John-Z's Overlay · Trifecta ATM

Sun, May 3

Race 9

OClm 55000n1x

Post: 5:17 · 1.13m · Turf · $88K purse · 9 runners

New — Ask Claude Opus about this race Why a horse rates the way it does, what the trifecta ticket means, where the public might be wrong.

Pace shape

9 runners

Contested pace

4 early types — pace should be honest but not crazy. No strong style bias.

1 E — pure early 3 EP — early/presser 1 P — presser 2 S — closer 2 Unclassified

Projected speed

2 of 9 runners have no BRIS run-style code (often first-time starters); narrative may understate the true pace.

Trifecta shape

Competitive

Model has no clear edge — every ticket structure is steeply negative-EV. Skip, or treat as an entertainment bet and size accordingly.

1×4×4 key (top pick) on posts 9, 2, 8, 7, 6

The model's most-likely-to-cash structure (informational — not a bet recommendation).

Cost

$12.00

12 combos

Hit prob

11.5%

simulated

Typical payout if hit

$67.07

mean $95.99

Expected ROI

-8.1%

net $-0.97

  • · Most-likely-to-cash structure: 1×4×4 key (top pick) on posts [9, 2, 8, 7, 6] — hits 11.5% of simulated runs
  • · At $12 stake, a typical cash pays ≈ $67 (mean $96; trifecta payoffs are heavy-tailed). Estimated from the public pool, validated against archive payoffs.
  • · Multiple legitimate contenders — model is less concentrated.

A Top picks

9

B Contenders

2, 8, 7

C Value-edge longshots

Other ticket structures (5)
Ticket Cost Hit prob Typical payout ROI
3-horse box $6.00 8.3% $57.03 -16%
1×3×3 key (top pick) $6.00 7.4% $54.94 -21%
2×4×4 part wheel $12.00 13.9% $50.93 -33%
3×5×5 part wheel $36.00 30.6% $72.67 -15%
2×5×5 part wheel $24.00 21.1% $57.03 -25%

Hit prob is the model's per-race PL distribution. "Typical payout" is the median cash, weighted by the public pool's odds (not the model's own picks) and calibrated to actual historical trifecta payoffs — so it reflects what the tote really pays, not the model's disagreement. Walk-forward backtests show pari-mutuel takeout (~16-26%) is too steep to consistently clear at this data scale — these are tipsheet outputs, not bet recommendations.

Top-4 ITM concentration: 68% · Top 4 cover 2.05 of the 3.00 expected ITM finishers

Field

Click any horse name for the per-horse breakdown (last-10-races chart, SHAP feature contributions, full PP table).

PP Horse ML Pred Close Pred Fig Win ITM% Edge
9ASPROTECTIVE CUSTODY4.0-14.5-179.622%59%+8%
2BPGETTING SERIOUS3.0-13.0-176.418%52%-12%
8BEPSALT PRINCESS8.0-18.6-177.318%51%+23%
7BSOUL DANCE5.0-16.3-177.814%43%·+1%
6EPPATTY CAKES10-118-175.89%30%+7%
4SWISS MOON2.5-13.1-172.18%28%-45%
3SHIDDEN ROSE8.0-112-167.37%25%·-4%
5ECREATIVE STUFF30-174-161.72%7%·-1%
1EPHAUNTRESS30-182-157.21%5%·-3%
10SCREPROMANTIC DANCER1.8-1
11SCRPI'M BUZZY1.6-1

Sort the table by clicking column headers. Edge = our predicted ITM% minus the public-implied ITM% (live odds when present, ML otherwise); green ▲ ≥ +5pp, red ▼ ≤ −5pp. See How to Use for the math.

Ask Claude Opus

Questions about the model's predictions for Race 9 · Sun, May 3 · Belmont at The Big A. Powered by Claude Opus 4.7.

Ask anything about the field, the trifecta ticket, or why the model rates a horse the way it does.

Limited to 30 questions per day per visitor. Answers are model-generated and may be incorrect — not betting advice.