Mathias Huning defeated Rodolfo Ramos Paganini 6-7 6-2 6-3 in the Brazil 2 Masters 4 semi-final on clay. The upset overturned the form book — Rodolfo Ramos Paganini came in leading the head-to-head 1–0. Mathias Huning claimed a first win over Rodolfo Ramos Paganini in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-04-15 | Brazil 2 Masters 2 | R32 | clay | Rodolfo Ramos Paganini | 6-3 6-4 |