Páez began his career in 1958 at San Lorenzo de Almagro in Buenos Aires.
With San Lorenzo he won the 1959 Argentine Primera División and took part in the 1960 Copa Libertadores where they reached the semi-finals before getting knocked out by Uruguayan side C.A.
While at San Lorenzo Páez was called up to the Argentina squad for the 1962 FIFA World Cup in Chile, where they were eliminated in the group stage.
Páez stayed with San Lorenzo until 1967 before moving to Quilmes Atlético Club where he retired after the 1968 season.
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