Seattle Mariners vs Tampa Bay Rays Prediction, Odds and Picks for Monday, 09/01/25

The Seattle Mariners and Tampa Bay square off on Monday night, and we’ve got your prediction right here! Both teams are fighting for an AL Wild Card spot, making this matchup a crucial one for both teams. Taking the mound for Seattle will be Luis Castillo who enters with a 8-7 record and 3.75 ERA. Castillo has been in a little bit of a funk over his last few starts, going 0-1 with a 9.69 ERA in his last three starts. 

For Tampa Bay, Shane Baz gets the nod, entering with an 8-11 record and 5.19 ERA. Baz has struggled recently, going 0-3 with a 7.31 ERA over his last three starts. Offensively, the Mariners are averaging 4.7 runs per game in their last 10, while the Rays are slightly better, averaging 5.2 runs per game in that same span. I simply can’t trust either of these pitchers in tonight’s matchup, especially Baz who has struggled immensely in the second half of this season. Look for both offenses to score early against these starting pitchers as I expect this to be a high scoring affair. 

Mariners vs Rays prediction: Over 8.5  (-115) available at time of publishing. Playable at that number.