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Read Article Mariners vs. Guardians prediction: Why Seattle is favored to win Sunday's MLB matchup [6/28/2026]
Updated: | First published:
Written by Jason Bevilacqua, Head of Content and Communities
Get Seattle Mariners vs Cleveland Guardians predictions for MLB Sunday.
The Cleveland Guardians will square off with the Seattle Mariners, in what is expected to be a tight MLB game, at Progressive Field on Sunday, beginning at 1:40 PM ET.
The Guardians will send Gavin Williams (9-4, 3.82 ERA) to the mound, while the Mariners are going with Emerson Hancock (5-4, 3.60 ERA).
Based on updated simulation results, Dimers' proven MLB model gives the Mariners a slight edge with a 53.0% win probability over the Guardians.
This article offers further insights into Sunday's Mariners vs. Guardians matchup, including best bets and picks.
Mariners vs. Guardians prediction: Who will win and cover?
Using powerful machine learning and statistical analysis, we have simulated the outcome of Sunday's MLB game between the Mariners and Guardians, forming part of our MLB predictions coverage.
Our independent predictive model currently gives the Mariners a 53.0% chance of beating the Guardians.
According to our model, the Mariners (+1.5) have a 70.0% chance of covering the run line, while the 7.5-run over/under has a 52.5% chance of going over,.
Mariners vs. Guardians odds [6/28/2026]
We have sourced the best MLB odds in America for this game, which are listed here:
| Bet Type | Mariners | Guardians |
|---|---|---|
| Run Line | +1.5 (-210) | -1.5 (+170) |
| Moneyline | +105 | -120 |
| Total | o7.5 (-105) | u7.5 (-113) |
All odds are correct at the time of publication and are subject to change.
Mariners vs. Guardians picks and best bet
After matching our predictions against the best available odds, we can reveal our picks for each of the major markets. Plus, find our best bet for the game below:
| Bet Type | Pick | Bet Now |
|---|---|---|
| Run Line | Mariners +1.5 | -210 |
| Moneyline | Mariners | +105 |
| Total | Over 7.5 | -105 |
According to our MLB best bets, the top play to make on this game is Mariners to win.
These picks are based on our probabilities matched against the implied probabilities from the sportsbook odds.
Mariners vs. Guardians game-day updates and essential details
Sunday's MLB game between the Guardians and Mariners at Progressive Field is scheduled to begin at 1:40 PM ET.
- Who: Seattle Mariners vs. Cleveland Guardians
- Date: Sunday, June 28, 2026
- Time: 1:40 PM ET/10:40AM PT
- Venue: Progressive Field
Conclusion
We predict the Mariners, with a 53.0% win probability, will likely beat the Guardians 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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