betting concept
Expected Value
Also known as: EV, Expected Value (EV)
Expected value is the average profit or loss a bet would return if placed an infinite number of times at the same odds and probability. Positive EV means the bet is mathematically profitable long term; negative EV means it loses money.
Expected value is the long-run average return of a bet. It compares the payout odds offered by a sportsbook against the true probability of the event, expressed in dollars per unit staked. Any bet with EV greater than zero is, on paper, a winning bet across enough repetitions.
The formula has two pieces. Multiply the probability of winning by the profit if you win, then subtract the probability of losing multiplied by the stake. If the result is positive, the price is in your favor.
Worked example. A player is listed at +130 to score over 2.5 receiving touchdowns. Your research says the true probability is 50%. Profit on a win is $130 per $100 staked, loss on a loss is $100. EV = (0.50 × $130) - (0.50 × $100) = $15. That is +EV of $15 per $100 wagered.
EV is the single number Elite Picks optimizes. Our EP score on every prop is derived from EV: model-projected probability is compared against the sportsbook’s implied probability, the difference is converted into dollar EV, and props with the strongest positive EV surface to the top of the daily board. A bet that wins is not necessarily a good bet, and a bet that loses is not necessarily a bad bet. EV separates the decision from the outcome.
One bet rarely matters. EV is a sample-size statistic. You only realize the edge over hundreds of placements, which is why bankroll management and flat staking sit next to EV in any disciplined research workflow.
Example
A $100 bet at +110 with a true 55% win probability has EV = (0.55 × $110) - (0.45 × $100) = $15.50. Place that bet 1,000 times and you expect to net $15,500.