Nelson Aerts defeated Joao Zwetsch 7-6 6-1 in the Brazil 1 Masters 1 semi-final on clay. The upset overturned the form book — Joao Zwetsch came in leading the head-to-head 1–0. Nelson Aerts claimed a first win over Joao Zwetsch in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1996-10-19 | Brazil 4 Masters 2 | R16 | clay | Joao Zwetsch | 6-2 3-6 6-3 |