Cardinals vs. Pirates prediction: Why Pittsburgh is favored to win Tuesday's MLB matchup [9/22/2026]

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Written by Dave Garofolo

Dimers' simulation model projects a 58.0% win probability for the Pirates at PNC Park.

The St. Louis Cardinals take on the Pittsburgh Pirates in MLB action.
St. Louis Cardinals vs. Pittsburgh Pirates MLB prediction for Tuesday, September 22, 2026.

The Pittsburgh Pirates will face the St. Louis Cardinals in MLB action at PNC Park on Tuesday, starting at 6:40 PM ET.

Jared Jones (4-6, 4.17 ERA) will get the ball for the Pirates, up against Andre Pallante (12-7, 3.70 ERA) for the Cardinals.

Dimers' proven MLB model projects the Pirates as the most likely winner in this Cardinals vs. Pirates prediction.

This article offers an expanded analysis of Tuesday's matchup, including best bets and picks.

Cardinals vs. Pirates prediction and odds

Using innovative machine learning and data, we have re-simulated the outcome of Tuesday's MLB matchup between the Cardinals and Pirates, forming part of our MLB predictions coverage.

Our leading predictive model currently gives the Pirates a 58.0% chance of defeating the Cardinals. According to our model, the Cardinals (+1.5) have a 60.5% chance of covering the run line, while the over/under total of 7.5 runs has a 51.4% 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: Cardinals +1.5 (-167) / Pirates -1.5 (+163)
  • Moneyline: Cardinals +141, Pirates -138
  • Total: Over/Under 7.5 (+117/-117)

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 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:

  • Run line: Pirates -1.5 @ 38¢ via Polymarket
  • Moneyline: Cardinals @ 41¢ via Novig
  • Total: Over 7.5 @ 46¢ via Novig

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

Tuesday's MLB game between the Pirates and Cardinals at PNC Park is scheduled to commence at 6:40 PM ET.

Conclusion

We predict the Pirates, with a 58.0% win probability, will likely beat the Cardinals in Tuesday'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.

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Written by
Dave Garofolo
Content Producer

Dave Garofolo uses sophisticated AI-driven analytics to make predictions and evaluate player performances in the NBA, MLB, NFL, NHL, NCAAM, and PGA TOUR tournaments, crafting insightful game and prop previews.

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