John-Z's Overlay · Trifecta ATM

Sun, May 3

Race 6

Md Sp Wt

Post: 3:31 · 5f · Turf · $68K 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

Unprojectable

5 of 7 runners have no BRIS run-style code (likely first-time starters) — pace shape can't be called.

1 E — pure early 1 S — closer 5 Unclassified

Projected speed

5 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.

3-horse box on posts 1, 5, 3

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

Cost

$6.00

6 combos

Hit prob

8.9%

simulated

Typical payout if hit

$11.86

mean $13.89

Expected ROI

-79.4%

net $-4.76

  • · Most-likely-to-cash structure: 3-horse box on posts [1, 5, 3] — hits 8.9% of simulated runs
  • · At $6 stake, a typical cash pays ≈ $12 (mean $14; trifecta payoffs are heavy-tailed). Estimated from the public pool, validated against archive payoffs.
  • · Multiple legitimate contenders — model is less concentrated.

A Top picks

1

B Contenders

5, 3, 2

C Value-edge longshots

4

Other ticket structures (5)
Ticket Cost Hit prob Typical payout ROI
1×3×3 key (top pick) $6.00 9.3% $11.16 -82%
A key, B in 2nd, A+B+C in 3rd $9.00 13.3% $11.16 -77%
1×4×4 key (top pick) $12.00 17.2% $11.37 -73%
2×4×4 part wheel $12.00 16.4% $11.37 -79%
1×5×5 key (top pick) $20.00 24.2% $11.37 -70%

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: 71% · Top 4 cover 2.12 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
1ASCHESTNUT1.6-10.8-174.927%69%-29%
5BAMERICANEXPRESSION2.5-12.3-171.518%53%-20%
3BSHE INSPIRES4.5-14.9-170.615%46%·-1%
2BGOTTA BE MADISON4.0-14.8-170.514%45%-6%
4CA MOMENT A LOVE12-115-167.913%42%+23%
7RISHONA8.0-114-169.29%31%·+3%
6EPERFECT TWIRL20-131-154.74%14%·+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 6 · Sun, May 3 · Gulfstream Park. 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.