The World Boxing Organization, or WBO is one of many organizations which sanction professional championship boxing bouts, alongside the WBA, WBC, IBF and a dozen or so others.
The WBO was founded by Francisco Valcarcel and other members of the WBC, who broke away from the organization following a dispute. The WBO is headquartered in Puerto Rico.
Despite serious efforts by the organization to be recognized by the public as the "fourth" world sanctioning body for pro boxing over its 15 year history, the WBO has become little more than the "best of the also-ran" organizations, and its championships carry little real prestige. Those recognized as champions by the WBO often relinquish their WBO title just for the opportunity to fight for a WBA, WBC or IBF belt, while others (including three straight Heavyweight title holders during the 1990's) simply relinquished the WBO title.
Dingaan Thobela won three titles: the WorldBoxingOrganisation and WBA lightweight titles, in September 1990 and June 1993 respectively, as well as the WorldBoxing Council middleweight title in September 2000.
Southpaw Corrie Sanders shocked the boxingworld when he knocked out the highly regarded Wladimir Klitschko early in the second round to win the WBO version of the title.
Among these was Brian Mitchell, who won the WorldBoxing Association title in September 1986 and the International Boxing Federation title in 1991 in the junior lightweight division.
Dingaan Thobela won three titles: the WorldBoxingOrganisation and WBA lightweight titles, in September 1990 and June 1993 respectively, as well as the WorldBoxing Council middleweight title in September 2000.