Soledad Esperon defeated Jenifer Widjaja 6-1 6-3 in the Juarez 25K qualifying round on clay. The upset overturned the form book — Jenifer Widjaja came in leading the head-to-head 4–1. Soledad Esperon narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-11-20 | Puebla 25K | R16 | hard | Jenifer Widjaja | 6-1 6-2 |
| 2005-10-03 | Juarez 50K | R16 | clay | Jenifer Widjaja | 6-3 2-6 6-4 |
| 2005-05-23 | Campobasso 25K | R32 | clay | Soledad Esperon | 6-2 6-2 |
| 2005-03-14 | Morelia 10K | R16 | hard | Jenifer Widjaja | 6-2 6-4 |
| 2004-08-16 | Guayaquil 10K | F | hard | Jenifer Widjaja | 6-3 6-2 |