| 1992 |
Hard |
Jaime Oncins
m. Luis Herrera
6-3 6-2 |
| 1991 |
Hard |
Jordi Arrese
m. Jaime Oncins
1-6 6-4 6-0 |
| 1990 |
Carpet |
Luiz Mattar
m. Andrew Sznajder
6-4 6-4 |
| 1989 |
Carpet |
Luiz Mattar
m. Martin Jaite
6-4 5-7 6-4 |
| 1988 |
Carpet |
Javier Frana
m. Cassio Motta
7-5 4-6 6-3 |
| 1986 |
Clay |
Luiz Mattar
m. Alejandro Ganzabal
6-7 6-4 6-3 |
| 1985 |
Clay |
Givaldo Barbosa
m. Marcelo Hennemann
7-5 6-3 |
| 1982 |
Clay |
Joao Soares
m. Mark Dickson
6-1 0-6 6-1 |
| 1981 |
Clay |
Julio Goes
m. Pablo Arraya
6-3 6-3 |
| 1980 |
Clay |
Carlos Kirmayr
m. Carlos Lando
6-4 6-0 |