Question: The light heavyweight champion Ronald Johnson is known for fighting and promoting big boxing events that featured which Cuban American former professional boxer who won a gold medal as an amateur at the 1992 Olympics?

<P0-S0> Raymond Anthony "Ray" Mercer (born April 4, 1961) is an American former professional boxer, kickboxer, and mixed martial artist. <P0-S1>  In boxing he competed from 1989 to 2008, and held the WBO heavyweight title from 1991 to 1992. <P0-S2>  As an amateur he won a gold medal in the heavyweight division at the 1988 Summer Olympics. <P0-S3>  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. <SEP> <P1-S0>  He is a two-weight world champion, having held the WBA super featherweight title from 2000 to 2002; and the WBC, "Ring" magazine, and lineal lightweight titles between 2006 and 2008. <P1-S1> Joel Casamayor Johnson (born July 12, 1971) is a Cuban American former professional boxer who competed from 1996 to 2011. <P1-S2>  As an amateur, Casamayor won a gold medal in the bantamweight division at the 1992 Olympics, after which he defected to the United States on the eve of the 1996 Olympics. <SEP> <P2-S0> Shannon Grey Ritch (born September 27, 1970) is an American professional mixed martial artist, boxer, professional wrestler and kickboxer, known for being the former Gladiators Challenge Heavyweight Champion and KOTC Middleweight Champion also current RUF Interim Heavyweight Champion and IFC Middleweight Champion. <P2-S1>  A professional competitor since 1998, Ritch has competed for the MFC, Pancrase, K-1, PRIDE, Rebel Fighting Championship, King of the Cage and the WEC. <P2-S2>  Ritch has also has been featured in two episodes of Walker, Texas Ranger as a Biker Gang Member and a character named Knight, Choke in 2011 as an extra, CSI Las Vegas as Thug #2, an episode of iCarly as a MMA Fighter, an episode of Numbers in 2010, an episode of Ultimate Soldier Challenge on the History Channel representing a military contracting company and most recently in 2017 the direct to DVD film, directed by Robert Parham, Bullets, Blades and Blood and upcoming in 2018 No Way Out directed by Jeffrey D. Parker. <P2-S3>  Shannon claims he has over 200 professional MMA fights 112 wins, 88 losses and 2 draws, some fights going undocumented and dating back as far as 1991. <P2-S4>  His documented record of fights goes back to 1998 with a record of 56 wins, 81 loses, and 4 draws. <P2-S5>  Shannon also holds a 2-1 record in professional boxing and a 25-2 record in bare knuckle boxing with all of his wins coming by way of knockout, in 2017 he was inducted into the Bare Knuckle Boxing Hall of Fame and also plans to round out his boxing career in 2018 against boxing superstar Bobby Gunn. <P2-S6>  Ritch is also an occasional professional wrestler, recently in mid 2017 main eventing a card in Guyana. <P2-S7>  Shannon has also found success as a grappler winning multiple NAGA, Grapplers Quest and Abu Dhabi Combat Club competitions, most recently winning a gold medal in the super heavyweight division at the Grand Canyon 2017 BJJ Open in Arizona and a silver medal at the '17 Arizona State BJJ Championships. <P2-S8>  Ritch is also an avid golf player, winning 1st place in many state and pro am competitions held within his native Arizona as recent as 2017. <SEP> <P3-S0> Ronald Johnson is a Light heavyweight champion from Cleveland, Ohio, USA. <P3-S1>  Ronald have won 15 out of 16 fights in his career. <P3-S2>  Ronald Johnson is known both for fighting and promoting big boxing events that featured Zab Judah, Joel Casamayor, Michael Grant, Hector Camacho Jr. and many other notable names in the sport. <P3-S3>  After a five-year hiatus from the ring he is back and focused on boxing.