David Deron Haye (born 13 October 1980) is a British professional boxer, and current WBA World Heavyweight Champion.
Haye is a former undisputed cruiserweight champion, holding the WBA, WBC, WBO and The Ring magazine cruiserweight titles. Haye decided to vacate these titles in order to pursue his ambitions in the heavyweight division. His training camp is based in Kyrenia, in the unrecognised state of "Northern Cyprus" and he has worn the "Northen Cyprus flag" on his shorts alongside the Flag of St. George and the Union Flag in the past. He suffered his only professional loss against Carl Thompson. He has won cruiserweight and heavyweight World championships.
Source : Wikipedia.com