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The Seattle Mariners (34-27) and Oakland A’s (24-37) open a 3-game set at Oakland Coliseum Tuesday. First pitch is scheduled for 9:40 p.m. ET. Let’s analyze BetMGM Sportsbook’s lines around the Mariners vs. A’s odds and make our expert MLB picks and predictions for the best bets.
Season series: Mariners lead 2-1
Seattle completed a 3-game home sweep of the Los Angeles Angels, winning 5-1 as a -204 favorite Sunday with the Under (7) hitting. RHP Luis Castillo allowed just 2 hits in 7 shutout innings for the Mariners, who have won 7 of their last 9 games.
Oakland dropped 2 of 3 games at the Atlanta Braves over the weekend. The A’s lost 3-1 as +219 underdogs in the series finale Sunday as the Under (8.5) cashed. The A’s have lost 4 of their last 5 games.
Mariners at A’s projected starters
RHP George Kirby vs. RHP Mitch Spence
Kirby (4-5, 4.08 ERA) makes his 13th start. He has a 1.02 WHIP, 0.8 BB/9 and 8.6 K/9 in 68 1/3 innings.
- Last start: No-decision, 6 IP, 1 ER, 6 H, 0 BB, 8 K in 2-1 home win in 10 innings over Houston Astros Wednesday
- 2024 road stats: 0-4, 5.63 ERA (32 IP, 20 ER), 1.22 WHIP, 6.5 K/9 in 6 starts
- Career vs. A’s: 3-0, 4.19 ERA (34 1/3 IP, 16 ER), 1.28 WHIP, 7.9 K/9 in 6 starts, including 2-0 with 3.86 ERA (14 IP, 6 ER) in 2 starts last season
Spence (4-2, 3.52 ERA) makes his 4th start and 15th appearance. The rookie has a 1.15 WHIP, 2.8 BB/9 and 8.0 K/9 in 38 1/3 innings.
- Last start: Win, 5 1/3 IP, 0 ER, 1 H, 1 BB, 4 K in 3-0 victory at Tampa Bay Rays May 28
- 2024 home stats: 2-1, 4.19 ERA (19 1/3 IP, 9 ER), 1.45 WHIP, 9.3 K/9 in 1 start and 6 relief appearances
- Career vs. Mariners: 0-0, 0.00 ERA (1 IP), 1 H, 0 BB, 0 K in 1 relief appearance of 8-1 road victory May 11
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Mariners at A’s odds
Provided by BetMGM Sportsbook, one of the most popular betting apps; access USA TODAY Sports Scores and Sports Betting Odds hub for a full list. Lines last updated at 4:21 p.m. ET.
- Moneyline (ML): Mariners -160 (bet $160 to win $100) | A’s +135 (bet $100 to win $135)
- Run line (RL)/Against the spread (ATS): Mariners -1.5 (+105) | A’s +1.5 (-130)
- Over/Under (O/U): 7.5 (O: -120 | U: +100)
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Mariners at A’s picks and predictions
Prediction
Mariners 3, A’s 2
Moneyline
The Mariners (-160) will likely win, but they’re a little overpriced, especially since they’re just 4-8 over their last 12 road games.
PASS. Bet the run line and/or total instead.
Run line/Against the spread
Seattle (-1.5, +105) has struggled away from home recently and hasn’t won a road series since taking 2 of 3 games at the Houston Astros May 3-5. Kirby has been part of the problem, allowing 4 or more earned runs in 3 straight road starts.
Spence has allowed a total of just 3 runs over his 3 career starts (13 IP) and is coming off 5 1/3 shutout innings at Tampa Bay. The rookie should be able to do just enough to keep the A’s within striking distance.
BET A’S +1.5 (-130).
Over/Under
Spence hasn’t allowed more than 2 earned runs in a start, and the Mariners have scored 3 runs or fewer in 4 of their last 5 road games.
The risk here, however, is that Kirby has given up 14 earned runs over his last 3 road starts (17 IP). Oakland’s 27th-ranked offense (3.79 runs per game) may not be able to take advantage, though.
LEAN UNDER 7.5 (+100).
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