John-Z's Overlay · Trifecta ATM

Sun, May 24

Race 8

OClm 80000n2x

Post: 4:23 · 1.06m · Dirt · $134K purse · 6 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

6 runners

Contested pace

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

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

Projected speed

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.

3-horse box on posts 5, 1, 6

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

Cost

$6.00

6 combos

Hit prob

7.0%

simulated

Typical payout if hit

$18.79

mean $26.89

Expected ROI

-68.7%

net $-4.12

  • · Most-likely-to-cash structure: 3-horse box on posts [5, 1, 6] — hits 7.0% of simulated runs
  • · At $6 stake, a typical cash pays ≈ $19 (mean $27; trifecta payoffs are heavy-tailed). Estimated from the public pool, validated against archive payoffs.
  • · Multiple legitimate contenders — model is less concentrated.

A Top picks

5

B Contenders

1, 6, 4

C Value-edge longshots

3

Other ticket structures (5)
Ticket Cost Hit prob Typical payout ROI
1×3×3 key (top pick) $6.00 7.5% $16.82 -79%
A key, B in 2nd, A+B+C in 3rd $9.00 11.3% $18.79 -76%
2×4×4 part wheel $12.00 13.2% $18.79 -74%
1×4×4 key (top pick) $12.00 15.0% $19.67 -75%
1×5×5 key (top pick) $20.00 23.9% $19.98 -75%

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: 70% · Top 4 cover 2.09 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
5APBEING MYSELF1.2-10.8-188.724%64%-36%
1BEANNA'S PROMISE3.5-14.7-185.616%49%-8%
6BSSIERRA NOVEMBER6.0-17.4-182.816%48%+12%
4BEPUNION MIST4.5-15.6-182.215%48%·+1%
3CEPAMARTH8.0-18.8-184.215%47%+19%
2EFORESEEN5.0-17.1-183.114%44%·+2%

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 8 · Sun, May 24 · Churchill Downs. 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.