John-Z's Overlay · Trifecta ATM

Sun, May 3

Race 5

Md 50000

Post: 3:13 · 6f · Turf · $48K 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

Unprojectable

8 of 12 runners have no BRIS run-style code (likely first-time starters) — pace shape can't be called.

1 E — pure early 2 P — presser 1 S — closer 8 Unclassified

Projected speed

8 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.

3-horse box on posts 6, 5, 9

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

Cost

$6.00

6 combos

Hit prob

9.7%

simulated

Typical payout if hit

$27.70

mean $30.41

Expected ROI

-50.8%

net $-3.05

  • · Most-likely-to-cash structure: 3-horse box on posts [6, 5, 9] — hits 9.7% of simulated runs
  • · At $6 stake, a typical cash pays ≈ $28 (mean $30; 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

6

B Contenders

5, 9, 2

C Value-edge longshots

7

Other ticket structures (5)
Ticket Cost Hit prob Typical payout ROI
1×3×3 key (top pick) $6.00 6.6% $34.30 -61%
A key, B in 2nd, A+B+C in 3rd $9.00 8.2% $34.30 -55%
1×4×4 key (top pick) $12.00 9.6% $34.30 -50%
2×4×4 part wheel $12.00 12.0% $34.30 -57%
1×5×5 key (top pick) $20.00 12.9% $41.35 -46%

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: 64% · Top 4 cover 1.92 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
6APLUPINE2.5-11.6-175.925%63%-10%
5BPFIVE DOZEN ROSES4.5-13.8-172.018%52%+5%
9BEMY LIL ARMY GIRL6.0-16.8-173.317%50%+13%
2BRED SPIRITS10-111-171.58%27%·+4%
7CSTELLA FORTUNA20-151-170.37%22%+10%
11DREAMY GIRL15-125-170.16%22%+6%
13SHIP HOP DANCER12-118-163.65%18%·-1%
1FIND YOUR PATH5.0-16.6-165.05%18%-24%
12HANNA'S HIDEAWAY15-127-164.63%11%-5%
3MIDNIGHT BLUE50-173-157.42%7%·+2%
10BUSTLING TOWN10-116-154.62%5%-18%
4GRESHAM'S LAW20-138-150.21%5%-7%
8SCREBOILING POINT10-1
14SCRSI REST MY CASE2.0-1
15SCREPMY GIRL AUBREE4.0-1

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 · Sun, May 3 · Belmont at The Big A. 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.