Joao Zwetsch defeated Carlos Zwetsch 5-7 6-2 7-6 in the Brazil 2 Masters 4 semi-final 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 |
|---|---|---|---|---|---|
| 1996-10-19 | Brazil 4 Masters 1 | SF | clay | Joao Zwetsch | 7-5 1-0 |
| 1991-04-15 | Brazil 2 Masters 3 | F | clay | Joao Zwetsch | 7-5 1-6 6-3 |