Quarterback

The quarterback is a bit like the fly half in rugby. He is the playmaker, and is the key to the offense's success. It is his job to call the play, and, crucially, make the decision whether to pass the football to the Wide Receiver or to hand it off to the Running Back. He has a team of five blockers (the two offensive guards, offensive tackles and centre) to stop the defence from tackling him before he can make a play.