Mariners Set to Call Up Power Prospect Lazaro Montes
The 21-year-old Cuban slugger is en route to Boston and expected to be activated Tuesday, coinciding with the September 28-man roster expansion.

Multiple reporters, including MLB.com's Daniel Kramer, confirmed the Seattle Mariners plan to call up outfield prospect Lazaro Montes ahead of Tuesday's game against the Red Sox. Montes is already in transit to Boston but is not expected to be activated for Monday's series opener. The 21-year-old left-handed hitter has slashed .247/.365/.556 this season with 38 home runs across Double-A and Triple-A. His call-up coincides with the expansion of active rosters to 28 players for September.
More on the Mariners wire.

Lazaro Montes Set for MLB Debut with Mariners on Tuesday
Seattle promotes its 56th-ranked prospect to the active roster amid a roster expansion, with an additional 40-man move still needed.

Emerson Hancock on 15-Day IL; Miller Back in Mariners Rotation, Davila Recalled
Seattle placed Hancock on the 15-day IL with a left adductor strain; Miller slides back into the rotation and Davila is recalled from the minors.

Hancock lands on 15-day IL for Seattle
The Mariners have placed RHP Emerson Hancock on the injured list, opening a rotation spot.

Hancock Lands on 15-Day IL With Adductor Strain
Seattle's right-hander Emerson Hancock is sidelined with a left adductor strain, with his IL placement backdated to August 29.

Brandon Walter Gets the Start for Seattle Tomorrow at 10:37 a.m.
The Seattle Mariners announced Brandon Walter as their starting pitcher for tomorrow's 10:37 a.m. game.

Mariners Repeatedly Playing Hurt Players Through Pain in 2025
Seattle's beat reporter flags a pattern of the Mariners keeping injured players in the lineup rather than removing them.
