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
HBO World Championship Boxing Ali and Joe Frazier; Larry Holmes vs. Gerry Cooney, for the World Boxing Council heavyweight championship; The Battle of the Champions, when Aaron Pryor beat Alexis Argüello in their first fight; Carnival of Champions, in which Wilfredo Gómez beat Lupe Pintor, and Thomas Hearns beat Wilfred Benítez; Marvin Hagler-Thomas Hearns fight, billed as The War; Thunder Meets Lightning, in which Julio César Chávez beat Meldrick Taylor with two seconds remaining in the twelfth round; Michael Moorer vs. George Foreman, in which Foreman KO'd Michael Moorer to become the oldest heavyweight champion of the world at age 45; James Douglas's stunning