Sep 20, 2026
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Read Article Nationals vs. Cardinals prediction: St. Louis favored to win Saturday's MLB matchup [9/19/2026]
Updated: | First published:
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Written by Dave Garofolo, Content Producer
Dimers' simulation model projects a 53.2% win probability for the Cardinals at Busch Stadium.
The St. Louis Cardinals and Washington Nationals are scheduled to meet in MLB action at Busch Stadium on Saturday, starting at 7:15 PM ET.
The Cardinals will start Michael McGreevy (7-9, 3.82 ERA), up against Andrew Alvarez (2-6, 3.35 ERA) for the Nationals.
Dimers' proven MLB model gives the Cardinals a slight edge with a 53.2% win probability over the Nationals.
This article offers a complete Nationals vs. Cardinals prediction, including best bets and picks.
Nationals vs. Cardinals prediction and odds
Using powerful machine learning and data, we have re-simulated the outcome of Saturday's MLB matchup between the Nationals and Cardinals, forming part of our MLB predictions coverage.
Our famous predictive model gives the Cardinals a 53.2% chance of beating the Nationals. According to our model, the Cardinals (+1.5) have a 64.5% chance of covering the run line, while the over/under total of 8.5 runs has a 54.5% 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: Nationals -1.5 (+163) / Cardinals +1.5 (-167)
- Moneyline: Nationals -103, Cardinals +100
- Total: Over/Under 8.5 (-108/+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 @ 63¢ via Novig
- Moneyline: Cardinals @ 50¢ via Novig
- Total: Over 8.5 @ 52¢ via Polymarket
According to our MLB best bets, the top play to make on this game is Cardinals to win.
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 Cardinals and Nationals at Busch Stadium is scheduled to commence at 7:15 PM ET.
- Who: Washington Nationals vs. St. Louis Cardinals
- Date: Saturday, September 19, 2026
- Time: 7:15 PM ET/4:15PM PT
- Venue: Busch Stadium
Conclusion
We predict the Cardinals, with a 53.2% win probability, will likely beat the Nationals 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.
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