John-Z's Overlay · Trifecta ATM

Sat, May 16

Race 5

Md 20000

Post: 3:15 · 1m · Dirt · $35K 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

Contested pace

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

1 E — pure early 1 EP — early/presser 1 P — presser 1 S — closer 4 Unclassified

Projected speed

4 of 8 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 3, 8, 2, 1

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

Cost

$6.00

6 combos

Hit prob

4.7%

simulated

Typical payout if hit

$13.96

mean $21.23

Expected ROI

-83.3%

net $-5.00

  • · Most-likely-to-cash structure: 1×3×3 key (top pick) on posts [3, 8, 2, 1] — hits 4.7% of simulated runs
  • · At $6 stake, a typical cash pays ≈ $14 (mean $21; 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

3, 8

B Contenders

2, 1, 5

C Value-edge longshots

7, 6

Other ticket structures (5)
Ticket Cost Hit prob Typical payout ROI
3-horse box $6.00 5.3% $10.11 -90%
1×4×4 key (top pick) $12.00 7.7% $20.76 -78%
2×4×4 part wheel $12.00 9.2% $13.96 -86%
1×5×5 key (top pick) $20.00 11.0% $20.76 -71%
2×5×5 part wheel $24.00 15.2% $17.97 -82%

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: 62% · Top 4 cover 1.86 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
3ASPRIVATE FLIGHT2.5-12.5-172.817%50%-23%
8ASWISS ARMY KNIFE1.8-11.4-172.517%49%-42%
2BEPSOUNDS LIKE FUN3.5-13.7-173.116%47%-10%
1BPISOLA D'ORO8.0-18.6-170.513%40%+12%
5BEBIG BROOKLYN12-117-170.610%33%+13%
7CBABY MEANIE20-137-168.910%31%+18%
4STAYFROSTYMYFRIEND8.0-19.6-165.58%26%·-2%
6CMAGNUM'S MACROBRST15-125-166.77%24%+8%

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 · Sat, May 16 · 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.