• The Mariners are +105 favorites vs the Astros
• Mariners vs Astros Over / Under today: 8.5 Runs
• Mariners / Astros TV Channel: MRTV | SCHN

The Seattle Mariners (+105) visit Daikin Park to take on the Houston Astros (-125) on August 15, 2026. First pitch is scheduled for 7:10 pm in Houston, TX.

This season, the Mariners are 57-66 against the spread (ATS), while the Astros are 63-60 ATS.

Mariners vs Astros Starting Pitchers Today:

• Mariners starting pitcher: Emerson Hancock 6-7, 3.36 ERA
• Astros starting pitcher: Hayden Wesneski 2-0, 3.86 ERA

Mariners vs. Astros Odds, Run Line, Over/Under & Moneyline

Mariners vs Astros Prediction for Today’s Game

Based on recent trends the model predicts the Astros will win Saturday‘s MLB game with 54.1% confidence, factoring in game simulations, recent player performances, starting pitchers and injuries.

Bet now on Mariners vs Astros and all games with BetMGM

We’ve highlighted some favorite MLB player prop bets for Mariners players for Saturday‘s game, looking at profitable historical betting trends:

Best Mariners Player Prop Bets Today:

• Cal Raleigh has hit the Runs Under in 22 of his last 25 games (+16.90 Units / 39% ROI)
• Randy Arozarena has hit the Home Runs Over in 4 of his last 9 away games (+16.60 Units / 184% ROI)
• Cal Raleigh has hit the Hits Runs and RBIs Under in 20 of his last 25 away games (+13.55 Units / 40% ROI)
• Cal Raleigh has hit the RBIs Under in 21 of his last 25 away games (+12.30 Units / 23% ROI)
• Josh Naylor has hit the Hits Over in 17 of his last 20 away games (+10.90 Units / 26% ROI)

And here are some favorite MLB player prop bets for Astros players for Saturday‘s game, looking at profitable historical betting trends:

Best Astros Player Prop Best Bets Today:

• Jeremy Pena has hit the Home Runs Over in 4 of his last 10 games at home (+16.80 Units / 168% ROI)
• Jeremy Pena has hit the Hits Under in his last 10 games (+12.55 Units / 67% ROI)
• Taylor Trammell has hit the Singles Over in 14 of his last 25 games at home (+11.50 Units / 46% ROI)
• Yordan Alvarez has hit the Hits Runs and RBIs Over in 15 of his last 20 games at home (+10.70 Units / 48% ROI)
• Daulton Varsho has hit the RBIs Under in 21 of his last 25 games at home (+10.70 Units / 18% ROI)

Mariners Best Bets Today:

• The Seattle Mariners have hit the Team Total Under in 32 of their last 50 games (+13.40 Units / 23% ROI)
• The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Under in 32 of their last 50 games (+12.80 Units / 21% ROI)
• The Seattle Mariners have hit the Game Total Over in 24 of their last 40 away games (+9.00 Units / 21% ROI)
• The Seattle Mariners have covered the 1st Five Innings (F5) Run Line in 3 of their last 5 away games (+0.35 Units / 5% ROI)

Astros Best Bets Today:

• The Houston Astros have covered the Run Line in 15 of their last 22 games (+11.55 Units / 43% ROI)
• The Houston Astros have hit the 1st Five Innings (F5) Team Total Over in 9 of their last 10 games at home (+8.25 Units / 71% ROI)
• The Houston Astros have hit the Moneyline in 16 of their last 22 games (+7.45 Units / 26% ROI)
• The Houston Astros have hit the 1st Five Innings (F5) Moneyline in 8 of their last 10 games at home (+6.75 Units / 49% ROI)
• The Houston Astros have covered the 1st Five Innings (F5) Run Line in 13 of their last 20 games at home (+6.75 Units / 32% ROI)

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 45-77 against the Run Line (-26.95 Units / -19.62% ROI).

• 57-66 when betting on the Moneyline for -25.3 Units / -15.32% ROI
• 60-56 when betting on the total runs Over for -1.45 Units / -1.07% ROI
• 56-60 when betting on the total runs Under for -9.7 Units / -7.19% ROI

Astros Against the Spread (ATS) Record

Against the spread this season, the Astros are 63-60 against the Run Line (-1.45 Units / -0.88% ROI).

• 63-60 when betting on the Moneyline for -2.9 Units / -2.01% ROI
• 65-51 when betting on the total runs Over for +8.05 Units / 5.9% ROI
• 51-65 when betting on the total runs Under for -20.45 Units / -15.23% ROI

Astros vs Mariners Home Run Prop Bets Today

Astros vs Mariners Total Hits Prop Bets Today

Astros vs Mariners Strikeout Prop Bets Today

Mariners Keys to the Game vs. the Astros

The Mariners are just 2-6 (.250) when allowing 5 or more extra base hits this season — tied for lowest in MLB.

The Mariners are just 2-7 (.222) this season — tied for lowest in MLB.

The Mariners are just 2-6 (.250) when allowing 5 or more extra base hits since the 2025 season — tied for lowest in MLB.

The Mariners are just 2-7 (.222) since the 2025 season — tied for lowest in MLB.

Astros Keys to the Game vs. the Mariners

The Astros were just 0-56 (.000) when trailing entering the 9th inning in the 2024 season — tied for lowest in MLB; League Avg: .050.

The Astros were just 5-13 (.278) when tied entering the 8th inning in the 2024 season — 3rd lowest in MLB; League Avg: .500.

The Astros were 56-7 (.889) when they scored 5 or more runs in the 2025 season — 3rd best in MLB; League Avg: .797.

The Astros were 41-8 (.837) when they hit 2 or more home runs in the 2025 season — best in MLB; League Avg: .699.

Mariners Hitting Stats & Trends

Mariners hitters are slugging just .477 on the first pitch of at-bats this season — lowest in MLB.

The Mariners are batting just .230 with runners on base this season — 2nd lowest in MLB.

The Mariners are batting just .218 against LHP this season — 2nd lowest in MLB.

Mariners hitters have 74 extra-base hits out of 271 total hits (just 27%) against LHP this season — lowest in MLB.

Astros Hitting Stats & Trends

Astros hitters have struck out in just 20% of their PA’s against LHP this season — 5th best in MLB.

The Astros are batting just .232 against LHP this season — tied for 5th lowest in MLB.

Astros hitters have drawn walks in 14% of their PA’s with runners in scoring position this season — best in MLB.

Astros hitters have 38 extra-base hits out of 141 total hits (just 27%) when facing the starting pitcher for the 3rd time in a game this season — 2nd lowest in MLB.

Mariners Pitching Stats & Trends

Mariners pitchers have walked 7% of batters this season — best in MLB.

Mariners pitchers have a first-pitch strike rate of 66% this season — highest in MLB.

The longest HR allowed by the Mariners pitchers this season traveled 424.0 feet — — 2nd longest in MLB

Mariners pitchers have thrown at least two strikes in their first three pitches to 69% of opposing batters this season — highest in MLB.

Astros Pitching Stats & Trends

Astros pitchers have walked 12% of batters when facing the leadoff batter in the inning this season — highest in MLB.

Opponents have a groundball rate of just 39% against Astros pitchers this season — 2nd lowest in MLB.

Astros pitchers have walked 11% of batters this season — 2nd highest in MLB.

The Astros have allowed 3.11 runs per game (383/123) in the first 5 innings this season — 3rd highest in MLB.

More MLB Reading:

• Home Run Predictions Today
• Best NRFI Bets Today
• Strikeout Props Today
• MLB Starting Pitchers Today

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