John-Z's Overlay · Trifecta ATM

Sun, May 10

Race 7

Md 100000

Post: 3:51 · 7f · Dirt · $72K purse · 10 runners · LIVE Trifecta math uses live odds for 10 of 10 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

10 runners

Speed duel

6 early types and no pressers or closers in the field — expect a fast, attritional pace where the fittest E/EP survives. No style edge.

4 E — pure early 2 EP — early/presser 4 Unclassified

Projected speed

4 of 10 runners have no BRIS run-style code (often first-time starters); narrative may understate the true pace.

Trifecta shape

Wide open

Lottery shape — low hit rates, larger payouts when they cash. Entertainment-only; the model is not confident in any structure.

1×3×3 key (top pick) on posts 7, 1, 5, 2

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

Cost

$6.00

6 combos

Hit prob

3.9%

simulated

Typical payout if hit

$25.54

mean $41.27

Expected ROI

-73.5%

net $-4.41

  • · Most-likely-to-cash structure: 1×3×3 key (top pick) on posts [7, 1, 5, 2] — hits 3.9% of simulated runs
  • · At $6 stake, a typical cash pays ≈ $26 (mean $41; trifecta payoffs are heavy-tailed). Estimated from the public pool, validated against archive payoffs.
  • · Wide-open shape — anyone could hit; longshots have room.

A Top picks

7, 1

B Contenders

5, 2, 6

C Value-edge longshots

11, 10

Other ticket structures (5)
Ticket Cost Hit prob Typical payout ROI
3-horse box $6.00 4.9% $25.54 -80%
1×4×4 key (top pick) $12.00 6.5% $25.54 -66%
2×4×4 part wheel $12.00 7.6% $25.54 -73%
A key, B in 2nd, A+B+C in 3rd $30.00 10.5% $72.36 -43%
1×5×5 key (top pick) $20.00 9.6% $25.54 -74%

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: 58% · Top 4 cover 1.73 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 Live Pred Fig Win ITM% Edge
7AEAUTHENTIC PATRIOT1.2-10.9-11.6-184.319%52%-46%
1AEROCK MUSIC4.0-13.0-11.8-180.518%51%-41%
5BEPDISCOTHEQUE6.0-16.2-18.0-177.913%38%+10%
2BBARRACKS15-114-121-172.810%32%+20%
6BACCORD15-116-125-174.49%29%+19%
3EPBUNTUS FOCLORA8.0-16.9-16.0-175.09%28%-8%
4PELICAN HILL10-19.5-1·9.0-169.97%23%·-3%
11CETORRE EIFFEL20-130-132-173.36%21%+13%
10CSTORMIEST30-174-161-166.94%14%+10%
9ESOHO JIMMY30-166-142-162.04%12%+6%
8SCRPBLESSED WARRIOR20-1

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. Live column: ↓ green = ≥25% shorter than ML (money horse); ↑ red = ≥25% longer (drifting). See How to Use for the math.

Ask Claude Opus

Questions about the model's predictions for Race 7 · Sun, May 10 · 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.

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