The World Boxing Association (WBA), formerly known as the National Boxing Association (NBA), is the oldest and one of four major organizations which sanction professional boxing bouts, alongside the World Boxing Council (WBC), International Boxing Federation (IBF) and World Boxing Organization (WBO). The WBA awards its world championship title at the professional level. Founded in the United States in 1921 by 13 state representatives as the NBA, in 1962 it changed its name in recognition of boxing's growing popularity worldwide and began to gain other nations as members.
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.
Dariusz Tomasz Michalczewski is a Polish former professional boxer who competed from 1991 to 2005. He held multiple world championships in two weight classes, including the WBA, IBF, WBO and lineal light heavyweight titles between 1994 and 2003, and the WBO junior-heavyweight title from 1994 to 1995. BoxRec currently ranks him No.63 in its ranking of the greatest pound for pound boxers of all time.
2007 in sports describes the year's events in world sport.
In professional boxing, the undisputed champion of a weight class is the boxer who holds world titles from all of the major sanctioning organisations simultaneously. There are currently four major sanctioning bodies: WBA, WBC, IBF and WBO. There were many undisputed champions before the number of sanctioning bodies increased to four in 2007, but there have only been 13 boxers to hold all four titles simultaneously. As of June 2022, Canelo Álvarez, Jermell Charlo and Devin Haney are undisputed champions in the super middleweight, light middleweight and lightweight divisions respectively.
Demetrius Cesar Andrade is an American professional boxer. He has held multiple world championships in two weight classes, including the WBO light middleweight title between 2013-2015, the WBA (Regular) title in 2017, and the WBO middleweight title from 2018 to 2022. As an amateur he won the U.S. national championships and Golden Gloves twice each, a gold medal at the 2007 World Championships, and represented the U.S. at the 2008 Olympics; all in the welterweight division.
Artur Asilbekovich Beterbiev is a Russian-Canadian professional boxer. He is a unified light heavyweight champion, having held the IBF title since 2017, the WBC title since 2019 and the WBO title since June 2022.
Vasyl Anatoliyovych Lomachenko is a Ukrainian professional boxer. He is a former world champion in three weight classes, having held the WBO featherweight title from 2014 to 2015; the WBO junior lightweight title from 2016 to 2017; and the unified WBA (Super), WBC, WBO and Ring magazine lightweight titles between 2018 and 2020.
Oleksandr Oleksandrovych Usyk is a Ukrainian professional boxer. He is a world champion in two weight classes, having held the unified WBA (Super), IBF, WBO and IBO heavyweight titles since 2021, The Ring magazine heavyweight title since 2022, and the undisputed cruiserweight title from 2018 to 2019, being the first cruiserweight champion to hold all four major world titles. He is widely regarded as one of the greatest Ukrainian boxers of all time. With his victory over Joshua, Usyk became one of only three boxers to have unified the cruiserweight world titles and become a world heavyweight champion, joining Evander Holyfield and David Haye.
Cecilia Carmen Linda Brækhus is a Norwegian professional boxer and former kickboxer. In boxing she reigned as the undisputed female welterweight champion from 2014 to 2020, and is the first woman in any weight class to hold the WBA, WBC, IBF and WBO titles simultaneously. She is also one of only 11 boxers in history, female or male, to hold all four major world titles simultaneously, along with Bernard Hopkins (2004–2005), Jermain Taylor (2005), Terence Crawford (2017), Oleksandr Usyk (2018–2019), Claressa Shields, Katie Taylor (2019–), Jessica McCaskill (2020–), Josh Taylor (2021–), and Canelo Alvarez (2021-), Devin Haney (2022-) in 2016, she captured the IBO title, becoming the first ever boxer to hold five world titles from sanctioning bodies simultaneously.
John Riel Reponte Casimero is a Filipino professional boxer and YouTuber. He has held world championships in three weight classes; including the IBF junior-flyweight title from 2012 to 2013; the IBF flyweight title in 2016; and the WBO bantamweight title from 2019 to 2022. Quadro Alas is Tagalog for four of a kind when translated, his moniker means Four Aces.
Dmitry Yurievich Pirog is a Russian politician and former professional boxer. In boxing he competed from 2005 to 2012, and held the WBO middleweight title from 2010 to 2012. Although his career was cut short due to a debilitating back injury, he is one of the few professional boxers to win a world championship and retire undefeated.
Naoya Inoue is a Japanese professional boxer. He is a three-division world champion and currently a unified bantamweight world champion, having held the WBA (Super), IBF, Ring magazine titles since 2019 and the WBC title since June 2022. He previously held the WBO junior-bantamweight title from 2014 to 2018, and the WBC light-flyweight title in 2014.
Janibek Alimkhanuly is a Kazakhstani professional boxer who has held the WBO middleweight title since August 2022. As an amateur he won gold medals at the 2013 World Championships, 2013 Asian Championships and 2014 Asian Games. He also represented Kazakhstan at the 2016 Summer Olympics in the middleweight division, losing in the quarter-finals.
Ash-Shakur Stevenson is an American professional boxer. He is a former world champion in two weight classes, having held the WBO featherweight title from 2019 to 2020, the WBO super featherweight title from 2021 to 2022, and the WBC and The Ring super featherweight titles in 2022. As an amateur, he represented the United States at the 2016 Summer Olympics, winning a silver medal in the bantamweight division. As of June 2022, he is ranked as the world's best active super featherweight by the Transnational Boxing Rankings Board, BoxRec and ESPN.
Erling Braut Haaland is a Norwegian professional footballer who plays as a striker for Premier League club Manchester City and the Norway national team. Considered one of the best players in the world, he is known for his speed, strength and finishing.
Viktor Hovland is a Norwegian professional golfer who plays on the PGA Tour. He won the 2018 U.S. Amateur and then became the first Norwegian to win on the PGA Tour and on the European Tour. Hovland picked up his second and third PGA Tour wins at the 2020 and 2021 Mayakoba Golf Classic.
Naoya Inoue vs. Paul Butler, billed as Undisputed, is an upcoming bantamweight unification professional boxing match contested between WBA (Super), WBC, IBF, and The Ring champion, Naoya Inoue, and WBO champion, Paul Butler. The bout will determine a new undisputed bantamweight champion and the first since Enrique Pinder beat Rafael Herrera in 1972. The bout is set to take place on 13 December 2022, at Ariake Arena in Tokyo, Japan.
Vartan Avetisyan
Grieghallen, Bergen, Norway
Timo Laine
Pabellon Camilo Cano, La Nucia, Spain
Vasyl Kondor
Sergei Gorokhov
Arena Riga, Riga, Latvia
Tomas Adamek
Gergo Horvath
Arena Armeec, Sofia, Bulgaria
Arthur Abraham 
Brondby Hallen, Brondby, Denmark
Baptiste Castegnaro
Slavisa Simeunovic
Farouk Daku
Giorgi Beroshvili
Marko Benzon
Oscar Ahlin
Tomas Kugler
Vygaudas Laurinkus