MLB Grade — 2026-09-24

How the 2026-09-24 predictions scored against actual results

Cumulative Δlog-loss vs always-pick-home: -0.0222 ± 0.0065 per game over 427 games (paired; negative = beating the baseline - currently ahead).

YesterdayCorrectLog-loss
model7/120.691
always-pick-home4/120.718

Daily detail: 58% hit rate · Brier 0.249 · avg margin error 2.3 · avg total-runs error 4.3. Running: 253/427 (59.2%) · cumulative log-loss 0.670 · cumulative Brier 0.239

GamePickPredictedActual
✅Astros @ AthleticsAstros (57%)5.1–4.15–7 (home first)
❌Reds @ BravesBraves (63%)5–3.96–7 (home first)
❌Guardians @ Red SoxRed Sox (58%)4.5–3.90–1 (home first)
✅Marlins @ CubsCubs (60%)5.2–4.32–1 (home first)
✅Diamondbacks @ RockiesDiamondbacks (63%)5.5–3.88–12 (home first)
✅White Sox @ RoyalsWhite Sox (51%)4.8–4.41–9 (home first)
❌Padres @ DodgersDodgers (56%)4.6–4.22–4 (home first)
✅Rays @ YankeesYankees (59%)4.6–3.96–4 (home first)
✅Brewers @ PhilliesBrewers (57%)5–41–5 (home first)
✅Cardinals @ PiratesPirates (57%)4.7–4.22–1 (home first)
❌Angels @ MarinersMariners (64%)5–3.74–6 (home first)
❌Mets @ RangersMets (51%)4.7–4.33–1 (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

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