Joana Cortez defeated Soledad Esperon 6-3 2-6 6-1 in the Asuncion 10K round of 32 on clay. The upset overturned the form book — Soledad Esperon came in leading the head-to-head 2–1, but Joana Cortez had been the form player, winning 2 of their last 7 on clay. Joana Cortez narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-11-20 | Puebla 25K | R32 | hard | Soledad Esperon | 6-3 6-4 |
| 2006-10-30 | Santa Cruz 25K | R32 | clay | Soledad Esperon | 6-4 6-3 |
| 2006-10-02 | San Luis Potosi 25K | R32 | hard | Joana Cortez | 6-4 6-1 |