John-Z's Overlay · Trifecta ATM

Fri, May 22

Race 7

Md Sp Wt

Post: 3:50 · 1m · Dirt · $120K 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.

1 E — pure early 3 EP — early/presser 4 P — presser 3 Unclassified

Projected speed

3 of 11 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 10, 5, 7, 9

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

Cost

$6.00

6 combos

Hit prob

1.2%

simulated

Typical payout if hit

$123.49

mean $137.62

Expected ROI

-72.1%

net $-4.32

  • · Most-likely-to-cash structure: 1×3×3 key (top pick) on posts [10, 5, 7, 9] — hits 1.2% of simulated runs
  • · At $6 stake, a typical cash pays ≈ $123 (mean $138; 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

10

B Contenders

5, 7, 9

C Value-edge longshots

4

Other ticket structures (5)
Ticket Cost Hit prob Typical payout ROI
3-horse box $6.00 1.2% $131.64 -73%
A key, B in 2nd, A+B+C in 3rd $9.00 1.8% $131.64 -67%
1×4×4 key (top pick) $12.00 2.4% $131.64 -63%
2×4×4 part wheel $12.00 2.3% $130.44 -72%
1×5×5 key (top pick) $20.00 3.8% $161.66 -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: 43% · Top 4 cover 1.28 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
10APIN SCOPE4.0-13.7-180.513%37%-14%
5BPAL GHADEER5.0-15.3-181.211%31%-11%
7BPFAST GUN8.0-18.4-178.110%31%·+2%
9BEPAEGIS6.0-17.7-177.610%29%-7%
4CSHE'S OUR GIRL15-115-178.29%28%+12%
11PBODACIOUS BAY8.0-17.3-174.69%27%·-1%
2EPMISS COMPLICATED12-115-180.99%27%+7%
8ISLAND FLOWER12-112-176.98%25%+6%
6EBABYSITTER15-122-175.58%24%+8%
3EPFLASH OF FREEDOM10-113-176.48%23%·+0%
1WEDELIA6.0-15.5-170.95%17%-20%
12SCRSSONHADOR30-1
13SCREMANCUSO15-1
14SCRSWONZEE WEATHER20-1
15SCRSCHARTED DESTINY12-1
16SCRDARING MOVE20-1

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 7 · Fri, May 22 · 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.