Defender (association Football)
In the sport of association football, a defender is an outfield player whose primary role is to prevent the opposition from attacking.
There are four types of defender: centre-back, sweeper, full-back and wing-back. The centre-back and full-back positions are essential in most modern formations. The sweeper and wing-back roles are more specialised for certain formations.
Read more about Defender (association Football): Centre-back, Sweeper (Libero), Full-back, Wing-back