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MLB · Saturday, August 15, 2026

St. Louis Cardinals @ Chicago Cubs

Graded — this page is the complete record.

The lean (0 units — logged, not staked)

Chicago Cubs -1.5 run line · confidence 45.0% of 10,000 sims · edge -4.2 pts · 0u

Michael McGreevy (3.64 ERA, 1.22 WHIP) vs Matthew Boyd (3.50 ERA, 1.22 WHIP).

Projected 4.2–5; sim total 9.3 against a 9 line; park factor 1.02.

Market at board time: moneyline +160 / -178 (consensus at board time) · total 9.

Circuit-breaker log (7 checks)
  • Rule 2 fired: market line -176 exceeds the day-game juice cap (-170): pivoted off the moneyline to CHC -1.5 (covers 45.0% of sims).
  • Rule 8 check passed: raw model 56.8% vs de-vigged market 62.5%: 5.7-point divergence within the 12-point cap (blended to 45.0% at MODEL_WEIGHT=0.5).
  • Edge gate: model edge vs offered price is -4.1 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 0.314 vs league 0.315 (gap +0.000, threshold 0.035).
  • Rules 3/5 (velocity/spin telemetry): manual review required: Statcast feed not wired.
  • Weather (totals paper track ONLY): 76°F at first pitch: run environment x1.026. Applied to the paper totals pick; the staked board ignores weather entirely.

👁 Watch (market-proving, 0u): Under 9 (-114, BetRivers) · model 56.3% · edge +3.0 pts · divergence +5.1 pts

Open vs close

MarketBoard timeClose
Moneyline (away / home)+160 / -178+162 / -182
Total99 (o+100 / u-120)

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.

❌ Watch pick (market-proving, paper, 0u staked): Under 9 (-114, BetRivers) — LOSS (-1.00u paper).

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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