John-Z's Overlay · Trifecta ATM

Mon, May 25

Race 3

Alw 127000n1x

Post: 1:43 · 1.38m · Turf · $127K 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

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 1 S — closer 1 Unclassified

Projected speed

1 of 7 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.

1×3×3 key (top pick) on posts 4, 7, 3, 5

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

Cost

$6.00

6 combos

Hit prob

7.6%

simulated

Typical payout if hit

$7.31

mean $16.05

Expected ROI

-79.6%

net $-4.78

  • · Most-likely-to-cash structure: 1×3×3 key (top pick) on posts [4, 7, 3, 5] — hits 7.6% of simulated runs
  • · At $6 stake, a typical cash pays ≈ $7 (mean $16; trifecta payoffs are heavy-tailed). Estimated from the public pool, validated against archive payoffs.
  • · Multiple legitimate contenders — model is less concentrated.

A Top picks

4

B Contenders

7, 3, 5

C Value-edge longshots

2, 6

Other ticket structures (5)
Ticket Cost Hit prob Typical payout ROI
3-horse box $6.00 8.3% $7.80 -88%
1×4×4 key (top pick) $12.00 13.5% $7.31 -76%
A key, B in 2nd, A+B+C in 3rd $12.00 13.1% $7.31 -77%
2×4×4 part wheel $12.00 14.4% $9.05 -77%
1×5×5 key (top pick) $20.00 19.4% $22.42 -73%

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: 69% · Top 4 cover 2.08 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
4AEWORRY BE GONE1.6-11.2-186.222%61%-37%
7BPLAZA ATHENEE3.0-12.8-182.218%53%-11%
3BEPSNIPSNIPPITYSNIP2.0-12.2-183.717%50%-35%
5BSMALIBU SMART15-118-182.014%44%+28%
2CEPENSORCELL8.0-18.7-180.913%40%+12%
6CEPORAIA10-113-179.510%34%+11%
1PMINT DRIVEN30-154-169.15%18%+10%

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 3 · Mon, May 25 · 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.