Claim: In 1959, former Chilean boxer Alfredo Cornejo Cuevas (born June 6, 1933) won the gold medal in the welterweight division at the Pan American Games (held in Chicago, United States, from August 27 to September 7) in Chicago, United States, and the world amateur welterweight title in Mexico City.
Evidence: Alfredo Cornejo Cuevas (born June 6, 1933) is a former Chilean boxer, who won the gold medal in the welterweight division at the 1959 Pan American Games in Chicago, United States. The Men's Boxing Tournament at the 1959 Pan American Games was held in Chicago, United States, from August 27 to September 7. In the same year he also won the world amateur welterweight title in Mexico City.