The WBO started after a group of
Puerto Rican and
Dominican businessmen broke out of the
WBA's 1988 annual convention in
Isla Margarita, Venezuela over disputes regarding what rules should be applied. The WBO's first president was Ramon Pina Acevedo of the Dominican Republic. Soon after its beginning, the WBO was staging world championship bouts around the globe. Its first championship fight was for its vacant
super middleweight title, between
Thomas Hearns and
James Kinchen; Hearns won by decision. In order to gain respectability, the WBO next elected former world light heavyweight champion
José Torres of
Ponce, Puerto Rico, as its president. Torres left in 1996, giving way to Puerto Rican lawyer Francisco Valcarcel as president. Valcarcel held the position until October 2024, he then stepped down and this gave way to the election of Puerto Rican attorney Gustavo Olivieri. While the
IBF had awarded recognition to
Larry Holmes soon after its inception in 1983 (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 champions
Michael Moorer,
Riddick Bowe, and
Henry Akinwande relinquishing the title to pursue other options. Boxing publication
The Ring also did not recognize the WBO, despite having recognized the IBF after its inception in 1983, five years prior to the WBO. In the lighter weight divisions, however, long-reigning champions during the 1990s such as
Chris Eubank,
Dariusz Michalczewski,
Johnny Tapia, and
Naseem Hamed gave the WBO title increasingly more prestige. The WBO was also made popular by boxers such as
Marco Antonio Barrera,
Oscar De La Hoya,
Nigel Benn,
Ronald "Winky" Wright,
Joe Calzaghe, and
Wladimir Klitschko, all of whom held its title. On August 23, 1997, WBC
minimumweight champion
Ricardo López won the WBO minimumweight title by knocking out Puerto Rican fighter
Alex Sánchez. After the bout, López told a Mexican newspaper that he wanted to give his newly won championship belt to his father, who is a boxing fan. WBO president Francisco Valcarcel said he viewed that comment as a public resignation and declared the title vacant without holding a hearing or notifying López. The WBO sanctioned a bout between
Eric Jamili (10–5–1) and
Mickey Cantwell (13–4–1) to fill the vacancy despite protests by López. In Europe, the WBO was more accepted during its early years than in the U.S., and WBO champions always fared well in unification bouts with WBA, WBC, and IBF champions. For example, WBO light heavyweight champion
Dariusz Michalczewski unified his title with the WBA and IBF titles by defeating
Virgil Hill on June 13, 1997. WBO featherweight champion Naseem Hamed also defeated the reigning WBA, WBC and IBF champions in the same weight class. By 2000, the WBA was giving the same recognition to WBO champions as it did to WBC and IBF champions. In 2004 the WBC began naming WBO champions on its ranking listings. The IBF did not recognize the WBO in May 2006, but was doing so by February 2007. WBO regulations explicitly recognize the other three sanctioning bodies. For many years, as with the IBF, boxers based in Japan were not permitted to fight for WBO titles. In 2012, the
Japan Boxing Commission (JBC) recognized the governing body. ==Super titles==