MLB Grade — 2026-08-28

How the 2026-08-28 predictions scored against actual results

Cumulative Δlog-loss vs always-pick-home: -0.0201 ± 0.0092 per game over 182 games (paired; negative = beating the baseline - currently ahead).

YesterdayCorrectLog-loss
model12/150.636
always-pick-home7/150.700

Daily detail: 80% hit rate · Brier 0.222 · avg margin error 2.8 · avg total-runs error 3.9. Running: 108/182 (59.3%) · cumulative log-loss 0.670 · cumulative Brier 0.239

GamePickPredictedActual
✅Orioles @ AthleticsOrioles (52%)5–4.53–4 (home first)
✅Rockies @ BravesBraves (67%)5.3–3.86–4 (home first)
❌Reds @ CubsCubs (63%)5.1–48–10 (home first)
❌Royals @ GuardiansGuardians (56%)4.6–4.20–3 (home first)
✅Dodgers @ TigersDodgers (57%)4.8–3.81–2 (home first)
✅Phillies @ AngelsPhillies (53%)4.6–43–5 (home first)
✅Rangers @ BrewersBrewers (67%)5.1–3.56–1 (home first)
✅White Sox @ TwinsWhite Sox (51%)4.8–4.44–7 (home first)
✅Astros @ MetsAstros (50%)4.6–4.31–3 (home first)
✅Red Sox @ YankeesYankees (57%)4.5–41–0 (home first)
✅Diamondbacks @ GiantsDiamondbacks (53%)4.7–46–10 (home first)
✅Pirates @ CardinalsCardinals (53%)4.5–4.44–1 (home first)
✅Padres @ RaysRays (54%)4.3–4.29–4 (home first)
✅Mariners @ Blue JaysBlue Jays (57%)4.6–4.18–1 (home first)
❌Marlins @ NationalsMarlins (51%)4.6–4.29–2 (home first)

The headline is the paired per-game log-loss difference against a fixed always-pick-home forecast (p=0.534) on the same games, ± one standard error; daily hit rate is noisy and demoted on purpose. Reference points: 0.693 is a coin flip; the model's walk-forward backtest runs 0.680 (research/SP-BACKTEST.md).

Betting-blind Elo model (K=3, +24 home, MOV-weighted, 60% season carryover) · Can Tre Beat Vegas · whosyurgoat.app/vegas/mlb