Professional boxer who scored world championships in two weight classes--featherweight and super-featherweight--with a record of 59 wins (45 by knockout), 7 losses, and 1 draw. In 1983, Ring Magazine named Chacon its "Comeback Player of the Year." In 1988, Warren Zevon in his song "Boom Boom Mancini" from his album "Sentimental Hygiene" mentioned Chacon. In 2005, Chacon was named to the International Boxing Hall of Fame. Near the end of his life, Chacon was suffering from brain damage--"dementia pugilistica"--and was confined to a health care facility at the time of his death.