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
Boxing at the 2011 Pan American Games – Super heavyweight Boxing at the 2011 Pan American Games – Super heavyweight The men's super heavyweight competition of the boxing events at the 2011 Pan American Games in Guadalajara, Mexico, was held between October 24 and 29 at the Expo Guadalajara Arena. The defending champion was Robert Alfonso from Cuba. Super heavyweights were limited to those boxers weighing higher than or equal to 91 kilograms. This weight category is the heaviest out of the ten boxing events. Like all Pan American boxing events, the competition was a straight single-elimination tournament. Both semifinal losers were awarded bronze medals, so no boxers competed again