Expected Value (EV)
Expected value is the average profit or loss per bet if you repeated the same wager infinitely. A positive EV bet is profitable in the long run, even if individual results vary. Calculate EV by multiplying the probability of winning by the potential profit, then subtracting the probability of losing multiplied by the stake. Only bet when EV is positive.
Kelly Criterion
The Kelly Criterion is a formula for optimal stake sizing based on your edge and the odds. It maximises long-term growth while minimising risk of ruin. Full Kelly can be volatile; many bettors use half-Kelly or quarter-Kelly for a more conservative approach. It requires accurate probability estimates to work effectively.
Arbitrage & Trading
Arbitrage involves backing all outcomes across different bookmakers to guarantee profit regardless of the result. It requires multiple accounts, quick execution, and awareness of stake limits. Exchange trading — laying as well as backing — allows you to lock in profits or hedge positions as events unfold.
Data Analysis
Modern bettors use statistics, form guides, and predictive models to identify value. Key metrics vary by sport: xG in football, pace in basketball, form in horse racing. Combine quantitative analysis with qualitative factors like team news and motivation. Our bookmaker comparison helps you find operators with the best odds and markets for your strategy.
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