Natalia Gussoni defeated Romina Ottoboni 7-5 6-1 in the Buenos Aires 10K final on clay. The upset overturned the form book — Romina Ottoboni came in leading the head-to-head 1–0. Natalia Gussoni claimed a first win over Romina Ottoboni in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-11-15 | Sao Jose Dos Campos 10K | R32 | clay | Romina Ottoboni | 6-4 3-6 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.