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.
Orlando Salido Rivera is a Mexican former professional boxer who competed from 1996 to 2017. He held multiple world championships in two weight classes, including the International Boxing Federation (IBF) featherweight title in 2010, the World Boxing Organization (WBO) featherweight title twice between 2011 and 2014, and the WBO interim junior lightweight title from 2014 to 2015.
Jorge Luis Linares Palencia is a Venezuelan former professional boxer. He has held world championships in three weight classes, including the WBC featherweight title from 2007 to 2008; the WBA super featherweight title from 2008 to 2009; and the WBA, WBC and Ring magazine lightweight titles between 2014 and 2018.
Vasiliy Anatolyevich Lomachenko, also spelled Vasyl Anatoliyovych Lomachenko, is a Ukrainian professional boxer. He has held multiple world championships in three weight classes from featherweight to lightweight, including the International Boxing Federation (IBF) lightweight title since May 2024. Previously he held unified and Ring magazine titles at lightweight.
Joseph "JoJo" Pedroza Diaz Jr. is a Mexican-American professional boxer who held the WBC interim lightweight title from July 2021 to December 2021. He also held the IBF super featherweight title from 2020 to February 2021 and challenged once for the WBC featherweight title in 2018. At regional level, he held the WBC-NABF, and WBO-NABO featherweight titles between 2015 and 2018. As an amateur he competed at the 2012 Olympics as a bantamweight.
Ash-Shakur Nafi-Shahid Stevenson is an American professional boxer. He has held multiple world championships in three weight classes from featherweight to lightweight, including unified and lineal titles at super featherweight. As an amateur, he represented the United States at the 2016 Summer Olympics, winning a silver medal in the bantamweight 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.
Miguel Ángel Marriaga is a Colombian professional boxer who became the WBC Continental Americas champion in his twelfth match.
George Kambosos Jr is an Australian professional boxer who held the WBA (Super), IBF, WBO and The Ring lightweight titles from 2021 to 2022, the IBO lightweight title from 2023 to May 2024.
Devin Miles Haney is an American professional boxer. He has held multiple world championships in two weight classes, including the undisputed championship at lightweight from 2022 to 2023, and the World Boxing Council (WBC) super lightweight title from 2023 to 2024.
Vasiliy Lomachenko vs. Teófimo López, billed as Winner Takes All, was a unification professional boxing match contested between WBA (Super), WBO, and The Ring lightweight champion, Vasiliy Lomachenko, and IBF lightweight champion, Teófimo López. The bout took place on October 17, 2020, at the MGM Grand Conference Center in Paradise, Nevada. López defeated Lomachenko via unanimous decision (UD) with the judges' scorecards reading 119–109, 117–111, and 116–112.
Masayoshi Nakatani is a Japanese professional boxer. He held the OPBF lightweight title between 2014 and 2019, and won the WBO Inter-Continental lightweight title in 2020.
Devin Haney vs. Jorge Linares was a professional boxing match contested between WBC lightweight champion Devin Haney, and former three-division world champion Jorge Linares. The bout took place at the Michelob Ultra Arena in Las Vegas, Nevada, on May 29, 2021, with Haney's WBC title on the line. Haney won by unanimous decision with the judges scoring the bout 116-112, 116-112, 115-113 in his favor.
Teófimo López vs. George Kambosos Jr. was a lightweight professional boxing match between unified WBA (Super), IBF, WBO, and The Ring lightweight champion Teófimo López, and IBF mandatory challenger George Kambosos Jr. The fight took place on November 27, 2021, at the Hulu Theater, and was broadcast live exclusively on the streaming service DAZN. Kambosos won via split decision with two of the three judges scoring the contest 115–111 and 115–112 in his favor, and the other scoring it 114–113 for López.
Vasiliy Lomachenko vs. Masayoshi Nakatani was a lightweight professional boxing match contested between three-division former unified lightweight world champion Vasiliy Lomachenko, and lightweight contender Masayoshi Nakatani. The bout took place on June 26, 2021, at the Virgin Hotels Las Vegas in Paradise, Nevada. Lomachenko won the fight by ninth-round technical knockout.
Vasiliy Lomachenko vs. Richard Commey, billed as Some Forces Can't Be Contained was a lightweight professional boxing match contested between former 3-division champion, Vasiliy Lomachenko, and former IBF lightweight champion, Richard Commey on December 11, 2021, at Madison Square Garden, in New York City, New York, U.S.
George Kambosos Jr vs Devin Haney, billed as Undisputed, was a lightweight unification professional boxing match contested between WBA (Super), IBF, WBO, and The Ring champion, George Kambosos Jr, and WBC champion, Devin Haney. The bout took place on 5 June 2022, at Docklands Stadium in Melbourne, Australia. Haney defeated Kambosos via unanimous decision to become the first undisputed lightweight champion since Pernell Whitaker in 1990, and the first in the four-belt era.
Boxing in the 2020s is a list of notable fights and events in boxing during the decade from the year 2020 to 2029.
Devin Haney vs. George Kambosos Jr II, billed as Repeat or Revenge, was a lightweight professional boxing match contested between the undisputed WBA (Super), WBC, IBF, WBO, and The Ring lightweight champion, Devin Haney and former unified champion George Kambosos Jr. The bout took place on 15 October 2022, at Rod Laver Arena in Melbourne, Australia.
Vasiliy Lomachenko vs. Luke Campbell was a professional boxing match contested on 31 August 2019, for the WBC, WBA, WBO and The Ring lightweight championship.
