Astros vs Red Sox Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 3

Odds updated as of 10:18 p.m.

MLB action on Sunday includes the Houston Astros playing the Boston Red Sox.

Before you do any MLB betting on this game at FanDuel Sportsbook, here's everything you need to know.

Astros vs Red Sox Game Info

• Houston Astros (62-49) vs. Boston Red Sox (61-51)
• Date: Sunday, August 3, 2025
• Time: 11:35 a.m. ET
• Venue: Fenway Park -- Boston, Massachusetts
• Coverage: Roku

Astros vs Red Sox Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: HOU: (-120) | BOS: (+102)
• Spread: HOU: -1.5 (+130) | BOS: +1.5 (-156)
• Total: 8.5 -- Over: (-102) | Under: (-120)

Astros vs Red Sox Probable Starting Pitchers

Probable Pitchers: Framber Valdez (Astros) - 11-4, 2.62 ERA vs Lucas Giolito (Red Sox) - 7-2, 3.80 ERA

The probable starters are Framber Valdez (11-4) for the Astros and Lucas Giolito (7-2) for the Red Sox. Valdez's team is 10-10-0 against the spread this season in his starts. Valdez's team has won 64.7% of his starts when they are favored on the moneyline (11-6). The Red Sox have an 11-5-0 record against the spread in Giolito's starts. The Red Sox have a 5-3 record in Giolito's eight starts this season when they were the underdog on the moneyline.

Astros vs Red Sox Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Astros win (55.7%)

Astros vs Red Sox Moneyline

• The Astros vs Red Sox moneyline has Houston as a -120 favorite, while Boston is a +102 underdog at home.

Astros vs Red Sox Spread

• The Astros are at the Red Sox and are favored by 1.5 runs on the spread. The Astros are +130 to cover the runline, with the Red Sox being -156.

Astros vs Red Sox Over/Under

• Astros versus Red Sox on Aug. 3 has an over/under of 8.5 runs, with the odds on the over -102 and the under set at -120.

Bet on Houston Astros vs. Boston Red Sox on FanDuel today!

Astros vs Red Sox Betting Trends

• The Astros have been victorious in 41, or 53.9%, of the 76 contests they have been chosen as favorites in this season.
• Houston has a record of 31-27 when favored by -120 or more this year.
• The Astros and their opponents have gone over in 46 of their 110 games with a total set by sportsbooks this season.
• The Astros have posted a record of 55-55-0 against the spread this season.
• The Red Sox are 18-21 in games they were the underdog on the moneyline (winning 46.2% of those games).
• Boston has a record of 15-15 when it has played as a moneyline underdog with odds of +102 or longer (50%).
• The Red Sox have combined with opponents to hit the over on the total 51 times this season for a 51-55-5 record against the over/under.
• The Red Sox have gone 62-49-0 ATS this season.

Astros Player Leaders

• Jose Altuve has an OPS of .801, fueled by an OBP of .342 and a team-best slugging percentage of .459 this season. He has a .280 batting average.
• Among all qualifying batters in MLB, he is 32nd in batting average, 55th in on-base percentage, and 57th in slugging.
• Jeremy Pena leads the Astros in OBP (.381) and total hits (105) this season. He's batting .326 while slugging .491.
• He ranks second in batting average, eighth in on-base percentage and 25th in slugging among qualifying hitters.
• Yainer Diaz is batting .254 with a .420 slugging percentage and 45 RBI this year.
• Diaz brings a four-game hitting streak into this matchup. In his last five games he is hitting .421 with a double, two home runs, a walk and five RBIs.
• Christian Walker has 15 home runs, 58 RBI and a batting average of .238 this season.
• Walker takes a two-game hitting streak into this game. During his last five outings he is hitting .333 with a double, two home runs, two walks and five RBIs.

Red Sox Player Leaders

• Jarren Duran has a team-best OBP (.329) and slugging percentage (.457), and leads the Red Sox in hits (117, while batting .262).
• He ranks 70th in batting average, 75th in on-base percentage and 58th in slugging percentage among all qualifying hitters in MLB.
• Ceddanne Rafaela is hitting .261 with 23 doubles, three triples, 14 home runs and 17 walks. He's slugging .453 with an on-base percentage of .299.
• He ranks 74th in batting average, 137th in on-base percentage and 64th in slugging percentage in MLB.
• Trevor Story is batting .254 with 19 doubles, 18 home runs and 22 walks.
• Wilyer Abreu is batting .247 with 13 doubles, 20 home runs and 32 walks.

Astros vs Red Sox Head to Head

• 8/2/2025: 7-3 BOS (Favorite: Red Sox, Spread: -1.5, Total: 9.5, Favorite Moneyline: -134, Underdog Moneyline: +116)
• 8/1/2025: 2-1 BOS (Favorite: Astros, Spread: -1.5, Total: 8, Favorite Moneyline: -126, Underdog Moneyline: +108)
• 8/21/2024: 4-1 BOS (Favorite: Astros, Spread: -1.5, Total: 8.5, Favorite Moneyline: -138, Underdog Moneyline: +118)
• 8/20/2024: 6-5 BOS (Favorite: Astros, Spread: -1.5, Total: 8.5, Favorite Moneyline: -112, Underdog Moneyline: -104)
• 8/19/2024: 5-4 HOU (Favorite: Astros, Spread: -1.5, Total: 8, Favorite Moneyline: -146, Underdog Moneyline: +124)
• 8/11/2024: 10-2 HOU (Favorite: Astros, Spread: -1.5, Total: 10.5, Favorite Moneyline: -138, Underdog Moneyline: +118)
• 8/10/2024: 5-4 HOU (Favorite: Red Sox, Spread: -1.5, Total: 10.5, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 8/9/2024: 8-4 HOU (Favorite: Red Sox, Spread: -1.5, Total: 9.5, Favorite Moneyline: -136, Underdog Moneyline: +116)
• 8/30/2023: 7-4 HOU (Favorite: Astros, Spread: -1.5, Total: 10, Favorite Moneyline: -132, Underdog Moneyline: +112)
• 8/29/2023: 6-2 HOU (Favorite: Red Sox, Spread: -1.5, Total: 10.5, Favorite Moneyline: -120, Underdog Moneyline: +102)

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