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David Deron Haye (born 13 October 1980) is a British professional boxer who has held world titles in two weight classes. He is the first British boxer to reach the final of the World Amateur Boxing Championships, where he won a silver medal in 2001. As a professional he became the first British boxer to become a unified cruiserweight world champion in 2008, winning three out of the four major world titles, as well as The Ring magazine and lineal titles. He then moved up to heavyweight and became the WBA champion in 2009 after defeating Nikolai Valuev, who had a world record 11 inches and 7 stone advantage on Haye. Along with Evander Holyfield, Haye is one of only two boxers to have unified the cruiserweight world titles and become a world heavyweight champion.
