The Milwaukee Brewers host the Seattle Mariners on August 20, 2026. First pitch from American Family Field is scheduled for 2:10 p.m. EDT. The game will be broadcast on BREW.
The Brewers are favored by -124 on the moneyline and by -1.5 on the run line. The Mariners are +114 on the moneyline and +1.5 on the run line. The total is set at 8 runs.
Find our MLB picks and Mariners vs Brewers prediction below, as well as probable pitchers, weather report, and more.
Mariners vs Brewers Prediction
- Mariners vs Brewers Pick: Under 8 (-110)
Our Mariners vs Brewers best bet is on the under total runs. Make sure to find the best odds by checking our live MLB odds page.
Mariners vs Brewers Odds
| Mariners Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
+1.5 -200 | 8 -110o / -110u | +114 |
| Brewers Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
-1.5 +164 | 8 -110o / -110u | -124 |
- Mariners vs Brewers moneyline: Mariners +114, Brewers -124
- Mariners vs Brewers over/under: 8 (-110o / -110u)
- Mariners vs Brewers spread: Brewers -1.5 (+164), Mariners +1.5 (-200)
Mariners vs Brewers Probable Pitchers
| George Kirby (RHP, SEA) | Stat | Robert Gasser (LHP, MIL) |
|---|---|---|
| 8-9 | W-L | 3-5 |
| 2.1 | fWAR (FanGraphs) | 0.7 |
| 3.89/3.83 | ERA / xERA | 4.54/4.21 |
| 3.78/3.90 | FIP / xFIP | 4.60/4.26 |
| 14.6% | K-BB% | 15.6% |
| 44.0% | GB% | 32.3% |
| .326 | BABIP | .285 |
| 101 | Stuff+ | 105 |
| 111 | Location+ | 95 |
Mariners vs Brewers MLB Betting Preview
The Seattle Mariners (60-67) head to Milwaukee for a Thursday afternoon clash against the National League Central-leading Milwaukee Brewers (78-49) to settle their regular-season series.
Milwaukee holds a dominant 42-23 record at home, fueled by an offense that leads Major League Baseball with a .337 team on-base percentage.
Meanwhile, Seattle has struggled on the road with a 27-38 mark, though their pitching staff remains a bright spot with a 3.98 ERA that ranks sixth in the American League.
Seattle sends George Kirby (8-9, 3.89 ERA, 1.31 WHIP, 114 Ks) to the mound. Kirby enters this outing just 5 strikeouts shy of tying Erik Hanson (740) for 8th on the Mariners' all-time strikeout leaderboards.
Milwaukee counters with left-hander Robert Gasser (3-5, 4.54 ERA, 1.24 WHIP, 68 Ks), who is coming off a grinding quality start against the Dodgers where he threw a career-high 102 pitches.
Mariners vs Brewers Pick, Betting Analysis
The pick for Thursday’s matchup is Under 8 total runs. This play heavily leverages the "Unders with Soft Starters and Neutral Winds" betting system developed by Evan Abrams.
The strategy targets regular-season games in the late stages of a series—such as this game three rubber match—where a home starter with softer overall metrics like low strikeout numbers and a moderate WHIP takes the hill.
By Game 3, both lineups have logged extensive plate appearances against the opposing pitching staff and updated their scouting reports.
Despite that familiarity, run production typically dries up when the home starter lacks electric, overpowering velocity and the stadium environment does not feature heavy directional winds that artificially boost fly balls.
Milwaukee’s Robert Gasser fits this soft-pitcher profile precisely, while American Family Field provides controlled, neutral conditions that limit sudden offensive standard deviations.
With the home team balancing the weight of a long season grind, the market tends to overvalue baseline hitting numbers and underprice how often these specific conditions lead to slow-paced, low-scoring contests.
Expect both pitching staffs to control the damage and keep the overall score Under 8 runs.
Pick: Under 8 (-110)
