Sep 20, 2026
Twins vs. Angels prediction: Minnesota favored to win Sunday's MLB matchup [9/20/2026]
Read Article Mariners vs. Rockies prediction: Why Seattle is favored to win Sunday's MLB matchup [9/20/2026]
Updated: | First published:
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Written by Dave Garofolo, Content Producer
Dimers' simulation model projects a 61.6% win probability for the Mariners at Coors Field.
The Colorado Rockies will face the Seattle Mariners in MLB action at Coors Field on Sunday, beginning at 3:10 PM ET.
Tomoyuki Sugano (12-10, 5.49 ERA) will get the ball for the Rockies, up against Kade Anderson (1-2, 5.33 ERA) for the Mariners.
Dimers' proven MLB model projects the Mariners as the most likely winner in this Mariners vs. Rockies prediction.
This article offers an expanded analysis of Sunday's matchup, including best bets and picks.
Mariners vs. Rockies prediction and odds
Using trusted machine learning and data, we have re-simulated the result of Sunday's MLB game between the Mariners and Rockies, forming part of our MLB predictions coverage.
Our independent predictive model currently gives the Mariners a 61.6% chance of defeating the Rockies. According to our model, the Mariners (-1.5) have a 51.5% chance of covering the run line, while the over/under total of 10.5 runs has a 57.1% 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: Mariners -1.5 (+100) / Rockies +1.5 (-106)
- Moneyline: Mariners -150, Rockies +147
- Total: Over/Under 10.5 (-113/+108)
All odds are correct at the time of publication and are subject to change.
Model picks and best bet
After matching our probabilities against the best available 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: Mariners -1.5 @ 50¢ via Novig
- Moneyline: Mariners @ 60¢ via Polymarket
- Total: Over 10.5 @ 53¢ via Novig
According to our MLB best bets, the top play to make on this game is Over 10.5 total runs.
These picks are based on our probabilities matched against the implied probabilities from the current available odds.
Game info & first pitch details
Sunday's MLB matchup between the Rockies and Mariners at Coors Field is scheduled to begin at 3:10 PM ET.
- Who: Seattle Mariners vs. Colorado Rockies
- Date: Sunday, September 20, 2026
- Time: 3:10 PM ET/12:10PM PT
- Venue: Coors Field
Conclusion
We predict the Mariners, with a 61.6% win probability, will likely beat the Rockies in Sunday'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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