• The Astros are -140 favorites vs the Mariners
• Mariners vs Astros Over / Under today: 7.5 Runs
• Mariners / Astros TV Channel: NBC | PEAC

The Seattle Mariners (+115) visit Daikin Park to take on the Houston Astros (-140) on August 16, 2026. First pitch is scheduled for 7:20 pm in Houston, TX.

This season, the Mariners are 58-66 against the spread (ATS), while the Astros are 63-61 ATS.

Mariners vs Astros Starting Pitchers Today:

• Mariners starting pitcher: Bryan Woo 8-8, 4.16 ERA
• Astros starting pitcher: Hunter Brown 3-2, 3.68 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 Sunday‘s MLB game with 54.4% 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 Sunday‘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 10 away games (+15.60 Units / 156% 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 Sunday‘s game, looking at profitable historical betting trends:

Best Astros Player Prop Best Bets Today:

• Isaac Paredes has hit the Home Runs Over in 4 of his last 9 games at home (+14.70 Units / 163% ROI)
• Jeremy Pena has hit the Hits Under in his last 10 games (+12.55 Units / 66% ROI)
• Isaac Paredes has hit the Total Bases Over in 17 of his last 25 games at home (+12.05 Units / 39% ROI)
• Yordan Alvarez has hit the Walks Over in 16 of his last 20 games (+11.75 Units / 47% 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 31 of their last 50 games (+11.30 Units / 20% ROI)
• The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Under in 31 of their last 50 games (+10.20 Units / 17% ROI)
• The Seattle Mariners have hit the Game Total Over in 22 of their last 35 away games (+10.15 Units / 26% ROI)
• The Seattle Mariners have covered the 1st Five Innings (F5) Run Line in 4 of their last 5 games (+2.60 Units / 40% ROI)
• The Seattle Mariners have hit the 1st Five Innings (F5) Moneyline in 2 of their last 5 games (+1.35 Units / 27% ROI)

Astros Best Bets Today:

• The Houston Astros have covered the Run Line in 29 of their last 50 games (+10.75 Units / 17% ROI)
• The Houston Astros have hit the Game Total Over in 23 of their last 40 games (+7.75 Units / 18% ROI)
• The Houston Astros have hit the 1st Five Innings (F5) Team Total Over in 9 of their last 11 games at home (+7.25 Units / 58% ROI)
• The Houston Astros have hit the Team Total Over in 9 of their last 11 games at home (+6.60 Units / 50% ROI)
• The Houston Astros have hit the Moneyline in 16 of their last 23 games (+6.20 Units / 21% ROI)

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 46-77 against the Run Line (-25.95 Units / -18.63% ROI).

• 58-66 when betting on the Moneyline for -24.25 Units / -14.6% ROI
• 61-56 when betting on the total runs Over for -0.45 Units / -0.33% ROI
• 56-61 when betting on the total runs Under for -10.8 Units / -7.94% ROI

Astros Against the Spread (ATS) Record

Against the spread this season, the Astros are 63-61 against the Run Line (-2.45 Units / -1.48% ROI).

• 63-61 when betting on the Moneyline for -4.15 Units / -2.85% ROI
• 66-51 when betting on the total runs Over for +9.05 Units / 6.58% ROI
• 51-66 when betting on the total runs Under for -21.55 Units / -15.92% 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 3-6 (.333) when allowing 5 or more extra base hits this season — tied for 2nd lowest in MLB.

The Mariners are just 3-7 (.300) this season — tied for 2nd lowest in MLB.

The Mariners are just 3-7 (.300) since the 2025 season — tied for 2nd lowest in MLB.

The Mariners are just 3-6 (.333) when allowing 5 or more extra base hits since the 2025 season — tied for 2nd 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 10-5 (.667) when tied entering the 8th inning in the 2025 season — tied for 3rd best in MLB; League Avg: .500.

Mariners Hitting Stats & Trends

The Mariners are batting just .218 against LHP this season — tied for lowest in MLB.

Mariners hitters are slugging just .343 against LHP this season — 2nd lowest in MLB.

Mariners hitters are slugging just .483 on the first pitch of at-bats this season — lowest in MLB.

Mariners hitters have an OPS of just .642 (1,415 PA’s) against LHP this season — 2nd 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.

Astros hitters have drawn walks in 13% of their PA’s with runners in scoring position this season — best in MLB.

The Astros are batting .269 when facing the starting pitcher for the 3rd time in a game this season — tied for 5th best in MLB.

The Astros are batting just .233 against LHP this season — tied for 5th 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.

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

Mariners pitchers have walked 6% of batters when facing the leadoff batter in the inning this season — best in MLB.

Astros Pitching Stats & Trends

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

Astros pitchers have walked 11% 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 allowed opponents to score in three different innings in 53% of their games 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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