Floyd Patterson (January 4, 1935 – May 11, 2006) was an American professional boxer who competed from 1952 to 1972 and twice reigned as the world heavyweight champion between 1956 and 1962. At the age of 21, he became the youngest boxer in history to win the title and was also the first heavyweight to regain the title after losing it. As an amateur he won a gold medal in the middleweight division at the 1952 Summer Olympics.

Patterson was ranked among BoxRec’s 10 best heavyweights in the world 16 times, reaching the No.1 spot at the conclusion of 1956 and 1957. In 1956 and 1960, Patterson was voted Fighter of the Year by The Ring magazine and the Boxing Writers Association of America. He was inducted into the International Boxing Hall of Fame in 1991.

Wladimir Klitschko is a Ukrainian former professional boxer who competed from 1996 to 2017. As an amateur, Klitschko represented Ukraine at the 1996 Olympics, winning a gold medal in the super-heavyweight division. He also won gold in the military world championships and the junior Olympics as well as silver in the European championships. As a pro, He held the world heavyweight championship twice, including the WBA (Super), IBF, WBO, IBO, and Ring magazine 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 great footwork and mobility, unusual for boxers of his size.

Roy Jones Jr. (born January 16, 1969) 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.

Claressa Maria Shields (born March 17, 1995) is an American professional boxer and mixed martial artist. She has held multiple world championships in three weight classes, including the undisputed female light middleweight title since March 2021; the undisputed female middleweight title from 2019 to 2020; and the unified WBC and IBF female super middleweight titles from 2017 to 2018. Shields currently holds the record for becoming a two and three-weight world champion in the fewest professional fights. As of November 2020, she is ranked as the world’s best active female light middleweight by The Ring and BoxRec, as well as the best active female boxer, pound for pound, by Lineal Boxing Champion and ESPN, second by The Ring, and fourth by BoxRec.

Shields is the only boxer in history, female or male, to hold all four major world titles in boxing WBA, WBC, IBF and WBO simultaneously, in two weight classes. She is the first woman to win lineal championships in two weight classes. In a decorated amateur career, Shields won gold medals in the women’s middleweight division at the 2012 and 2016 Olympics, making her the first American boxer—female or male—to win consecutive Olympic medals.

Kevin Philip Kelley (born June 29, 1967) is an American former professional boxer who competed from 1988 to 2009, and held the WBC featherweight title from 1993 to 1995. Kelley won two New York Golden Gloves Championships as well as the 1985 119 lb Sub-Novice Championship and the 1986 119 lb Open Championship.

Juan Francisco Estrada Romero (born April 14, 1990) is a Mexican professional boxer. He is a two-weight world champion, having held the WBC, Ring magazine and lineal super flyweight titles since 2019, and previously, the WBA (Unified) and WBO flyweight titles between 2012 and 2015. He also challenged once for the WBA light flyweight title in 2012. As of January 2021, Estrada is ranked as the world’s ninth best active boxer, pound for pound, by the Transnational Boxing Rankings Board (TBRB), and eighth by The Ring. He is also ranked as the world’s best active super flyweight by The Ring and the TBRB and the world’s second-best by BoxRec.

Alexander Vladimirovich “Sasha” Povetkin (born 2 September 1979) 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.

As an amateur, Povetkin won gold medals in the super-heavyweight division at the 2002 and 2004 European Championships, 2003 World Championships, and 2004 Olympics. After turning professional in 2005, he defeated Ruslan Chagaev to claim the vacant WBA (Regular) title in 2011. He challenged unified champion Wladimir Klitschko for the WBA (Super), IBF, WBO, IBO, The Ring Magazine, and lineal titles in 2013, suffering his first professional career loss by unanimous decision.

Povetkin fought unified champion Anthony Joshua for the WBA (Super), IBF, WBO, and IBO titles in 2018, and suffered a seventh-round technical knockout loss, his only defeat by stoppage to date.

As of October 2020, Povetkin is ranked as the world’s fourth best active heavyweight by The Ring Magazine and BoxRec, and fifth by the Transnational Boxing Rankings Board, as well as the world’s ninth best active boxer, pound for pound, by BoxRec.

Paul “Paulie” Malignaggi (born November 23, 1980) is an American retired professional boxer who competed from 2001 to 2017. He held world championships in two weight classes, including the IBF junior welterweight title from 2007 to 2008, and the WBA welterweight title from 2012 to 2013. Malignaggi competed once as a bare knuckle boxer in 2019 in a loss to Artem Lobov. Malignaggi was particularly known for his hand speed, boxing ability, athleticism, and durable chin.

Cecilia Carmen Linda Brækhus (born 28 September 1981) is a Norwegian professional boxer and former kickboxer. She is widely regarded as one of the greatest female boxers of all time. In boxing she reigned as the undisputed female welterweight champion from 2014 to 2020, and is the first woman in any weight class to hold the WBA, WBC, IBF and WBO titles simultaneously. She is also one of only eight boxers in history, female or male, to hold all four major world titles simultaneously, along with Bernard Hopkins (2004–2005), Jermain Taylor (2005), Terence Crawford (2017), Oleksandr Usyk (2018–2019), Claressa Shields (2019–2020), Katie Taylor (2019–), and Jessica McCaskill (2020–). In 2016, she captured the IBO title, becoming the first ever boxer to hold five world titles from sanctioning bodies simultaneously.

In 2017, the Boxing Writers Association of America named Brækhus their inaugural Female Fighter of the Year. Guinness World Records awarded her with three recognitions in 2018: the Longest Reigning Female Boxing Champion, the Longest Reign as a Four-Belt Undisputed Boxing Champion, and the Most Bouts Undefeated by a Female World Champion Boxer. As of September 2020, she is ranked as the world’s second best active female welterweight by The Ring and BoxRec, and the third best active female, pound-for-pound, by The Ring, fifth by ESPN, and sixth BoxRec.

Óscar Valdez (born 22 December 1990) is a Mexican professional boxer who is a two-weight world champion who currently holds the WBC super featherweight title since 2021. He previously held the WBO featherweight title from 2016 to 2019. Valdez qualified for the 2008 Olympics at the age of 17 and became the first Mexican Youth World Champion. Four years later, he qualified for the 2012 Summer Olympics. Valdez is known for his aggressive fighting style, punching power and terrific combination punching. He currently boasts a 79% knockout percentage.

Callum Johnson (born 20 August 1985) is a British professional boxer who challenged once for the IBF light-heavyweight title in 2018. At regional level, he held the Commonwealth light-heavyweight title from 2016 to 2018 and the British light-heavyweight title in 2018. As an amateur, he won a gold medal whilst representing Scotland at the 2010 Commonwealth Games in Delhi.

Sugar Ray Robinson (born Walker Smith Jr.; May 3, 1921 – April 12, 1989) was an American professional boxer who competed from 1940 to 1965. He was inducted into the International Boxing Hall of Fame in 1990. He is widely regarded as the greatest boxer of all time.

Robinson was a dominant amateur, but his exact amateur record is not known. It is usually listed as 85–0 with 69 knockouts, 40 in the first round. However it has been reported he lost to Billy Graham and Patsy Pesca as a teenager under his given name, Walker Smith Jr. He turned professional in 1940 at the age of 19 and by 1951 had a professional record of 128–1–2 with 84 knockouts. From 1943 to 1951 Robinson went on a 91-fight unbeaten streak, the third-longest in professional boxing history.

Robinson held the world welterweight title from 1946 to 1951 and won the world middleweight title in the latter year. He retired in 1952, only to come back two-and-a-half years later and regain the middleweight title in 1955. He then became the first boxer in history to win a divisional world championship five times (a feat he accomplished by defeating Carmen Basilio in 1958 to regain the middleweight championship). Robinson was named “fighter of the year” twice: first for his performances in 1942, then nine years and over 90 fights later, for his efforts in 1951. Historian Bert Sugar ranked Robinson as the greatest fighter of all time and in 2002, Robinson was also ranked number one on The Ring magazine’s list of “80 Best Fighters of the Last 80 Years”. As of October 2020, BoxRec ranks Robinson as the fourth greatest pound-for-pound boxer of all time. BoxRec also gave 31 of Robinson’s victorious fights a 5-Star rating.

William Harrison “Jack” Dempsey (June 24, 1895 – May 31, 1983), nicknamed Kid Blackie, and The Manassa Mauler, was an American professional boxer who competed from 1914 to 1927, and reigned as the world heavyweight champion from 1919 to 1926. A cultural icon of the 1920s, Dempsey’s aggressive fighting style and exceptional punching power made him one of the most popular boxers in history. Many of his fights set financial and attendance records, including the first million-dollar gate. He pioneered the live broadcast of sporting events in general, and boxing matches in particular.

Dempsey is ranked tenth on The Ring magazine’s list of all-time heavyweights and seventh among its Top 100 Greatest Punchers, while in 1950 the Associated Press voted him as the greatest fighter of the past 50 years. He is a member of the International Boxing Hall of Fame, and was in the previous Boxing Hall of Fame.

Vitali Klitschko is a former professional boxer. In his career, Klitschko is a three-time world heavyweight champion, the second-longest-reigning WBC heavyweight champion of all time and has the fifth-longest combined world championship reign in history at 2,735 days. He held the WBO title from 1999 to 2000; the Ring magazine title from 2004 to 2005; and the WBC title twice in 2004 and between 2008 and 2013. In 2011, Vitali and his brother Wladimir entered the Guinness World Records book as the pair of brothers with most world heavyweight title fight wins (30 at the time; 40 as of 2020).

Vasyl Lomachenko is a Ukrainian professional boxer. Lomachenko is one of the most successful amateur boxers of all time, possessing a record of 396 wins and 1 loss, with that loss avenged twice. Competing in the featherweight and lightweight divisions, he won a silver medal at the 2007 World Championships, gold at the 2008 European Championships, consecutive gold at the 2008 and 2012 Olympics, and consecutive gold at the 2009 and 2011 World Championships. He is known for his exceptional hand speed, timing, accuracy, creativity, athleticism, defence and footwork.

Since turning pro, he is a former world champion in three weight classes, having held the WBO featherweight title from 2014 to 2015; the WBO junior lightweight title from 2016 to 2017; and the unified WBA (Super), WBC, WBO and Ring magazine lightweight titles between 2018 and October 2020.

Katie Taylor (born 2 July 1986) is an Irish professional boxer and former footballer. She is a two-weight world champion and the current undisputed lightweight champion, having held the WBA title since 2017; the IBF title since 2018; and the WBC, WBO, and Ring magazine titles since 2019, as well as having held the WBO junior-welterweight title in 2019. Following her victory over Delfine Persoon in 2019, she became one of only eight boxers in history (female or male) to hold all four major world titles in boxing—WBA, WBC, IBF, and WBO—simultaneously. Her first victory over Persoon in 2019, also gained her recognition as the inaugural lightweight lineal champion.

Marcos René Maidana (born 17 July 1983) is an Argentine former professional boxer who competed from 2004 to 2014. He was a world champion in two weight classes, having held the WBA (Regular) super lightweight title from 2011 to 2012, and the WBA welterweight title from 2013 to 2014. A versatile brawler in the ring, Maidana was well known for his formidable punching power, and was never stopped in any of his five losses. He famously outbrawled and withstood punishing blows from Floyd Mayweather, Jr. during their first bout, but lost to Mayweather via a highly controversial majority decision.

Marco Antonio Barrera Tapia (born January 17, 1974) is a Mexican former professional boxer who competed from 1989 to 2011. He held multiple world championships in three weight classes, including the WBO junior featherweight title twice between 1995 and 2001, the Ring magazine and lineal featherweight titles between 2001 and 2003, and the unified WBC and IBF super featherweight titles between 2004 and 2007. As an amateur, Barrera had a record of 104–4 and was a five-time Mexican national champion. Before losing his first amateur contest, Barrera had an undefeated record of 56–0.

Barrera is well known for his trilogy with fellow Mexican legend Érik Morales, his duology with Manny Pacquiao, and his rivalry with Naseem Hamed and Juan Manuel Márquez. BoxRec currently ranks him No.89 in its ranking of the greatest pound for pound boxers of all time. ESPN ranked Barrera as number 43 on their list of the 50 greatest boxers of all time. He was inducted into the International Boxing Hall of Fame in 2017.

Franklin Roy Bruno, MBE (born 16 November 1961) is a British former professional boxer who competed from 1982 to 1996.

The pinnacle of Bruno’s boxing career was winning the WBC heavyweight title from Oliver McCall at a packed Wembley Stadium in 1995, in what was his fourth world championship challenge. Bruno faced multiple top-rated heavyweights throughout his career, including two fights against Mike Tyson in 1989 and 1996, and a domestic clash against Lennox Lewis in 1993.

He was also known for his exceptional punching power, scoring 38 knockouts in 40 wins and giving him a 95% knockout-to-win ratio; his overall knockout percentage was 84.44%. Like Henry Cooper before him, Bruno has remained a popular celebrity with the British public following his retirement from boxing.

Xu Can (born March 9, 1994) is a Chinese professional boxer who held the WBA (Regular) featherweight title from 2019 to 2021.

As of March 2021, Xu is rated as the second best active featherweight by ESPN, third by the Transnational Boxing Rankings Board, and fourth by BoxRec.

Marcellus Joseph Johnson (born August 13, 1971), better known as Mark “Too Sharp” Johnson, is an American former professional boxer who competed from 1990 to 2006. He is a three-time world champion in two weight classes, having held the IBF flyweight title from 1996 to 1999; the IBF junior bantamweight title from 1999 to 2000; and the WBO junior bantamweight title from 2003 to 2004.

A fast and skilled southpaw, Johnson reached a peak Ring magazine pound for pound ranking of fifth in 1998, and is the first African-American boxer to win a flyweight world title. In 2012 he was inducted into the International Boxing Hall of Fame.

Sergio Mora (born December 4, 1980) is an American professional boxer. As an amateur, he had a record of 40 wins and 10 losses, losing on points in the quarterfinals of the 1998 national He is a former WBC light middleweight champion and was the first winner of NBC’s The Contender series. Golden Gloves, the semifinals of the 1999 U.S. national championships, and in the challengers’ bracket final of the 2000 U.S. Olympic trials.

Lucian Bute (born February 28, 1980) 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 defences and reaching a peak ranking of number one in the division by The Ring magazine.

Ray Charles Leonard (born May 17, 1956), best known as “Sugar” Ray Leonard, is an American former professional boxer, motivational speaker, and occasional actor. Often regarded as one of the greatest boxers of all time, he competed from 1977 to 1997, winning world titles in five weight divisions; the lineal championship in three weight divisions;  as well as the undisputed welterweight title. Leonard was part of “The Fabulous Four”, a group of boxers who all fought each other throughout the 1980s, consisting of Leonard, Roberto Durán, Thomas Hearns, and Marvin Hagler.

“The Fabulous Four” created a wave of popularity in the lower weight classes that kept boxing relevant in the post–Muhammad Ali era, during which Leonard defeated future fellow International Boxing Hall of Fame inductees Hearns, Durán, Hagler, and Wilfred Benítez. Leonard was also the first boxer to earn more than $100 million in purses, and was named “Boxer of the Decade” in the 1980s. The Ring magazine named him Fighter of the Year in 1979 and 1981, while the Boxing Writers Association of America (BWAA) named him Fighter of the Year in 1976, 1979, and 1981. In 2002, Leonard was voted by The Ring as the ninth greatest fighter of the last 80 years; BoxRec ranks him as the 23rd greatest boxer of all time, pound for pound.

Riddick Lamont Bowe (born August 10, 1967) is a retired American professional boxer who competed between 1989 and 2008. He reigned as the undisputed world heavyweight champion in 1992, and as an amateur he won a silver medal in the super heavyweight division at the 1988 Summer Olympics.

After turning professional in 1989, Bowe went on to become a two-time world heavyweight champion. In 1992 he won the undisputed WBA, WBC and IBF titles by defeating then-unbeaten former undisputed heavyweight champion Evander Holyfield. That same year, Bowe was named Fighter of the Year by The Ring and the Boxing Writers’ Association of America.

Julio César Chávez González is a Mexican former professional boxer who competed from 1980 to 2005. A multiple-time world champion in three weight divisions, Chávez was listed by The Ring magazine as the world’s best boxer, pound for pound, from 1990 to 1993 During his career he held the WBC super featherweight title from 1984 to 1987, the WBA and WBC lightweight titles between 1987 and 1989, the WBC light welterweight title twice between 1989 and 1996, and the IBF light welterweight title from 1990 to 1991. He also held the Ring magazine and lineal lightweight titles from 1988 to 1989, and the lineal light welterweight title twice between 1990 and 1996. Chávez was named Fighter of the Year for 1987 and 1990 by the Boxing Writers Association of America and The Ring, respectively.

Timothy Ray Bradley Jr. (born August 29, 1983) is an American former professional boxer who competed from 2004 to 2016. He held multiple world championships in two weight classes, including the WBC light welterweight title twice between 2008 and 2011, the WBO light welterweight title from 2009 to 2012, and the WBO welterweight title twice between 2012 and 2016.

In October 2013, Bradley was ranked as the world’s third best active boxer, pound for pound, by The Ring magazine. He is particularly known for his trilogy of fights against Manny Pacquiao, whom he fought in 2012, 2014, and 2016.

Amir Iqbal Khan (born 8 December 1986) is a British professional boxer, promoter and philanthropist. As an amateur, Khan won a silver medal in the lightweight division at the 2004 Olympics, becoming at the age of 17, Britain’s youngest boxing Olympic medalist. He is also one of the youngest ever British professional world champions, winning the WBA title at the age of 22. In 2007, he was named ESPN prospect of the year.

As a pro, he is a former unified light-welterweight world champion, having held the WBA (later Super) title from 2009 to 2012, and the IBF title in 2011. At regional level, he held the Commonwealth lightweight title from 2007 to 2008. He also held the WBC Silver welterweight title from 2014 to 2016, and once challenged for the WBC and Ring magazine middleweight titles in 2016.

Vinny Paz (born Vincenzo Edward Pazienza, December 16, 1962), formerly Vinny Pazienza, is an American former professional boxer who held world titles at lightweight and light middleweight. The 2016 film Bleed for This is based on his comeback from a spinal injury. In 1991, Pazienza moved into the junior middleweight division and won the USBA championship against Ron Amundsen in a 12-round decision, becoming the second fighter in boxing history to win both the lightweight and junior middleweight world championships.

Pazienza was forced to relinquish the title due to a serious car accident in which his neck was broken. He was scheduled for a Jan.10 title defense against PAT LAWLOR in Atlantic City but it was called off. Doctors informed him he might never walk again and would certainly never fight again. Pazienza had to wear a medical device called a Halo, a circular metal brace screwed into the skull in four spots and propped up with four metal rods. He had the Halo screwed to his skull for three months, during which time he maintained a workout regimen against doctors orders. He returned to the ring thirteen months after the accident and defeated future WBC world jr. middleweight champion Luis Santana by a 10-round decision.

Román Alberto González Luna (born 16 June 1987), best known by his nickname “Chocolatito”, is a Nicaraguan professional boxer. He is the first boxer from Nicaragua to win world titles in four weight classes, having surpassed his mentor and former three-weight world champion, the late Alexis Argüello. González is also the first boxer in history to win world titles in all four of the lowest weight classes: minimumweight, light flyweight, flyweight, and super flyweight. González was reportedly undefeated as an amateur, amassing an 88–0 record in official amateur bouts. The highlight of his amateur career was winning the light flyweight gold medal at the 2004 Central American Championships.

He has held the WBA super flyweight title since 2020. He also held the WBA minimumweight title from 2008 to 2010; the WBA light flyweight title from 2011 to 2013; the WBC, Ring magazine, and lineal flyweight titles from 2014 to 2016; and the WBC super flyweight title from 2016 to 2017. As of October 2019, he is ranked as the world’s seventh best active super flyweight by The Ring magazine. From September 2015 to March 2017, he was also ranked by The Ring as the world’s best active boxer, pound for pound. He is known particularly for his aggressive pressure fighting style.

Daniel Jacobs (born February 3, 1987) is an American professional boxer. He is a two-time middleweight world champion, having held the IBF title from 2018 to 2019 and the WBA (Regular) title from 2014 to 2017. Nicknamed the “Miracle Man,” Jacobs’ career was almost cut short in 2011 due to osteosarcoma, a rare form of bone cancer. He went on to make a full recovery after spending 19 months out of the sport, meanwhile recovering from severe operation-induced injuries generally perceived as crippling. As an amateur boxer, Jacobs recorded 137 wins and 7 losses whilst capturing Gold in 2 Golden Gloves *1 in the US National Championships.

As of August 2018, Jacobs is ranked as the world’s third best active middleweight by The Ring magazine, the Transnational Boxing Rankings Board and BoxRec. He is particularly known for his exceptional punching power, with an 82.8% knockout-to-win ratio, and is stylistically considered an all-around fighter with good movement and hand speed.

Regis Prograis (born January 24, 1989) is an American professional boxer. He held the WBA light welterweight title in 2019 and the WBC interim light welterweight title in 2018. As an amateur, Prograis was ranked #4 in the United States, the 2009 Ringside World Champion, 2010 HORN National Champion, won regional Golden Gloves and competed in the 2012 Olympic Trials before turning professional in 2012. As of February 2021, he is ranked as the world’s third best active light welterweight by the Transnational Boxing Rankings Board, second best by The Ring magazine and fourth best by BoxRec. Prograis currently has an 83.3% knockout-to-win ratio.

Vergil Ortiz Jr. (born March 25, 1998) is an American professional boxer of Mexican descent. As an amateur, he was a seven-time national champion and was the winner at the 2013 Junior Olympics. He was named 2019 The Ring magazine Prospect of the Year.

Viddal Riley (born 7 July 1997) is a British professional boxer, YouTuber, rapper and internet personality. He is notable as being the boxing trainer and associate of YouTube personality KSI.

Riley represented England at the EUBC European Junior Boxing Championships in Anapa, Russia in 2013, winning a silver medal. He currently holds an undefeated professional boxing record.

Joseph William Frazier (January 12, 1944 – November 7, 2011), nicknamed “Smokin’ Joe”, was an American professional boxer who competed from 1965 to 1981. Frazier was known for his strength, durability, formidable punching power, and relentless pressure fighting style. He was also the first boxer to beat Muhammad Ali. He reigned as the undisputed heavyweight champion from 1970 to 1973, and as an amateur won a gold medal at the 1964 Summer Olympics.

The Ring Magazine named him Fighter of the Year in 1967, 1970 and 1971, while the Boxing Writers Association of America (BWAA) named him Fighter of the Year in 1969, 1971 and 1975. In 1999, The Ring Magazine ranked him the eighth greatest heavyweight. BoxRec ranks him as the 18th greatest heavyweight of all time. He is an inductee of both the International Boxing Hall of Fame and the World Boxing Hall of Fame.

His best-known punch was a powerful left hook, which accounted for most of his knockouts. In his career, he lost to only two fighters, both former Olympic and world heavyweight champions: twice to Muhammad Ali, and twice to George Foreman.

Larry Holmes (born November 3, 1949) is an American former professional boxer who competed from 1973 to 2002. He grew up in Easton, Pennsylvania, which led to his boxing nickname of the Easton Assassin.

Holmes, whose left jab is rated among the best in boxing history, held the WBC heavyweight title from 1978 to 1983, The Ring magazine and lineal heavyweight titles from 1980 to 1985, and the inaugural IBF heavyweight title from 1983 to 1985. During his only title reign, he defended his title against 19 fighters, the second most in history behind Joe Louis and the most since the international expansion of boxing governing bodies. Holmes is the only fighter to have stopped Muhammad Ali and the only man still alive to have beaten Ali.

Santos Saúl “Canelo” Álvarez Barragán is a Mexican professional boxer. He has won multiple world championships in four weight classes from light middleweight to light heavyweight, including unified titles in three of those weight classes. Álvarez is currently a unified super middleweight world champion, having held the WBA (Super), WBC, and Ring magazine titles since 2020, and the WBO title since May 2021.

Álvarez is known as an excellent counterpuncher, being able to exploit openings in his opponents’ guards while avoiding punches with head and body movement. He is also known as a formidable body puncher. As of June 2021, Álvarez is ranked as the world’s best active boxer, pound for pound, by BoxRec, The Ring, the Boxing Writers Association of America, the TBRB, and ESPN.

Juan Manuel Márquez Méndez (born August 23, 1973) is a Mexican former professional boxer who competed from 1993 to 2014. He is the third Mexican boxer (after Érik Morales and Jorge Arce) to become a world champion in four weight classes, having held nine world championships including the WBA (Super), IBF and WBO featherweight titles between 2003 and 2007; the WBC super featherweight title from 2007 to 2008; the WBA (Super), WBO, Ring magazine and lineal lightweight titles between 2008 and 2012; and the WBO junior welterweight title from 2012 to 2013.

In a career that spanned over twenty years, Márquez was known for being a fast and highly technical boxer who was exceptionally skilled at combinations and counterpunches, yet also willing to engage in slugfests with opponents. He was also credited for his toughness, and never lost a fight by stoppage. His most notable bouts include his four-fight saga with Manny Pacquiao and his fight against fellow Mexican Marco Antonio Barrera. Márquez is considered to be one of the greatest boxers of all time, and is ranked by BoxRec as the eleventh greatest fighter of all time and the greatest Mexican fighter of all time, pound for pound.

Arturo Gatti (April 15, 1972 – July 11, 2009) was an Italian–Canadian professional boxer who competed from 1991 to 2007. A world champion in two weight classes, Gatti held the IBF junior lightweight title from 1995 to 1998, and the WBC super lightweight title from 2004 to 2005. He also participated in The Ring Magazine’s Fight of the Year a total of four times (1997, 1998, 2002, and 2003).

He announced his retirement on July 14, 2007. After his death in 2009, Gatti was inducted into the International Boxing Hall of Fame on December 10 2012 in his first year of eligibility, becoming the tenth Canadian boxer to be so inducted.

Seniesa Carmen Estrada (born June 26, 1992) is an American professional boxer hailing from East Los Angeles, she is of Mexican descent and started boxing at the age of eight who has held the WBA minimumweight title since March 2021. She previously held the WBC Silver light flyweight title from 2018 until 2021 and the WBA interim flyweight title from 2019 to 2020. As of September 2020, she is ranked as the world’s fifth best active female light flyweight by The Ring and ninth by BoxRec. On July 24, 2020 Estrada scored the fastest knockout in women’s boxing history, knocking out 42 year old Miranda Adkins in 7 seconds.

Jessica McCaskill (born September 8, 1984) is an American professional boxer. She is a two-weight world champion, having held the undisputed, and IBO female welterweight titles since 2020; the WBC female super lightweight title from 2018 to 2020; and the WBA female super lightweight title from 2019 to 2020. She also challenged for the WBA lightweight title in 2017. As of September 2020, she is ranked as the world’s best active female welterweight by Lineal Boxing Champion,The Ring and BoxRec, and the third best active female, pound for pound, by Lineal Boxing Champion,  BoxRec, and fourth by The Ring and ESPN. McCaskill is one of only two women in the modern, post-Olympic era of women’s boxing (along with Claressa Shields), to win lineal championships in two weight classes.

Nigel Gregory Benn (born 22 January 1964) is a British former professional boxer who competed from 1987 to 1996. He held world championships in two weight classes, including the WBO middleweight title in 1990, and the WBC super-middleweight title from 1992 to 1996. Regionally he held the Commonwealth middleweight title from 1988 to 1989. Nicknamed “The Dark Destroyer” for his formidable punching power and aggressive fighting style, he retired with an 83.3% knockout-to-win ratio.

Lawrence Okolie (born 16 December 1992) is a British rapper, author and professional boxer who has held the WBO cruiserweight title since March 2021. At regional level, he held the Commonwealth cruiserweight title from 2018 to 2019, and the British and European cruiserweight titles separately in 2019. Okolie is known for his long reach, accurate jab and punching power. As of October 2020, he is ranked as the world’s seventh best active cruiserweight by The Ring magazine and ninth by BoxRec.

Alicia Napoleon Espinosa (born January 26, 1986) is an American professional boxer who held the WBA female super middleweight title from 2018 to January 2020. As of September 2020, she is ranked as the world’s third best active female super middleweight by The Ring and BoxRec. In 2015 she co-founded and became co-owner and trainer of Overthrow Boxing Club based underground in Manhattan. She was a judge at the Long Island Fight for Charity Event – America’s only charity boxing event completely run by volunteers. In 2018 Napoleon made history when she fought (and beat) Hannah Rankin at the NYCB Live’s Nassau Coliseum. This was the first time a women’s boxing match had taken place at the arena. On December 9, 2018, Napoleon Ring 8 honored her as the New York State Female Fighter of the Year at their annual Holiday Awards Ceremony.

Christopher Mark Algieri (born March 2, 1984) is an American professional boxer and former kickboxer. In boxing he held the WBO junior welterweight title in 2014 and challenged for the WBO welterweight title later that year; in kickboxing he was an undefeated ISKA World welterweight and WKA World super welterweight champion. Outside of boxing, Algieri works as a nutritionist.

Rocco Francis Marchegiano (September 1, 1923 – August 31, 1969) was an American professional boxer who competed from 1947 to 1955 and held the world heavyweight title from 1952 to 1956. He is the only heavyweight champion to have finished his career undefeated. His six title defences were against Jersey Joe Walcott (from whom he had taken the title), Roland La Starza, Ezzard Charles (twice), Don Cockell and Archie Moore.

Known for his relentless fighting style, formidable punching power, stamina, and exceptionally durable chin, Marciano has been included by boxing historians in lists of the greatest boxers of all time and is currently ranked by BoxRec as the 21st greatest pound-for-pound boxer in history. Five of his victorious fights received a 5-Star rating from BoxRec. Marciano remains the only fighter to have stopped every opponent he’s ever faced for the world heavyweight title, and holds the highest knockout-to-win ratio in world heavyweight title fights at 85.7%. His career knockout-to-win percentage of 87.8% remains one of the highest in heavyweight boxing history.

John Arthur Johnson (March 31, 1878 – June 10, 1946), nicknamed the “Galveston Giant”, was an American boxer who, at the height of the Jim Crow era, became the first African American world heavyweight boxing champion (1908–1915). Widely regarded as one of the most influential boxers of all time, one of the period’s most dominant champions, and as a boxing legend, his 1910 fight against James J. Jeffries was dubbed the “fight of the century”. According to filmmaker Ken Burns, “for more than thirteen years, Jack Johnson was the most famous and the most notorious African-American on Earth”. Transcending boxing, he became part of the culture and history of racism in the United States. international Boxing Hall of Fame in 1991.

Tyson Fury is a British professional boxer. He is a two-time world heavyweight champion, having held the WBC and The Ring magazine titles since defeating Deontay Wilder in 2020; previously he held the unified WBA (Super), IBF, WBO, IBO, and The Ring 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, and is widely considered by media outlets to be the lineal heavyweight champion. 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.

Badr Hari (born 8 December 1984) is a Moroccan-Dutch kickboxer from Amsterdam, fighting out of Morocco. He is a former K-1 Heavyweight champion (2007–2008), It’s Showtime Heavyweight world champion (2009–2010), and a K-1 World Grand Prix 2008 and 2009 finalist. Nicknamed The Golden Boy, he is regarded as one of the greatest professional kickboxers of all time with an incredible record of 122 fights and 106 wins.

Hari was officially praised by the King of Morocco, Mohammed VI, in 2009, for his accomplishments in the sport.

Sergey Kovalev (born 2 April 1983) is a Russian professional boxer. He has held multiple light heavyweight world championships, including the WBA (Super) and IBF titles from 2014 to 2016, and the WBO title three times between 2013 and 2019. As of November 2019, Kovalev is ranked as the world’s second best active light heavyweight by The Ring magazine, third by BoxRec and fourth by the Transnational Boxing Rankings Board. In 2014, The Ring named him their Fighter of the Year. Nicknamed the “Krusher”, Kovalev is particularly known for his exceptional punching power, although he designates himself as “just a regular boxer.”

Cristiane Justino Venâncio (born July 9, 1985), known professionally by her ring name Cris Cyborg (and formerly by her married name Cristiane Santos), is a Brazilian–American mixed martial artist who as of January 2021 competes in Bellator MMA, where she is the Bellator Women’s Featherweight Champion, having held the title since January 2020.  She is also a former UFC, Strikeforce and Invicta FC World Featherweight Champion. She is the only MMA fighter in history, male or female, to become a Grand Slam Champion, holding world championships across four major mixed martial arts promotions. Cyborg is widely regarded as one of the greatest female mixed martial artists of all time. Cyborg first rose to prominence when she won the Strikeforce title on August 15, 2009, by defeating Gina Carano via first-round technical knock-out (TKO). As of March 29, 2021, she is #1 in the Bellator Women’s pound-for-pound Rankings.

George Michael Ward Jr. (born October 4, 1965), often known by his nickname of “Irish” Micky Ward, is an American former professional boxer who competed from 1985 to 2003.

Ward was a three-time New England Golden Gloves champion boxer who turned pro in 1985, winning his first fourteen fights. However, his career levelled off, and after losing four consecutive fights in 1990/91, Ward took a hiatus from boxing. Ward was successful in his return, winning his first nine fights. He challenged once for the IBF light welterweight title in 1997, and held the WBU light welterweight title in 2000. Ward is widely known for his trilogy of fights with Arturo Gatti, two of which received Fight of the Year awards by The Ring Magazine, as well as his relentless pressure fighting style. Ward was portrayed by Mark Wahlberg in the 2010 film The Fighter, which was based on his early career.

Shawn Porter (born October 20, 1987) is an American professional boxer. He is a former two-time welterweight world champion, having held the IBF title from 2013 to 2014 and the WBC title from 2018 to September 2019. As an amateur, Porter competed mostly as a middleweight and compiled an astounding amateur record of 276–14. In 2007 he won the World Golden Gloves Championship. Though he boasts amateur victories over current pro prospects Daniel Jacobs, Demetrius Andrade, Edwin Rodriguez, Shawn Estrada, Jonathan Nelson, and Oleksandr Usyk he came up just short in qualifying for the 2008 U.S. Olympics team. As of December 2020, he is ranked as the world’s sixth best active welterweight by BoxRec, fourth by the Transnational Boxing Rankings Board and fifth by The Ring magazine. He is particularly known for his aggressive pressure fighting style, physical strength and high work rate.

Jorge Linares (born 22 August 1985) is a Venezuelan professional boxer. Linares compiled an 89-5 record as an amateur, winning several national junior championships in Venezuela. At the age of 17, Linares moved to Japan at the suggestion of his countryman, WBA president Gilberto Mendoza. Linares wanted to turn pro as soon as possible, and he would’ve had to wait until he turned 18 in Venezuela. As a pro, he has held multiple world championships in three weight classes, including the WBC featherweight title from 2007 to 2008; the WBA super featherweight title from 2008 to 2009; and the WBA, WBC and Ring magazine lightweight titles between 2014 and 2018.

Franchón Crews-Dezurn (born June 13, 1987) is an American professional boxer. She is a current unified super middleweight world champion, having held the WBO female title since March 2020 and previously from 2019 to January 2020; and the WBC female title since June 2020 and previously from 2018 to January 2020. As of September 2020, she is ranked as the world’s second best active female super middleweight by The Ring and BoxRec.

Chantelle Cameron (born 14 May 1991) is a British professional boxer. She is a two-weight world champion, having held the WBC female light-welterweight title since 2020 and the IBO female lightweight title from 2017 to 2019. As an amateur, she won a silver medal in the light-welterweight division at the 2010 EU Championships in Keszthely, Hungary, and a bronze in the lightweight division at the 2011 EU Championships in Katowice, Poland, losing to Ireland’s Katie Taylor in the semi-finals. As of October 2020, she is ranked as the world’s best active female light-welterweight by BoxRec and third best active female lightweight and light-welterweight by The Ring.

Joseph Louis Barrow (May 13, 1914 – April 12, 1981) was an American professional boxer who competed from 1934 to 1951. Nicknamed the Brown Bomber, Louis is widely regarded as one of the greatest and most influential boxers of all time. He reigned as the world heavyweight champion from 1937 to 1949, during which he participated in 27 championship fights. The 27th fight, against Ezzard Charles in 1950, was a challenge for Charles’ heavyweight title and so is not included in Louis’ reign. He was victorious in 25 consecutive title defences. In 2005, Louis was ranked as the best heavyweight of all time by the International Boxing Research Organization, and was ranked number one on The Ring magazine’s list of the “100 greatest punchers of all time”. Louis had the longest single reign as champion of any heavyweight boxer in history. He has been ranked as the world’s best heavyweight by BoxRec 11 times (the second most in history, only behind Muhammad Ali) and has been placed within ten best 15 times. Six of his victorious fights were rated 5-Star by BoxRec.

Louis’ cultural impact was felt well outside the ring. He is widely regarded as the first person of African-American descent to achieve the status of a nationwide hero within the United States, and was also a focal point of anti-Nazi sentiment leading up to and during World War II because of his historic rematch with German Boxer Max Schmeling in 1938. He was instrumental in integrating the game of golf, breaking the sport’s colour barrier in America by appearing under a sponsor’s exemption in a PGA event in 1952.

Giacobbe “Jake” LaMotta (July 10, 1922 – September 19, 2017) was an American professional boxer, world middleweight champion, and stand-up comedian. Nicknamed “The Bronx Bull” or “Raging Bull”, LaMotta was a rough fighter who was not a particularly big puncher, but he would subject his opponents to vicious beatings in the ring. With use of constant stalking, brawling and inside fighting, he developed the reputation for being a “bully”; he was what is often referred to today as a swarmer and a slugger.

Oleksandr Oleksandrovych Usyk (born 17 January 1987) is a Ukrainian professional boxer. He is a world champion in two weight classes, having held the unified WBA (Super), IBF, WBO and IBO heavyweight titles since defeating Anthony Joshua in September 2021; and the undisputed cruiserweight title from 2018 to 2019, being the first cruiserweight champion to hold all four major world titles. With his victory over Joshua, Usyk became one of only three boxers to have unified the cruiserweight world titles and become a world heavyweight champion, joining Evander Holyfield and David Haye.

Terence “Bud” Crawford (born September 28, 1987) is an American professional boxer. Crawford took up boxing at the age of seven. He fought 70 official amateur bouts, losing only 12 times. As an amateur, he defeated future world champions Mikey Garcia and Danny García. After winning three amateur tournaments shortly before the 2008 Olympics, he became the highest-ranked lightweight in the US.

As a pro, He has held multiple world championships in three weight classes, including the WBO welterweight title since 2018. Previously he held the WBO, Ring magazine and lineal lightweight titles from 2014 to 2015; and the unified WBA (Super), WBC, IBF, WBO, Ring and lineal light welterweight titles between 2015 and 2017. Stylistically, Crawford is known for his exceptionally fast hand speed, ring IQ, punching power, counter-punching abilities and defensive skills, as well as his ability to comfortably switch hit from orthodox to southpaw.

Cédric Doumbé is a Cameroonian-French kickboxer. He competes in the welterweight division and is the current Glory welterweight champion. Doumbé is a former contestant on the first season of the French version of The Circle. As of 1 August 2020, he is ranked the #1 welterweight in the world by Combat Press. He has been continually ranked in the welterweight top ten since April 2016. In 2016 Combat Press voted him the Fighter of the Year, while LiverKick.com also voted him the Fighter of the Year.

Josh Taylor (born 2 January 1991) is a Scottish professional boxer. He is a unified light-welterweight champion, having held the WBA (Super), IBF and The Ring Magazine titles since 2019.

At regional level, he held the Commonwealth light-welterweight title from 2016 to 2017. As an amateur, he won a silver medal at the 2010 Commonwealth Games and gold at the 2014 edition.

As of May 2020, he is ranked as the world’s best active light-welterweight by BoxRec and the Transnational Boxing Rankings Board. With 12 of his 16 wins coming by way of stoppage, he currently has a 75% knockout-to-win percentage.

Caleb Hunter Plant is an American professional boxer who has held the IBF super middleweight title since 2019. As an amateur, Caleb Plant took up boxing at the age of 8. He won the 2011 Golden Gloves in the light heavyweight division. Plant was an alternate for the 2012 Summer Olympics. As an amateur Caleb won numerous tournament titles while compiling a record of 97 wins with only 20 defeats. He would get a shot at a world title as a professional came in his 18th fight when he fought Venezuelan boxer José Uzcátegui. In the fight, he knocked Uzcátegui down twice en-route to a unanimous decision win.

Érik Isaac Morales Elvira (born September 1, 1976) 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.

Morales defeated fifteen world champions during the course of his career, and is famous for his trilogies with fellow Mexican legend Marco Antonio Barrera, as well as Manny Pacquiao. ESPN ranked Morales at number 49 on their list of the 50 greatest boxers of all time. Morales was inducted into the International Boxing Hall of Fame in June of 2018.

Joel Díaz (born February 18, 1973 in Jiquilpan, Michoacán, Mexico) is a Mexican-American retired professional boxer, who fought in the lightweight division. He is the brother of Antonio Díaz and former-World Champion Julio Díaz.

Nonito Gonzales Donaire Jr. (born November 16, 1982) is a Filipino professional boxer. He has held multiple world championships in four weight classes, including the IBF flyweight title from 2007 to 2009; the unified WBC and WBO bantamweight titles in 2011; the IBF super bantamweight title in 2012; the WBO super bantamweight title twice between 2012 and 2016; the WBA (Super) featherweight title in 2014; and the WBA (Super) bantamweight title from 2018 to 2019.

In total, Donaire has held eight world titles by the main four boxing sanctioning bodies, as well as the IBO flyweight title from 2007 to 2009, the WBA interim super flyweight title from 2009 to 2010, and The Ring magazine and lineal super bantamweight titles from 2012 to 2013. As of March 2019, Donaire is ranked as the world’s third best active bantamweight by The Ring, and BoxRec, and fourth by the Transnational Boxing Rankings Board.

Donaire is popularly known as “The Filipino Flash” due to his exceptionally fast hand speed and formidable punching power and is a two-time winner of The Ring’s Knockout of the Year award, in 2007 and 2011. He reached a peak pound for pound ranking of third by The Ring in 2011 and was named Fighter of the Year in 2012 by the Boxing Writers Association of America. Donaire is one of the few Asian boxers to win world titles in at least four weight classes, along with fellow Filipinos Manny Pacquiao and Donnie Nietes.

Conor Nigel Benn (born 28 September 1996) is a British professional boxer. He is the son of former world champion boxer Nigel Benn.

Benn made his professional debut in April 2016 aged 19 at The O2 Arena in London defeating Bulgarian Ivailo Boyanov by technical knockout in the first round.

His biggest test came on November 21, 2020. Benn defeated Sebastian Formella (a former IBO welterweight world champion) by unanimous decision at the SSE Arena in Wembley, London. Benn was able to dominate the veteran over the course of 10 rounds. The three judges scored the bout 99-92, 99-91, and 100-91 for Benn. It was the second time in his professional career that Benn’s fight went the ten round distance.