Roger Mayweather (born April 24, 1961) is a retired professional boxer. He won two major world titles in two different weight classes. Throughout his career, Mayweather fought against many other boxing champions of the 1980s and 1990s. He is a part of the Mayweather boxing family; his brothers are former welterweight contender Floyd Mayweather Sr. and former IBO super featherweight champion Jeff Mayweather, and his nephew is five-division world champion Floyd Mayweather Jr. Roger eventually became Mayweather Jr.'s trainer.

Mayweather who was 64-4 as an amateur made his pro boxing debut on July 29, 1981 against Andrew Ruiz. Mayweather won by TKO in round 1. In his thirteenth fight, Mayweather beat Ruben Muñoz Jr. for the USBA lightweight (135 lb) title.

After improving his record to 14-0, Mayweather earned a titleshot on January 19, 1983 against WBA super featherweight (130 lb) champion Samuel Serrano. Serrano entered the bout with a record of 49-3-1 and had lost only once since first winning the title in 1976. Nonetheless, Mayweather led on all three judges' scorecards before he beat Serrano by TKO in round 8 and effectively ended Serrano's career.

Adrien Broner (Born 28 July 1989) is an American Professional boxer, based in Cincinnati, Ohio, United States. Adrien has been featured in the top ten of the Ring Magazine rankings for the Junior Lightweight division.

Broner had a successful amateur career of over 300 fights

Broner turned professional on 31 May 2008 and scored three consecutive first round knockouts against Allante Davis, David Warren Huffman and Ramon Flores. In Broner's fourth fight he faced Terrance Jett at the MGM Grand in Las Vegas on the undercard of the Ricky Hatton vs Paulie Malignaggi fight. Broner defeated Jett with a stoppage in the sixth round. In Broner's fifth professional fight and final of 2008, he faced Scott Furney on the undercard of Oscar De La Hoya vs Manny Pacquiao fight. Broner stopped Furney in the first round bringing his record to 5(5)-0-0.

In January 2009 he was forced to go the distance with Jose Alfredo Lugo, at the Staples Center on the undercard of Shane Mosley vs Antonio Margarito. Broner returned to the ring in March scoring a unanimous decision over Eric Ricker. Three weeks later Broner stopped Angel Rodriguez in the fourth round. In his eighth fight Broner stepped up to eight rounds in a hard fought fight with Fernando Quintero, pulling out a majority decision. In June at the Staples Center Broner met Australian William Kickett, scoring a sixth round knockout. On the Juan Díaz vs Paul Malignaggi undercard in Houston Broner make short work of Edgar Portillo, victory coming via stoppage in the first round. Broner defeated Henry White Jr via KO in September and finished his busy year against Tommy Atencio. Broner stopped Atencio in the first round, for the sixth time in thirteen fights. Broner then had a fourth round stoppage victory over Roberto Acevedo. Broner fought 4 more times in 2010 against Rafael Lora, Carlos Claudio, Guillermo Sanchez, and Ilido Julio, stopping all of them.

Michael Gerard "Mike" Tyson (born June 30, 1966) is a retired American professional boxer. Tyson is a former undisputed heavyweight champion of the world and holds the record as the youngest boxer to win the WBC, WBA and IBF heavyweight titles at 20 years, 4 months and 22 days old. Tyson won his first 19 professional bouts by knockout, with 12 of them occurring in the first round. He won the WBC title in 1986 after defeating Trevor Berbick by a TKO in the second round. In 1987, Tyson added the WBA and IBF titles after defeating James Smith and Tony Tucker. He was the first heavyweight boxer to simultaneously hold the WBA, WBC and IBF titles, and the only heavyweight to individually unify them.

In 1988, Tyson became the lineal champion when he knocked out Michael Spinks in the first 91 seconds of the fight. Tyson successfully defended the world heavyweight championship nine times, including victories over Larry Holmes and Frank Bruno. Tyson lost his titles to 42-to-1 underdog James "Buster" Douglas on February 11, 1990, in Tokyo, Japan, by a knockout in round 10. Tyson continued in his quest to regain the titles, defeating Donovan Ruddock twice in 1991. Tyson was then scheduled to take on the undisputed heavyweight champion Evander Holyfield but pulled out due to injury.

Sugar Ray Leonard (born May 17, 1956) is an American retired professional boxer and occasional actor. He was named Ray Charles Leonard, after his mother's favorite singer, Ray Charles. Leonard was the first boxer to earn more than $100 million in purses, won world titles in five weight divisions and defeated future fellow International Boxing Hall of Fame inductees Wilfred Benítez, Thomas Hearns, Roberto Durán and Marvin Hagler. Leonard was named "Boxer of the Decade" for the 1980s.

Leonard, the fifth of seven children, was born in Rocky Mount, North Carolina to Cicero and Getha Leonard. He grew up in Wilmington, N.C. When he was three, the family moved to Washington, D.C. When he was ten, they settled permanently in Palmer Park, Maryland. His father worked as a supermarket night manager, his mother was a nurse.

Leonard was a shy child, and aside from the time he nearly drowned in a creek during a Seat Pleasant flood, his childhood was uneventful. He stayed home a lot, reading comic books and playing with his dog. "He never did talk too much," his mother said. "We never could tell what he was thinking. But I never had any problems with him. I never had to go to school once because of him."

Konstantin Borisovich "Kostya" Tszyu (/ˈkɒstə ˈzuː/; Russian: Константин (Костя) Борисович Цзю; born 19 September 1969) is a semi-retired Russian-Australian professional boxer of mixed Russian, Korean and Mongol descent. He holds both Russian and Australian citizenship and is a four-time world Light Welterweight Champion, including a period of time as the Undisputed Light Welterweight Champion.

Tszyu was the first champion to unify the light welterweight division in over 30 years. He is considered by many in Australia to be a national sports hero. On 7 December 2010, he was inducted in the prestigious International Boxing Hall of Fame for the Class of 2011.

As the son of his Korean (paternal) and Mongol (maternal) descent father, a fitter in a metal factory, and his Russian mother, a nurse, Tszyu was born in Serov, a town near the Ural Mountains, in the former Soviet Union.

Hyperactive as a child, his father decided to take him to a boxing gym, where he would channel that energy by fighting older boys.^{[citation needed]} He impressed Russia's amateur team coaches and he was sent to the Soviet Union's amateur boxing travelling training camps, where he was able to visit more than 30 countries while training and fighting in tournaments. He trained with that group 250 days a year, and won various tournaments, such as amateur boxing's world championships. He also participated in the 1988 Olympic Games. At the Cuban world championship tournament in 1987, he came in second place, and at the Seoul Olympic games, he lost in the third round.