My English blog

You can win (in) a game, a race, a battle, an argument etc, and you can win a prize, money etc

You can beat a person that you are playing/arguing/fighting etc against

e.g. : My friend usually wins when we play poker

e.g. : My friend beat me at poker the first time we played

Both verbs are irregular

beat - beat - beaten                                     win - won - won