John-Z's Overlay · Trifecta ATM

Sat, May 16

Race 3

Md Sp Wt

Post: 11:41 · 1m · Turf · $52K purse · 11 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

11 runners

Contested pace

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

4 E — pure early 1 P — presser 2 S — closer 4 Unclassified

Projected speed

4 of 11 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.

A key, B in 2nd, A+B+C in 3rd on posts 6, 4, 1, 3, 2

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

Cost

$9.00

9 combos

Hit prob

9.9%

simulated

Typical payout if hit

$72.74

mean $94.54

Expected ROI

+4.4%

net $0.40

  • · Most-likely-to-cash structure: A key, B in 2nd, A+B+C in 3rd on posts [6, 4, 1, 3, 2] — hits 9.9% of simulated runs
  • · At $9 stake, a typical cash pays ≈ $73 (mean $95; trifecta payoffs are heavy-tailed). Estimated from the public pool, validated against archive payoffs.
  • · Multiple legitimate contenders — model is less concentrated.

A Top picks

6

B Contenders

4, 1, 3

C Value-edge longshots

2

Other ticket structures (5)
Ticket Cost Hit prob Typical payout ROI
3-horse box $6.00 8.5% $72.74 +6%
1×5×5 key (top pick) $20.00 14.8% $84.50 -2%
1×3×3 key (top pick) $6.00 8.4% $72.74 -8%
2×4×4 part wheel $12.00 16.0% $72.74 -7%
1×4×4 key (top pick) $12.00 11.6% $84.50 -18%

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: 70% · Top 4 cover 2.11 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
6ASMUNNY PROBLEM4.5-13.9-176.822%59%+13%
4BEMASTER SOMMELIER4.0-14.6-180.419%54%·+3%
1BELIMO2.5-12.3-177.917%51%-22%
3BSNAABAAHII3.5-12.6-177.216%48%-9%
5SCANNER5.0-15.8-173.17%24%-19%
2CEMARGIE'S LAST30-139-172.26%21%+13%
8EZENCAT30-152-168.44%13%·+5%
9OCEAN SOUND30-153-170.94%12%·+4%
7PPENDAR30-151-167.53%9%·+1%
11CHATBOT30-152-161.11%5%·-3%
10DRIVE BY JOHNNY12-113-150.61%4%-16%

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 3 · Sat, May 16 · Laurel 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.