Question: Neven Pajkić, is a Canadian heavyweight boxer, his undefeated run came to an end when he lost to which British professional boxer, on which date, after the referee stopped the fight in the third round?
Sentence (from "Tyson Fury"): He has held the "Ring" magazine heavyweight title since 2015, after defeating long-reigning world champion Wladimir Klitschko.
Relevant evidence: No