Miguel Tobon defeated Ruben Alvarenga 7-5 2-6 7-5 in the Brazil 2 Masters 1 round of 16 on clay. The result followed the form book — Miguel Tobon came in leading the head-to-head 1–0. Miguel Tobon extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-08-19 | Colombia Masters 2 | R16 | clay | Miguel Tobon | 6-7 6-2 6-0 |