Ukrainian boxer and WBA/WBO/IBF/IBO world heavyweight champion Wladimir Klitschko will hold his next fight in Hamburg on September 6 against IBF mandatory challenger Kubrat Pulev of Bulgaria, reads a statement posted on the official Facebook page of the Klitschko brothers.

Pulev has won 20 fights (11 by a knockout) in his professional career and has suffered no defeats.

In late April, Wladimir Klitschko defended his titles in a bout against Australian Alex Leapai.