Tigers vs Astros Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 18

Odds updated as of 6:13 p.m.

The MLB slate on Monday includes the Detroit Tigers taking on the Houston Astros.

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

Tigers vs Astros Game Info

• Detroit Tigers (73-53) vs. Houston Astros (69-55)
• Date: Monday, August 18, 2025
• Time: 6:40 p.m. ET
• Venue: Comerica Park -- Detroit, Michigan
• Coverage: MLB Network, FDSDET, and SCHN

Tigers vs Astros Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: DET: (-152) | HOU: (+128)
• Spread: DET: -1.5 (+130) | HOU: +1.5 (-156)
• Total: 8 -- Over: (-120) | Under: (-102)

Tigers vs Astros Probable Starting Pitchers

Probable Pitchers: Jack Flaherty (Tigers) - 6-12, 4.76 ERA vs Spencer Arrighetti (Astros) - 1-3, 6.38 ERA

The Tigers will give the ball to Jack Flaherty (6-12, 4.76 ERA), who is eyeing win No. 7 on the season, and the Astros will counter with Spencer Arrighetti (1-3, 6.38 ERA). Flaherty's team is 8-15-0 against the spread this season in his starts. When Flaherty starts a game and his team is the favorite on the moneyline, they have a record of 6-8. The Astros have failed to cover in each of the four games Arrighetti has started that had a spread set by oddsmakers. The Astros were the underdog on the moneyline for two Arrighetti starts this season -- they lost both.

Tigers vs Astros Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Tigers win (56.8%)

Tigers vs Astros Moneyline

• Detroit is a -152 favorite on the moneyline, while Houston is a +128 underdog on the road.

Tigers vs Astros Spread

• The Tigers are 1.5-run home favorites on the runline against the Astros. The Tigers are +130 to cover, and the Astros are -156.

Tigers vs Astros Over/Under

• Tigers versus Astros on Aug. 18 has an over/under of 8 runs, with the odds on the over -120 and the under set at -102.

Bet on Detroit Tigers vs. Houston Astros on FanDuel today!

Tigers vs Astros Betting Trends

• The Tigers have won in 51, or 63%, of the 81 contests they have been named as odds-on favorites in this year.
• Detroit has not played a game this season with better moneyline odds than -152.
• The Tigers' games have gone over the total in 59 of their 120 opportunities.
• In 120 games with a line this season, the Tigers have a mark of 58-62-0 against the spread.
• The Astros have won 61.5% of the games this season they were the moneyline underdog (24-15).
• Houston has never played a game this season with moneyline odds of +128 or longer.
• The Astros have had an over/under set by bookmakers 123 times, and have combined with opponents to go over the total in 55 of those games (55-64-4).
• The Astros have covered 49.6% of their games this season, going 61-62-0 ATS.

Tigers Player Leaders

• Gleyber Torres leads Detroit in OBP (.357) this season, fueled by 106 hits. He has a .261 batting average and a slugging percentage of .401.
• Among all qualified hitters in the majors, he is 69th in batting average, 32nd in on-base percentage, and 105th in slugging.
• Spencer Torkelson has 24 doubles, 26 home runs and 54 walks. He's batting .242 and slugging .477 with an on-base percentage of .335.
• Among all qualified hitters, he is 119th in batting average, 69th in on-base percentage and 36th in slugging percentage.
• Riley Greene leads Detroit with 125 hits and a team-best slugging percentage of .503.
• Zach McKinstry has been key for Detroit with 95 hits, an OBP of .336 plus a slugging percentage of .432.

Astros Player Leaders

• Jose Altuve has a team-high .467 slugging percentage. He's batting .280 with an on-base percentage of .345.
• He ranks 28th in batting average, 50th in on-base percentage and 44th in slugging percentage among all qualifying hitters in the majors.
• Jeremy Pena has collected 115 hits with a .370 OBP to pace his team in both. He has a batting average of .313 while slugging .485.
• He is third in batting average, 14th in on-base percentage and 29th in slugging percentage in the big leagues.
• Yainer Diaz is batting .254 with 16 doubles, a triple, 17 home runs and 16 walks.
• Carlos Correa is batting .277 with 21 doubles, nine home runs and 31 walks.

Tigers vs Astros Head to Head

• 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)
• 5/11/2024: 8-2 DET (Favorite: Tigers, Spread: -1.5, Total: 7.5, Favorite Moneyline: -154, Underdog Moneyline: +130)

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