Nationals vs. Marlins prediction: Why Miami is favored to win Tuesday's MLB matchup [9/9/2025]

The Miami Marlins and Washington Nationals will lock horns in MLB action at loanDepot park on Tuesday, starting at 6:40PM ET.

The Marlins will have Adam Mazur (0-2, 5.74 ERA) as their starting pitcher, up against Mitchell Parker (7-15, 5.87 ERA) for the Nationals.

Based on updated simulations, Dimers' advanced MLB model predicts the Marlins as the most likely winner of today's game.

For further insights into Tuesday's matchup, including best bets and picks, visit our interactive Nationals vs. Marlins predictions page.

Marlins vs. Nationals prediction: Who will win, cover the run line?

Using trusted machine learning and data analysis, we have simulated the outcome of Tuesday's MLB game between the Nationals and Marlins 10,000 times as part of our MLB predictions coverage.

Our independent predictive model currently gives the Marlins a 51% chance of beating the Nationals.

According to our model, the Nationals (+1.5) have a 66% chance of covering the run line, while the over/under total of 9 runs has a 51% chance of staying under.

Nationals vs. Marlins odds [9/9/2025]

We have researched the best MLB odds in America for this game, which are listed here:

Bet Type	Nationals	Marlins
Run Line	+1.5 (-192)	-1.5 (+164)
Moneyline	+105	-122
Total	o9 (-110)	u9 (-105)

All odds are correct at the time of publication and are subject to change.

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Nationals vs. Marlins picks and best bets

Our model's biggest edge in today's Nationals vs. Marlins matchup is on the total.

Our expert predictions, matched against the latest odds, reveal the best MLB picks and MLB best bets for every game throughout the season.

Unlimited access to our complete suite of picks, including this one, is available via Dimers Pro.

Calling Our Shot's best bets video

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Nationals vs. Marlins game-day updates and essential details

Tuesday's MLB game between the Marlins and Nationals at loanDepot park is scheduled to begin at 6:40PM ET.

• Who: Washington Nationals vs. Miami Marlins
• Date: Tuesday, September 9, 2025
• Time: 6:40PM ET/3:40PM PT
• Venue: loanDepot park

Dimers' in-depth preview of Tuesday's Nationals vs. Marlins matchup includes our prediction, picks and the latest betting odds.

Before making any Nationals vs. Marlins picks, be sure to check out the latest MLB predictions and betting advice from Dimers Pro.

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Conclusion

We predict the Marlins, with a 51% win probability, will likely beat the Nationals on Tuesday.

AI and automation have enhanced this article to quickly deliver accurate Nationals vs. Marlins insights, with human oversight ensuring high editorial quality. Our predictions are based on the latest data to help you make informed decisions. For additional resources and advice on responsible gambling, please call 1-800-GAMBLER.

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