Matias Oneille defeated Otavio Rovati 5-7 6-3 6-3 in the Argentina 1 Masters 3 round of 32 on clay. The result followed the form book — Matias Oneille came in leading the head-to-head 1–0. Matias Oneille extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-09-28 | Bolivia F2 | R16 | clay | Matias Oneille | 7-5 6-0 |