Dariusz „TIGER“ Michalczewski (born May 5, 1968) is a former Polish-German professional boxer.
He was WBO, WBA and IBF light-heavyweight World Champion and WBO cruiserweight champion.
Michalczewski turned professional in September 1991. He won the title of German International light-heavyweight champion on 13 February 1993, a title for foreign-born fighters based in Germany. He also won the IBF Intercontinental