Mariners vs. Diamondbacks Prediction: Arizona Predicted to Win Monday's MLB Matchup [6/9/2025]

MLB action continues on Monday at 9:40PM ET as the Seattle Mariners square off with the Arizona Diamondbacks at Chase Field.

The Diamondbacks will have Merrill Kelly (6-2, 3.43 ERA) as their starting pitcher, up against Emerson Hancock (2-2, 5.18 ERA) for the Mariners.

Based on updated simulation results, Dimers' proven MLB model (see Dimers Pro for full access) projects the Diamondbacks as the most likely winner of today's game.

"Our team has utilized the latest data to simulate Monday's Seattle-Arizona game 10,000 times," said Dimers' Chief Content Officer, Nick Slade.

"Incorporating recent updates and thousands of additional inputs, our prediction shows the Diamondbacks are likely to win, with a probability of 63%, compared to the Mariners' 37%."

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

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

Using powerful machine learning and data, we have simulated the result of Monday's MLB game between the Mariners and Diamondbacks 10,000 times as part of our MLB predictions coverage.

Our independent predictive model currently gives the Diamondbacks a 63% chance of beating the Mariners.

According to our model, the Mariners (+1.5) have a 55% chance of covering the run line, while the 9.5-run over/under has a 52% chance of staying under.

Mariners vs. Diamondbacks Odds [6/9/2025]

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

Bet Type	Mariners	Diamondbacks
Run Line	+1.5 (-137)	-1.5 (+125)
Moneyline	+146	-170
Total	o9.5 (+102)	u9.5 (-118)

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

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Mariners vs. Diamondbacks Picks and Best Bets

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

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

Unlimited access to our full suite 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 predictions featured below.

Mariners vs. Diamondbacks Game-Day Updates and Essential Details

Monday's MLB matchup between the Diamondbacks and Mariners at Chase Field is scheduled to commence at 9:40PM ET.

• Who: Seattle Mariners vs. Arizona Diamondbacks
• Date: Monday, June 9, 2025
• Time: 9:40PM ET/6:40PM PT
• Venue: Chase Field

Dimers.com's in-depth preview of Monday's Mariners vs. Diamondbacks matchup includes our prediction, picks and the latest betting odds.

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

Key MLB Betting Guides and Insights

• Explore how MLB odds work and dive into MLB live betting strategies
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Conclusion

We predict the Diamondbacks, with a 63% win probability, will likely beat the Mariners on Monday.

AI and automation have enhanced this article to quickly deliver accurate Mariners 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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