World Boxing Organization (as they did with several established champions in the lower weight divisions), the WBO sanctioned a fight between two relatively unknown fighters, Francesco Damiani (winner of the super heavyweight silver medal at the 1984 Summer Olympics) and Johnny DuPlooy, to determine the inaugural holder of its own heavyweight title in 1989. All other sanctioning bodies of boxing recognized the then-undefeated Mike Tyson as the undisputed heavyweight champion. Damiani, meanwhile, went on to become the first WBO heavyweight champion. At heavyweight, especially in the United States, the organization initially struggled to gain credibility as a major sanctioning body, with WBO heavyweight
World Heavyweight Wrestling Championship (original version) while Joe Stecher is the youngest champion, winning at the age of 22 years, 103 days. The final reign was disputed between Ed Lewis and Edouard Carpentier and the latter was in his first and therefore only reign. All matches were held at house shows. Various promotions have been home to world heavyweight championships with origins that can also be traced back to the World Heavyweight Wrestling Championship. The National Wrestling Alliance World Heavyweight Championship assumed the original world championship's position as the preeminent wrestling championship, and claimed its lineage. Most of the following championships, all based in North America,