John-Z's Overlay · Trifecta ATM

Mon, May 25

Race 2

Md Sp Wt

Post: 1:14 · 5.5f · Dirt · $120K purse · 8 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

8 runners

Unprojectable

7 of 8 runners have no BRIS run-style code (likely first-time starters) — pace shape can't be called.

1 P — presser 7 Unclassified

7 of 8 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 5, 7, 3

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

Cost

$6.00

6 combos

Hit prob

9.5%

simulated

Typical payout if hit

$12.97

mean $14.73

Expected ROI

-76.8%

net $-4.61

  • · Most-likely-to-cash structure: 3-horse box on posts [5, 7, 3] — hits 9.5% of simulated runs
  • · At $6 stake, a typical cash pays ≈ $13 (mean $15; trifecta payoffs are heavy-tailed). Estimated from the public pool, validated against archive payoffs.
  • · Multiple legitimate contenders — model is less concentrated.

A Top picks

5

B Contenders

7, 3, 1

C Value-edge longshots

6

Other ticket structures (5)
Ticket Cost Hit prob Typical payout ROI
1×3×3 key (top pick) $6.00 10.3% $10.12 -82%
A key, B in 2nd, A+B+C in 3rd $9.00 14.2% $10.12 -76%
1×4×4 key (top pick) $12.00 17.6% $10.12 -71%
2×4×4 part wheel $12.00 17.2% $12.11 -81%
1×5×5 key (top pick) $20.00 24.4% $12.11 -67%

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
5APBOURBON TOWN1.6-11.3-173.730%72%-26%
7BHEY TUFF GUY3.0-13.2-168.318%54%-10%
3BGUN FOR GLORY4.0-15.6-169.113%43%-8%
1BTIME FOR ACTION3.5-14.2-168.513%43%-14%
6CBISTINEAU BLIZZARD20-148-167.811%36%+24%
8GAMERBOY10-121-167.08%29%+6%
4CROSS POWER30-181-152.23%12%·+3%
2FORTUNE KING30-166-146.83%11%·+3%

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 2 · 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.