The Athletics vs Seattle Mariners Prediction, Odds and Picks for Today, 05/26/26

The Mariners snapped a 2-game losing streak on Monday in a 9-2 win over their division rivals in the Athletics. Seattle punished Aaron Civale, who gave up 7 earned runs on 9 hits and 3 home runs in 4 innings, while Luis Castillo threw 4 scoreless innings for the Mariners that included 6 strikeouts along with just 2 walks and 2 hits. The loss marked the Athletics’ 3rd in 4 games and Seattle’s 3rd win in 5 attempts.

Tuesday’s pitching matchup pits Emerson Hancock and Luis Severino. Hancock has been the better pitcher, carrying a 3-2 record with a 3.07 ER and 1.06 WHIP. Meanwhile, Severino is 2-5 with a 4.23 ERA and 1.44 WHIP. Both pitchers have solid strikeout upside, but Severino has more of a walk problem. Furthermore, Severino’s home splits are not ideal. The right-hander is 1-2 in 4 home starts at that minor-league park in Sacramento with a 5.55 ERA that includes 15 earned runs and 6 home runs allowed on 25 hits in 24.1 innings. Hancock has similar struggles on the road compared to his home starts, but nowhere near as dramatic a difference as Severino’s home-road splits. That said, Hancock allowed 5 runs on 5 hits in Chicago against the White Sox earlier this month.

As far as bullpens go, Seattle has a decent edge with a 3.17 ERA compared to the Athletics at 4.31, along with 36 fewer runs, 7 fewer home runs and 24 fewer walks. While this game projects to be high-scoring, I would rather take the Mariners at a cheap price considering their pitching advantage and Severino’s struggles at home.

Mariners vs Athletics prediction: Seattle Mariners ML (-118) at the time of publishing. Playable to -125.  

Sign up for Polymarket RIGHT NOW to get instant access and a $50 trading bonus after you make your first $20 deposit! You can join Polymarket by clicking here and trade on our Mariners vs Athletics predictions.