EV (Expected Value) in Sports Betting
EV stands for
Expected Value - a mathematical concept that calculates the theoretical profit or loss you can expect from a bet over the long term.
How EV Works
Positive EV (+EV): The bet is mathematically profitable over time
Negative EV (-EV): The bet will lose money long-term
Zero EV: Break-even proposition
Calculating EV
Formula: EV = (Probability of Win × Amount Won) - (Probability of Loss × Amount Lost)
Example:
- Bet £10 on odds of 3.0 (2/1)
- You believe true probability is 40%
- EV = (0.40 × £20) - (0.60 × £10) = £8 - £6 = +£2
This suggests a profitable bet over multiple iterations.
Finding +EV Bets
1.
Line Shopping: Compare odds across multiple bookmakers like
Bet365,
William Hill,
Paddy Power, and
Betfair
2.
Arbitrage: Exploit price differences between bookmakers
3.
Value Betting: Identify when bookmaker odds underestimate true probabilities
4.
Matched Betting: Use free bets and promotions (legal but often restricted by operators)
Tools for EV Betting
- Oddschecker for comparing UK bookmaker prices
- Betfair Exchange for market-driven odds
- Betting calculators and EV software
Remember: EV is theoretical - variance means short-term results will differ. Only bet with licensed UK operators and gamble responsibly.