Glossary
Expected value (+EV)
Expected value is the average profit or loss a bet would return if repeated many times; a positive-EV (+EV) bet wins over the long run.
Expected value multiplies each outcome's profit by its true probability and sums them. A bet is +EV when that sum is positive — the price beats the fair odds. It is the mathematical core of value betting.
Computing it needs a fair-probability estimate, which products usually derive from a sharp reference such as the exchange. A normalised feed supplies both the soft prices and that reference in one place.
OddsRelay delivers this as part of one already-matched feed. See live coverage on the coverage dashboard.