John-Z's Overlay · Trifecta ATM

Fri, May 22

Race 9

Alw 50000s

Post: 4:55 · 1m · Turf · $83K purse · 7 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

7 runners

Contested pace

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

1 E — pure early 2 EP — early/presser 3 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 3, 4, 1

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

Cost

$6.00

6 combos

Hit prob

7.8%

simulated

Typical payout if hit

$80.60

mean $81.15

Expected ROI

+5.9%

net $0.35

  • · Most-likely-to-cash structure: 3-horse box on posts [3, 4, 1] — hits 7.8% of simulated runs
  • · At $6 stake, a typical cash pays ≈ $81 (mean $81; trifecta payoffs are heavy-tailed). Estimated from the public pool, validated against archive payoffs.
  • · Multiple legitimate contenders — model is less concentrated.

A Top picks

3

B Contenders

4, 1, 8

C Value-edge longshots

5, 9

Other ticket structures (5)
Ticket Cost Hit prob Typical payout ROI
1×3×3 key (top pick) $6.00 6.6% $69.28 -11%
2×4×4 part wheel $12.00 12.7% $69.28 -13%
A key, B in 2nd, A+B+C in 3rd $12.00 11.0% $70.77 -16%
4-horse box $24.00 21.8% $74.12 -8%
1×4×4 key (top pick) $12.00 11.6% $49.83 -51%

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: 66% · Top 4 cover 1.99 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
3APUTOPIAN6.0-17.5-180.923%61%+25%
4BPGARRYOWEN8.0-18.5-179.019%55%+26%
1BSSOUND CAUSE15-119-175.415%45%+30%
8BEPLUCKY MISCHIEF10-116-175.812%38%+15%
7EPMARY'S BOY BOLT4.5-16.4-174.412%37%-9%
5CPTIZ FREEDOM12-118-175.611%35%+16%
9CEMAKUTU12-120-167.79%28%+9%
2SCREPTHE DOVER SPECTER3.5-1
6SCREPRAZORCAT8.0-1
10SCRSSNARE4.0-1
11SCREPGENE AND JUDE2.0-1
12SCREPTAUNTING12-1
13SCRSSURVIVIN'ONAPRAYER20-1
14SCRSBEST KNOWN SECRET30-1

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 22 · 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.