Christy Elliott competed in the men's light-middleweight boxing at the 1972 Munich Olympic Games, winning his opening bout before being stopped in the second round of his next contest in what was described as one of the best rounds of boxing of the entire Munich Games.
The only member of the Irish boxing team to return undefeated from the USA training camp, Elliott arrived in Munich 'fitter than ever before.' After a hesitant start against Farouk Kesrouani of Lebanon he finished strongly for a comfortable victory, before facing Mexico's Villanueva.
Elliott won the opening round and floored Villanueva early in the second, while the Mexican also received a public warning. What followed was a fiercely contested battle in which both boxers exchanged punches in rapid succession. As the bout progressed, Villanueva began to assert himself through persistent combination punching, and after Elliott received two standing counts, the referee stopped the contest in the final round following a sustained attack on the ropes.