MLB matchup analysis

Mariners vs Brewers Prediction, Odds and Model Pick

Wednesday, August 19, 2026 at American Family Field · 7:40 PM ET

Pass

LyDia decision: Pass on Mariners vs Brewers

Lab Rating
5.0/10
Model lean
Mariners 69.0%
Market probability
46.8%
Model edge
+22.3%
Best moneyline
+110
Sportsbooks checked
9
LyDia model
69.0%
Market
46.8%

The case for Seattle Mariners

Starting pitcher edge: 13 points
LyDia gives Logan Gilbert a 13-point edge over Dustin May, driven mainly by WHIP (0.99 vs 1.25) and K-BB% (20.8% vs 15.2%).

The case for Milwaukee Brewers

Late-inning bullpen advantage
Seattle Mariners relievers have a 12.27 ERA over the last 7 days; Milwaukee Brewers relievers have a 2.00. If this is still close after six innings, that gap favors Milwaukee Brewers.
Team strength favors Milwaukee Brewers
Before any pitcher or bullpen adjustment, LyDia's own team-strength model has Milwaukee Brewers ahead (62.6% to 37.4%). The pick still comes from Seattle Mariners once the pitcher and bullpen terms are applied.

Why it is not official

Setup quality below the bar
Lab Rating is 5.0/10, under the 8.0/10 required for an official pick.
Own bullpen carries risk: 7.4/10
The Seattle Mariners bullpen comes in tired. A lead after six innings is less safe than usual.
Cold stretch at the plate
Seattle Mariners is -0.013 wOBA below its own season form.

Why the setup score is what it is

Conviction: 20/20
LyDia's win probability for Seattle Mariners (69.0%) is well clear of a coin flip -- this is a real, stated lean, not a guess.
Pitching plan: 13/20
Logan Gilbert rates 13 points better than Dustin May on LyDia's pitcher score. That is a real edge, and it earns most or all of the available credit here.
Bullpen: 5.26/20
LyDia does not see a meaningful bullpen edge for Seattle Mariners here.
Offense: 11.25/40
Seattle Mariners's recent form does not clearly outpace Milwaukee Brewers's.

Why the price is what it is

Team strength: 37.4%
Before any pitcher or bullpen adjustment, LyDia's team-strength model alone makes Seattle Mariners 37.4% to win. Everything below moves the price from this starting point.
Pitcher score gap: 13 points
The pitcher-score gap favors Seattle Mariners by 13 points. This is the biggest single mover of the price -- a large gap moves it a lot, a small gap barely moves it.
Bullpen adjustment: -0.087
The bullpen-fatigue gap between the two pens nudges the price toward Milwaukee Brewers. This moves the price less than the starting pitchers do, since a starter covers more of the game than the bullpen.
Net effect: 37.4% -> 69.0%
Team strength alone had Seattle Mariners at 37.4%. After the pitcher and bullpen terms, the price is 69.0% -- the same number shown as Model Lean above.
The verdict LyDia passes. The combined Lab Rating did not clear the official threshold.
Read the full model output

The combined Lab Rating did not clear the official threshold.

Game information

MatchupSeattle Mariners at Milwaukee Brewers
DateWednesday, August 19, 2026
First pitch7:40 PM ET
VenueAmerican Family Field
Starting pitchersLogan Gilbert vs Dustin May
WeatherGame-time forecast: 72°F, 0% precipitation chance, 5 mph wind from E. This venue has a roof, but the roof status is not confirmed.

Starting pitcher matchup

Full Pitcher Matchup Tool →
Logan GilbertMariners · RHP
vs
Dustin MayBrewers · RHP
MetricMarinersBrewers
Pitching planTraditional starterTraditional starter
Expected innings65⅓
ThrowsRR
LyDia pitcher score (higher is better)7865
ERA (lower is better)3.284.13
WHIP (lower is better)0.991.25
K/9 (higher is better)9.48.6
K-BB% (higher is better)20.8%15.2%
K% (higher is better)26.6%23.1%
BB% (lower is better)5.8%7.9%
BB/9 (lower is better)2.03.0
HR/9 (lower is better)1.20.7
Ground-ball rate41.9%47.2%
Fly-ball rate58.1%52.8%

Pitcher edge: LyDia gives Logan Gilbert a 13-point edge over Dustin May, driven mainly by WHIP (0.99 vs 1.25) and K-BB% (20.8% vs 15.2%).

How to read this: the scorecards above name the starters; every number lives in this table. Highlighted cells mark a gap big enough to matter. K% and BB% are strikeout and walk rate as a share of batters faced -- K-BB% is the two combined into one skill number. HR/9 is home runs allowed per nine innings. Ground-ball and fly-ball rate are neither good nor bad on their own: high ground-ball pitchers trade strikeouts for double plays and fewer home runs, and on this data source the two rates are complementary (they add to 100%), not independent reads.

Strikeout Projections Full strikeout projections →

Logan Gilbert strikeouts
6.6 LyDia projected Ks
No K play · +0.1K difference is below LyDia's 0.7K threshold
Market 6.5K · O -108 / U -115 · 6 books
Dustin May strikeouts
5.0 LyDia projected Ks
No K play · -0.5K difference is below LyDia's 0.7K threshold
Market 5.5K · O +110 / U -125 · 6 books

Same data source as the Pitcher Matchup Tool, where every starter on the slate is compared side by side.

Mariners are 3-7 in their last 10, averaging 2.7 runs per game over the last 15 days, and hitting below their season form; Brewers are 6-4 in their last 10 and averaging 5.1 runs per game over the last 15 days. On the season Brewers carry the better run differential per game (+1.25 against -0.36).

MetricMarinersBrewers
Last 103-76-4
Last 10 by venue (away team on the road, home team at home)4-6 on the road8-2 at home
OPS, last 15 days0.6550.730
wOBA, last 15 days (hot/cold read)0.2920.323
Runs per game, last 15 days2.75.1
K% last 15 days (lower is better)22.9%25.7%

Last 15 days only. Hot and cold streaks for all 30 teams live on the Stats page.

30-day offense

Full offense tool →
Last 30 daysMarinersBrewers
OPS0.6820.734
Runs per game3.35 (-0.535 vs szn)4.74 (-0.259 vs szn)
wOBA (model offense input)0.3020.325
K% (lower is better)22.6%23.1% (+1.5% vs szn)

Over the last 30 days the Brewers have been the better offense, 0.325 wOBA to 0.302.

Season profile

Full Stats page →
MetricMarinersBrewers
Record59-6778-48
Run differential / game (team quality)-0.36+1.25
Runs scored / game (offense, season)3.885.00
Runs allowed / game (defense, season, lower better)4.243.75
Season OPS0.6860.733
K% season (lower is better)23.0%21.6%
OPS vs opposing hand (season)0.7050.748

Season-long team quality, not recent form. Run differential and run environment come from the season standings; splits for all 30 teams live on the Stats page, including the run environment table.

Every team on today's slate, on any two axes you pick. Mariners and Brewers are highlighted.

Mariners
Combined risk
7.4 Tired
Fatigue
5.5 Normal
Efficiency
1.3 Struggling
Brewers
Combined risk
4.5 Normal
Fatigue
5.4 Normal
Efficiency
6.9 Effective

Risk is what the model actually uses: fatigue blended with how well the pen has pitched. High fatigue with high efficiency is a tired pen that is still getting outs.

MetricMarinersBrewers
Fatigue5.5/10, Normal5.4/10, Normal
Efficiency1.3/10, Struggling6.9/10, Effective
Combined risk7.4/10, Tired4.5/10, Normal
Relief innings, last 7 days18.318.0
Back-to-back arms46
7-day ERA12.272.00
7-day WHIP2.130.94

Fatigue measures workload. Efficiency measures recent run prevention. Combined risk is what the moneyline and totals systems use.

Run total projection

Full Totals Projections →
LyDia projection
6.8
Market total
7.0
Projected away runs
1.9
Projected home runs
4.9
Over price
-108
Under price
-102
Seattle Mariners team total
1.9 projected
Line 3.5 · O +105 / U -120
Under research lean (-1.6)
Milwaukee Brewers team total
4.9 projected
Line 3.5 · O -105 / U -110
Over research lean (+1.4)

The model and market are close. Team totals remain research-only until their graded sample is established.

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