Astros vs. Mariners Dunkel MLB Picks, Predictions and Prop Bets - Aug. 15

The Houston Astros and Seattle Mariners square off on Saturday at 7:10 p.m. ET, at Daikin Park. Hayden Wesneski (2-0, 3.86 ERA) will start for the Astros, who are 63-60 this season and first in the AL West. Emerson Hancock (6-7, 3.35 ERA) is expected to start for the Mariners, who are 57-66 and third in the AL West.

The Astros are moderate favorites on the moneyline (-123) at home over the Mariners (+108). The contest has a total set at 8.

Astros vs. Mariners Odds, Game Time

• Game day: Saturday, August 15, 2026
• Game time: 7:10 p.m. ET
• Location: Houston, Texas
• Stadium: Daikin Park
• Favorite: Astros (-123)
• Underdog: Mariners (+108)
• Over/under: 8

How to Watch Astros vs. Mariners

• TV Channel: SCHN and SEAM
• Live Stream: Fubo (Watch for free)

Bet now on FanDuel Sportsbook!

Astros vs. Mariners: Betting the Moneyline

• The Astros have a 25-24 record in games they were listed as the moneyline favorite (winning 51% of those games).
• Seattle has come away with seven wins in the 22 contests it has been listed as the underdogs in this season.
• Houston is 19-20 this season when entering a game favored by -123 or more on the moneyline.
• The Mariners have a mark of 3-5 in contests where sportsbooks favor them by +108 or worse on the moneyline.
• The implied moneyline probablility in this matchup gives the Astros a 55.2% chance to win.
• The Mariners have an implied victory probability of 48.1% according to the moneyline set for this matchup.

Astros vs. Mariners: Betting the Spread & Total

• The Astros have combined with opponents to go over the total 65 times this season for a 65-51-7 record against the over/under.
• Games involving Seattle have gone over the total set by bookmakers in 59 of 123 chances this season.
• The Astros have gone 64-59-0 ATS this season.
• In 123 games with a line this season, the Mariners have a mark of 44-79-0 against the spread.