Natalia Gussoni defeated Sabrina Valenti 7-5 6-3 in the Buenos Aires 10K qualifying round on clay. The result followed the form book — Natalia Gussoni came in leading the head-to-head 1–0. Natalia Gussoni extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-11-22 | Campos 10K | R16 | clay | Natalia Gussoni | 6-1 6-7 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.