Melisa Arevalo defeated Natalia Gussoni 3-6 6-3 6-3 in the Guayaquil 10K final on clay. The upset overturned the form book — Natalia Gussoni came in leading the head-to-head 2–0, but Melisa Arevalo had been the form player, winning 3 of their last 8 on clay. Melisa Arevalo claimed a first win over Natalia Gussoni in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-08-20 | Buenos Aires 10K | F | clay | Natalia Gussoni | 6-4 6-0 |
| 2000-09-04 | Buenos Aires 10K | SF | clay | Natalia Gussoni | 6-0 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.