You should treat sports betting like you treat forex or stocks, start with an account of £200, bet a game with 10% of your account, that's going to be £20 for each game. When you win your first game, compound the money for the second game, eg: you won £1.2 on your first game, next game you play with £21.2, the next one you start all over with £20. This strategy will help you lock profits