Red Sox vs Mariners Picks and Prediction – 6/18/2025

The Wednesday MLB schedule will get started with a matchup between the Boston Red Sox and the Seattle Mariners from T-Mobile Park. Be ready for the baseball season with all of our MLB predictions. The Red Sox (38-37) made the surprising decision to trade Rafael Devers to San Francisco on Sunday and are 5.5 games off the pace in the AL East Division race. Last night, Boston SP Walker Buehler (5-5) was tagged for eight runs in three plus innings during an 8-0 road loss against Seattle.

Twenty-five year old southpaw Garrett Crochet (6-4 2.24 ERA) is well positioned to make his second All-Star Game appearance. Through 96 plus innings, Crochet ranks second in the majors with 117 strikeouts and owns a sparkling 1.03 WHIP.

The Seattle Mariners are two games above .500 at home and trail AL West Division leading Houston by 4.5 games. During Tuesday’s home victory, C Cal Raleigh hit his major league leading 27th long ball and drove in six runs to power the Seattle offense. SP Bryan Woo (6-4) allowed just one hit across seven scoreless frames to earn the win for the Mariners, who improved to 37-35 overall. 

The Mariners will counter with thirty-two year old righty Luis Castillo (4-4 3.29 ERA) in the series finale. Last time out, Castillo (6 IP) allowed two runs and fanned seven batters during a 7-2 home victory versus Cleveland. 

Boston OF Masataka Yoshida (shoulder) has resumed throwing and is targeting a mid-July return to the lineup. Through 75 games, Boston ranks 6th in OPS and 5th in runs scored. For the season, Seattle ranks 11th in OPS and 15th in runs scored. Take the Red Sox to win on the road. Final Score Prediction, Boston Red Sox win 4-2.