Astros vs. Marlins Dunkel MLB Picks, Predictions and Prop Bets - July 21

The Miami Marlins take a seven-game losing streak into a home matchup versus the Houston Astros, at 8:10 p.m. ET on Tuesday. Tatsuya Imai (5-4, 6.06 ERA) will start for the Astros, who are 48-54 this season and third in the AL West. Tyler Phillips (2-4, 3.48 ERA) is starting for the Marlins, who are 52-49 and third in the NL East.

The Marlins (+104) take their show on the road to face the favored Astros (-127). The game has an over/under of 9 runs.

Astros vs. Marlins Odds, Game Time

• Game day: Tuesday, July 21, 2026
• Game time: 8:10 p.m. ET
• Location: Houston, Texas
• Stadium: Daikin Park
• Favorite: Astros (-127)
• Underdog: Marlins (+104)
• Over/under: 9

How to Watch Astros vs. Marlins

• TV Channel: SCHN and MIAM
• Live Stream: Fubo (Watch for free)

Bet now on FanDuel Sportsbook!

Astros vs. Marlins: Betting the Moneyline

• The Astros have won 16 of the 37 games they were the moneyline favorite this season (43.2%).
• Miami has come away with 20 wins in the 53 contests it has been listed as the underdogs in this season.
• Houston is 10-15 this season when entering a game favored by -127 or more on the moneyline.
• This season, the Marlins have come away with a win 15 times in 38 chances when named as an underdog of at least +104 or longer on the moneyline.
• The implied moneyline probablility in this matchup gives the Astros a 55.9% chance to win.
• The Marlins have an implied victory probability of 49% according to the moneyline set by oddsmakers for this matchup.

Astros vs. Marlins: Betting the Spread & Total

• The Astros have played in 102 games with over/under set, and have combined with opponents to go over the total 53 times (53-43-6).
• Miami and its opponents have gone over the total this season in 53 of its 101 opportunities.
• The Astros have collected a 50-52-0 record ATS this season (covering 49% of the time).
• The Marlins are 52-49-0 against the spread in their 101 games that had a posted line this season.