Joao Zwetsch defeated Egberto Caldas 5-7 6-3 6-4 in the Uruguay Paraguay Masters 4 round of 32 on clay. The result followed the form book — Joao Zwetsch came in leading the head-to-head 2–0. Joao Zwetsch extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1995-04-01 | Argentina 1 Masters 4 | R32 | clay | Joao Zwetsch | 7-6 6-0 |
| 1991-03-18 | Brazil 1 Masters 4 | R32 | clay | Joao Zwetsch | 6-3 6-0 |