Enter both sides of a two-way market. We divide each implied probability by their sum to calculate a proportional no-vig reference and show the implied overround.
Multiplicative devig divides each raw implied probability by their sum. At -110 / -110, the sum is 104.76% and the normalized reference is 50% / 50%. This overround is not a measured bookmaker profit margin.
The two implied probabilities can sum above, below, or exactly to 100%. This tool reports that difference and normalizes both sides. The result depends on a proportional margin assumption; it does not independently establish an outcome probability or positive expected value.
ZenHodl publishes a CLV retraction and placebo tests showing why a near-resolution closing reference can encode the eventual outcome. Our Edge Finder compares model probabilities with available venue prices; that gap alone does not establish a profitable strategy.
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