Mariners vs Astros Prediction, Odds & Player Prop Bets Today – MLB, Sep 23

Houston Astros Alex Bregman (2) and Houston Astros Yuli Gurriel celebrate after Game 2 of baseball's American League Championship Series between the Houston Astros and the New York Yankees, Thursday, Oct. 20, 2022, in Houston. The Houston Astros won 3-2.
(AP Photo/Eric Gay)
  • The Astros are -140 favorites vs the Mariners
  • Mariners vs Astros Over / Under today: 8 Runs
  • Mariners / Astros TV Channel: SCHN | RTNW | ESPN+ | MLBN

The Seattle Mariners (+120) visit Minute Maid Park to take on the Houston Astros (-140) on Monday, September 23, 2024. First pitch is scheduled for 8:10pm EDT in Houston, TX.

This season, the Mariners are 80-76 against the spread (ATS), while the Astros are 79-77 ATS.

Mariners vs Astros Starting Pitchers Today:

  • Mariners starting pitcher: Bryce Miller 11-8, 3.08 ERA
  • Astros starting pitcher: Hunter Brown 11-8, 3.58 ERA

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

SpreadOver / UnderMoneyline
Mariners+1.5 -190O 8 -120+120
Astros -1.5 +155U 8 +100-140

Mariners vs Astros Prediction for Today’s Game

Based on recent trends the model predicts the Astros will win Monday‘s MLB game with 54.6% confidence, factoring in game simulations, recent player performances, starting pitchers and injuries.


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

Best Mariners Player Prop Bets Today:

  • Luke Raley has hit the Home Runs Over in 10 of his last 31 games (+30.50 Units / 98% ROI)
  • Bryce Miller has hit the Earned Runs Under in 21 of his last 29 games (+12.55 Units / 35% ROI)
  • Julio Rodriguez has hit the Singles Over in 19 of his last 25 away games (+11.70 Units / 37% ROI)
  • Justin Turner has hit the Runs Over in 12 of his last 20 games (+11.10 Units / 56% ROI)
  • Randy Arozarena has hit the Walks Over in his last 7 games (+10.55 Units / 151% ROI)

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

Best Astros Player Prop Best Bets Today:

  • Yainer Diaz has hit the Hits Over in 16 of his last 25 games at home (+17.35 Units / 59% ROI)
  • Hunter Brown has hit the Pitching Outs Over in 18 of his last 21 games (+15.35 Units / 53% ROI)
  • Hunter Brown has hit the Earned Runs Under in 17 of his last 21 games (+13.10 Units / 48% ROI)
  • Yainer Diaz has hit the Hits Runs and RBIs Over in 16 of his last 19 games at home (+12.75 Units / 51% ROI)
  • Yainer Diaz has hit the Runs Over in 16 of his last 25 games at home (+11.30 Units / 45% ROI)
  • The Seattle Mariners have hit the Game Total Over in 40 of their last 62 away games (+20.25 Units / 29% ROI)
  • The Seattle Mariners have covered the 1st Five Innings (F5) Run Line in 30 of their last 50 away games (+8.05 Units / 13% ROI)
  • The Seattle Mariners have covered the Run Line in 6 of their last 8 away games (+5.75 Units / 63% ROI)
  • The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Over in 17 of their last 27 games (+5.55 Units / 16% ROI)
  • The Seattle Mariners have hit the Moneyline in 11 of their last 17 games (+3.55 Units / 16% ROI)
  • The Houston Astros have hit the Game Total Under in 80 of their last 139 games (+18.00 Units / 12% ROI)
  • The Houston Astros have covered the Run Line in 56 of their last 98 games (+16.50 Units / 14% ROI)
  • The Houston Astros have hit the Moneyline in 52 of their last 83 games (+10.35 Units / 8% ROI)
  • The Houston Astros have hit the Team Total Over in 34 of their last 56 games at home (+9.85 Units / 15% ROI)
  • The Houston Astros have covered the 1st Five Innings (F5) Run Line in 20 of their last 30 games (+7.95 Units / 21% ROI)

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 68-88 against the Run Line (-23.8 Units / -12.18% ROI).

  • 80-76 when betting on the Moneyline for -16.05 Units / -7.78% ROI
  • 72-75 when betting on the total runs Over for -9.7 Units / -5.69% ROI
  • 75-72 when betting on the total runs Under for -4 Units / -2.34% ROI

Astros Against the Spread (ATS) Record

Against the spread this season, the Astros are 79-77 against the Run Line (+3.75 Units / 1.96% ROI).

  • 85-71 when betting on the Moneyline for -9.65 Units / -4.18% ROI
  • 64-88 when betting on the total runs Over for -32.15 Units / -18.85% ROI
  • 88-64 when betting on the total runs Under for +17.15 Units / 9.92% ROI

Astros vs Mariners Home Run Prop Bets Today

Over Under
Kyle Tucker (HOU) 0.5 +350 0.5 -450
Cal Raleigh (SEA) 0.5 +375 0.5 -500
Alex Bregman (HOU) 0.5 +525 0.5 -750
Yainer Diaz (HOU) 0.5 +575 0.5 -800
Jorge Polanco (SEA) 0.5 +575 0.5 -900

Astros vs Mariners Total Hits Prop Bets Today

Over Under
Jose Altuve (HOU) 0.5 -250 0.5 +185
Jeremy Pena (HOU) 0.5 -250 0.5 +185
Alex Bregman (HOU) 0.5 -250 0.5 +185
Julio Rodriguez (SEA) 0.5 -250 0.5 +185
Victor Robles (SEA) 0.5 -225 0.5 +170

Astros vs Mariners RBI Prop Bets Today

Over Under
Kyle Tucker (HOU) 0.5 +155 0.5 -210
Yainer Diaz (HOU) 0.5 +165 0.5 -225
Cal Raleigh (SEA) 0.5 +165 0.5 -225
Julio Rodriguez (SEA) 0.5 +170 0.5 -225
Alex Bregman (HOU) 0.5 +175 0.5 -250

Astros vs Mariners Strikeout Prop Bets Today

Over Under
Hunter Brown (HOU) 6.5 -105 6.5 -120
Bryce Miller (SEA) 4.5 +100 4.5 -130

Bryce Miller has allowed an OBP of just .232 (310 PA’s) against right-handed batters this season — 3rd best among qualified SPs in MLB; League Avg: .288 — 96th Percentile.

Bryce Miller allowed a batting average of just .200 vs right-handed batters (eighth best)– 94th Percentile and .303 vs left-handed batters last season (tied for sixth worst among non-qualified SPs)– seventh Percentile.

Bryce Miller has allowed an OBP of just .241 (270 PA’s) when going through the lineup the second time in a game this season — 2nd best among qualified SPs in MLB; League Avg: .289 — 98th Percentile.

Bryce Miller allowed a just .315 SLG vs right-handed batters (ninth best)– 93rd Percentile and .558 vs left-handed batters last season (sixth worst among non-qualified SPs)– sixth Percentile.

Astros Starting Pitcher Stats & Trends

Opponents have a Hard-Hit Rate of just 29% (67/230) against Hunter Brown on fastballs this season — best among qualified SPs in MLB; League Avg: 45% — 100th Percentile.

Hunter Brown has a strike rate of just 57% when ahead in the count (tied for fifth lowest)– 10th Percentile and 73% when behind in the count this season (seventh highest among qualified SPs)– 88th Percentile.

Hunter Brown has allowed an average Exit Velocity of 86.1 MPH (454 batted balls) this season — tied for 2nd best among qualified SPs in MLB; League Avg: 88.6 — 98th Percentile.

Opponents are hitting just .128 (45-for-352) against Hunter Brown with two-strikes this season — 5th best among qualified SPs in MLB; League Avg: .163 — 92nd Percentile.

Mariners Keys to the Game vs. the Astros

The Mariners are 143-3 (.979) when leading entering the 9th inning since the 2023 season — 2nd best in MLB; League Avg: .949.

The Mariners are just 7-13 (.350) when tied entering the 8th inning this season — tied for 4th lowest in MLB; League Avg: .500.

The Mariners are 212-4 (.981) when leading entering the 9th inning since the 2022 season — best in MLB; League Avg: .951.

The Mariners are 53-5 (.914) when scoring 5 or more runs this season — best in MLB; League Avg: .803.

Astros Keys to the Game vs. the Mariners

The Astros are just 0-53 (.000) when trailing entering the 9th inning this season — tied for lowest in MLB; League Avg: .051.

The Astros are just 4-10 (.286) after a loss as underdogs this season — 2nd lowest in MLB; League Avg: .434.

The Astros are just 12-23 (.343) when tied entering the 8th inning since the 2023 season — 2nd lowest in MLB; League Avg: .500.

The Astros are 129-37 (.777) when they’ve hit 2 or more home runs since the 2022 season — tied for 2nd best in MLB; League Avg: .702.

The Mariners are batting just .225 when facing the starting pitcher for the 3rd time in a game since last season — lowest in MLB; League Avg: .265.

The Mariners are batting just .202 when facing the starting pitcher for the 3rd time in a game this season — lowest in MLB; League Avg: .262.

The Mariners are batting just .213 against LHP this season — lowest in MLB; League Avg: .245.

Mariners hitters are slugging just .217 with two-strikes this season — lowest in MLB; League Avg: .265.

Astros hitters are averaging just 3.64 pitches per plate appearance against RHP this season — lowest in MLB; League Avg: 3.89.

Astros hitters have just 959 strikeouts in 5,296 PA’s (18%) against LHP since the 2022 season — best in MLB; League Avg: 23%.

Astros hitters are averaging just 3.65 pitches per plate appearance this season — lowest in MLB; League Avg: 3.89.

14% of Astros’ hitters plate appearances have lasted only one pitch (2,570/18,230 PA’s) since the 2022 season — highest in MLB; League Avg: 11%.

Mariners pitchers have walked 73 of 1,387 batters (5%) when facing the leadoff batter in the inning this season — best in MLB; League Avg: 7%.

The Mariners pitchers have allowed division opponents to score first in just 24% of their games this season — lowest in MLB; League Avg: 50%.

Mariners pitchers have an ERA of 2.81 (711.0 IP) at home this season — best in MLB; League Avg: 3.98.

Mariners pitchers have walked 1,225 of 17,582 batters (7%) since the 2022 season — best in MLB; League Avg: 8%.

Astros pitchers have an ERA of 3.52 (2097.1 IP) on the road since the 2022 season — best in MLB; League Avg: 4.26.

Astros pitchers have a strikeout rate of 45% with two-strikes since the 2022 season — 2nd best in MLB; League Avg: 42%.

Opponents have a miss rate of 28% against Astros pitchers since last season — 2nd best in MLB; League Avg: 26%.

The average home run distance against the Astros pitchers since last season is 392.3 feet — best in MLB; League Avg: 398.4

Astros vs. Mariners Injuries Tonight That May Affect Prop Bets 

  • Houston Astros – No Injuries Reported
  • Seattle Mariners – No Injuries Reported

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About the Author

Shane Jackson

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Shane Jackson is a Web Content Writer for BetMGM, covering MLB and NBA. After graduating from the University of Kansas, his previous stops include MLB.com, Lawrence Journal-World, Manhattan Mercury, Bet Chicago Sports, WynnBET, and Sportsbook Review.

Shane Jackson is a Web Content Writer for BetMGM, covering MLB and NBA. After graduating from the University of Kansas, his previous stops include MLB.com, Lawrence Journal-World, Manhattan Mercury, Bet Chicago Sports, WynnBET, and Sportsbook Review.