John-Z's Overlay · Trifecta ATM

Fri, May 29

Race 9

Md 50000

Post: 4:55 · 1m · Turf · $67K purse · 11 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

11 runners

Contested pace

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

3 EP — early/presser 4 P — presser 2 S — closer 2 Unclassified

Projected speed

2 of 11 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 1, 8, 7, 13

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

Cost

$6.00

6 combos

Hit prob

2.4%

simulated

Typical payout if hit

$42.20

mean $73.18

Expected ROI

-71.0%

net $-4.26

  • · Most-likely-to-cash structure: 1×3×3 key (top pick) on posts [1, 8, 7, 13] — hits 2.4% of simulated runs
  • · At $6 stake, a typical cash pays ≈ $42 (mean $73; 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

1, 8

B Contenders

7, 13, 9

C Value-edge longshots

12, 14

Other ticket structures (5)
Ticket Cost Hit prob Typical payout ROI
3-horse box $6.00 2.6% $38.63 -83%
2×4×4 part wheel $12.00 4.7% $38.63 -72%
1×4×4 key (top pick) $12.00 4.3% $41.79 -74%
1×5×5 key (top pick) $20.00 6.0% $42.20 -76%
4-horse box $24.00 7.9% $45.55 -69%

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: 50% · Top 4 cover 1.51 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
1APDARING MADISON4.0-13.9-176.317%48%·-3%
8AEPRACONTEUSE3.0-13.3-178.017%47%-17%
7BPDEBBY'S GAL6.0-18.4-170.09%28%-8%
13BPLADY FAYE15-123-171.19%28%+12%
9BEPSUDDEN SQUALL8.0-18.3-169.09%27%·-1%
11SHAYWINII8.0-111-167.57%22%-6%
5EPRIBADEO8.0-113-167.37%21%-7%
14CMOTHER LODE20-148-166.76%20%+8%
10SMARKET STRATEGY20-130-162.86%20%+8%
12CPROTISSERIE30-150-164.16%20%+11%
6LUCKY TO DANCE20-139-167.56%18%+6%
2SCRTRAMUNTANA8.0-1
3SCRSPEIGHTSY RIVAL20-1
4SCREHOWYOUDOSOMETHING12-1
15SCRENGLISH HARBOUR10-1
16SCREPMODERN ESCAPE12-1

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 · Fri, May 29 · 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.