The Seattle Mariners (20-20) begin a 3-game series against the Boston Red Sox (22-19) on Monday at Fenway Park. First pitch is scheduled for 7:10 p.m. ET. Let’s analyze BetMGM Sportsbook’s lines around the Mariners vs. Red Sox odds and make our expert MLB picks and predictions for the best bets.
Season series: First meeting of 2023. The Red Sox won the 2022 season series 6-1.
The Mariners lost 5-3 at the Detroit Tigers Sunday as they failed to complete a 3-game sweep. Seattle has gone 6-4 in its last 10 contests.
The Red Sox were defeated by the St. Louis Cardinals 9-1 on Sunday and were swept in the 3-game series. Boston was 5-2 in the 7 games prior to the Cardinals series.
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Mariners at Red Sox projected starters
RHP George Kirby vs. RHP Tanner Houck
Kirby (4-2, 2.62 ERA) makes his 8th start. He has a 0.96 WHIP, 0.6 BB/9 and 7.1 K/9 through 44 2/3 IP.
- Has walked a total of 3 batters in his first 7 starts
- Has logged a quality start in 6 consecutive outings
Houck (3-2, 5.26 ERA) makes his 8th start. He has a 1.33 WHIP, 3.3 BB/9 and 7.9 K/9 through 37 2/3 IP.
- Has allowed 5-plus hits and 3-plus ER in 5 of his first 7 starts
- His 3.64 xERA suggests he’s due for positive regression
Mariners at Red Sox odds
Provided by BetMGM Sportsbook; access USA TODAY Sports Scores and Sports Betting Odds hub for a full list. Lines last updated at 8:47 a.m. ET.
- Moneyline (ML): Mariners -120 (bet $120 to win $100) | Red Sox +100 (bet $100 to win $100)
- Run line (RL)/Against the spread (ATS): Mariners -1.5 (+135) | Red Sox +1.5 (-160)
- Over/Under (O/U): 10 (O: -105 | U: -115)
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Mariners at Red Sox picks and predictions
Prediction
Mariners 5, Red Sox 4
Moneyline
The MARINERS (-120) are the pick in Monday’s matchup with Kirby on the bump. The Red Sox are 0-4 in their last 4 games against a right-handed pitcher, which doesn’t bode well against Kirby.
Run line/Against the spread
RED SOX +1.5 (-160) is the choice despite expecting the Mariners to secure the win. Even though the odds are juiced for Boston to cover the spread, it should be able to keep it close at home on Monday.
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Over/Under
LEAN UNDER 10 (-115).
The Red Sox are 27-13-1 to the Over this season, but Kirby has done a fantastic job limiting runs and Houck faces a Mariners lineup that has been inconsistent.
Seattle is 4-0 to the Under in its last 4 games against a team with a winning record and in its last 4 games against a right-handed starter.
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