
Santos Saúl Álvarez Barragán, better known as "Canelo" Álvarez, is a Mexican professional boxer who has won world championships in four weight classes from light middleweight to light heavyweight. He is currently a unified super middleweight world champion, having held the WBA (Super), WBC, and Ring magazine titles since 2020.

Cristobal Arreola is an American professional boxer who has challenged three times for the WBC heavyweight title. He was ranked by BoxRec as the world's No.8 heavyweight at the conclusion of 2007 and as No.7 heavyweight from 2008 to 2010.

Raymundo Beltrán is a Mexican professional boxer who held the WBO lightweight title in 2018. At regional level, he held the WBC–NABF lightweight title from 2016 to 2018.

Andre Michael Berto is a professional boxer who holds dual American and Haitian citizenship. He is a two-time former welterweight world champion, having held the WBC and IBF titles between 2008 and 2011, as well as the WBA interim title in 2015. As an amateur he won the National Golden Gloves tournament in 2001 and 2003 (welterweight), and would represent the U.S. at the 2003 World Championships, winning a welterweight bronze medal. He also represented Haiti at the 2004 Olympics, reaching the opening round of the welterweight bracket.

Francois "Frans" Botha is a South African former professional boxer and kickboxer. In boxing he competed 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, Wladimir Klitschko, Lennox Lewis, Michael Moorer and late in their respective careers, Evander Holyfield. Botha participated once in mixed martial arts in 2004.
Shannon Briggs is an American professional boxer. A veteran of the sport since 1992, he has held a world heavyweight championship twice, including the lineal title from 1997 to 1998, and the WBO title from 2006 to 2007. Briggs is known for his formidable punching power and aggression, possessing an 88.3% knockout-to-win percentage with 37 knockout wins in the first round. Undisputed heavyweight champion Lennox Lewis stated in 2015 that Briggs had the fastest hands and best punching power of any opponent he ever faced. He holds notable wins over heavyweight champions George Foreman, Ray Mercer and Siarhei Liakhovich.

Lucas Browne is an Australian professional boxer, former mixed martial artist and kickboxer. He held the WBA (Regular) Heavyweight title in 2016 when he stopped Ruslan Chagaev in an upset victory and by doing so became the first heavyweight champion from Australia. In boxing, he held the Australian and Commonwealth heavyweight titles between 2012 and 2015. Browne was stripped of his world title two months later for failing a drug test.In November, Browne produced another positive drug test which he says was due to him buying (legally) a pre-workout supplement without taking the time to properly vet it for compatibility with the WBA's anti-doping regulations.

Lucian Bute is a Romanian-Canadian former professional boxer who competed from 2003 to 2017. He held the IBF super-middleweight title from 2007 to 2012, successfully making nine consecutive defenses and reaching a peak ranking of number one in the division by The Ring magazine.

Julio César Chávez Carrasco, best known as Julio César Chávez Jr., is a Mexican professional boxer who held the WBC middleweight title from 2011 to 2012. He is the son of retired boxing legend Julio César Chávez and older brother of Omar Chávez.

Andrzej Fonfara is a Polish former professional boxer who competed from 2006 to 2018, and held the IBO light heavyweight title from 2012 to 2013. He also challenged twice in his career for the WBC light heavyweight title, and once for The Ring light heavyweight belt. He was based in Chicago for most of his career.

Tyson Luke Fury is a British professional boxer. He is a two-time world heavyweight champion, having held the WBC, The Ring magazine and lineal titles since defeating Deontay Wilder in February 2020; previously he held the unified WBA (Super), IBF, WBO, IBO, The Ring, and lineal titles after defeating Wladimir Klitschko in 2015. With his defeat of Wilder, Fury became the third heavyweight, after Floyd Patterson and Muhammad Ali, to hold The Ring magazine title twice. As of December 2020, Fury is ranked as the world's best active heavyweight by ESPN, the Transnational Boxing Rankings Board (TBRB), and BoxRec, as well as the second-best active boxer, pound for pound, by BoxRec, sixth by the TBRB, and eighth by ESPN. Fury has been ranked by BoxRec as the No.1 heavyweight in the world at the conclusion of 2015, 2018 and 2019.

Abdul-Bari "Barry" Awad, best known by his nickname of "Kid Galahad", is a British professional boxer who held the European, British, and Commonwealth super-bantamweight titles between 2013 and 2015. His ring name was chosen by trainer Brendan Ingle after a character played by Elvis Presley in the 1962 film of the same name. From 2014 to 2016, Galahad served a ban from boxing due to doping.

Yuriorkis Gamboa Toledano is a Cuban professional boxer. He is a former unified featherweight world champion, having held the WBA and IBF titles between 2009 and 2011, as well as the WBA interim championship in both the super featherweight and lightweight divisions. As an amateur he won a gold medal in the flyweight division at the 2004 Olympics, and bronze in the featherweight division at the 2005 World Championships.

Joan Guzmán is a Dominican former professional boxer who competed from 1997 to 2014. He held world championships in two weight classes, including the WBO junior featherweight title from 2002 to 2005, and the WBO junior lightweight title from 2006 to 2008.

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 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.

Lloyd Honeyghan is a British former professional boxer who competed from 1980 to 1995. He reigned as the undisputed welterweight champion from 1986 to 1987; and held the WBC, Ring magazine and lineal welterweight titles twice between 1986 and 1989. At regional level he held the British, European and Commonwealth welterweight titles between 1983 and 1985, as well as the Commonwealth super-welterweight title from 1993 to 1994.

Roy Levesta Jones Jr. is an American former professional boxer, boxing commentator, boxing trainer, rapper, and actor 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.

Vitali Volodymyrovych Klitschko is a Ukrainian politician and former professional boxer. He currently serves as Mayor of Kyiv and head of the Kyiv City State Administration, having held both offices since June 2014. Klitschko is a former leader of the Petro Poroshenko Bloc and a former Member of the Ukrainian Parliament. He became actively involved in Ukrainian politics in 2005 and combined this with his professional boxing career until his retirement from the sport in 2013.

Enzo Maccarinelli is a Welsh former professional boxer who competed from 1999 to 2016. He held the WBO cruiserweight title from 2006 to 2008, and the European and British cruiserweight titles between 2010 and 2012.

Jameel McCline is an American former professional boxer. He challenged for the world heavyweight title on an unprecedented four occasions, losing all four attempts to Wladimir Klitschko, Chris Byrd, Nikolai Valuev and Samuel Peter. Despite never winning a world title, McCline did defeat former champions and top contenders in Michael Grant, Lance Whitaker, Al Cole, Cedric Boswell and Shannon Briggs. McCline retired in 2012 at the age of 42.

Érik Isaac Morales Elvira is a Mexican former professional boxer who competed from 1993 to 2012. He is the first Mexico-born boxer in history to win world titles in four different weight classes, having held the WBC super bantamweight title from 1997 to 2000, the WBC featherweight twice between 2001 and 2003, the unified WBC and IBF super featherweight titles in 2004, and the WBC super lightweight title from 2011 to 2012.

Thomas David Morrison was an American professional boxer who competed from 1988 to 1996, and held the WBO heavyweight title in 1993. He was ranked as the world's No.10 heavyweight by BoxRec at the conclusion of 1992. He retired from boxing in 1996 when he tested positive for HIV. Morrison is also known for his acting career, having starred alongside Sylvester Stallone in the 1990 film Rocky V as Tommy Gunn.

Shane Andre Mosley, often known by his nickname "Sugar" Shane Mosley, is an American former professional boxer who competed from 1993 to 2016. He held multiple world championships in three weight classes, including the IBF lightweight title; the WBA (Super) and WBC welterweight titles; and the WBA (Super), WBC, and Ring magazine light middleweight titles. He is also a former lineal champion at welterweight (twice) and light middleweight.

Alexander Vladimirovich "Sasha" Povetkin is a Russian professional boxer who has held the WBC interim heavyweight title since August 2020. Previously, he held the WBA (Regular) heavyweight title from 2011 to 2013 and has challenged twice for the unified heavyweight championship.

Brandon Lee Ríos is an American professional boxer. He held the WBA lightweight title in 2011 and has challenged once for the WBO welterweight title in 2015. Nicknamed "Bam Bam", Ríos is known for his aggressive pressure fighting style, formidable punching power, and exceptionally durable chin.

Tyrone Clinton Spong is a Surinamese-Dutch professional boxer and former kickboxer and mixed martial artist. He is the current WBC Latino Heavyweight Champion and WBO Latino Heavyweight Champion. In kickboxing, he is the former WFCA Cruiserweight champion, Glory 95kg Slam Champion and It's Showtime 95MAX World champion.

Mia Rosales St. John is a Mexican-American professional boxer and former World Boxing Council (WBC) champion in the super welterweight division. She is also the IBA and IFBA lightweight champion. She is also a model, businesswoman, and taekwondo champion.
Adnan Ćatić, best known as Felix Sturm, is a German-Bosnian professional boxer. He has held multiple world championships in two weight classes, including the WBO middleweight title from 2003 to 2004, the WBA middleweight title twice between 2006 and 2012, the IBF middleweight title from 2013 to 2014, and the WBA (Super) super-middleweight title in 2016. As an amateur, Sturm won a gold medal at the 2000 European Championships in the light-middleweight division.

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 (Super), WBC, IBF and Ring magazine titles, as well as the IBO light heavyweight and cruiserweight titles.

Anthony Tyrone "Tony" Thompson is an American professional boxer. He has challenged twice for unified world heavyweight titles, in 2008 and 2012, both times against Wladimir Klitschko. Described by many observers and fighters as "awkward", Thompson was considered the gatekeeper of the heavyweight division during the Klitschko Era. Thompson was ranked by BoxRec among ten best heavyweights in the world from 2004 to 2013, reaching his highest ranking of world No.5 in 2006.

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.

Fernando Javier Vargas is an American former professional boxer who competed from 1997 to 2007. He was a two-time light middleweight world champion, having held the IBF title from 1998 to 2000, and the WBA title from 2001 to 2002. With his IBF title win, Vargas became the youngest boxer in history to win a light middleweight world title, at age 21. As an amateur he won a bronze medal in the light welterweight division at the 1995 Pan American Games, and reached the second round of the welterweight bracket at the 1996 Olympics.

Mariusz Wach is a Polish professional boxer. He challenged once for the unified WBA (Super), IBF, WBO, and IBO heavyweight titles against Wladimir Klitschko in 2012.
Andrzej Wawrzyk is a Polish heavyweight boxer. Wawrzyk is a former world heavyweight title challenger and the current heavyweight champion of Poland. He has faced former world champions and contenders Frans Botha, Danny Williams, Alexander Povetkin, Dennis Bakhtov, and Albert Sosnowski.

Anthony Victor James Yoka is a French professional boxer. As an amateur he represented France at the 2015 World Championships and 2016 Olympics, winning gold medals in the super-heavyweight division.