Mariners vs. A's Prediction, Odds, Probable Pitchers, Prop Bets for Monday, May 25

In this story:
We're approaching the end of May, and the Athletics are still holding on to the AL West lead, 2.5 games above the Seattle Mariners.
The two teams will face each other in a three-game series this week, and if the Mariners pull off the sweep, they'll take over the top spot in the division. That means there's a lot on the line when the series opens on Monday night.
Let's dive into the odds and my best bet for tonight's game.
Mariners vs. Athletics Odds, Run Line, and Total
Run Line
- Mariners -1.5 (+135)
- Athletics +1.5 (-160)
Moneyline
- Mariners -115
- Athletics -105
Total
- OVER 10.5 (-115)
- UNDER 10.5 (-105)
Mariners vs. Athletics Probable Pitchers
- Seattle: Luis Castillo, RHP (1-5, 6.41 ERA)
- Athletics: Aaron Civale, RHP (5-1, 3.31 ERA)
Mariners vs. Athletics How to Watch
- Date: Monday, May 25
- Time: 9:40 p.m. ET
- Venue: Sutter Health Park
- How to Watch (TV): NBCSCA, Mariners.TV
- Mariners record: 25-29
- Athletics record: 27-26
Mariners vs. Athletics Best MLB Prop Bet
- Luis Castillo OVER 2.5 Earned Runs Allowed (-128)
Luis Castillo has been horrific this season. He has a 6.41 ERA and a 1.554 WHIP. He has also allowed 3+ earned runs in six of his 10 starts this season. Now, he has to face an Athletics team that's fifth in the Majors in wRC+ over the past 30 days. I'm willing to bet that Castillo's bad season continues tonight.
Mariners vs. Athletics Prediction and Pick
The betting market hasn't started to truly believe in this Athletics team, and that continues to be the case tonight, being set as -105 home underdogs to a Mariners team that's rolling with a pitcher with a 6.41 ERA.
I'm going to trust the numbers. The Athletics are fifth in the Majors in wRC+ over the past 30 days at 106, along with a team OPS of .732. That's above the Mariners, who are seventh in wRC+ over that time frame with an OPS of .700.
I'll back the home underdog with the better offense and the better starting pitcher.
Pick: Athletics -105 via Caesars
Follow Iain on X and Instagram
Use our exclusive Caesars Sportsbook promo code SIBONUSDYW to earn up to a 10 100% Boosts when you sign up and make your first wager with the online sportsbook.
Odds refresh periodically and are subject to change.
If you or someone you know has a gambling problem and wants help, call 1-800-GAMBLER.
You can check out all of Iain's bets here!
-eb6ee9a9f2179a90cbfe0d8c654d1a62.jpg)
Originally from Nova Scotia, Iain MacMillan is a senior editor covering betting, with a focus on NFL, NHL, and golf. He hosts the Bacon Bets Podcast and has been featured on VSIN, BetQL and Monumental Sports Network. He is a member of the Metropolitan Golf Writers Association and his beloved Falcons and Maple Leafs break his heart on a yearly basis.
Follow iainmacbets