World heavyweight champion Tyson Fury says he has retired from boxing in an expletive-laden message on Twitter. The Briton, 28, withdrew from a rematch with Ukrainian Wladimir Klitschko, scheduled for 29 October, because of reported mental health issues.
Fury, who holds the WBA and WBO titles, faces a hearing into a charge for an alleged doping violation in November.
"Boxing is the saddest thing I ever took part in. I’m the greatest, and also retired." He said.