Shannon Briggs is an American professional boxer. A twenty-year veteran of the sport, he is twice a former world heavyweight champion, having held the lineal title from 1997 to 1998, and the WBO title from 2006 to 2007.
Michael Gerard Tyson is an American former professional boxer who competed from 1985 to 2005. He reigned as the undisputed world heavyweight champion and holds the record as the youngest boxer to win a heavyweight title at 20 years, four months and 22 days old. Tyson won his first 19 professional fights by knockout or stoppage, 12 of them in the first round. He won the WBC title in 1986 after stopping Trevor Berbick in the second round, and added the WBA and IBF titles after defeating James Smith and Tony Tucker in 1987. This made Tyson the first heavyweight boxer to simultaneously hold the WBA, WBC and IBF titles, and the only heavyweight to successively unify them.
Tyson Luke Fury is a British professional boxer. In 2015, he won the unified WBA (Super), IBF, WBO, IBO, The Ring magazine, and lineal heavyweight titles by defeating long-reigning world champion Wladimir Klitschko in Germany. The victory earned him Fighter of the Year and Upset of the Year awards by The Ring. As of December 2019, Fury is ranked as the world's best active heavyweight by The Ring, second by the Transnational Boxing Rankings Board, and fourth by BoxRec.
Floyd Joy Mayweather Jr. is an American professional boxing promoter and former professional boxer. He competed from 1996 to 2007, 2009 to 2010, 2011 to 2015, and made a one-fight comeback in 2017. During his career, he held multiple world titles in five weight classes and the lineal championship in four weight classes, and retired with an undefeated record. As an amateur, Mayweather won a bronze medal in the featherweight division at the 1996 Olympics, three U.S. Golden Gloves championships, and the U.S. national championship at featherweight.
Billy Joe Saunders is a British professional boxer. He has held world championships in two weight classes having held the WBO middleweight title from 2015 to 2018, the WBO super middleweight since 2019 and previously the European, British, and Commonwealth middleweight titles between 2012 and 2015. As an amateur, Saunders represented Great Britain at the 2008 Olympics, reaching the second round of the welterweight bracket. In the same year, he won gold at the EU Championships.
Deontay Leshun Wilder is an American professional boxer. He has held the WBC heavyweight title since 2015, and in doing so became the first American world heavyweight champion in nine years, which was the longest period of time in boxing history without an American heavyweight champion.
Santos Saúl Álvarez Barragán, best known as "Canelo" Álvarez, is a Mexican professional boxer who is a four-weight world champion. He has held the unified WBA (Super), WBC, Ring and lineal middleweight titles since 2018, the IBF middleweight title from May to August 2019, the WBA (Regular) super middleweight title since 2018 and the WBO light heavyweight title since November 2019. He previously held the WBA (Unified), WBC and Ring light middleweight titles between 2011 and 2013; the WBC, Ring and lineal middleweight titles between 2015 and 2018, in addition to the WBO light middleweight title from 2016 to 2017.
Olajide William "JJ" Olatunji, better known as KSI, is a British YouTube personality, internet celebrity, comedian, actor, rapper and white-collar boxer. After establishing himself on his YouTube channel, which, as of August 2018, has reached over four billion video views and more than 19 million subscribers as the 41st most subscribed channel, he has also become well known for his music. KSI released his debut extended play Keep Up in 2016, reaching number one on the UK R&B Albums Chart as well as charting in several other countries.
Anthony Oluwafemi Olaseni Joshua, is a British professional boxer. He is a two-time unified heavyweight champion, having held the WBA (Super), IBF, WBO, and IBO titles since December 2019 and previously between 2016 and June 2019. At regional level, he held the British and Commonwealth heavyweight titles from 2014 to 2016.
Wladimir Wladimirowitsch Klitschko is a Ukrainian former professional boxer who competed from 1996 to 2017. He held the world heavyweight championship twice, including the WBA (Super), IBF, WBO, IBO, Ring magazine and lineal titles. A strategic and intelligent boxer, Klitschko is considered to be one of the best heavyweight champions of all time. He was known for his exceptional knockout power, using a strong jab, straight right hand and left hook, as well as excellent footwork and mobility, unusual for boxers of his size.
Charles L. "Sonny" Liston was an American professional boxer who competed from 1953 to 1970. A dominant contender of his era, he became the world heavyweight champion in 1962 after knocking out Floyd Patterson in the first round, repeating the knockout the following year in defense of the title; in the latter fight he also became the inaugural WBC heavyweight champion. Liston was particularly known for his toughness, formidable punching power, long reach, and intimidating appearance.
Vasyl Anatoliyovych Lomachenko is a Ukrainian professional boxer. He is currently a unified lightweight world champion, having held the WBA (Super), WBO and The Ring magazine titles since 2018, and the WBC title since 2019. He was previously the WBO featherweight and junior lightweight world champion between 2014 and 2018.
Evander Holyfield is an American former professional boxer who competed from 1984 to 2011. He reigned as the undisputed champion at cruiserweight in the late 1980s and at heavyweight in the early 1990s, and remains the only boxer in history to win the undisputed championship in two weight classes. 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 and between 1996 and 1999; and the WBA title for a fourth time from 2000 to 2001.