John Ruiz is an American former professional boxer who competed from 1992 to 2010, and held the WBA heavyweight title twice between 2001 and 2005. Ruiz is of Puerto Rican descent, and is the first Latino boxer to win a world heavyweight title.
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 remains the only boxer in history to win the undisputed championship in two weight classes in the three 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.
Roy Levesta Jones Jr. is an American former professional boxer who holds dual American and Russian citizenship. He competed in boxing from 1989 to 2018, and held multiple world championships in four weight classes, including titles at middleweight, super middleweight, light heavyweight, and heavyweight, and is the only boxer in history to start his professional career at light middleweight and go on to win a heavyweight title. As an amateur, he represented the United States at the 1988 Summer Olympics, winning a silver medal in the light middleweight division after one of the most controversial decisions in boxing history.
Michael Lee Moorer is an American former professional boxer who competed from 1988 to 2008. He won a world championship on four occasions in two weight classes, having held the WBO light heavyweight title from 1988 to 1991; compiling 22 straight KOs in 22 fights and the WBO heavyweight title from 1992 to 1993; the unified WBA, IBF and lineal heavyweight titles in 1994; and regained the IBF heavyweight title again from 1996 to 1997 becoming a three-time heavyweight world champion.
James Nathaniel Toney is an American former professional boxer who competed from 1988 to 2017. He held multiple world championships in three weight classes, including the IBF and lineal middleweight titles from 1991 to 1993, the IBF super middleweight title from 1993 to 1994, and the IBF cruiserweight title in 2003. Toney also challenged twice for a world heavyweight title in 2005 and 2006, and was victorious the first time but was later stripped due to a failed drug test. Overall, he competed in fifteen world title fights across four weight classes.
Antonio Deon Tarver is an American former professional boxer and boxing commentator. In boxing he competed from 1997 to 2015, and held multiple light heavyweight world championships, including the WBA (Unified), WBC, IBF and Ring magazine titles, as well as the IBO light heavyweight and cruiserweight titles.
Samuel Okon Peter(Listen) is a Nigerian professional boxer. He held the WBC heavyweight title in 2008, when he stopped Oleg Maskaev in six rounds. In his prime, he was known for his rivalry with the Klitschko brothers, having faced Wladimir twice and Vitali once. He was ranked by The Ring among ten best heavyweights from 2005 to 2008, reaching his highest ranking of world No.2 in 2007, and by BoxRec as the world's No.6 heavyweight at the conclusion of 2004 and 2005 and as No.5 heavyweight in 2006. Peter is known for his punching power and holds a 78.9% knockout-to-win ratio.
Jean-Marc Gilbert Mormeck is a French former professional boxer who competed from 1995 to 2014. He is a two-time unified world cruiserweight champion, having held the WBA, WBC and The Ring world titles twice between 2005 and 2007. He was the first boxer to hold unified cruiserweight title since Evander Holyfield in 1988, and the first fighter to hold The Ring cruiserweight title since Carlos De León in 1987. He was ranked by BoxRec as the world's top 10 cruiserweight from 2001 to 2005 and in 2007, and was ranked No.1 in 2003 and 2004. Mormeck also challenged for the unified world heavyweight title in 2012.
O'Neil Bell was a Jamaican professional boxer who competed from 1998 to 2011. He held the undisputed cruiserweight title in 2006 and the lineal cruiserweight title from 2006 to 2007.
Chad Dawson is an American former professional boxer who competed from 2001 to 2019. He has held multiple light heavyweight world championships, and was one of the most highly regarded boxers in that division between 2006 and 2013. Dawson rose to prominence on the world stage in 2007, when he defeated Tomasz Adamek to become the WBC light heavyweight champion. After vacating that title, he defeated Antonio Tarver in 2008 to win the IBF and IBO titles, and defeated him in a rematch in 2009.
Shane Aaron Cameron is a New Zealand professional boxer. He is a former Commonwealth cruiserweight champion, having also held several regional titles at heavyweight. As an amateur he won a bronze medal in the heavyweight division at the 2002 Commonwealth Games. Outside of boxing, he placed fifth in the 2015 series of Dancing With the Stars New Zealand.
Tomasz "Tomek" Adamek is a Polish former professional boxer who competed from 1999 to 2018. He held world championships in two weight classes, including the WBC light heavyweight title from 2005 to 2007, and the IBF and Ring magazine cruiserweight titles from 2008 to 2009. He also held the IBO cruiserweight title in 2007, and challenged once for the WBC heavyweight title in 2011. BoxRec ranks Adamek as the second best Polish boxer of all time, pound for pound. He is the first Polish boxer to win The Ring title.
Monte Barrett is an American former professional boxer who competed from 1996 to 2014. He challenged once for the WBA heavyweight title in 2006, and fought many top heavyweight champions and contenders during his career.
Adolpho Washington is a retired professional boxer. He held the IBF cruiserweight title from 1996 until 1997, and challenged twice for WBA world titles at cruiserweight and light heavyweight.
Eric Fields is an American professional boxer. He is from Ardmore, Oklahoma.
Steven Ormain Cunningham is an American professional boxer who held the IBF cruiserweight title twice between 2007 and 2011. His nickname, "USS", is a reference to his US Navy service on the aircraft carriers USS America and USS Enterprise between 1994 and 1998.
Edward Chambers is an American former professional boxer. He challenged once for a unified world heavyweight title in 2010. He was ranked as the fourth best heavyweight in the world by The Ring at the conclusion of 2009. A defensively-oriented fighter, Chambers has been widely credited for his counterpunching skills and particularly praised for his hand speed and footwork. He has also been one of the first heavyweights with ability to switch between fighting orthodox and southpaw.
Olawale O. "Ola" Afolabi is a British professional boxer. He is a two-time former WBO interim cruiserweight champion, as well as a two-time former IBO cruiserweight champion. Nicknamed "Kryptonite", Afolabi was known in the ring for his slickness, counterpunching skills and durability. Born to Nigerian parents, Afolabi resides in California, where he also trained for the most of his career.
Bernard Hopkins Jr. is an American former professional boxer who competed from 1988 to 2016. He is one of the most successful boxers of the past three decades, having held multiple world championships in two weight classes, including the undisputed middleweight title from 2001 to 2005, and the lineal light heavyweight title from 2011 to 2012.
Yuniel Dorticós Pao is a Cuban professional boxer. He is a former two-time cruiserweight world champion, having held the WBA title from 2017 to 2018 and the IBF title from 2019 to September 2020. As of August 2022, he is ranked as the world's third best active cruiserweight by The Ring magazine and the Transnational Boxing Rankings Board, and sixth by BoxRec.
Alexander Frenkel 
Michael Simms 
Carl Davis Drumond
London, England
Guillermo Jones 
Louis Azille
O'Neil Bell 
Rogerio Lobo 
Errol Sadikovski