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

Odds updated as of 6:15 a.m.

The Sunday schedule in MLB includes a matchup between the Houston Astros and the Seattle Mariners.

Before you do any MLB betting on this game at FanDuel Sportsbook, here's everything 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: (-136) | SEA: (+116)
• Spread: HOU: -1.5 (+160) | SEA: +1.5 (-194)
• Total: 7.5 -- Over: (-124) | Under: (+102)

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 Astros will call on Hunter Brown (3-2) against the Mariners and Bryan Woo (8-8). Brown and his team are 6-6-0 ATS this season when he starts. Brown's team is 5-5 this season when he starts and they are the moneyline favorite. The Mariners have gone 10-13-0 ATS in Woo's 23 starts that had a set spread. The Mariners were the moneyline underdog for four Woo starts this season -- they lost every time.

Astros vs Mariners Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Astros win (50%)

Astros vs Mariners Moneyline

• The moneyline numbers for Astros vs. Mariners reveal Houston as the favorite (-136) and Seattle as the underdog (+116) on the road.

Astros vs Mariners Spread

• The Astros are hosting the Mariners and are favored by 1.5 runs (+160 to cover) on the runline. Seattle is -194 to cover.

Astros vs Mariners Over/Under

• Astros versus Mariners, on Aug. 16, has an over/under of 7.5, with the over being -124 and the under +102.

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

Astros vs Mariners Betting Trends

• The Astros have been favorites in 50 games this season and have come away with the win 26 times (52%) in those contests.
• This season Houston has been victorious nine times in 24 chances when named as a favorite of at least -136 on the moneyline.
• The Astros and their opponents have gone over in 67 of their 124 games with a total set by sportsbooks this season.
• The Astros have an against the spread record of 61-63-0 in 124 games with a line this season.
• The Mariners have won seven of the 22 games they were listed as the moneyline underdog this season (31.8%).
• When playing as a moneyline underdog with odds of +116 or longer, Seattle has a 3-3 record (winning 50% of its games).
• The Mariners have played in 123 games with an over/under set, and have combined with their opponents to go over the total 60 times (60-57-6).
• The Mariners have covered only 35% of their games this season, going 43-80-0 ATS.

Astros Player Leaders

• Yordan Alvarez leads Houston in OBP (.436), slugging percentage (.622) and total hits (142) this season. He has a .321 batting average.
• He ranks first in batting average, first in on-base percentage, and first in slugging among all qualified batters in baseball.
• Isaac Paredes is batting .260 with 21 doubles, a triple, 16 home runs and 46 walks, while slugging .425 with an on-base percentage of .350.
• He ranks 65th in batting average, 46th in on-base percentage and 71st in slugging among qualified batters.
• Paredes takes a two-game streak with at least one hit into this one. In his last five games he is batting .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 has 13 home runs, 39 RBI and a batting average of .288 this season.
• Pena enters this game on a three-game hitting streak. In his last five games he is batting .174 with two doubles and two RBIs.

Mariners Player Leaders

• Randy Arozarena has 118 hits, a team-best for the Mariners. He's batting .275 and slugging .450 with an on-base percentage of .368.
• He is 34th in batting average, 21st in on-base percentage and 47th in slugging percentage among all qualifying hitters in the big leagues.
• Josh Naylor paces his team with a .375 slugging percentage. He has a batting average of .267 with an on-base percentage of .332.
• He is currently 49th in batting average, 73rd in on-base percentage and 120th in slugging percentage among all qualified hitters.
• Julio Rodriguez is batting .259 with 17 doubles, 19 home runs and 40 walks.
• Cole Young is slugging .407 to lead his team.

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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