Konstantin Borisovich "Kostya" Tszyu is a Russian Australian former professional boxer who competed from 1992 to 2005. He held multiple light-welterweight world championships, including the undisputed and lineal titles between 2001 and 2005. Tszyu was an exceptional all-around boxer-puncher who relied heavily on accuracy, timing, and carried formidable punching power; he is often regarded as one of the hardest-punching light-welterweights in the division's history.
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.
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.
Paolo Vidoz is an Italian former professional boxer who competed from 2001 to 2011 and held the European heavyweight title from 2005 to 2006. As an amateur Vidoz won a bronze medal at the 2000 Olympics in the super-heavyweight bracket, as well as a bronze medal at the 1997 and 1999 World Championships and a silver medal at the 2000 European Championships.
Rustam Saidov is a boxer from Uzbekistan, who competed in the Super Heavyweight (+91 kg) at the 2000 Summer Olympics and won the bronze medal.
Mukhtarkhan Qabylanbekuly Dildabekov is a Kazakh boxer, best known to win the silver medal in the Super Heavyweight division (+91 kg) at the 2000 Summer Olympics.
Odlanier Solís Fonte is a Cuban professional boxer. He has challenged once for the WBC heavyweight title in 2011, and is a former top-rated contender in that division. As an amateur heavyweight, Solis was one of the most celebrated and decorated amateur stars of the 2000s, winning a gold medal at the 2004 Olympics, and three consecutive golds at the World Championships in 2001, 2003, and 2005. Odlanier Solís beat Luis Ortiz multiple times in the amateurs, never losing to him.
Bermane Stiverne is a Haitian-Canadian professional boxer. He held the WBC heavyweight title from 2014 to 2015. He also challenged twice for world titles in 2017 and 2021.
Michael Hunter, Jr. is an American professional boxer who challenged for the WBO junior heavyweight title in 2017. As an amateur he won the National Championships as a super heavyweight in 2007 and 2009, and qualified for the 2012 Olympics in the heavyweight division. As of November 2020, he is ranked as the world's seventh best active heavyweight by BoxRec, sixth by the Transnational Boxing Rankings Board, and eighth by The Ring magazine. He is the son of late professional boxer Mike "the Bounty" Hunter.
Vyacheslav Valeriyovych Glazkov is a Ukrainian former professional boxer who competed from 2009 to 2016. He challenged once for the vacant IBF heavyweight title in 2016, losing to Charles Martin due to an anterior cruciate ligament injury. The injury eventually forced him to retire from the sport.
Zhang Zhilei is a Chinese professional boxer. As an amateur he won bronze medals at the 2007 and 2009 World Championships, and a silver medal at the 2008 Olympics, all in the super-heavyweight division. As of September 2022 he is rated as the 11th best heavyweight by The Ring.
Oleksiy Mazikin is a Ukrainian boxer best known to win the silver medal at the 2001 World Championships in the Men's Super Heavyweight division.
Steffen Kretschmann is a German boxer best known for winning the bronze medal 1999 and 2003 at the amateur world championships in the 201 lbs/91 kg division.
Muamer Hukić, best known as Marco Huck, is a German professional boxer. He held the WBO cruiserweight title from 2009 to 2015, and is the joint-longest reigning cruiserweight world champion of all time, having made thirteen consecutive successful defenses, a division record shared with Johnny Nelson. Huck also held the IBO cruiserweight title from 2016 to 2017, the European cruiserweight title from 2008 to 2009, and has challenged once for the WBA (Regular) heavyweight title in 2012.
Pedro Carrión Sago is a Cuban heavyweight boxer best known to win several medals in international amateur competition at super heavyweight.
Sebastian Köber is a German boxer, who won the Heavyweight bronze medal at the 2000 Summer Olympics in Sydney, Australia. Three years later, at the 2003 World Amateur Boxing Championships in Bangkok, he once again finished in third place.
Roberto Cammarelle is an Italian amateur boxer, best known for winning the World Amateur Boxing Championships in 2007 (Chicago) and 2009 (Milan) as a super heavyweight and a gold medal at the 2008 Olympic Games in Beijing. He won a silver medal in 2012 London Olympic Games, losing to Anthony Joshua.
Ivan Fyodorovich Dychko is a Kazakhstani professional boxer. As an amateur he won bronze medals at the 2012 and 2016 Summer Olympics.
Mahmoud Omeirat Charr, previously known as Manuel Charr, is a German professional boxer who held the WBA (Regular) heavyweight title from 2017 to 2021, and challenged for the WBC heavyweight title in 2012. Charr has a knockout-to-win percentage of 58%.
Johann Duhaupas is a French professional boxer who challenged for the WBC heavyweight title in 2015. At regional level he has held multiple heavyweight titles, including the European Union title from 2013 to 2014.
Neven Pajkic 
Jason Bergman
Jerry Butler
Alvaro Morales
Mickey Richards