Mariners vs. Brewers prediction: Why Milwaukee is favored to win Tuesday's MLB matchup [8/18/2026]

The Milwaukee Brewers will square off with the Seattle Mariners in MLB action at American Family Field on Tuesday, beginning at 7:40 PM ET.

Kyle Harrison (9-3, 2.99 ERA) will be the starting pitcher for the Brewers, pitting him against Bryce Miller (4-6, 3.39 ERA) for the Mariners.

Dimers' advanced MLB model projects the Brewers as the most likely winner in this Mariners vs. Brewers prediction.

This article offers an expanded analysis of Tuesday's matchup, including best bets and picks.

For more, dive into Kyle Harrison's pitching projections.

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

Using innovative machine learning and data analysis, we have simulated the result of Tuesday's MLB matchup between the Mariners and Brewers, forming part of our MLB predictions coverage.

Our leading predictive model currently gives the Brewers a 58.2% chance of defeating the Mariners.

According to our model, the Mariners (+1.5) have a 59.7% chance of covering the run line, while the over/under total of 7.5 runs has a 56.8% chance of going over,.

Mariners vs. Brewers odds [8/18/2026]

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

• Run Line: Mariners +1.5 (-140) / Brewers -1.5 (+138)
• Moneyline: Mariners +156, Brewers -160

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 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 @ -140 via DraftKings
• Moneyline: Mariners @ +156 via FanDuel
• Total: Over 7.5 @ -104 via Novig

According to our best MLB 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

Tuesday's MLB matchup between the Brewers and Mariners at American Family Field is scheduled to begin at 7:40 PM ET.

• Who: Seattle Mariners vs. Milwaukee Brewers
• Date: Tuesday, August 18, 2026
• Time: 7:40 PM ET/4:40PM PT
• Venue: American Family Field

Conclusion

We predict the Brewers, with a 58.2% win probability, will likely beat the Mariners in Tuesday's MLB matchup.

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