List of world heavyweight boxing champions - Wikipedia
https://en.wikipedia.org/wiki/List_of_world_heavyweight_boxing_champions
At boxing's beginning, the heavyweight division had no weight limit, and historically the weight class has gone with vague or no definition.During the 19th century many heavyweights were 170 pounds (12 st 2 lb, 77 kg) or less, though others weighed considerably more. John L. Sullivan was the first widely recognized champion under Marquess of Queensberry rules.
DA: 58 PA: 77 MOZ Rank: 16 Up or Down: Up