MLB Prop Bets: Milwaukee Brewers vs Seattle Mariners (August 18, 2026)
The Seattle Mariners (59-66) face the Milwaukee Brewers (77-48) at American Family Field on Tuesday at 7:40pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Bryce Miller is the probable pitcher for the Mariners, while Kyle Harrison is the probable pitcher for the Brewers. The Brewers are favored to win at -162, while the Mariners are at +134. The total runs line is set at 7.5, with OVER at -115 and UNDER at -105.
- The Mariners (-173) have a 49-76 Run Line record this season, while the Brewers (+143) hold a record of 65-60.
- The Mariners have a 60-57-8 O/U record this season (meaning 60 games have gone over the total runs line, 57 have gone under and eight have resulted in a push). The Brewers have a 53-69-3 O/U record.
Scoring Insights
- The Mariners are averaging 3.9 runs per game this season (29th in the league). Comparatively, the Brewers are averaging +1.0 more at 4.9 runs (5th).
- In the field, the Mariners are allowing 4.1 runs per game this season (7th in the league), while the Brewers are allowing an average of 3.8 runs (3rd).
Let's take a look at how these teams perform in some other key statistical areas.
Batting Insights:
Batting Average
- Looking at their batting averages this season, the Mariners are at .230 (ranking 28th in the Major leagues), while the Brewers are batting .250 (7th).
Home Runs
- In terms of total home runs this season, the Brewers have hit 113 (30th in the Major Leagues). Meanwhile, the Mariners have managed 145 (16th).
Runs Batted In
- Finally, looking at their runs batted in, the Mariners have recorded 473 RBIs to rank 28th in the MLB this season. Comparatively, the Brewers have recorded 573 RBIs to rank 7th.
Pitching Insights:
Earned Run Average
- The Brewers have an earned run average of 3.46 this season (2nd in the Majors), while The Mariners have an ERA of 3.85 (9th).
Strikeouts
- Turning our attention to total strikeouts, the Mariners have recorded 1060 this season, ranking 13th in the MLB. Meanwhile, the Brewers rank 2nd for total strikeouts, recording 1211.
Opponent Batting Average
- Opponents are batting an average of .219 against the Brewers this season (2nd in the Major Leagues). Comparatively, the Mariners' opponents are at .244 (18th).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Mariners | 29-31-65 | 17-14-31 | 12-17-34 | 25-23-51 | 4-8-14 | 0-0-0 | 4-2-4 |
| Brewers | 31-26-68 | 20-12-31 | 11-14-37 | 27-19-50 | 4-7-18 | 0-0-0 | 3-1-6 |
Lead After Three Innings
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Mariners | 50-46-29 | 28-20-14 | 22-26-15 | 38-36-25 | 12-10-4 | 0-0-0 | 6-3-1 |
| Brewers | 52-44-29 | 28-18-17 | 24-26-12 | 39-33-24 | 13-11-5 | 0-0-0 | 6-3-1 |
NRFI/YRFI
The NRFI market is paying -130 and the YRFI is paying +100.
- The NRFI is 60-65 in Mariners games this season. The Brewers have a 67-58 NRFI record.
Last Time They Met
The Brewers recorded a lopsided 10-2 victory against the Mariners at T-Mobile Park when these teams last met on July 23, 2025. Brice Turang went yard en route to that victory, hitting a home run to go with 3 RBIs.
