Klitschko has officially retired from boxing ahead of potential rematch with the British-Nigerian boxer.
Recall, Klitschko was set to battle the British-Nigerian boxer in a much anticipated rematch staged at the T-Mobile Arena in the city of Las Vegas on November 11, 2017.
The Ukrainian lost the IBF and WBA world heavyweight titles to Joshua at Wembley in April, 2017 as the rematch was set for November.
He released a video to confirm his retirement after his blistering 21 years in professional boxing.
Watch the clip below: