Diamondbacks vs Cardinals Prediction and MLB Tips - 18 July 2026
Last updated: Jul 18, 2026, 1:35AM | Published: Jul 17, 2026, 4:48AM
The Arizona Diamondbacks will face the St. Louis Cardinals in MLB action at Chase Field on Saturday, starting at 11:40am AEST.
The Diamondbacks will have Merrill Kelly (7-8, 5.38 ERA) start, up against Michael McGreevy (4-7, 3.01 ERA) for the Cardinals.
This article features Stats Insider's prediction and tips for the Diamondbacks vs Cardinals game, along with the latest betting odds in Australia.
Who Will Win?
Utilising trusted computer power and data, Stats Insider has simulated the outcome of Saturday's Arizona vs St. Louis MLB match-up 10,000 times.
Our independent predictive analytics model gives the Diamondbacks a 54% chance of beating the Cardinals at Chase Field.
Diamondbacks vs Cardinals: Odds
The current betting odds in Australia for Saturday's MLB game at Chase Field are listed here:
- Head to Head: Diamondbacks $1.87, Cardinals $1.95
- Line: Diamondbacks -1.5 ($2.75), Cardinals +1.5 ($1.48)
- Total (Over/Under 9 Runs): Over $1.91, Under $1.91
Odds are correct at the time of publication and subject to change.
Looking at the latest head-to-head odds, the bookmakers currently have the Diamondbacks at $1.87 and the Cardinals at $1.95.
The Diamondbacks are 1.5-run favourites against the Cardinals, with odds of $2.75 available at TAB.
For the underdog Cardinals (+1.5) to cover the line, TAB offers odds of $1.48.
The over/under for total runs scored is set at 9 with TAB, which has odds of $1.91 for the over and $1.91 for the under.
According to Stats Insider's model, the Cardinals (+1.5) are predicted to cover the line 62% of the time, while the 9-run over/under is expected to go over 56% of the time.
Diamondbacks vs Cardinals: Betting Tips
- Head to Head: Arizona at $1.87 with TAB
- Line: Diamondbacks -1.5 at $2.75 with TAB
- Total Runs: Over 9 at $1.91 with TAB
Stats Insider's Diamondbacks vs Cardinals betting tips are based on market-leading modelling and betting intelligence to provide you with the best possible advice around the clock.
Even though the Cardinals are more likely to cover the line, our best bet of Diamondbacks -1.5 is based on the chance of that happening, as suggested by our predictive analytics model, and the best odds available.
Diamondbacks vs Cardinals: Prediction
Stats Insider provides full betting coverage of the Arizona vs St. Louis game on Saturday, including data-driven predictions and live win probabilitiestips.
Remember, our model updates frequently, so keep checking this page for the latest betting tips before the Arizona vs St. Louis game.
As always, see our Best Bets to get betting tips for every MLB game, plus predictions for a wide range of other sports.
Diamondbacks vs Cardinals: Essential Details
The game between the Diamondbacks and Cardinals at Chase Field is scheduled to start at 11:40am AEST on Saturday.
- Teams: Arizona Diamondbacks vs St. Louis Cardinals
- Date: Saturday 18 July 2026
- Time: 11:40am AEST
- Venue: Chase Field
All dates and times in this article are in Australian Eastern Standard Time (AEST), unless otherwise stated.
Conclusion
Our Arizona vs St. Louis predictions are based on 10,000 data-driven simulations of the game, carefully curated by our team of experienced data scientists and analysts. We use the latest in predictive analytics technology and machine learning to ensure our MLB tips are accurate and reliable, giving you the confidence to make informed decisions.
If you decide to use our predictions for betting purposes, it's important to gamble responsibly and know when to stop. For free and confidential support, call 1800 858 858 or visit gamblinghelponline.org.au.
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