John-Z's Overlay · Trifecta ATM

Fri, May 1

Race 5

Md Sp Wt

Post: 2:35 · 1m · Turf · $120K purse · 12 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

12 runners

Contested pace

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

3 E — pure early 1 EP — early/presser 2 P — presser 5 S — closer 1 Unclassified

Projected speed

1 of 12 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 5, 10, 6, 1

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

Cost

$6.00

6 combos

Hit prob

1.0%

simulated

Typical payout if hit

$179.21

mean $204.42

Expected ROI

-65.1%

net $-3.91

  • · Most-likely-to-cash structure: 1×3×3 key (top pick) on posts [5, 10, 6, 1] — hits 1.0% of simulated runs
  • · At $6 stake, a typical cash pays ≈ $179 (mean $204; 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

5, 10

B Contenders

6, 1, 11

C Value-edge longshots

3

Other ticket structures (5)
Ticket Cost Hit prob Typical payout ROI
3-horse box $6.00 1.0% $128.75 -77%
1×4×4 key (top pick) $12.00 2.0% $179.21 -65%
2×4×4 part wheel $12.00 2.1% $146.26 -75%
1×5×5 key (top pick) $20.00 3.1% $179.21 -49%
A key, B in 2nd, A+B+C in 3rd $24.00 3.7% $90.77 -74%

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: 42% · Top 4 cover 1.25 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
5ASFLICK10-19.3-180.712%34%+11%
10ASPREPPED3.0-12.8-179.911%33%-31%
6BPEXECUTIVE4.0-15.3-178.410%30%-21%
1BSBRIDGESONG8.0-16.8-178.010%29%·+1%
11BSROYAL GUARD5.0-15.3-175.79%27%-16%
3CGRANDE SORPRESO30-135-177.19%26%+17%
4EPOWELL RIVER8.0-17.8-174.28%24%·-4%
9ECASH BONUS15-125-173.47%22%+6%
2SCLARK'S CORNER12-116-174.26%20%·+0%
7EPCULTURE WAR20-135-173.36%19%+7%
13ETIMAYYYY8.0-113-172.86%18%-10%
8PWAR AND MAJESTY8.0-110-172.66%18%-10%
12SCRHILL COUNTRY50-1
14SCRSDROP SHOT20-1
15SCREAPOLLO'S GLORY30-1
16SCRPWEMBLEY AVENUE15-1

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 5 · Fri, May 1 · 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.