Right-Backs and Left-Backs are the defenders stationed either side of the centre-backs to provide protection from attacking wide players. They often have to defend against the opponent’s wingers, who will try to take the ball past them down the flanks in order to cross or pass into the penalty area to their attackers. They also take thrown-ins and provide support for the wide midfield ahead of them, eventually overlapping and sendings crosses into the opposition box.

Right Wing-Backs and Left Wing-Backs are a modern variation of full-backs. Basically, they are defenders with a heavier emphasis on attack. They are expected to stay on their touchline, overlaps and sends crosses into the opposition box but still marks opposition wingers when needed. It is one of the most physically demanding positions in modern football.
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