Professional boxing knocked him out in brutal fashion. This fight made Hagler famous; he was able to lure Ray Leonard out of retirement in 1987, but lost in a highly-controversial decision. Hagler retired from boxing immediately after that fight. In the latter half of the decade young heavyweight Mike Tyson emerged as a serious contender. Nicknamed "Iron Mike", Tyson won the heavyweight unification series to become world heavyweight champion at the age of 20 and the first undisputed champion in a decade. Tyson soon became the most widely known boxer since Ali due to an aura of unrestrained ferocity, such as that
World Heavyweight Wrestling Championship (original version) 1928 in Michigan City, Indiana for the Michigan/Illinois World Heavyweight Wrestling Championship version. Joe Stetcher then defeated Zbyszko to become widely recognized champion. The dispute ended when Lewis defeated Stetcher on February 21, 1928. Gus Sonnenburg won the title from Lewis on January 4, 1929, but the recognition of being the world champion by the wrestling section of the National Boxing Association was withdrawn from Sonnenberg for failing to meet real title contenders. Lewis won the title again on April 13, 1931. Lewis was also AWA World Heavyweight Champion in Boston at the time, but lost that title by disqualification