Overround
The total implied probability exceeding 100% — the bookmaker's margin.
Full Explanation
Overround is the total implied probability of all outcomes in a market added together. In a fair market this would equal exactly 100%. In reality, bookmakers set odds so the total exceeds 100% — the excess is their profit margin. South African sportsbooks typically have overrounds of 105-112% on major sports.
💡 Example
Market: Home 2.10 (47.6%), Draw 3.30 (30.3%), Away 3.50 (28.6%) = 106.5% overround.
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