Whom did Ron Lyle and Oscar Bonavena both box?
Oscar Bonavena Oscar Natalio "Ringo" Bonavena (September 25, 1942 – May 22, 1976) was an Argentinian heavyweight professional boxer with a career record of 58 wins, 9 losses and 1 draw. A rugged, wild-swinging puncher, he was nicknamed "Ringo" because of his Beatles haircut, and enjoyed professional success in both Argentina and the United States. He is most famous for giving both Joe Frazier and Muhammad Ali tough battles.
José Nápoles José Ángel Nápoles, nicknamed "Mantequilla" ("Butter", referring to his smooth boxing style), (born April 13, 1940), is a Cuban-Mexican boxer and former World Welterweight Champion. He is frequently ranked as one of the greatest fighters of all time in that division and is a member of the International Boxing Hall of Fame. After debuting professionally in Cuba, he fought out of Mexico and became a Mexican citizen.