Cesar Kist defeated Joao Zwetsch 6-1 6-3 in the Brazil 1 Masters 3 round of 32 on clay. The result followed the form book — Cesar Kist came in leading the head-to-head 1–0. Cesar Kist extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-03-18 | Brazil 1 Masters 4 | QF | clay | Cesar Kist | 6-7 6-3 6-3 |