MLB Grade — 2026-08-24

How the 2026-08-24 predictions scored against actual results

Cumulative Δlog-loss vs always-pick-home: -0.0270 ± 0.0107 per game over 130 games (paired; negative = beating the baseline - currently ahead).

YesterdayCorrectLog-loss
model6/100.684
always-pick-home3/100.723

Daily detail: 60% hit rate · Brier 0.245 · avg margin error 4.7 · avg total-runs error 3.7. Running: 78/130 (60.0%) · cumulative log-loss 0.662 · cumulative Brier 0.235

GamePickPredictedActual
✅Cubs @ DiamondbacksCubs (52%)5–4.40–7 (home first)
✅Twins @ AthleticsTwins (51%)4.9–4.56–9 (home first)
❌Rangers @ White SoxWhite Sox (58%)4.6–42–11 (home first)
✅Rays @ TigersRays (50%)4.6–4.31–4 (home first)
✅Guardians @ AngelsGuardians (57%)4.6–3.62–4 (home first)
✅Red Sox @ MarlinsRed Sox (53%)4.6–4.12–4 (home first)
❌Pirates @ PadresPadres (57%)4.7–4.22–3 (home first)
❌Phillies @ MarinersPhillies (51%)4.8–4.49–2 (home first)
❌Reds @ GiantsReds (51%)4.6–4.15–0 (home first)
✅Rockies @ NationalsNationals (62%)5.3–4.313–3 (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