Expected value, usually shortened to EV, is the average result you would expect from a bet if you could place it over and over again. It is the concept that underpins almost every serious approach to betting, because it shifts the question from “will this win?” to “is the price worth it?”.
The idea is straightforward. Every bet has an amount you can win and a chance of winning it, balanced against an amount you can lose and the chance of that. If the potential winnings, weighted by how likely they are, outweigh the potential losses weighted the same way, the bet has positive expected value. Over the long run, positive-EV bets are the ones that grow a bankroll.
A simple way to think about it: estimate the real probability of an outcome yourself, then compare it with the implied probability buried in the odds. If you genuinely believe a selection has a 50% chance but the price implies only 40%, the gap is your edge, and the bet carries positive value.
The hard part is honest estimation. Bookmakers price markets sharply, so finding true edges takes research and discipline. But even a rough EV mindset helps you avoid short prices that look tempting yet quietly work against you.
18+ · Gamble responsibly · /responsible-gambling/