Jul 22, 2026
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Read Article Marlins vs. Astros prediction: Houston favored to win Tuesday's MLB matchup [7/21/2026]
Updated: | First published:
Written by Jason Bevilacqua, Head of Content and Communities
Get Miami Marlins vs Houston Astros predictions for MLB Tuesday.
The Houston Astros will face the Miami Marlins in MLB action at Daikin Park on Tuesday, beginning at 8:10 PM ET.
The Astros will start Tatsuya Imai (5-4, 6.06 ERA), pitting him against Tyler Phillips (2-4, 3.48 ERA) for the Marlins.
Based on the latest simulation results, Dimers' proven MLB model predicts the Astros as the most likely winner of the Marlins vs. Astros game.
This article offers further insights into Tuesday's matchup, including best bets and picks.
Marlins vs. Astros prediction: Who will win and cover?
Using innovative machine learning and data, we have simulated the outcome of Tuesday's MLB game between the Marlins and Astros, forming part of our MLB predictions coverage.
Our independent predictive model currently gives the Astros a 56.8% chance of beating the Marlins.
According to our model, the Marlins (+1.5) have a 58.6% chance of covering the run line, while the over/under total of 9.5 runs has a 53.5% chance of going over,.
Marlins vs. Astros odds [7/21/2026]
We have sourced the best MLB odds in America for this game, which are listed here:
| Bet Type | Marlins | Astros |
|---|---|---|
| Run Line | +1.5 (-178) | -1.5 (+174) |
| Moneyline | +113 | -115 |
| Total | o9.5 (+113) | u9.5 (-113) |
All odds are correct at the time of publication and are subject to change.
Marlins vs. Astros picks and best bet
After matching our predictions against the best current odds, we can reveal our picks for each of the major markets in this matchup. Plus, find our best bet for the game below:
| Bet Type | Pick | Bet Now |
|---|---|---|
| Run Line | Astros -1.5 | +174 |
| Moneyline | Astros | -115 |
| Total | Over 9.5 | +113 |
According to our MLB best bets, the top play to make on this game is Over 9.5 total runs.
These picks are based on our probabilities matched against the implied probabilities from the sportsbook odds.
Marlins vs. Astros game-day updates and essential details
Tuesday's MLB action between the Astros and Marlins at Daikin Park is scheduled to start at 8:10 PM ET.
- Who: Miami Marlins vs. Houston Astros
- Date: Tuesday, July 21, 2026
- Time: 8:10 PM ET/5:10PM PT
- Venue: Daikin Park
Conclusion
We predict the Astros, with a 56.8% win probability, will likely beat the Marlins in Tuesday's MLB matchup.
Additional tools and information for betting safely can be found in our Responsible Gambling hub.
Jason Bevilacqua, an expert in MLB, NHL, NBA, MLS, and NFL, delivers game previews, best bets, and props. Since 2020, as Head of Social and Community at Dimers, he has contributed insightful articles utilizing data-driven models and simulations.
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