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MLB · Saturday, September 12, 2026

Pittsburgh Pirates @ Chicago Cubs

Graded — this page is the complete record.

The lean (0 units — logged, not staked)

Chicago Cubs ML (-120, Fanatics) · confidence 53.7% of 10,000 sims · edge -0.9 pts · 0u

Paul Skenes (3.83 ERA, 1.15 WHIP) vs Clay Holmes (2.83 ERA, 1.12 WHIP).

Projected 4.4–5; sim total 9.3 against a 9.5 line; park factor 1.02.

Market at board time: moneyline +105 / -122 (consensus at board time) · total 9.5.

Circuit-breaker log (7 checks)
  • Rule 2 check passed: market line -120 within the day-game juice cap (-170; night -180, day -170, day = first pitch before 17:00 venue-local).
  • Rule 8 check passed: raw model 54.4% vs de-vigged market 53.0%: 1.4-point divergence within the 12-point cap (blended to 53.7% at MODEL_WEIGHT=0.5).
  • Edge gate: model edge vs offered price is -0.9 pts (minimum 2). No allocation; a good side at a bad price is a bad bet.
  • Rule 4 check passed: both starters carry full-season workloads.
  • Rule 6 check passed: away 14-day wOBA 0.331 vs league 0.319 (gap -0.012, threshold 0.035).
  • Rules 3/5 (velocity/spin telemetry): manual review required: Statcast feed not wired.
  • Weather (totals paper track ONLY): 85°F at first pitch: run environment x1.062 + 5% hot-day kicker vs away SP fly-ball (56% air outs). Applied to the paper totals pick; the staked board ignores weather entirely.

Open vs close

MarketBoard timeClose
Moneyline (away / home)+105 / -122+106 / -125
Total9.59.5 (o-113 / u-105)

The close is the last pre-first-pitch capture. Movement toward a side after we post is the fastest honest read on pick quality — see the CLV column on the ledger.

No stake rode on this game. The lean and its failed gates above are the whole position: passing is a position too.

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