Luis Andreotti defeated Joao Zwetsch 6-4 6-3 in the Brazil 1 Masters 1 round of 16 on clay. The result followed the form book — Luis Andreotti came in leading the head-to-head 1–0. Luis Andreotti extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-05-13 | Brazil 3 Masters 1 | QF | clay | Luis Andreotti | 7-6 3-6 6-3 |