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

Odds updated as of 11:11 a.m.

The MLB's Sunday slate includes the Houston Astros facing the Boston Red Sox.

All the info you need to make smart wagers on this game at FanDuel Sportsbook can be found below. Check out all of the latest MLB betting lines here.

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: (-126) | BOS: (+108)
• Spread: HOU: -1.5 (+132) | BOS: +1.5 (-160)
• Total: 8 -- Over: (-118) | Under: (-104)

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 Astros will give the nod to Framber Valdez (11-4) versus the Red Sox and Lucas Giolito (7-2). When Valdez starts, his team is 10-10-0 against the spread this season. Valdez's team has been victorious in 64.7% of the games he's started as the moneyline favorite with a record of 11-6. The Red Sox have an 11-5-0 ATS record in Giolito's 16 starts that had a set spread. The Red Sox are 5-3 in Giolito's eight starts this season that 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 (57%)

Astros vs Red Sox Moneyline

• Looking at the moneyline for Red Sox-Astros, Boston is the underdog at +108, and Houston is -126 playing on the road.

Astros vs Red Sox Spread

• The Astros are 1.5-run road favorites on the runline against the Red Sox. The Astros are +132 to cover, and the Red Sox are -160.

Astros vs Red Sox Over/Under

• The over/under for the Astros versus Red Sox contest on Aug. 3 has been set at 8, with -118 odds on the over and -104 odds on the under.

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Astros vs Red Sox Betting Trends

• The Astros have been chosen as favorites in 76 games this year and have walked away with the win 41 times (53.9%) in those games.
• This season Houston has come away with a win 26 times in 51 chances when named as a favorite of at least -126 on the moneyline.
• The Astros' games have gone over the total in 46 of their 110 opportunities.
• In 110 games with a line this season, the Astros have a mark of 55-55-0 against the spread.
• The Red Sox have won 18 of the 39 games they were the underdog on the moneyline this season (46.2%).
• Boston has a 12-13 record (winning 48% of its games) when it has played as a moneyline underdog of +108 or longer.
• The Red Sox have played in 111 games with an over/under set, and have combined with their opponents to go over the total 51 times (51-55-5).
• The Red Sox have gone 62-49-0 against the spread this season.

Astros Player Leaders

• Jose Altuve leads Houston with a slugging percentage of .459, fueled by 36 extra-base hits. He has a .280 batting average and an on-base percentage of .342.
• Among qualifying hitters, he ranks 31st in batting average, his on-base percentage ranks 55th, and he is 54th in slugging.
• Jeremy Pena leads Houston with 105 hits and an OBP of .381 this season. He's batting .326 and slugging .491.
• Among qualifying batters, his batting average places him second, his on-base percentage eighth, and his slugging percentage 25th.
• Yainer Diaz is batting .254 with a .420 slugging percentage and 45 RBI this year.
• Diaz brings a four-game hitting streak into this game. In his last five games he is hitting .421 with a double, two home runs, a walk and five RBIs.
• Christian Walker is batting .238 with a .301 OBP and 58 RBI for Houston this season.
• Walker takes a two-game hitting streak into this matchup. In his last five games he is batting .333 with a double, two home runs, two walks and five RBIs.

Red Sox Player Leaders

• Jarren Duran has accumulated 117 hits with a .329 on-base percentage and a .457 slugging percentage, all club-highs for the Red Sox. He's batting .262.
• He is 70th in batting average, 75th in on-base percentage and 56th in slugging percentage among all qualifying hitters in MLB.
• Ceddanne Rafaela has 23 doubles, three triples, 14 home runs and 17 walks while batting .261. He's slugging .453 with an on-base percentage of .299.
• Including all qualified players, he is 74th in batting average, 136th in on-base percentage and 64th in slugging percentage.
• Trevor Story has 19 doubles, 18 home runs and 22 walks while hitting .254.
• 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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