Michael Gerard Tyson is an American professional boxer who competed from 1985 to 2005, and is scheduled to compete once again in 2024. Nicknamed "Iron Mike" and "Kid Dynamite" in his early career, and later known as "the Baddest Man on the Planet", Tyson is regarded as one of the greatest heavyweight boxers of all time. He reigned as the undisputed world heavyweight champion from 1987 to 1990. Tyson won his first 19 professional fights by knockout, 12 of them in the first round. Claiming his first belt at 20 years, 4 months, and 22 days old, Tyson holds the record as the youngest boxer ever to win a heavyweight title. He was the first heavyweight boxer to simultaneously hold the WBA, WBC and IBF titles, as well as the only heavyweight to unify them in succession. The following year, Tyson became the lineal champion when he knocked out Michael Spinks in 91 seconds of the first round. In 1990, Tyson was knocked out by underdog Buster Douglas in one of the biggest upsets in boxing history.
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 held 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.
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.
Andrzej Jan Gołota, best known as Andrew Golota, is a Polish former professional boxer who competed from 1992 to 2013. He challenged four times for a heavyweight world title, and as an amateur won a bronze medal in the heavyweight division at the 1988 Olympics. Despite his accomplishments and more than 40 professional wins, Golota is perhaps best known for twice being disqualified against Riddick Bowe for repeated low blows in fights that Golota was winning. On October 4, 1997, he became the first Pole to challenge for a heavyweight boxing crown when he fought WBC champion Lennox Lewis at Boardwalk Hall in Atlantic City. In November 2016, Golota was inducted into the Illinois Boxing Hall of Fame.
Franklin Roy Bruno is a British former professional boxer who competed from 1982 to 1996. He won the WBC heavyweight title from Oliver McCall at Wembley Stadium in 1995, in what was his fourth world championship challenge. Bruno faced multiple top-rated heavyweights throughout his career, including two defeats against Mike Tyson in 1989 and 1996, and a defeat against fellow Briton Lennox Lewis in 1993.
Wladimir Klitschko is a Ukrainian former professional boxer who competed from 1996 to 2017. He held multiple heavyweight world championships between 2000 and 2015, including unified titles between 2008 and 2015. During this time also held the International Boxing Organization (IBO) and Ring magazine titles.
Daniel Peter Williams is a British professional boxer. He has challenged once for the WBC and the Ring magazine heavyweight titles in 2004. At regional level, he has held multiple heavyweight championships, including the Commonwealth title twice between 1999 and 2006; the British title twice between 2000 and 2010; and challenged once for the European title in 2003. As an amateur, he won bronze medals at the 1993 European Championships and 1994 Commonwealth Games. Williams is best known for scoring an upset knockout victory against Mike Tyson in 2004.
Audley Hugh Harrison, is a British former professional boxer who competed from 2001 to 2013. As an amateur, he represented Great Britain at the 2000 Olympics, winning a gold medal in the super-heavyweight division and becoming the first ever British boxer to win Olympic gold in that division. Harrison turned professional the following year after signing a contract with BBC Sport, and went on to have seventeen fights on the network before their cancellation of all boxing broadcasts.
Lou Savarese is an American former professional boxer and mixed martial artist who competed 1989 to 2013. He is from Greenwood Lake, New York. In January 1996, Savrese won IBF USBA Heavyweight title by knocking out former contender Buster Mathis Jr. in seven rounds. On April 26, 1997, he challenged for the Lineal Heavyweight Championship, and lost by a controversial split decision to the Lineal World Heavyweight Champion George Foreman. A year later on June 25, 1998, Savarese won the IBA World Heavyweight title against former Undisputed World Heavyweight Champion Buster Douglas by way of a first-round knockout. On June 24, 2000, he lost by a first-round technical knockout to former Undisputed World Heavyweight Champion Mike Tyson. On September 22, 2002, Savarese won the vacant WBO Inter-Continental Heavyweight title, by way of a fifth-round TKO against former two-time World Heavyweight Champion Tim Witherspoon. On June 30, 2007, Savarese fought former four-time World Heavyweight Champion Evander Holyfield. He fought with great heart but lost by unanimous decision to a sharp looking Holyfield. Savarese announced after the fight that he had given it his all but it wasn't good enough, and this would be his last bout.
Francois "Frans" Botha is a South African former professional boxer and kickboxer. He competed in boxing from 1990 to 2014, and is perhaps best known for winning the IBF heavyweight title against Axel Schulz in 1995, but was later stripped after failing a drug test. He later challenged twice for world heavyweight titles in 2000 and 2002. Botha has competed against former Heavyweight Champions Mike Tyson, Lennox Lewis, Michael Moorer and Evander Holyfield late in their respective careers. Botha competed once in mixed martial arts in 2004.
Donovan "Razor" Ruddock is a Jamaican-born Canadian former professional boxer who competed from 1982 to 2001 and in 2015. He is known for his two fights against Mike Tyson in 1991, a fight against Lennox Lewis in 1992, and a fight with Tommy Morrison in 1995. Ruddock was also known for his exceptionally heavy punching; some of the best examples of his left hand and overall power was his knockouts of former WBA heavyweight champions James Smith in 1989, Michael Dokes in 1990, and Greg Page in 1992. His favored weapon at the ring proved to be a highly versatile half-hook, half-uppercut left-handed punch he called "The Smash" which accounted for the majority of his knockout wins -- it also happened to be his major downside throughout his career. Being a left-handed puncher fighting out of the orthodox stance, he didn't throw right handed punches during most knockout flurries.
Dohonna Malik Scott is an American boxing trainer and former professional boxer who competed from 2000 to 2016.
David Price is a British former professional boxer who competed from 2009 to 2019. At regional level, he held multiple heavyweight championships, including the British and Commonwealth titles from 2012 to 2013; and challenged once for the European title in 2015. As an amateur, he won a bronze medal at the 2008 Olympics; gold at the 2006 Commonwealth Games and 2008 EU Championships; and three ABA titles; all in the super-heavyweight division.
Tyson Luke Fury is a British professional boxer. He has held multiple world championships in the heavyweight division, including unified titles from 2015 to 2016, the Ring magazine title twice between 2015 and 2022, and the World Boxing Council (WBC) title from 2020 to 2024. He also held the International Boxing Organization (IBO) title during his first reign as champion.
Derek Chisora is a Zimbabwean-British professional boxer. He has challenged twice for the WBC heavyweight title in 2012 and 2022. At regional level, he has held multiple heavyweight championships, including the British and Commonwealth titles from 2010 to 2011, and the European title from 2013 to 2014. As an amateur, he won the ABA super-heavyweight title in 2006.
Tatsuya Mizuno is a Japanese mixed martial artist currently competing in the Middleweight division. A professional competitor since 2006, he has fought for DREAM, Pancrase, DEEP, M-1 Global, ProElite, ONE FC, K-1, and also participated in the Dynamite!! 2010 event.
Mike Tyson vs. Donovan Ruddock, billed as Fight of the Year, was a professional boxing match contested on March 18, 1991 at the Mirage in Paradise, Nevada. At the time the two fighters were the top two ranked contenders for the WBC, WBA, and IBF world heavyweight championships that were at the time held by Evander Holyfield. The bout was a twelve-round championship eliminator fight, with the winner becoming the mandatory challenger to Holyfield's crown.
Hughie Lewis Fury is a British professional boxer. He challenged once for the World Boxing Organization (WBO) heavyweight title in 2017, and at regional level held the British heavyweight title in 2018. As an amateur he represented England at the 2012 Youth World Championships, winning a gold medal in the super-heavyweight division and becoming the first British boxer to do so.
Ilir Latifi is a Swedish mixed martial artist of Albanian origin who fights in the Heavyweight division, most recently in the Ultimate Fighting Championship. A two-time national wrestling champion and a professional MMA competitor since 2008, Latifi has also competed in Shark Fights, Rumble of The Kings, and GLORY.
Einar Otto Wallin is a Swedish professional boxer. He held the World Boxing Association (WBA) Continental heavyweight title in 2017, the European Union heavyweight title in 2018, and the WBA Inter-Continental heavyweight title in 2023. As of March 2024, Wallin is ranked #8 by the IBF.
Otto Wallin 
Irakli Gvenetadze
Alsterdorfer Sporthalle, Hamburg, Germany
Saul Farah
Samir Kurtagic
Circus, Bucharest, Romania
Evgeny Orlov
Palais des Sports, Agde, France
Michael Sprott 
Darnell Wilson 
Haris Radmilovic
Tomas Mrazek
TAP 1, Copenhagen, Denmark
Andreas Kapp
Aziz Baran
Gianluca Sirci
Patryk Kowoll