Mariners vs. Brewers prediction: Why Milwaukee is favored to win Thursday's MLB matchup [8/20/2026]

The Milwaukee Brewers will square off with the Seattle Mariners, in what is expected to be a tight MLB game, at American Family Field on Thursday, commencing at 2:10 PM ET.

Robert Gasser (3-5, 4.54 ERA) will start on the mound for the Brewers, while the Mariners have opted for George Kirby (8-9, 3.88 ERA).

Dimers' proven MLB model gives the Brewers a slight edge with a 51.5% win probability over the Mariners.

This article offers a complete Mariners vs. Brewers prediction, including best bets and picks.

Mariners vs. Brewers prediction: Who will win and cover?

Using trusted machine learning and data, we have simulated the outcome of Thursday's MLB matchup between the Mariners and Brewers, forming part of our MLB predictions coverage.

Our independent predictive model gives the Brewers a 51.5% chance of beating the Mariners.

According to our model, the Mariners (+1.5) have a 65.8% chance of covering the run line, while the over/under total of 7.5 runs has a 59.1% chance of going over,.

Mariners vs. Brewers odds [8/20/2026]

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

• Run Line: Mariners +1.5 (-163) / Brewers -1.5 (+163)
• Moneyline: Mariners +130, Brewers -128

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

Mariners vs. Brewers picks and best bet

After matching our predictions 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 @ -163 via DraftKings
• Moneyline: Mariners @ +130 via Novig
• Total: Over 7.5 @ -106 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.

Mariners vs. Brewers game-day updates and essential details

Thursday's MLB action between the Brewers and Mariners at American Family Field is scheduled to begin at 2:10 PM ET.

• Who: Seattle Mariners vs. Milwaukee Brewers
• Date: Thursday, August 20, 2026
• Time: 2:10 PM ET/11:10AM PT
• Venue: American Family Field

Conclusion

We predict the Brewers, with a 51.5% win probability, will likely beat the Mariners in Thursday's MLB matchup.

Additional tools and information for betting safely can be found in our Responsible Gambling hub.