Hector Moretti defeated Matias Oneille 6-2 6-2 in the Argentina F9 round of 16 on clay. The upset overturned the form book — Matias Oneille came in leading the head-to-head 2–1. Hector Moretti narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2002-11-11 | Uruguay F1 | R32 | clay | Hector Moretti | 7-6(3) 7-6(3) |
| 2001-07-30 | Argentina F7 | R32 | clay | Matias Oneille | 7-5 6-1 |
| 1999-05-29 | Argentina 1 Masters 1 | R16 | clay | Matias Oneille | 4-6 6-4 7-5 |