Astros vs Tigers Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 20

Odds updated as of 9:12 p.m.

MLB action on Wednesday includes the Houston Astros playing the Detroit Tigers.

All the information 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 Tigers Game Info

• Houston Astros (69-56) vs. Detroit Tigers (74-53)
• Date: Wednesday, August 20, 2025
• Time: 1:10 p.m. ET
• Venue: Comerica Park -- Detroit, Michigan
• Coverage: MLB Network, FDSDET, and SCHN

Astros vs Tigers Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: HOU: (-130) | DET: (+110)
• Spread: HOU: -1.5 (+132) | DET: +1.5 (-160)
• Total: 8 -- Over: (-115) | Under: (-105)

Astros vs Tigers Probable Starting Pitchers

Probable Pitchers: Framber Valdez (Astros) - 11-6, 3.01 ERA vs Charlie Morton (Tigers) - 8-10, 5.20 ERA

This contest's pitching matchup is set, as the Astros will send Framber Valdez (11-6) to the mound, while Charlie Morton (8-10) will answer the bell for the Tigers. Valdez and his team have a record of 10-13-0 against the spread when he starts. Valdez's team has a record of 11-8 this season when he starts and they are the favorite on the moneyline. When Morton starts, the Tigers are 7-12-0 against the spread. The Tigers are 5-4 in Morton's nine starts this season that they were the moneyline underdog.

Astros vs Tigers Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Astros win (51.9%)

Astros vs Tigers Moneyline

• Houston is a -130 favorite on the moneyline, while Detroit is a +110 underdog at home.

Astros vs Tigers Spread

• The Tigers are +1.5 on the spread (-160 to cover), and Houston is +132 to cover the runline.

Astros vs Tigers Over/Under

• A total of 8 runs has been set for the Astros-Tigers contest on Aug. 20, with the over available at -115 and the under at -105.

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Astros vs Tigers Betting Trends

• The Astros have yet to play a game this season while listed as the odds-on favorite.
• This season Houston has come away with a win 27 times in 50 chances when named as a favorite of at least -130 on the moneyline.
• This will be the first contest this season the Astros will play in a game with a total set by sportsbooks
• The Astros have yet play a game with a spread this season.
• The Tigers have not been the moneyline underdog so far this season.
• When it has played as a moneyline underdog with odds of +110 or longer, Detroit has a 6-10 record (winning just 37.5% of its games).
• Oddsmakers have not set a total in any of the Tigers' games yet this season.
• The Tigers have not had a run line set for a matchup this season.

Astros Player Leaders

• Jose Altuve leads Houston in slugging percentage (.467) thanks to 41 extra-base hits. He has a .281 batting average and an on-base percentage of .345.
• Among qualifying hitters, he ranks 27th in batting average, his on-base percentage ranks 50th, and he is 48th in slugging.
• Altuve hopes to build on a three-game hitting streak in this matchup. During his last five outings he is batting .167 with a home run, two walks and an RBI.
• Jeremy Pena leads the Astros in OBP (.366) and total hits (115) this season. He's batting .310 while slugging .480.
• Among all qualifying hitters, he ranks fourth in batting average, 20th in on-base percentage and 32nd in slugging percentage.
• Yainer Diaz is batting .252 with a .414 slugging percentage and 53 RBI this year.
• Carlos Correa has nine home runs, 39 RBI and a batting average of .278 this season.
• Correa has safely hit in three games in a row. During his last five outings he is batting .222 with a double and an RBI.

Tigers Player Leaders

• Gleyber Torres has accumulated a team-best .358 on-base percentage. He's batting .259 and slugging .399.
• Including all the qualified players in the big leagues, his batting average places him 81st, his on-base percentage ranks 30th, and he is 108th in slugging.
• Spencer Torkelson is batting .243 with 24 doubles, 26 home runs and 56 walks. He's slugging .477 with an on-base percentage of .338.
• Including all qualifying hitters, his batting average puts him 116th, his on-base percentage is 64th, and he is 35th in slugging.
• Riley Greene has racked up a team-high slugging percentage (.507) and leads the Tigers in hits (126).
• Zach McKinstry is batting .258 with 18 doubles, eight triples, 10 home runs and 41 walks.

Astros vs Tigers Head to Head

• 8/18/2025: 10-0 DET (Favorite: Tigers, Spread: -1.5, Total: 8, Favorite Moneyline: -152, Underdog Moneyline: +128)
• 4/30/2025: 7-4 DET (Favorite: Astros, Spread: -1.5, Total: 8, Favorite Moneyline: -120, Underdog Moneyline: +102)
• 4/29/2025: 6-4 HOU (Favorite: Astros, Spread: -1.5, Total: 8, Favorite Moneyline: -118, Underdog Moneyline: -100)
• 4/28/2025: 8-5 HOU (Favorite: Astros, Spread: -1.5, Total: 7.5, Favorite Moneyline: -118, Underdog Moneyline: -100)
• 10/2/2024: 5-2 DET (Favorite: Astros, Spread: -1.5, Total: 7.5, Favorite Moneyline: -190, Underdog Moneyline: +160)
• 10/1/2024: 3-1 DET (Favorite: Astros, Spread: -1.5, Total: 6.5, Favorite Moneyline: -142, Underdog Moneyline: +120)
• 6/16/2024: 4-1 HOU (Favorite: Astros, Spread: -1.5, Total: 8, Favorite Moneyline: -166, Underdog Moneyline: +140)
• 6/15/2024: 13-5 DET (Favorite: Astros, Spread: -1.5, Total: 7.5, Favorite Moneyline: -118, Underdog Moneyline: -100)
• 6/14/2024: 4-0 HOU (Favorite: Astros, Spread: -1.5, Total: 7, Favorite Moneyline: -118, Underdog Moneyline: -100)
• 5/12/2024: 9-3 HOU (Favorite: Tigers, Spread: -1.5, Total: 7.5, Favorite Moneyline: -116, Underdog Moneyline: -102)

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