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Read Article Cubs vs. Mariners prediction: Cubs favored to win Sunday's MLB matchup [8/23/2026]
Updated: | First published:
Written by Jason Bevilacqua, Head of Content and Communities
Get Chicago Cubs vs Seattle Mariners predictions for MLB Sunday.
The Seattle Mariners and Chicago Cubs will meet in MLB action at T-Mobile Park on Sunday, starting at 4:10 PM ET.
The Mariners will send Bryce Miller (4-7, 3.71 ERA) to the mound, while the Cubs have opted for Shota Imanaga (8-9, 3.77 ERA).
Dimers' proven MLB model gives the Cubs a slight edge with a 52.0% win probability over the Mariners.
This article offers a complete Cubs vs. Mariners prediction, including best bets and picks.
Cubs vs. Mariners prediction: Who will win and cover?
Using trusted machine learning and data, we have simulated the outcome of Sunday's MLB matchup between the Cubs and Mariners, forming part of our MLB predictions coverage.
Our independent predictive model currently gives the Cubs a 52.0% chance of beating the Mariners.
According to our model, the Mariners (+1.5) have a 61.2% chance of covering the run line, while the over/under total of 7.5 runs has a 53.0% chance of going over.
Cubs vs. Mariners odds [8/23/2026]
We have researched the best MLB odds in America for this game, which are listed here:
- Run Line: Cubs -1.5 (+150) / Mariners +1.5 (-150)
- Moneyline: Cubs -115, Mariners +120
All odds are correct at the time of publication and are subject to change.
Cubs vs. Mariners 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: Mariners +1.5 @ -150 via DraftKings
- Moneyline: Mariners @ +120 via Novig
- Total: Over 7.5 @ +102 via Novig
According to our MLB best bets, the top play to make on this game is Over 7.5 total runs.
These picks are based on our probabilities matched against the implied probabilities from the sportsbook odds.
Cubs vs. Mariners game-day updates and essential details
Sunday's MLB action between the Mariners and Cubs at T-Mobile Park is scheduled to start at 4:10 PM ET.
- Who: Chicago Cubs vs. Seattle Mariners
- Date: Sunday, August 23, 2026
- Time: 4:10 PM ET/1:10PM PT
- Venue: T-Mobile Park
Conclusion
We predict the Cubs, with a 52.0% win probability, will likely beat the Mariners in Sunday's MLB matchup.
Additional tools and information for betting safely can be found in our Responsible Gambling hub.
Jason Bevilacqua, an expert in MLB, NHL, NBA, MLS, and NFL, delivers game previews, best bets, and props. Since 2020, as Head of Social and Community at Dimers, he has contributed insightful articles utilizing data-driven models and simulations.
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