Mariners vs Red Sox Prediction, Odds, Moneyline, Spread & Over/Under for July 31

Odds updated as of 4:14 PM

The Seattle Mariners will take on the Boston Red Sox in MLB action on Wednesday.

Here's everything you need to know before checking out today's MLB odds and spreads on FanDuel Sportsbook.

Mariners vs Red Sox Game Info

• Seattle Mariners (57-52) vs. Boston Red Sox (56-50)
• Date: Wednesday, July 31, 2024
• Time: 4:10 PM ET
• Venue: Fenway Park -- Boston, Massachusetts
• Coverage: ROOT Sports NW

Mariners vs Red Sox Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-112) | BOS: (-104)
• Spread: SEA: -1.5 (+138) | BOS: +1.5 (-166)
• Total: 9.5 -- Over: (-105) | Under: (-115)

Mariners vs Red Sox Probable Starting Pitchers

Probable Pitchers: George Kirby (Mariners) - 8-7, 3.03 ERA vs Brayan Bello (Red Sox) - 10-5, 5.27 ERA

The probable pitchers are George Kirby (8-7) for the Mariners and Brayan Bello (10-5) for the Red Sox. When Kirby starts, his team is 8-14-0 against the spread this season. Kirby's team has a record of 8-7 this season when he starts and they are the favorite on the moneyline. The Red Sox have a 9-9-0 record against the spread in Bello's starts. The Red Sox have a 6-2 record in Bello's eight starts this season when they were the moneyline underdog.

Mariners vs Red Sox Moneyline

• Boston is a -104 underdog on the moneyline, while Seattle is a -112 favorite on the road.

Mariners vs Red Sox Spread

• The Red Sox are at +1.5 on the runline against the Mariners. The Red Sox are -166 to cover the spread, and the Mariners are +138.

Mariners vs Red Sox Over/Under

• The over/under for Mariners-Red Sox on July 31 is 9.5. The over is -105, and the under is -115.

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Mariners vs Red Sox Betting Trends

• The Mariners have won in 39, or 57.4%, of the 68 contests they have been named as odds-on favorites in this year.
• Seattle has a record of 39-28 when favored by -112 or more this year.
• The Mariners and their opponents have gone over the total this season in 47 of their 108 opportunities.
• In 108 games with a line this season, the Mariners have a mark of 49-59-0 against the spread.
• The Red Sox have won 23 of the 46 games they were the moneyline underdog this season (50%).
• Boston is 22-20 (winning 52.4% of its games) when it has played as a moneyline underdog of -104 or longer.
• The Red Sox have had an over/under set by oddsmakers 105 times, and have combined with opponents to go over the total in 54 of those games (54-47-4).
• The Red Sox have gone 49-56-0 ATS this season.

Mariners Player Leaders

• Randy Arozarena has 20 doubles, 16 home runs and 47 walks while batting .219. He has an on-base percentage of .323 and a slugging percentage of .404.
• Among qualified hitters, he ranks 129th in batting average, his on-base percentage ranks 72nd, and he is 90th in slugging.
• Arozarena hopes to build on a four-game hitting streak in this matchup. In his last five games he is batting .316 with a double, a home run, two walks and three RBI.
• Cal Raleigh has 77 hits, which ranks first among Seattle batters this season. He's batting .215 with 33 extra-base hits. He's also slugging .436 with an on-base percentage of .300.
• He ranks 134th in batting average, 112th in on-base percentage and 55th in slugging among qualifying batters.
• Justin Turner leads Seattle in OBP (.348) this season, fueled by 78 hits.
• Turner brings a five-game hitting streak into this game. In his last five games he is hitting .474 with two doubles, a walk and two RBI.
• Dylan Moore has been key for Seattle with 56 hits, an OBP of .316 plus a slugging percentage of .413.
• Moore has safely hit in five straight games. During his last five outings he is batting .316 with four doubles, a home run, two walks and seven RBI.

Red Sox Player Leaders

• Jarren Duran has a .504 slugging percentage, which paces the Red Sox. He's batting .290 with an on-base percentage of .349.
• He is 17th in batting average, 32nd in on-base percentage and 16th in slugging percentage among all qualified hitters in the big leagues.
• Rafael Devers has collected 107 hits with a .381 on-base percentage to lead his team in both. He has a batting average of .301 while slugging .600.
• He is 12th in batting average, 11th in on-base percentage and third in slugging percentage in the big leagues.
• Tyler O'Neill is batting .269 with 16 doubles, 22 home runs and 36 walks.
• Ceddanne Rafaela has 16 doubles, four triples, 12 home runs and 12 walks while batting .255.

Mariners vs Red Sox Head to Head

• 7/30/2024: 10-6 SEA (Favorite: Mariners, Spread: -1.5, Total: 10.5, Favorite Moneyline: -118, Underdog Moneyline: -100)
• 7/29/2024: 14-7 BOS (Favorite: Red Sox, Spread: -1.5, Total: 8.5, Favorite Moneyline: -120, Underdog Moneyline: +102)
• 3/31/2024: 5-1 BOS (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -120, Underdog Moneyline: +102)
• 3/30/2024: 4-3 SEA (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -164, Underdog Moneyline: +138)
• 3/29/2024: 1-0 SEA (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -156, Underdog Moneyline: +132)
• 3/28/2024: 6-4 BOS (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -154, Underdog Moneyline: +130)
• 8/2/2023: 6-3 SEA (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -126, Underdog Moneyline: +108)
• 8/1/2023: 6-4 BOS (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -108, Underdog Moneyline: -108)
• 7/31/2023: 6-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -126, Underdog Moneyline: +108)
• 5/17/2023: 12-3 BOS (Favorite: Red Sox, Spread: -1.5, Total: 9.5, Favorite Moneyline: -134, Underdog Moneyline: +114)

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