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Martin B. Nielsen (born 18 November 1981) is a Danish Cruiserweight professional boxer who made his debut on 14 June 2002. He won the IBF Youth Heavyweight Champion title on 12 November 2004 and IBF Youth Super Middleweight Champion title on 13 March 2004.
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The World Boxing Organization (WBO) is an organization which sanctions professional boxing bouts. It is recognized by the International Boxing Hall of Fame (IBHOF) as one of the four major world championship groups, alongside the World Boxing Association (WBA), World Boxing Council (WBC), and International Boxing Federation (IBF). The WBO's headquarters are located in San Juan, Puerto Rico.
Evander Holyfield is an American former professional boxer who competed between 1984 and 2011. He reigned as the undisputed champion at cruiserweight in the late 1980s and at heavyweight in the early 1990s, and was the only boxer in history to win the undisputed championship in two weight classes in the "three belt era", a feat later surpassed by Terence Crawford, Naoya Inoue and Oleksandr Usyk, who became two-weight undisputed champions in the four-belt era. Nicknamed "the Real Deal", Holyfield is the only four-time world heavyweight champion, having held the unified WBA, WBC, and IBF titles from 1990 to 1992, the WBA and IBF titles again from 1993 to 1994, the WBA title a third time from 1996 to 1999; the IBF title a third time from 1997 to 1999 and the WBA title for a fourth time from 2000 to 2001.
Jorge Adolfo Páez is a Mexican actor, circus performer and former professional boxer. In boxing he held the WBO and IBF featherweight titles. Paez's nickname of "El Maromero" is in honor of the somersault acts he performs at the circus. It was in the circus that he learned acrobatic moves he would later use in the boxing ring. Páez is also the father of Azriel Páez, Jorge Páez Jr., and Airam Páez.
The International Boxing Federation (IBF) is one of four major organizations recognized by the International Boxing Hall of Fame (IBHOF) which sanctions professional boxing bouts, alongside the World Boxing Association (WBA), World Boxing Council (WBC) and World Boxing Organization (WBO).
Glengoffe Donovan Bartholomew Johnson is a Jamaican former professional boxer who competed from 1993 to 2015. He held the IBF, IBO and Ring magazine light heavyweight titles between 2004 and 2005, and challenged once each for world titles at middleweight and super middleweight.
Gong Zhichao is a former badminton player from the People's Republic of China.
In boxing, the undisputed champion of a weight class is the boxer who simultaneously holds world titles from all major organizations recognized by each other and the International Boxing Hall of Fame. There are currently four major sanctioning bodies: WBA, WBC, WBO, and IBF. There were many undisputed champions before the number of major sanctioning bodies recognizing each other increased to four in 2007, but there have been only 19 boxers to hold all four titles simultaneously.
Avetik Abrahamyan, best known as Arthur Abraham, is an Armenian-German former professional boxer who competed from 2003 to 2018. He held multiple world championships in two weight classes, including the IBF middleweight title from 2005 to 2009, and the WBO super-middleweight title twice between 2012 and 2016.
Uriah Grant is a Jamaican former professional boxer who held the IBF Cruiserweight Title.
Carl Martin Froch, is a British former professional boxer who competed from 2002 to 2014, and has since worked as a boxing analyst and commentator. He held multiple super-middleweight world championships, including the World Boxing Council (WBC) title twice between 2008 and 2011, the International Boxing Federation (IBF) title from 2012 to 2015, and the World Boxing Association (WBA) title between 2013 and 2015. At regional level, he held the British and Commonwealth super-middleweight titles between 2004 and 2008, and won the Lonsdale Belt in 2006. As an amateur, in the middleweight division, Froch won a bronze medal at the 2001 World Championships, and the ABA title twice.
Martin Lindsay is a former professional boxer from Northern Ireland who competed from 2004 to 2014. He held the IBF Youth featherweight title in 2007. At regional level, he held the British featherweight title from 2009 to 2010 and challenged twice for the Commonwealth featherweight title between 2013 and 2014.
Dejan Zavec, best known as Jan Zaveck, is a Slovenian former professional boxer who competed from 2003 to 2015. He held the IBF welterweight title from 2009 to 2011, and challenged once for the WBA super-welterweight title in 2015. Zaveck is the only Slovenian boxer to have held a world title, and was named Slovenian Sportsperson of the Year in 2010.
Anthony Victor James Yoka is a French professional boxer. As an amateur, he won a bronze medal at the 2015 European Games; and gold at the 2015 World Championships and 2016 Olympics.
Ryan Burnett is an Irish former professional boxer who competed from 2013 to 2019. He was a unified bantamweight world champion, having held the WBA (Unified) and IBF titles between 2017 and 2018. At regional level he held the British bantamweight title from 2015 to 2017. As an amateur, he represented Ireland at the 2010 Summer Youth Olympics and won a gold medal in the light-flyweight division.
Teófimo Andrés López Rivera is an American professional boxer. He has held multiple world championships in two weight classes, including the World Boxing Organization (WBO) and Ring magazine light welterweight titles since 2023; previously he held the unified World Boxing Association (WBA), International Boxing Federation (IBF), WBO, and Ring lightweight titles between 2019 and 2021. Lopez has also held the lineal championship at lightweight and light welterweight. As an amateur, he represented Honduras at the 2016 Summer Olympics.
Daniel Dubois is a British professional boxer. He has held the International Boxing Federation (IBF) heavyweight title since June 2024. Previously, he held the World Boxing Association (WBA) heavyweight title from 2022 to 2023 and the interim IBF heavyweight title in 2024. At regional level, he has held multiple heavyweight championships, including the British and Commonwealth titles from 2019 to 2020. As an amateur, he was a five-time national junior titlist and British champion. He currently holds a 95% knockout-to-win percentage.
