Marlins vs. Padres prediction: San Diego favored to win Saturday's MLB matchup [9/19/2026]

The San Diego Padres will face the Miami Marlins in MLB action at Petco Park on Saturday, starting at 8:40 PM ET.

Casey Mize (6-9, 3.69 ERA) will start for the Padres, pitting him against Eury Pérez (7-11, 3.99 ERA) for the Marlins.

Dimers' advanced MLB model projects the Padres as the most likely winner in this Marlins vs. Padres prediction.

This article offers a closer look at Saturday's matchup, including best bets and picks.

Marlins vs. Padres prediction and odds

Using powerful machine learning and statistical analysis, we have re-simulated the result of Saturday's MLB matchup between the Marlins and Padres, forming part of our MLB predictions coverage.

Our independent predictive model currently gives the Padres a 58.2% chance of beating the Marlins. According to our model, the Marlins (+1.5) have a 59.1% chance of covering the run line, while the over/under total of 7.5 runs has a 53.7% chance of going over.

Latest betting odds

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

• Run Line: Marlins +1.5 (-156) / Padres -1.5 (+153)
• Moneyline: Marlins +138, Padres -144
• Total: Over/Under 7.5 (+100/-104)

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

Model picks and best bet

After matching our predictions against the best available odds, we can reveal our picks for each of the major markets in this matchup. Plus, find our best bet for the game below:

• Run line: Padres -1.5 @ 40¢ via Novig
• Moneyline: Marlins @ +138 via BetRivers
• Total: Over 7.5 @ 50¢ via Polymarket

According to our MLB best bets, the top play to make on this game is Over 7.5 total runs.

These picks are based on our probabilities matched against the implied probabilities from the current available odds.

Game info & first pitch details

Saturday's MLB action between the Padres and Marlins at Petco Park is scheduled to start at 8:40 PM ET.

• Who: Miami Marlins vs. San Diego Padres
• Date: Saturday, September 19, 2026
• Time: 8:40 PM ET/5:40PM PT
• Venue: Petco Park

Conclusion

We predict the Padres, with a 58.2% win probability, will likely beat the Marlins in Saturday's MLB matchup.

Additional tools and information for betting safely can be found in our Responsible Gambling hub.

This article's predictions and probabilities are generated by Dimers' proprietary MLB prediction model. Our editorial team reviews the resulting content for accuracy and presentation before publication.