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

Houston Astros' Jose Altuve bats during the first inning of a spring training baseball game against the St. Louis Cardinals, Monday, March 6, 2023, in Jupiter, Fla. (AP Photo/Lynne Sladky)
(AP Photo/Lynne Sladky)
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  • The Astros are -125 favorites vs the Marlins
  • Marlins vs Astros Over / Under today: 8.5 Runs
  • Marlins / Astros TV Channel: MATV | SCHN

The Miami Marlins (+105) visit Daikin Park to take on the Houston Astros (-125) on July 21, 2026. First pitch is scheduled for 8:10 pm in Houston, TX.

This season, the Marlins are against the spread (ATS), while the Astros are ATS.

Marlins vs Astros Starting Pitchers Today:

  • Marlins starting pitcher: Tyler Phillips 2-4, 3.50 ERA
  • Astros starting pitcher: Tatsuya Imai 5-4, 6.10 ERA

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

SpreadOver / UnderMoneyline
Marlins+1.5 -190O 8.5 +100+105
Astros -1.5 +155U 8.5 -130-125

Marlins vs Astros Prediction for Today’s Game

Based on recent trends the model predicts the Astros will win Tuesday‘s MLB game with 54.9% 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 Marlins players for Tuesday‘s game, looking at profitable historical betting trends:

Best Marlins Player Prop Bets Today:

  • Liam Hicks has hit the Hits Over in 22 of his last 25 games (+18.25 Units / 37% ROI)
  • Liam Hicks has hit the Singles Over in 21 of his last 25 games (+16.00 Units / 49% ROI)
  • Xavier Edwards has hit the Walks Over in 15 of his last 25 away games (+14.60 Units / 58% ROI)
  • Joe Mack has hit the Home Runs Over in 4 of his last 10 away games (+14.00 Units / 140% ROI)
  • Liam Hicks has hit the Hits Runs and RBIs Over in 19 of his last 25 games (+13.15 Units / 46% ROI)

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

Best Astros Player Prop Best Bets Today:

  • Jose Altuve has hit the Home Runs Over in 4 of his last 10 games (+18.00 Units / 180% ROI)
  • Isaac Paredes has hit the Singles Over in 18 of his last 25 games (+13.70 Units / 54% ROI)
  • Isaac Paredes has hit the Hits Over in 17 of his last 20 games at home (+11.50 Units / 32% ROI)
  • Isaac Paredes has hit the Total Bases Over in 17 of his last 25 games at home (+10.75 Units / 34% ROI)
  • Yordan Alvarez has hit the RBIs Over in 7 of his last 9 games at home (+7.15 Units / 79% ROI)
  • The Miami Marlins have hit the Game Total Over in 31 of their last 50 away games (+13.35 Units / 24% ROI)
  • The Miami Marlins have covered the Run Line in 26 of their last 40 games (+12.10 Units / 22% ROI)
  • The Miami Marlins have hit the Moneyline in 30 of their last 50 games (+9.75 Units / 17% ROI)
  • The Miami Marlins have covered the 1st Five Innings (F5) Run Line in 23 of their last 35 games (+9.25 Units / 22% ROI)
  • The Miami Marlins have hit the 1st Five Innings (F5) Moneyline in 21 of their last 35 games (+8.80 Units / 21% ROI)
  • The Houston Astros have hit the Team Total Under in 23 of their last 35 games at home (+8.50 Units / 19% ROI)
  • The Houston Astros have hit the 1st Five Innings (F5) Team Total Under in 23 of their last 35 games (+8.30 Units / 18% ROI)
  • The Houston Astros have hit the Game Total Over in 28 of their last 50 games at home (+5.50 Units / 10% ROI)
  • The Houston Astros have covered the Run Line in 28 of their last 50 games (+3.85 Units / 5% ROI)
  • The Houston Astros have hit the Moneyline in 27 of their last 50 games (+2.40 Units / 4% ROI)

Marlins Against the Spread (ATS) Record

Against the spread this season, the Marlins are against the Run Line ( Units / ROI).

  • away moneyline record when betting on the Moneyline for ML units Units / ML ROI ROI
  • away total over record when betting on the total runs Over for over units Units / over ROI ROI
  • away total under record when betting on the total runs Under for under units Units / under ROI ROI

Astros Against the Spread (ATS) Record

Against the spread this season, the Astros are against the Run Line ( Units / ROI).

  • home moneyline record when betting on the Moneyline for ML units Units / ML ROI ROI
  • home total over record when betting on the total runs Over for over units Units / over ROI ROI
  • home total under record when betting on the total runs Under for under units Units / under ROI ROI

Astros vs Marlins Home Run Prop Bets Today

Yes
Yordan Alvarez +260
Christian Walker +340
Kyle Stowers +340
Heriberto Hernandez +390
Isaac Paredes +400

Astros vs Marlins Total Hits Prop Bets Today

Over Under
Xavier Edwards 0.5 -275 0.5 +195
Liam Hicks 0.5 -225 0.5 +165
Isaac Paredes 0.5 -210 0.5 +155
Yainer Diaz 0.5 -200 0.5 +145
Christian Walker 0.5 -190 0.5 +140

Astros vs Marlins Strikeout Prop Bets Today

Over Under
Jakob Marsee 0.5 -250 0.5 +180
Christian Walker 0.5 -235 0.5 +175
Cam Smith 0.5 -200 0.5 +150
Graham Pauley 0.5 -185 0.5 +135
LaMonte Wade Jr. 0.5 -160 0.5 +120

Marlins Keys to the Game vs. the Astros

The Marlins are just 2-41 (.047) when trailing entering the 8th inning this season — 5th lowest in MLB; League Avg: .098.

The Marlins are just 1-42 (.023) when trailing entering the 9th inning this season — tied for 4th lowest in MLB; League Avg: .053.

The Marlins are 28-4 (.875) when they’ve had 10 or more hits this season — 5th best in MLB; League Avg: .752.

The Marlins are 8-4 (.667) when tied entering the 8th inning this season — tied for 4th best in MLB; League Avg: .500.

Astros Keys to the Game vs. the Marlins

The Astros are 42-0 (1.000) when leading entering the 9th inning this season — tied for best in MLB; League Avg: .947.

The Astros are 36-3 (.923) when leading entering the 7th inning this season — 5th best in MLB; League Avg: .864.

The Astros are just 19-28 (.404) after a win this season — 3rd lowest in MLB; League Avg: .515.

The Astros are 8-4 (.667) when tied entering the 8th inning this season — tied for 4th best in MLB; League Avg: .500.

Marlins hitters have a groundball batting average of .285 this season — best in MLB.

Marlins hitters have a Hard-Hit Rate of just 35% on the first pitch of at-bats this season — lowest in MLB.

Marlins hitters have an OPS of .537 (1,933 PA’s) with two-strikes this season — 4th best in MLB.

Marlins hitters are slugging .278 with two-strikes this season — 5th best in MLB.

Astros hitters have 32 extra-base hits out of 116 total hits (just 28%) when facing the starting pitcher for the 3rd time in a game this season — 2nd lowest in MLB.

The Astros are batting just .318 on the first pitch of at-bats this season — tied for 5th lowest in MLB.

The Astros are batting just .231 at home this season — 5th lowest in MLB.

Astros hitters have 64 extra-base hits out of 143 total hits (45%) on the first pitch of at-bats this season — 2nd best in MLB.

The Marlins have won just 10% of road games in which their opponents scored first this season — 3rd lowest in MLB.

The Marlins have allowed 5.08 runs per game (254/50) on the road this season — tied for 5th highest in MLB.

Marlins pitchers have allowed 100 home runs this season — tied for 5th fewest in MLB.

Marlins pitchers have an ERA of 3.31 (462.2 IP) at home this season — 5th best in MLB.

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

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

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

Astros pitchers have allowed opponents to score in three different innings in 57% of their games this season — 2nd highest in MLB.

More MLB Reading:


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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.