And a wonderful sight in the game is seeing the wing-back fly up and down the touchline terrorising the opposition.

Their role is more attacking than the full-back, and it basically involves a great deal of running.

They'll certainly have finely tuned engines!

But they are a nightmare to defend against. You never know where they're going to be!

Could you stop this man?

They are usually employed in a formation that includes just three players in midfield.

This allows the wing-backs to supply all of the width in the team.

Because their job is to attack, there will usually be an extra central defender to give more defensive cover.

To be a useful wing-back you've got to be good at all parts of the game!

Fit, strong, good with both feet, a great tackler, an amazing passer and a fine crosser of the ball.

Roberto Carlos is never happier when he's motoring forward for Brazil or Real Madrid!

Who's in a team?

Goalkeeper

Full-back

Wing-back

Central defender

Sweeper

Central midfield

Wide midfield

Behind the striker

Striker

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