In 1971 Sá joined Independiente where he was part of the team that won the Metropolitano 1971 title followed by an unprecedented four consecutive Copa Libertadores titles. He also won the first of his two Intercontinental Cup title in 1973.
In 1976 Sá was transferred to Boca Juniors where he won a further six major titles, 2 Metropolitano, 2 Copa Libertadores, 1 Nacional and 1 Intercontinental Cup. In his time at Boca he played 195 games for the club in all competitions, scoring 2 goals.
After leaving Boca in 1981 Sá played for Gimnasia de Jujuy for one season before his retirement in 1982.