James Nathanial Toney (born August 24, 1968) is an American professional boxer who has held world titles in the middleweight, super middleweight, and cruiserweight divisions. He grew up in Ann Arbor, Michigan and graduated from Huron High School. Toney currently fights in the heavyweight division in boxing and also now competes in mixed martial arts.

Toney's amateur boxing record is 33 fights, 31 wins and 2 losses with 29 KOs. He won the 1983 and 1984 West Michigan Division Junior Title (156 lb), 1987 Novice Golden Gloves in Manchester (156 lb), 1987 Michigan Silver Gloves (156 lb) and 1988 Ohio State Fair (156 lb)

Toney had his first professional fight on October 26, 1988, beating Stephen Lee by a technical knockout in the second round. He was scouted and trained by Gregory Owens as a teenager, who also was his trainer through the mid-nineties. His moniker of "Lights Out" was also given by either Gregory or his son.

On March 10, 1989, his manager Johnny "Ace" Smith was killed outside of the Page One Bar in Detroit. Jackie Kallen then became his manager. He won the Michigan Middleweight title in 1990, knocking out Philip Morefield in the 1st round.

Mike McCallum (born 7 December 1956 in Kingston, Jamaica) is a retired boxer. Nicknamed "The Body Snatcher" for his fierce body punching. McCallum won world titles in three weight classes.

Claimed an amateur record of 240-10

Mike McCallum turned professional in 1981. As a professional, he fought almost exclusively in the USA. He first became a world champion in 1984 by defeating Sean Mannion to win the vacant WBA light middleweight title. McCallum would defend that title six times, winning all six fights by knock out.

His first prominent opponent was future world champion and Hall of Fame inductee Julian Jackson, who McCallum fought in his third title defense. McCallum survived some punishment in the first round and came back to stop the undefeated Jackson in the second round.

McCallum really came to prominence when he knocked out former WBC welterweight title holder Milton McCrory and former Undisputed welterweight champion Donald Curry in 1987. Curry was ahead on all three scorecards going into the fifth round when McCallum knocked him out with what some have called a "perfect" left hook.

Michael John Nunn (born April 14, 1963 in Davenport, Iowa) is a former American boxer. Nicknamed "Second to Nunn," he was a 6' 2" southpaw with great speed. Nunn was the IBF middleweight champion and the WBA super middleweight champion. In 2004, he was sentenced to 24 years in prison for drug trafficking.

Nunn, known as "2nd To Nunn," won three Iowa Golden Gloves titles and posted an amateur record of 168-8.

At the 1984 Olympic trials, U.S. boxing officials asked Nunn, who was boxing as a 156-pounder, to move up to the 165-pound division. They wanted to clear the way for Frank Tate, the eventual Olympic gold medalist, who was being heralded as America's next great middleweight. Tate's last loss was to Nunn.

After agreeing to move up in weight, Nunn boxed Virgil Hill at the Olympic trials in Fort Worth, Texas. Hill defeated Nunn by a 4-1 decision. Nunn and Hill boxed again at the Olympic box-offs in Las Vegas, Nevada. Nunn won the first box-off by a 5-0 decision. In the second box-off, Hill dropped Nunn and won by a 5-0 decision to make the Olympic team as the U.S. representative in the 165-pound division.

Iran Barkley (born May 6, 1960 in Bronx, New York) is a retired American professional boxer who held world titles at middleweight (1988–89), super middleweight (1992) and light heavyweight (1992).

Known as "The Blade", Barkley first challenged for a world title against the highly skilled Sumbu Kalambay, losing on points over fifteen rounds for the vacant WBA middleweight championship in Livorno, Toscana, Italy in October 1987.

Barkley returned in 1988 with a split decision over Sanderline Williams and a fifth round stoppage of Michael Olajide, before winning the WBC middleweight championship with a third round knockout of Thomas Hearns, voted 1988 Upset of the Year by Ring magazine.

In his next fight, Barkley lost his title via split decision in a 12 round war with Roberto Durán, in a fight proclaimed 1989 Fight of the Year by Ring Magazine. Following the defeat to Duran, Barkley took on undefeated Michael Nunn for the IBF middleweight title, dropping a close majority decision. He next fought Nigel Benn in a challenge for the WBO middleweight title and was stopped on the three knockdown rule at the end of a wild first round in which both fighters were hurt.

John "The Quietman" Ruiz (born January 4, 1972 in Methuen, Massachusetts), is a former American professional boxer. Ruiz is the first Latino heavyweight champion and former two-time WBA heavyweight champion. After a professional career spanning over 18 years, Ruiz officially announced his retirement from the sport at a press conference on April 26, 2010. His final fight was a title shot against the then WBA heavyweight title holder David Haye, in which Ruiz was defeated by TKO in round 9.

Ruiz has defeated three world champions in Evander Holyfield, Hasim Rahman, and Tony Tucker, as well as top contenders such as Andrew Golota, Fres Oquendo, Jameel McCline, and Kirk Johnson.

He is currently residing in Las Vegas, Nevada.

His professional record is 44–9–1–1, with 30 knockouts. Frustrated by years of criticism from the boxing press and fans, he retired upon his second loss of the WBA Title on April 30, 2005 (to James "Lights-Out" Toney). Ruiz un-retired in 10 days, after finding out that James Toney had tested positive for anabolic steroids. The official outcome, a unanimous-decision defeat, was changed to a no-contest; the WBA ordered that Ruiz retain the title. Ruiz then filed a lawsuit against Toney, claiming that he had damaged Ruiz's boxing career (due to Toney's use of illegal steroids before their bout).