Lennox Claudius Lewis is a boxing commentator and former professional boxer who competed from 1989 to 2003. He is a three-time world heavyweight champion, a two-time lineal champion, and the last heavyweight to hold the undisputed championship. Holding dual British and Canadian citizenship, Lewis represented Canada as an amateur at the 1984 and 1988 Olympics; in the latter, he won a gold medal in the super-heavyweight division.
Heavyweight is a weight class in combat sports and professional wrestling.
Alexander Vladimirovich "Sasha" Povetkin is a Russian former professional boxer who competed from 2005 to 2021. He held the WBA (Regular) heavyweight title from 2011 to 2013, the WBC interim heavyweight title from 2020 to 2021, and challenged twice for the unified heavyweight championship.
David Deron Haye is a British former professional boxer who competed between 2002 and 2018. He held multiple world championships in two weight classes, and was the first British boxer to reach the final of the World Amateur Boxing Championships, where he won a silver medal in 2001.
Orlin Levance Norris is an American former professional boxer who competed from 1986 to 2005. He held the WBA cruiserweight title from 1993 to 1995. As an amateur, he won the National Golden Gloves title. He is the brother of retired former champion Terry Norris.
Vitali Klitschko and Wladimir Klitschko, known as the Klitschko Brothers, are Ukrainian former professional boxers. During their peak years between 2004 and 2015, they were considered the dominant world heavyweight champions of their era, and among the most successful champions in boxing history. In 2011, they entered the Guinness World Records book as the pair of brothers with most world heavyweight title fight wins. In the years following the retirement of heavyweight titlist Lennox Lewis in 2004, the Klitschko brothers would eventually accumulate all four major world heavyweight titles. Known for their exceptionally large physiques, they each developed a style that utilized their athleticism and arm reach to break down opponents.
Tyson Luke Fury is a British professional boxer. He has held the World Boxing Council (WBC) heavyweight title since 2020. Previously, he held the unified heavyweight titles from 2015 to 2016, and the Ring magazine title twice between 2015 and 2022. He also held the International Boxing Organization (IBO) title during his first reign as champion.
Francesco Pianeta is an Italian former professional boxer who competed from 2005 to 2018. He challenged for the unified WBA (Super), IBF, WBO and The Ring heavyweight championship in 2013, the WBA (Regular) title in 2015, and in his final fight for the Lineal heavyweight championship in 2018. At regional level, he held the European Union heavyweight title from 2008 to 2009.
Wladimir Klitschko vs. David Haye, billed as The Talk Ends Now, was a heavyweight unification fight between IBF, WBO, IBO, and The Ring champion Wladimir Klitschko, and WBA champion David Haye. The fight took place in Imtech Arena, Altona, Hamburg, Germany on July 2, 2011. Klitschko defeated Haye by unanimous decision.
Anthony Oluwafemi Olaseni Joshua is a British professional boxer. He is a two-time former unified world heavyweight champion, having held the World Boxing Association (WBA), International Boxing Federation (IBF), and World Boxing Organization (WBO) titles twice between 2016 and 2021. He also held the International Boxing Organization (IBO) title twice during that reign. At regional level, he held the British and Commonwealth heavyweight titles from 2015 to 2016.
Mahmoud Omeirat Charr, previously known as Manuel Charr, is a German professional boxer. He was awarded the World Boxing Association (WBA) heavyweight title in August 2023. He held the same title from 2017 to 2021. Charr has a knockout-to-win percentage of 58%.
Nuri Seferi is an Albanian professional boxer who competes out of Burgdorf, Switzerland.
Wladimir Klitschko vs. Tyson Fury, billed as Kollisionskurs, was a professional boxing match contested between WBA (Unified), IBF, WBO, IBO, and The Ring heavyweight champion, Wladimir Klitschko, and Tyson Fury. The fight took place on 28 November 2015 at the Esprit Arena in Düsseldorf, Germany. Fury was declared the winner by unanimous decision. This ended Klitschko's reign of nearly 10 years, the second longest in heavyweight history. Klitschko was entitled to a rematch per the fight contract. Despite this, Fury was stripped of the IBF heavyweight title for agreeing to the rematch instead of facing the IBF mandatory challenger, Vyacheslav Glazkov.
Trevor Cosmo Bryan Jr is an American professional boxer. He held the WBA (Regular) heavyweight title between 2021 and 2022.
Anthony Joshua vs Wladimir Klitschko was a professional boxing match contested between Anthony Joshua and Wladimir Klitschko. The event took place on 29 April 2017 at Wembley Stadium in London, England, with Joshua's IBF and the vacant WBA (Super) and IBO heavyweight titles on the line. Joshua, 27, won the match via technical knockout (TKO) in the eleventh round with 90,000 fans in attendance. Klitschko, 41, announced his retirement from boxing a few months after the fight. The bout was named Fight of the Year by The Ring and the Boxing Writers Association of America.
Kevin Lerena is a South African professional boxer. He held the IBO cruiserweight title from 2017 to 2021 and challenged for the WBA (Regular) heavyweight title in 2022. As of September 2021, he is ranked as the world's fifth best active cruiserweight by The Ring magazine, fourth by Transnational Boxing Rankings Board and eight by BoxRec.
Deontay Wilder vs. Tyson Fury was a professional boxing match that took place on December 1, 2018, at the Staples Center in Los Angeles, California. Undefeated defending WBC heavyweight champion Deontay Wilder faced undefeated challenger and former unified heavyweight champion Tyson Fury.
Anthony Joshua vs Oleksandr Usyk, billed as The Perfect Storm, was a professional boxing match that was contested between WBA (Super), IBF, WBO, and IBO heavyweight champion, Anthony Joshua, and former undisputed cruiserweight champion and the WBO's heavyweight mandatory challenger, Oleksandr Usyk. The bout took place on 25 September 2021 at the Tottenham Hotspur Stadium, with Usyk winning by unanimous decision.
Derek Chisora vs Tyson Fury II, billed as The Fight for the Right and Bad Blood, was a professional boxing match contested between European and WBO International heavyweight champion, Derek Chisora, and Tyson Fury, with the vacant British heavyweight title also on the line. The fight was a WBO "eliminator", with the winner becoming the mandatory challenger for the WBO heavyweight title, held at the time by Wladimir Klitschko. The bout took place on 29 November 2014 at the ExCel, with Fury winning by corner retirement in the tenth round.
Kem Ljungquist
Roman Kracik
Sporthalle Schuetzenmatt, Burgdorf, Switzerland
Laszlo Ivanyi
Kevin Lerena 
Firat Arslan 
Tyson Fury 
Hallmann Dome, Vienna, Austria
Marcelo Ferreira dos Santos
Manuel Charr 
Radenko Kovac
Josip Jalusic
Boris Trajkovski Sports Arena, Skopje, Macedonia
Pallati i Rinise, Pristina, Kosovo 
Roman Klucar