espn-bet: margins and market data
Across 1,396 markets observed in the last 7 days (6 sports, 20 leagues), espn-bet's median bookmaker margin was 7.26% — rank #50 of 99 tracked books (lower is better for bettors). Where at least five books priced the same market, espn-bet had the single best price 4.1% of the time.
| Market family | Median margin |
|---|---|
| Moneyline / match result | 6.95% |
| Handicaps / spreads | 7.74% |
The margin is the bookmaker's built-in fee: the amount by which its implied probabilities exceed 100%. A 7.26% margin means that, on a typical espn-bet market, prices pay out 7.26% less than a fair-value book would. Omenizer's fair prices remove this margin using sharp reference sources — the methodology explains how.
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