Question: What American professional boxer, boxing commentator, boxing trainer, rapper, and actor, was involved in fights refereed by Ron Lipton?
Context: Roberto Garcia Cortez (born January 29, 1975), best known as Robert Garcia, is an American former professional boxer who competed from 1992 to 2001, and held the IBF junior lightweight title from 1998 to 1999.  He has since worked as a boxing trainer, and was voted Trainer of the Year by "The Ring" magazine in 2011, and by the Boxing Writers Association of America in 2012.  Garcia is the older brother of professional boxer Mikey Garcia, who himself is a former junior lightweight world champion. 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. Kenneth "Kenny" Adams (born September 25, 1940) is an American professional boxing trainer and a former amateur boxer.  Adams is a highly respected boxing trainer, having been inducted into the Missouri Sports Hall of Fame in 2010.  Adams is a pioneer in boxing, having been the first American trainer to implement strength training.  He is also the first African-American selected as head coach of the American national boxing team.  Adams brings such a strict disciplinarian training style that the eight-time, five-division World champion Floyd Mayweather, Jr. refused to work with him.  In 1999, the multiple-time World champion Wladimir Klitschko asked Adams to assist him in properly turning over his fist on the left hook for power.  In 2005, eight-division World champion Manny Pacquiao requested to train with Adams, but Adams declined to aid to his ill wife at the time. Zach Walters, alias "Jungle Boy", (born February 4, 1981) is a retired light heavyweight professional boxer from Minnesota.  Walters is now a boxing trainer and promoter.  He owns the Jungle Boy Boxing Gym, a non-profit organization in Duluth and promotes fights as Jungle Boy Fights. 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. 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. Kaliesha West is a professional female boxer and the former 3 time WBO Female Bantamweight and IFBA super Bantamweight Boxing World Champion.  She is the first professional boxer in history, between both male and female, to become a World Champion from Inland, CA.  She was born on February 11, 1988, in South Haven, Michigan.  West currently resides in Moreno Valley California, a small suburb between Riverside and Palm Springs.  West is a Motivational Speaker and implements her courage on being a Women's Right's advocate for Women's Boxing.  She shares her passionate beliefs that equal opportunities for female fighters should be given to those who have worked hard, and accomplished the greatest of challenges in their profession whether male/female.  On September 18, 2010, West won the WBO title, becoming the first world boxing champion from the Inland Empire. (Between men and women) Her father, Juan West, is her boxing trainer and manager.  She was also a contestant on the CW reality show "Capture", she placed 4th out of 12 teams.  Currently, West is delivering her voice through social media networks, campaign, and protests across the United States in hopes to generate a following from those who believe in equal opportunities for women's boxing.  Some compare her representation in the sport of Women's Boxing to that of Billie Jean King. Floyd Mayweather Sr. (born October 19, 1952) is an American former professional boxer who competed from 1974 to 1990, and has since worked as a boxing trainer.  Fighting at welterweight during the 1970s and 1980s, Mayweather Sr. was known for his defensive abilities and overall knowledge of boxing strategy.  He is the father and former trainer of five-division boxing champion Floyd Mayweather Jr., and is credited for teaching his son the defensive skills that made him a champion. Adam Flores Cruz (born August 27, 1970) is a retired Mexican/American professional boxer, Trainer, Manager in the Heavyweight division and actor in the film "Snake Eyes".  Flores was a member of the 1996 Mexican Olympic Selection team that went on to compete in the 1996 Olympic Box offs in Halifax, Canada and was trained by world renown Boxing Trainer Eduardo García at La Colonia Boxing Club. Errol Christie (29 June 1963 – 11 June 2017) was an English professional boxer and boxing trainer.  He was the captain of the English amateur boxing team from 1980 to 1983 and European amateur champion in 1983.  After turning professional he was a regular fixture on "ITV Fight Night" in the 1980s.  After retiring from boxing he became a trainer in white-collar boxing.
Answer: Roy Jones Jr.