Astros vs Mariners Prediction, Odds & Player Prop Bets Today – MLB, Jul 21

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Seattle Mariners' J.P. Crawford follows through during an at-bat a baseball game against the Texas Rangers, Saturday, Sept. 30, 2023, in Seattle. (AP Photo/Lindsey Wasson)
(AP Photo/Lindsey Wasson)
BetMGM Betting @BETMGM Jul 21, 2024, 11:00 AM
  • The Mariners are -120 favorites vs the Astros
  • Astros vs Mariners Over / Under today: 7.5 Runs
  • Astros / Mariners TV Channel: SCHN | RTNW

The Houston Astros (+100) visit T-Mobile Park to take on the Seattle Mariners (-120) on Sunday, July 21, 2024. First pitch is scheduled for 4:10pm EDT in Seattle, WA.

This season, the Astros are 52-46 against the spread (ATS), while the Mariners are 44-56 ATS.

Astros vs Mariners Starting Pitchers Today:

  • Astros starting pitcher: Ronel Blanco 9-4, 2.57 ERA
  • Mariners starting pitcher: Bryan Woo 3-1, 2.48 ERA

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

SpreadOver / UnderMoneyline
Astros+1.5 -200O 7.5 -105+100
Mariners -1.5 +165U 7.5 -115-120

Astros vs Mariners Prediction for Today’s Game

Based on recent trends the model predicts the Astros will win Sunday‘s MLB game with 53.0% 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 Astros players for Sunday‘s game, looking at profitable historical betting trends:

Best Astros Player Prop Bets Today:

  • Alex Bregman has hit the Hits Over in 21 of his last 25 games (+17.10 Units / 34% ROI)
  • Jeremy Pena has hit the Total Bases Under in 16 of his last 17 away games (+14.60 Units / 55% ROI)
  • Jeremy Pena has hit the Hits Runs and RBIs Under in 21 of his last 29 games (+14.05 Units / 45% ROI)
  • Jeremy Pena has hit the Runs Under in 22 of his last 27 games (+13.65 Units / 31% ROI)
  • Jose Altuve has hit the Singles Over in 33 of his last 50 games (+11.60 Units / 18% ROI)

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

Best Mariners Player Prop Best Bets Today:

  • Luke Raley has hit the Home Runs Over in 5 of his last 13 games at home (+15.60 Units / 120% ROI)
  • Julio Rodriguez has hit the Hits Under in 24 of his last 35 games (+15.00 Units / 23% ROI)
  • Julio Rodriguez has hit the Total Bases Under in 34 of his last 50 games (+12.60 Units / 18% ROI)
  • Josh Rojas has hit the Singles Under in 20 of his last 27 games (+11.90 Units / 35% ROI)
  • Julio Rodriguez has hit the Hits Runs and RBIs Under in 18 of his last 26 games (+10.55 Units / 37% ROI)
  • The Houston Astros have covered the Run Line in 29 of their last 40 games (+20.10 Units / 39% ROI)
  • The Houston Astros have hit the Game Total Under in 49 of their last 81 games (+16.20 Units / 18% ROI)
  • The Houston Astros have hit the Moneyline in 19 of their last 25 games (+13.65 Units / 41% ROI)
  • The Houston Astros have covered the 1st Five Innings (F5) Run Line in 37 of their last 59 games (+11.55 Units / 16% ROI)
  • The Houston Astros have hit the 1st Five Innings (F5) Moneyline in 14 of their last 23 games (+9.70 Units / 32% ROI)
  • The Seattle Mariners have hit the Game Total Under in 33 of their last 49 games at home (+16.30 Units / 30% ROI)
  • The Seattle Mariners have hit the Team Total Under in 28 of their last 45 games at home (+9.40 Units / 18% ROI)
  • The Seattle Mariners have hit the Moneyline in 26 of their last 40 games at home (+8.45 Units / 15% ROI)
  • The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Under in 29 of their last 50 games at home (+8.15 Units / 14% ROI)
  • The Seattle Mariners have covered the Run Line in 21 of their last 40 games at home (+5.35 Units / 11% ROI)

Astros Against the Spread (ATS) Record

Against the spread this season, the Astros are 52-46 against the Run Line (+7.35 Units / 6.04% ROI).

  • 52-46 when betting on the Moneyline for -6.35 Units / -4.62% ROI
  • 38-57 when betting on the total runs Over for -24.05 Units / -22.4% ROI
  • 57-38 when betting on the total runs Under for +15.35 Units / 14.16% ROI

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are 44-56 against the Run Line (-17.3 Units / -13.45% ROI).

  • 52-48 when betting on the Moneyline for -6.7 Units / -5.15% ROI
  • 40-56 when betting on the total runs Over for -20.95 Units / -19.3% ROI
  • 56-40 when betting on the total runs Under for +11.9 Units / 10.86% ROI

Mariners vs Astros Home Run Prop Bets Today

Over Under
Yordan Alvarez (HOU) 0.5 +250 0.5 -350
Cal Raleigh (SEA) 0.5 +320 0.5 -400
Julio Rodriguez (SEA) 0.5 +400 0.5 -550
Mitch Garver (SEA) 0.5 +525 0.5 -750
Luke Raley (SEA) 0.5 +575 0.5 -900

Mariners vs Astros Total Hits Prop Bets Today

Over Under
Yordan Alvarez (HOU) 0.5 -250 0.5 +180
Jose Altuve (HOU) 0.5 -250 0.5 +180
Julio Rodriguez (SEA) 0.5 -250 0.5 +175
Jeremy Pena (HOU) 0.5 -225 0.5 +165
Alex Bregman (HOU) 0.5 -225 0.5 +175

Mariners vs Astros RBI Prop Bets Today

Over Under
Yordan Alvarez (HOU) 0.5 +135 0.5 -175
Julio Rodriguez (SEA) 0.5 +160 0.5 -210
Cal Raleigh (SEA) 0.5 +160 0.5 -210
Yainer Diaz (HOU) 0.5 +185 0.5 -250
Mitch Garver (SEA) 0.5 +210 0.5 -275

Mariners vs Astros Strikeout Prop Bets Today

Over Under
Bryan Woo (SEA) 3.5 -165 3.5 +130
Ronel Blanco (HOU) 6.5 +105 6.5 -135

Opponents are hitting just .136 (19-for-140) against Ronel Blanco when going through the lineup the second time in a game this season — best among qualified SPs in MLB; League Avg: .227 — 100th Percentile.

Opponents are hitting just .214 (36-for-168) against Ronel Blanco in non-two strike counts this season — best among qualified SPs in MLB; League Avg: .319 — 100th Percentile.

Ronel Blanco has allowed a BABIP of .179 this season — best among qualified SPs in MLB; League Avg: .283 — 100th Percentile.

Opponents are hitting just .169 (64-for-379) against Ronel Blanco this season — best among qualified SPs in MLB; League Avg: .235 — 100th Percentile.

Mariners Starting Pitcher Stats & Trends

Bryan Woo has thrown fastballs 74% of the time (1,547/2,077) since last season — highest in MLB among starting pitchers with at least 103 total IP; League Avg: 47% — 100th Percentile.

Bryan Woo has a strike rate of 73% (457/629) this season — highest in MLB among starting pitchers with at least 38 total IP; League Avg: 65% — 100th Percentile.

Bryan Woo has allowed an OBP of just .241 (170 PA’s) this season — 4th best in MLB among starting pitchers with at least 38 total IP; League Avg: .306 — 98th Percentile.

Bryan Woo has thrown fastballs 79% of the time (495/629) this season — highest in MLB among starting pitchers with at least 38 total IP; League Avg: 47% — 100th Percentile.

Astros Keys to the Game vs. the Mariners

The Astros are just 0-34 (.000) when trailing entering the 9th inning this season — tied for lowest in MLB; League Avg: .056.

The Astros are 55-48 (.534) vs the top 10 runs allowed teams since the 2022 season — 4th best in MLB; League Avg: .428.

The Astros are just 3-8 (.273) when tied entering the 8th inning this season — 3rd lowest in MLB; League Avg: .500.

The Astros are 39-5 (.886) when scoring 5 or more runs this season — 3rd best in MLB; League Avg: .801.

Mariners Keys to the Game vs. the Astros

The Mariners are 179-9 (.952) when leading entering the 8th inning since the 2022 season — best in MLB; League Avg: .905.

The Mariners are 189-4 (.979) when leading entering the 9th inning since the 2022 season — best in MLB; League Avg: .950.

The Mariners are 156-26 (.857) when scoring 5 or more runs since the 2022 season — 3rd best in MLB; League Avg: .794.

The Mariners are 43-1 (.977) when leading entering the 9th inning this season — 5th best in MLB; League Avg: .944.

Astros hitters have just 824 strikeouts in 4,667 PA’s (18%) against LHP since the 2022 season — best in MLB; League Avg: 22%.

14% of Astros’ hitters plate appearances have lasted only one pitch (2,243/16,022 PA’s) since the 2022 season — highest in MLB; League Avg: 11%.

14% of Astros’ hitters plate appearances have lasted only one pitch (1,402/9,968 PA’s) since last season — highest in MLB; League Avg: 11%.

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

Mariners hitters have put just 32% of their swings in play with two-strikes since last season — lowest in MLB; League Avg: 37%.

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: .265.

The Mariners are batting just .217 against LHP this season — lowest in MLB; League Avg: .248.

Mariners hitters have 776 strikeouts in 2,689 PA’s (29%) against RHP this season — highest in MLB; League Avg: 22%.

The average home run distance against the Astros pitchers this season is 387.7 feet — best in MLB; League Avg: 397.4

Astros pitchers have walked 18 of 134 batters (13%) when facing the leadoff batter in the inning this month (15 games) — highest in MLB; League Avg: 7%.

Astros pitchers have a strikeout rate of 51% with two-strikes over the last 14 days — best in MLB; League Avg: 43%.

Astros pitchers have a strikeout rate of 24% since the 2022 season — 2nd best in MLB; League Avg: 23%.

Mariners pitchers have walked 46 of 888 batters (5%) when facing the leadoff batter in the inning this season — best in MLB; League Avg: 7%.

Mariners pitchers have walked 143 of 2,343 batters (6%) when facing the leadoff batter in the inning since last season — tied for best in MLB; League Avg: 8%.

Mariners pitchers have an ERA of 3.14 (1200.0 IP) at home since last season — best in MLB; League Avg: 4.11.

Mariners pitchers have walked 238 of 3,792 batters (6%) when facing the leadoff batter in the inning since the 2022 season — 2nd best in MLB; League Avg: 8%.

Mariners vs. Astros Injuries Tonight That May Affect Prop Bets 

  • Jackson Kowar (Seattle Mariners): Elbow, 60-Day IL
  • Mitch Garver (Seattle Mariners): Back, Day-To-Day
  • Sam Haggerty (Seattle Mariners): Undisclosed, 10-Day IL
  • Gregory Santos (Seattle Mariners): Lat, 15-Day IL
  • Eduard Bazardo (Seattle Mariners): Shoulder, 15-Day IL
  • Bryan Woo (Seattle Mariners): Elbow, 15-Day IL
  • Matt Brash (Seattle Mariners): Elbow, 15-Day IL
  • Grae Kessinger (Houston Astros): Hamstring, Day-To-Day
  • Justin Verlander (Houston Astros): Shoulder, 15-Day IL
  • Penn Murfee (Houston Astros): Elbow, 15-Day IL
  • Kendall Graveman (Houston Astros): Shoulder, 60-Day IL
  • Jose Abreu (Houston Astros): Hand, Day-To-Day
  • Jose Urquidy (Houston Astros): Forearm, 15-Day IL
  • Oliver Ortega (Houston Astros): Elbow, 15-Day IL
  • Lance McCullers (Houston Astros): Forearm, 60-Day IL
  • Bennett Sousa (Houston Astros): Shoulder, 15-Day IL
  • Forrest Whitley (Houston Astros): Finger, 7-Day IL
  • Shawn Dubin (Houston Astros): Forearm, 15-Day IL

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Our BetMGM betting authors are experts who focus on individual game matchups & player prop bets with an emphasis on betting odds, lines & predictions.

Our BetMGM betting authors are experts who focus on individual game matchups & player prop bets with an emphasis on betting odds, lines & predictions.