Question: What American professional boxer, boxing commentator, boxing trainer, rapper, and actor, was involved in fights refereed by Ron Lipton?

full_context: Document 1: Donovan Ruddock: Donovan "Razor" Ruddock (born December 21, 1963) is a Canadian former professional boxer who competed from 1982 to 2001, and in 2015. A promising heavyweight of the late 1980s and early 1990s, Ruddock earned his nickname of "Razor" for his cutting jab, although he was better known for his powerful hybrid left hook/uppercut, which he called "The Smash". One of the best exhibitions of his left hand power was his brutal knockout of former WBA heavyweight champion Michael Dokes in 1990. Ruddock is also known for his two fights against Mike Tyson in 1991, and Lennox Lewis 1992.
Document 2: Roy Jones Jr.: Roy Levesta Jones Jr. (born January 16, 1969) is an American professional boxer, boxing commentator, boxing trainer, rapper, and actor who holds dual American and Russian citizenship. He is a six-time former world champion in four weight classes, having held 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.
Document 3: Kenny Bayless: Kenny Bayless (born 1950) is an American boxing referee from Nevada. He is best known for having refereed many of the sport's superfights, including Manny Pacquiao vs. Ricky Hatton, Oscar De La Hoya vs. Floyd Mayweather Jr., Ricky Hatton vs. Paulie Malignaggi, Miguel Cotto vs. Antonio Margarito, Manny Pacquiao vs. Miguel Cotto, as well as Floyd Mayweather Jr. vs. Manny Pacquiao. Bayless's catchphrase, when giving his instructions to the fighters before the opening bell, is "What I say you must obey."
Document 4: Ron Lyle: Ronald "Ron" Lyle (February 12, 1941 – November 26, 2011) was an American professional boxer who competed from 1971 to 1980, and in 1995. He challenged once for the undisputed world heavyweight title, losing to Muhammad Ali in 1975. Lyle was known for his punching power, crowd-pleasing fighting style, as well as courage and determination inside the ring. He held notable wins over Buster Mathis, Oscar Bonavena, Jimmy Ellis, Earnie Shavers, Joe Bugner, and Scott LeDoux, but is best known for his slugfest against George Foreman in 1976, which won Fight of the Year honors by "The Ring" magazine.
Document 5: Andre Ward: Andre Michael Ward (born February 23, 1984) is an American former professional boxer who competed from 2004 to 2017. He retired with an undefeated record and held eight world titles in two weight classes, including the unified WBA (Super), WBC, "Ring" magazine, and lineal super middleweight titles between 2009 and 2015; and the unified WBA (Undisputed), IBF, WBO, and "Ring" light heavyweight titles between 2016 and 2017. During his reign as light heavyweight champion, Ward was ranked as the world's best active boxer, pound for pound, by "The Ring" magazine and the Transnational Boxing Rankings Board (TBRB), as well as the world's best active boxer in the division by "The Ring", the TBRB, and BoxRec.
Document 6: Sugar Ray Leonard: 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 himself, Roberto Durán, Thomas Hearns and Marvin Hagler.
Document 7: Joe Smith Jr.: Joe Smith Jr. (born September 20, 1989) is an American professional boxer who held the regional WBC International light heavyweight title from 2016 to 2017. He rose to prominence in 2016 by scoring an upset knockout victory over Andrzej Fonfara, and later becoming the first boxer to score a stoppage victory over former world champion Bernard Hopkins, who retired after their fight.
Document 8: Ray Mercer: Raymond Anthony "Ray" Mercer (born April 4, 1961) is an American former professional boxer, kickboxer, and mixed martial artist. In boxing he competed from 1989 to 2008, and held the WBO heavyweight title from 1991 to 1992. As an amateur he won a gold medal in the heavyweight division at the 1988 Summer Olympics. As a mixed martial artist, Mercer is known for scoring an upset one-punch knockout victory over former UFC heavyweight champion Tim Sylvia in 2009.
Document 9: The Contender Challenge: UK vs. USA: The Contender Challenge: UK vs. USA was a series of boxing matches on 30 March 2007, held at Metro Radio Arena, Newcastle, England, featuring 6 boxers from the US reality television shows "The Contender" and "The Contender 2". The Contenders, in a team coached by Sugar Ray Leonard, took on 6 boxers from the UK, all promoted by Frank Warren, and coached by Barry McGuigan. The winning team was awarded the "Sugar Ray Leonard Cup," not unlike the Ryder Cup in Golf
Document 10: Oleksandr Usyk: Oleksandr Oleksandrovych Usyk (Ukrainian: Олекса́ндр Олекса́ндрович У́сик ) is a Ukrainian professional boxer who has held the WBO junior heavyweight title since 2016. As of May 2017 he is ranked as the world's best in the division by "The Ring" magazine, the Transnational Boxing Rankings Board, and BoxRec. As an amateur, Usyk won gold medals at the 2011 World Championships and 2012 Olympics, both in the heavyweight division.
Document 11: Mike Tyson: Michael Gerard Tyson ( ; born June 30, 1966) is an American former professional boxer who competed from 1985 to 2005. He reigned as the undisputed world heavyweight champion and holds the record as the youngest boxer to win a heavyweight title at 20 years, 4 months and 22 days old. Tyson won his first 19 professional fights by knockout, 12 of them in the first round. He won the WBC title in 1986 after stopping Trevor Berbick in two rounds, and added the WBA and IBF titles after defeating James Smith and Tony Tucker in 1987. This made Tyson the first heavyweight boxer to simultaneously hold the WBA, WBC and IBF titles, and the only heavyweight to successively unify them.
Document 12: Tony Lopez (boxer): Tony "The Tiger" Lopez (born February 24, 1963), is a former professional boxer from Sacramento. He was a 3-Time World Boxing Champion. He is remembered for his victory in the 1988 "The Ring" Fight of the year by decision over Rocky Lockridge. He fought against Julio César Chávez in 1994 in Monterrey. He lost by TKO. Tony Lopez is now retired from boxing and runs a bail bond agency in Sacramento.
Document 13: Ron Lipton: Ron Lipton (born August 8, 1946) is an American boxing referee who has officiated in world title bouts in the United States, Ireland and Italy, and on HBO pay-per-view. Lipton refereed fights involving Evander Holyfield, Ray Mercer, Roy Jones Jr., Oscar De La Hoya, David Tua, Junior Jones, Chris Eubank, Donovan Ruddock, Pernell Whitaker and Roberto Duran.
Document 14: Danny McFarlane (boxing referee): Daniel (Danny) McFarlane (b Pennywell, Sunderland, Tyne and Wear, England, UK, 30 March 1967) is a former boxer turned British AIBA boxing referee, whose most high-profile bout saw Shakur Stevenson (United States), take on Robeisy Ramirez (Cuba) in the Rio de Janeiro 2016 Olympic bantamweight final.
Document 15: Freddie Roach (boxing): Frederick Steven "Freddie" Roach (born March 5, 1960) is an American boxing trainer and former professional boxer. Roach is widely regarded as one of the best boxing trainers of all time. He is the enduring boxing coach of the eight-division world champion Manny Pacquiao, five-time and four-division World Champion Miguel Cotto, former WBC Middleweight Champion Julio César Chávez, Jr., defensive master and three-time world champion James Toney, former UFC Welterweight Champion Georges St-Pierre, as well as top prospects Jose Benavidez, Peter Quillin, and Vanes Martirosyan. Roach was the trainer of former two-time world champion and notable women's champion Lucia Rijker. He has also trained former junior welterweight champion Amir Khan.
ground_truth: Roy Jones Jr.