Mariners vs. Guardians prediction: Why Seattle is favored to win Sunday's MLB matchup [6/28/2026]
Get Seattle Mariners vs Cleveland Guardians predictions for MLB Sunday.
MLB action continues on Sunday at 1:40 PM ET as the Seattle Mariners take on the Cleveland Guardians at Progressive Field.
Gavin Williams (9-4, 3.82 ERA) will start on the mound for the Guardians, while the Mariners have opted for Emerson Hancock (5-4, 3.60 ERA).
Based on the latest simulation results, Dimers' advanced MLB model gives the Mariners a slight edge with a 52.5% 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?
Our leading predictive model currently gives the Mariners a 52.5% 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 over/under total of 7.5 runs has a 52.5% chance of going over,.
Mariners vs. Guardians odds [6/28/2026]
We have researched 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 probabilities 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 commence 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 52.5% 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.
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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.
