Rockies vs. Diamondbacks Prediction: Arizona Predicted to Win Sunday's MLB Matchup [5/18/2025]

The Arizona Diamondbacks and Colorado Rockies will meet in MLB action at Chase Field on Sunday, starting at 4:10PM ET.

The Diamondbacks will have Merrill Kelly (4-2, 3.71 ERA) as their starting pitcher, while the Rockies are going with Chase Dollander (2-4, 6.88 ERA).

Based on updated simulations, Dimers' advanced MLB model (see Dimers Pro for full access) predicts the Diamondbacks as the most likely winner of today's game.

"Using the most recent data, our experts ran 10,000 simulations of Sunday's Colorado-Arizona game," said Dimers' Chief Content Officer, Nick Slade.

"After accounting for recent updates and other variables, our prediction shows the Diamondbacks with a win probability of 68%, while the Rockies have 32%."

For a closer look at Sunday's matchup, including best bets and picks, visit our interactive Rockies vs. Diamondbacks predictions page.

Diamondbacks vs. Rockies Prediction: Who Will Win, Cover the Run Line?

Using innovative machine learning and data, we have simulated the outcome of Sunday's MLB matchup between the Rockies and Diamondbacks 10,000 times as part of our MLB predictions coverage.

Our leading predictive model gives the Diamondbacks a 68% chance of beating the Rockies.

According to our model, the Diamondbacks (-1.5) have a 53% chance of covering the run line, while the over/under total of 9 runs has a 52% chance of staying under.

Rockies vs. Diamondbacks Odds [5/18/2025]

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

Bet Type	Rockies	Diamondbacks
Run Line	+1.5 (+130)	-1.5 (-152)
Moneyline	+245	-298
Total	o9 (-112)	u9 (-105)

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

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Rockies vs. Diamondbacks Picks and Best Bets

Our model's strongest edge in today's Rockies vs. Diamondbacks matchup is on the total.

Our expert predictions, matched against the latest odds, reveal the best MLB picks and MLB best bets for every game throughout the season.

Unlimited access to our full set of picks, including this one, is available via Dimers Pro.

Calling Our Shot's Free MLB Picks

Calling Our Shot produces daily MLB betting content, including the latest best bets featured below.

Rockies vs. Diamondbacks Game-Day Updates and Essential Details

Sunday's MLB matchup between the Diamondbacks and Rockies at Chase Field is scheduled to begin at 4:10PM ET.

• Who: Colorado Rockies vs. Arizona Diamondbacks
• Date: Sunday, May 18, 2025
• Time: 4:10PM ET/1:10PM PT
• Venue: Chase Field

Dimers.com's full preview of Sunday's Rockies vs. Diamondbacks matchup includes our prediction, picks and the latest betting odds.

Before making any Colorado vs. Arizona picks, be sure to check out the latest MLB predictions and betting advice from Dimers Pro.

Key MLB Betting Guides and Insights

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Conclusion

We predict the Diamondbacks, with a 68% win probability, will likely beat the Rockies on Sunday.

AI and automation have enhanced this article to quickly deliver accurate Rockies vs. Diamondbacks insights, with human oversight ensuring high editorial quality. Our predictions are drawn from up-to-date data to help you make informed decisions. For additional resources and advice on responsible gambling, please call 1-800-GAMBLER.

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