Joao Zwetsch defeated Ruben Alvarenga 6-0 6-4 in the Brazil 2 Masters 4 qualifying round on clay. Joao Zwetsch extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1992-10-31 | Uruguay Paraguay Masters 4 | R16 | clay | Ruben Alvarenga | 5-7 6-4 6-4 |
| 1991-04-15 | Brazil 2 Masters 3 | R16 | clay | Joao Zwetsch | 6-2 7-6 |