Sebastian Uriarte defeated Matias Oneille 6-1 6-3 in the Argentina 3 round of 32 on clay. The result followed the form book — Sebastian Uriarte came in leading the head-to-head 1–0. Sebastian Uriarte extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-10-06 | Chile F5 | R16 | clay | Sebastian Uriarte | 6-1 6-4 |