White Sox vs. Cardinals prediction: St. Louis favored to win Saturday's MLB matchup [9/12/2026]

The St. Louis Cardinals will face the Chicago White Sox, in what is expected to be a tight MLB game, at Busch Stadium on Saturday, commencing at 7:15 PM ET.

Kyle Leahy (10-4, 3.41 ERA) will start for the Cardinals, while the White Sox have opted for Sean Newcomb (2-4, 2.71 ERA).

Dimers' proven MLB model gives the Cardinals a slight edge with a 51.6% win probability over the White Sox.

This article offers a complete White Sox vs. Cardinals prediction, including best bets and picks.

White Sox vs. Cardinals prediction and odds

Using innovative machine learning and data analysis, we have re-simulated the outcome of Saturday's MLB game between the White Sox and Cardinals, forming part of our MLB predictions coverage.

Our independent predictive model gives the Cardinals a 51.6% chance of defeating the White Sox. According to our model, the Cardinals (+1.5) have a 63.5% chance of covering the run line, while the 8.5-run over/under has a 51.8% 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: White Sox -1.5 (+155) / Cardinals +1.5 (-163)
• Moneyline: White Sox +100, Cardinals +104
• Total: Over/Under 8.5 (+104/-108)

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: Cardinals +1.5 @ 62¢ via Novig
• Moneyline: Cardinals @ 49¢ via Polymarket
• Total: Over 8.5 @ 49¢ via Novig

According to our MLB best bets, the top play to make on this game is Over 8.5 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 game between the Cardinals and White Sox at Busch Stadium is scheduled to begin at 7:15 PM ET.

• Who: Chicago White Sox vs. St. Louis Cardinals
• Date: Saturday, September 12, 2026
• Time: 7:15 PM ET/4:15PM PT
• Venue: Busch Stadium

Conclusion

We predict the Cardinals, with a 51.6% win probability, will likely beat the White Sox 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.