Romina Ottoboni defeated Geraldine Aizenberg 3-6 6-3 6-4 in the Buenos Aires 10K round of 16 on clay. The upset overturned the form book — Geraldine Aizenberg came in leading the head-to-head 1–0. Romina Ottoboni claimed a first win over Geraldine Aizenberg in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-09-25 | Montevideo 10K | SF | clay | Geraldine Aizenberg | 6-3 3-6 6-2 |