Legendary Ukrainian boxer Wladimir Klitschko, who has recently announced his retirement from boxing, is among the best 20 boxers in the world, regardless of weight category, according to BoxRec.
Ukrinform: Wladimir Klitschko among 20 best boxers in history
Ukrainian heavyweight boxing world champion Wladimir Klitschko cheers with a Ukrainian flag after knocking down Bulgarian challenger Kubrat Pulev in the IBF, IBO, WBO and WBA title bout at the O2 arena on Nov. 15, 2014 in the northern German city of Hamburg.
