Astros vs Mariners Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 16

Odds updated as of 7:11 p.m.

MLB action on Sunday includes the Houston Astros playing the Seattle Mariners.

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

Astros vs Mariners Game Info

• Houston Astros (63-61) vs. Seattle Mariners (58-66)
• Date: Sunday, August 16, 2026
• Time: 7:20 p.m. ET
• Venue: Daikin Park -- Houston, Texas
• Coverage: NBC/Peacock

Astros vs Mariners Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: HOU: (-124) | SEA: (+114)
• Spread: HOU: -1.5 (+176) | SEA: +1.5 (-215)
• Total: 8 -- Over: (-104) | Under: (-118)

Astros vs Mariners Probable Starting Pitchers

Probable Pitchers: Hunter Brown (Astros) - 3-2, 3.68 ERA vs Bryan Woo (Mariners) - 8-8, 4.15 ERA

The probable starters are Hunter Brown (3-2) for the Astros and Bryan Woo (8-8) for the Mariners. Brown's team is 6-6-0 against the spread in his starts this season. Brown's team has a record of 5-5 this season when he starts and they are the favorite on the moneyline. The Mariners have gone 10-13-0 against the spread when Woo starts. The Mariners were the moneyline underdog for four Woo starts this season -- they lost every game.

Astros vs Mariners Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (53.1%)

Astros vs Mariners Moneyline

• Looking at the moneyline for Mariners-Astros, Seattle is the underdog at +114, and Houston is -124 playing at home.

Astros vs Mariners Spread

• The Astros are 1.5-run home favorites on the runline against the Mariners. The Astros are +176 to cover, and the Mariners are -215.

Astros vs Mariners Over/Under

• An over/under of 8 has been set for Astros-Mariners on Aug. 16, with the over being -104 and the under -118.

Bet on Houston Astros vs. Seattle Mariners on FanDuel today!

Astros vs Mariners Betting Trends

• The Astros have come away with 26 wins in the 50 contests they have been listed as the favorites in this season.
• This season Houston has come away with a win 17 times in 36 chances when named as a favorite of at least -124 on the moneyline.
• The Astros and their opponents have hit the over in 67 of their 124 games with a total set by oddsmakers this season.
• The Astros have posted a record of 61-63-0 against the spread this season.
• The Mariners have compiled a 7-15 record in games they were listed as the moneyline underdog (winning 31.8% of those games).
• Seattle has gone 3-4 when it has played as a moneyline underdog with odds of +114 or longer (42.9%).
• In the 123 games bookmakers have set an over/under for the Mariners, they have combined with opponents to go over the total 60 times (60-57-6).
• The Mariners are 43-80-0 against the spread this season.

Astros Player Leaders

• Yordan Alvarez has 142 hits and an OBP of .436 to go with a slugging percentage of .622. All three of those stats lead Houston hitters this season. He has a .321 batting average, as well.
• He ranks first in batting average, first in on-base percentage, and first in slugging among qualifying hitters in the majors.
• Isaac Paredes has 21 doubles, a triple, 16 home runs and 46 walks. He's batting .260 and slugging .425 with an on-base percentage of .350.
• He is 64th in batting average, 45th in on-base percentage and 70th in slugging in MLB.
• Paredes heads into this game looking to extend his two-game hit streak. In his last five games he is hitting .429 with a double, a home run, a walk and seven RBIs.
• Christian Walker has collected 104 base hits, an OBP of .314 and a slugging percentage of .451 this season.
• Jeremy Pena is batting .288 with a .344 OBP and 39 RBI for Houston this season.
• Pena enters this matchup on a three-game hitting streak. In his last five games he is hitting .174 with two doubles and two RBIs.

Mariners Player Leaders

• Randy Arozarena is leading the Mariners with 118 hits. He's batting .275 and slugging .450 with an on-base percentage of .368.
• Including all the qualified hitters in the big leagues, his batting average ranks 32nd, his on-base percentage is 20th, and he is 47th in slugging.
• Josh Naylor's .375 slugging percentage paces his team. He has a batting average of .267 with an on-base percentage of .332.
• Including all qualifying hitters, he is 48th in batting average, 72nd in on-base percentage and 119th in slugging percentage.
• Julio Rodriguez is hitting .259 with 17 doubles, 19 home runs and 40 walks.
• Cole Young leads his team with a .407 slugging percentage.

Astros vs Mariners Head to Head

• 8/15/2026: 10-5 SEA (Favorite: Astros, Spread: -1.5, Total: 8.5, Favorite Moneyline: -120, Underdog Moneyline: +110)
• 8/14/2026: 10-7 HOU (Favorite: Astros, Spread: -1.5, Total: 8, Favorite Moneyline: -122, Underdog Moneyline: +112)
• 5/14/2026: 8-3 SEA (Favorite: Mariners, Spread: -1.5, Total: 9, Favorite Moneyline: -112, Underdog Moneyline: -104)
• 5/13/2026: 4-3 HOU (Favorite: Mariners, Spread: -1.5, Total: 9, Favorite Moneyline: -136, Underdog Moneyline: +116)
• 5/12/2026: 10-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -200, Underdog Moneyline: +168)
• 5/11/2026: 3-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -154, Underdog Moneyline: +130)
• 4/13/2026: 6-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -178, Underdog Moneyline: +150)
• 4/12/2026: 6-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -190, Underdog Moneyline: +160)
• 4/11/2026: 8-7 SEA (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -152, Underdog Moneyline: +128)
• 4/10/2026: 9-6 SEA (Favorite: Mariners, Spread: -1.5, Total: 8, Favorite Moneyline: -136, Underdog Moneyline: +116)

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