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THE RACING LEDGER
PLATE IFRAME 03/15
After Eadweard Muybridge's photographs of a horse at the gallop (public domain). They proved a galloping horse lifts all four hooves at once: measured, not assumed.

GB & IRISH RACING · BETFAIR EXCHANGE · 2015–2026

Horse racing,
measured.

Models built on ten years of exchange data, judged only on results they've never seen. Every result goes in the public ledger.

STATUS: RESEARCH. NOTHING IS FOR SALE.

RESEARCH LEDGER

--:--:-- UK
Seasons of exchange data11Apr 2015 to Jan 2026
Betfair market files275,089GB & IE win and place
Strategy configurations tested854first study, 16 Oct
Passed the out-of-sample gate0nothing launches until one does
Live selections published0forward test not started

01 · IN RESEARCH

Winner model

Form, jockey and trainer records, going, distance, draw, weather and the market, in one selection model.

02 · IN RESEARCH

Repricing signals

Betfair market mispricing: runners whose morning price looks out of line and tends to move before the off.

THE GATE

  1. Walk-forwardEach year tested only on the years before it.
  2. HoldoutThe latest twelve months, locked away, run once.
  3. Live, in publicTimestamped before each race. Every result logged.

Costs included. Backtests labelled simulated. Methodology