert takes the mound as the Mariners host the Athletics on opening day. Follow along for score updates and more as ...

PEORIA, Ariz. — While the decision to release Mitch Haniger garnered most of the attention on Sunday, the Mariners also made a series of other roster moves that essentially set their 26-man ...

SEATTLE — On Dec. 28, 2023, the Seattle Mariners gave out the largest contract for a position player in president of baseball operations Jerry Dipoto's decade-long tenure. That contract — two ...