|Full name||Gustavo Alfredo Neffa Rodríguez|
|Date of birth||30 November 1971|
|Place of birth||Asunción, Paraguay|
|Playing position||Left winger, striker|
|1992||Unión de Santa Fe||16||(3)|
|1996–1998||Sol de América||?||(?)|
|* Senior club appearances and goals counted for the domestic league only.
He started his career on Olimpia Asunción, and at the age of 18, noted by Juventus, Neffa moved on loan to Serie A club U.S. Cremonese, where he failed to make his breakthrough. He returned in South America in 1992, playing for Unión de Santa Fe, Boca Juniors and Estudiantes, before leaving football and marrying tennis player Rossana de los Ríos, who gave him a daughter. He also made a short comeback as a player/coach to Dallas Burn in 2000, just appearing on one pre-season match. 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.
Neffa made his international debut for the Paraguay national football team on 1 July 1989 in the 1989 Copa América match against Peru (5-2) win, in which he scored once (2-1). He obtained a total number of 15 international caps, scoring four goals for the national side.
- Todos los extranjeros que jugaron en Boca Juniors
- Preseason vs Kansas City
- (Italian) Gustavo, il paraguaiano che ha dato il nome a Neffa (Gazzetta.it)