De Zordo, who started for the club GS Fiamme Gialle, won bronze for the first time at the Italian championships in 1958 behind Luigi Pennacchio and Nilo Zandanel . In the same year he started for the first time in the Four Hills Tournament , but remained in the top twenty without a front placement despite several results. In 1960 he won silver at the Italian championships. At the 1960 Winter Olympics in Squaw Valley , he reached the 24th place on the normal hill. A year after the Games, he won his first and only Italian championship. In 1962 he won the silver medal behind his brother Bruno De Zordo . On March 6, 1963 De Zordo won the first competition on the Großer Zirmbergschanze in Ruhpolding . After the Four Hills Tournament 1963/64 in which again could not achieve any top placements, he ended his career at international level. Nationally, he was able to win bronze again at the Italian Championships in 1964 and 1967 before finally retiring from ski jumping.