Former heavyweight world champion Wladimir Klitschko says he has retired from boxing with immediate effect.
It means there will not be a rematch with British fighter Anthony Joshua, who defeated the Ukrainian at Wembley Stadium in April.
The bout was stopped in the 11th round after Joshua knocked out his 41-year-old opponent, adding the WBA and IBO titles to his IBF crown.
Klitschko hangs up his gloves as one of the all-time boxing greats after a nine-and-a-half year reign as champion.
