Jack Dempsey Jack Dempsey William Harrison "Jack" Dempsey (June 24, 1895 – May 31, 1983), nicknamed "Kid Blackie" and "The Manassa Mauler", was an American professional boxer who competed from 1914 to 1927, and reigned as the world heavyweight champion from 1919 to 1926. A cultural icon of the 1920s, Dempsey's aggressive fighting style and exceptional punching power made him one of the most popular boxers in history. Many of his fights set financial and attendance records, including the first million-dollar gate. Dempsey is ranked tenth on "The Ring" magazine's list of all-time heavyweights and seventh among its Top 100 Greatest Punchers,
Light heavyweight Light heavyweight Light heavyweight, or junior cruiserweight, is a weight class in combat sports. In amateur boxing, light heavyweight is a weight division above and up to , falling between middleweight and heavyweight. In professional boxing, the division is above and up to , falling between super middleweight and cruiserweight. The light-heavyweight class has produced some of boxing's greatest champions: Bernard Hopkins (who, upon becoming champion, broke the record for oldest man to win a world title), Tommy Loughran, Billy Conn, Joey Maxim, Archie Moore, Michael Moorer, Bob Foster, Ann Wolfe, Michael Spinks, Dariusz Michalczewski, Roy Jones, Jr., Joe Calzaghe