How scoring works
One number per bookmaker per event, built from five measurable components. Every score is snapshotted at computation time so our historical claims can be audited.
1 · The fair market
For each event we take the latest prices from every bookmaker, remove each book's margin (proportional de-vig), and average the implied probabilities — with exchange prices, adjusted for commission, weighted double because they carry no bookmaker margin. The result is the fair price: our best estimate of what each selection is actually worth.
2 · Five components
Price edge (heaviest weight). How each book's prices compare to fair, averaged across the market's selections. Promo value. Active promotions converted to expected value: the modelled chance the promo triggers, times the redemption value of the bonus returned (~70% of face value). Market margin. The book's total overround — a fairness measure across the whole market, not just one side. Depth. How many markets the book prices on the event. Reliability. Payout speed, limiting behaviour and posting habits, updated monthly.
3 · The composite
Each component is percentile-ranked against the other books on the same event (0–100), weighted by your chosen profile, and summed. Books with stale prices lose up to 10 points — a great price from twenty minutes ago may no longer exist.
Profiles
| Profile | Price edge | Promos | Margin | Depth | Reliability |
|---|---|---|---|---|---|
| Balanced | 45% | 20% | 15% | 10% | 10% |
| Value hunter | 60% | 5% | 20% | 5% | 10% |
| Recreational | 30% | 40% | 10% | 10% | 10% |
Independence
SportsBookie is funded by member subscriptions only. We hold no affiliate relationships and take no payment, placement fees or commissions from any wagering operator. If a bookmaker ranks first, it's because the numbers say so.