Wladimir Klitschko, Former heavyweight world champion has retired from boxing – ruling out a rematch with Britain’s Anthony Joshua.
The Ukrainian, 41, was knocked out in the 11th round by current champion Joshua at Wembley Stadium in April.
Joshua, 27, had hoped Klitschko would sign his rematch clause for a proposed fight in Las Vegas on 11 November.
According to Klitschko, “I have achieved everything I dreamed of, and now I want to start my second career after sports.
The two-time former champion, who held the unified title from 2006-2015 before losing to Joshua’s fellow Briton Tyson Fury, ends his career with a record of 64 wins and five defeats.
“I would have never imagined that I would have such a long and incredibly successful boxing career,” he added.
Joshua must now face mandatory challenger Kubrat Pulev before 2 December or risk being stripped of his IBF belt.
Klitschko won Olympic super-heavyweight gold at the 1996 Games in Atlanta, before turning professional later that year.
He built an unbeaten 24-0 record before losing to American Ross Puritty in 1998 in his only fight to take place in his native Ukraine.