Matias Oneille defeated Federico Sansonetti 6-3 6-3 in the Uruguay F4 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 |
|---|---|---|---|---|---|
| 2004-04-26 | Argentina F1 | R32 | clay | Matias Oneille | 7-5 6-0 |