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Last Updated: Friday February 05 2010 16:17 GMT

Find out about American Football

It's the American Football Superbowl this weekend in Miami between the New Orleans Saints and the Indianapolis Colts.

So to help you understand more about the game, Spartan from Gladiators caught up with players from the London Blitz team to give Sportsround viewers a handy guide.

They told us why there are about 50 players for each team.

And they explained why their different roles can be the difference between winning and losing.