Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Goçguly Hangulyýewiç Goçgulyýew (born 26 May 1977) is a Turkmenistani footballer currently playing for FC Gara Altyn and the Turkmenistan national team. Within 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 the full back positions are essential in most modern formations. The sweeper and wing back roles are more specialized for certain formations.