Romina Ottoboni defeated Natalia Garbellotto 6-4 6-1 in the Buenos Aires 10K qualifying round on clay. The upset overturned the form book — Natalia Garbellotto came in leading the head-to-head 2–0. Romina Ottoboni claimed a first win over Natalia Garbellotto in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-08-21 | Buenos Aires 10K | R16 | clay | Natalia Garbellotto | 4-6 7-6(3) 6-0 |
| 1999-09-06 | Buenos Aires 10K | QF | clay | Natalia Garbellotto | 7-5 6-2 |