Romina Ottoboni defeated Mariana Mesa 7-6 6-2 in the Buenos Aires 10K final on clay. The upset overturned the form book — Mariana Mesa came in leading the head-to-head 1–0, but Romina Ottoboni had been the form player, winning 4 of their last 6 on clay. Romina Ottoboni claimed a first win over Mariana Mesa in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-09-07 | Lima 10K | SF | clay | Mariana Mesa | 6-3 6-1 |