Gustavo Neffa appeared at the 1992 Summer Olympics in the Paraguayan football team, playing a single match against Ghana, then he returned to South America in 1992, and played for Boca Juniors.
He also appeared at the 1992 Summer Olympics in the Paraguayan football team, playing a single match against Ghana; it was during this experience that Neffa met his future wife Rossana. He returned in South America in 1992, playing for Boca Juniors , before leaving football and marrying tennis player Rossana de los Rios, who gave him a daughter. 
