The Oakland Athletics (10-38) begin a 4-game series against the Seattle Mariners (22-24) on Monday at T-Mobile Park. First pitch is scheduled for 9:40 p.m. ET (ESPN+). Let’s analyze BetMGM Sportsbook’s lines around the Athletics vs. Mariners odds and make our expert MLB picks and predictions for the best bets.
Season series: Mariners lead 3-0
The Athletics were shut out by the Houston Astros 2-0 on Sunday. Oakland is amid a 4-game losing streak and has lost 8 of its last 10 contests.
The Mariners lost 3-2 against the Atlanta Braves Sunday. Seattle has lost 4 of its last 5 games and was 4-6 in its last 10 contests.
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Athletics at Mariners projected starters
LHP Kyle Muller vs. RHP Luis Castillo
Muller (1-3, 7.71 ERA) makes his 10th start. He has a 1.95 WHIP, 4.5 BB/9 and 6.4 K/9 through 42 IP.
- Has given up 4-plus ER in 6 of his first 9 starts and 5-plus ER in 3 straight turns
- Has allowed 1 HR in 7 consecutive starts
Castillo (2-2, 3.31 ERA) makes his 10th start. He has a 1.05 WHIP, 1.9 BB/9 and 10.1 K/9 through 51 2/3 IP.
- After giving up a combined 2 ER in his first 4 starts, he’s surrendered 3-plus ER in 4 of his last 5 outings
- Has allowed a total of 6 HR in his last 4 turns
Athletics at Mariners odds
Provided by BetMGM Sportsbook; access USA TODAY Sports Scores and Sports Betting Odds hub for a full list. Lines last updated at 8:45 a.m. ET.
- Moneyline (ML): Athletics +240 (bet $100 to win $240) | Mariners -300 (bet $300 to win $100)
- Run line (RL)/Against the spread (ATS): Athletics +2.5 (-120) | Mariners -2.5 (+100)
- Over/Under (O/U): 7.5 (O: -120 | U: +100)
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Athletics at Mariners picks and predictions
Prediction
Mariners 6, Athletics 2
Moneyline
AVOID.
Unless you believe the Athletics can pull off the upset on the road, then wagering on the moneyline in this game isn’t worth the risk. The Mariners (-300) are likely to win, but the odds are too steep to warrant a bet.
Run line/Against the spread
I typically wouldn’t advocate for a team to win by 3 runs, but MARINERS -2.5 (+100) is the pick in this game with the pitching matchup being lopsided. Despite Castillo’s recent woes, Muller has been one of the worst starters in baseball and the Athletics are a perfect get-right team for Castillo to face.
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Over/Under
LEAN OVER 7.5 (-120).
Even with Castillo on the mound for the Mariners and limiting the Athletics, Muller is bleeding runs to opposing teams at a torrid pace. And even when Muller exits the game, Oakland’s bullpen has allowed the most earned runs (135) in the league.
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