Trevor Story drove in the winning run with a bases-loaded single in the 10th inning after Seattle walked the two batters before him intentionally, lifting the Boston Red Sox to a 9-8 comeback victory over the Seattle Mariners.

The Toronto Blue Jays completed their sweep over the weekend against the Seattle Mariners. Catcher Alejandro Kirk continued what has been an excellent stretch, going 3-for-8 during the series with three RBIs,

A comprehensive preview, including betting odds and predictions, for the MLB game between the Chicago Cubs and Seattle Mariners on Aug. 21, 2026.

First-time Polymarket users can claim $20 in bonus funds using promo code MASS, with Boston favored at 60% to beat Seattle on Monday.

The Seattle Mariners have taken a significant step toward bolstering their pitching staff by selecting the contract of highly touted left-hander Kade Anderson from Double-A Arkansas.

Kyle Schwarber hit his MLB-leading 40th home run, Jesús Luzardo struck out nine in seven innings and the Philadelphia Phillies beat the Seattle Mariners 6-0.

The Seattle Mariners will promote Lazaro Montes, who has 38 home runs in the minor leagues, for their series against the Boston Red Sox.

Left-hander Kade Anderson, the prized pitching prospect of the Seattle Mariners, will be promoted to make his highly anticipated MLB debut Saturday against the Chicago Cubs.

By Field Level Media Aug 31 (Field Level Media) - The Seattle Mariners activated right-hander Cooper Criswell from the 60-day injured list Monday. Criswell, 30, had been on the IL since June 9 with a right shoulder strain.