Karen Castiblanco defeated Karen Johanna Ramirez Rivera 7-6 7-6 in the La Paz 10K qualifying round on clay. The result followed the form book — Karen Castiblanco came in leading the head-to-head 2–1. Karen Castiblanco extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-11-08 | Bogota 10K | QF | clay | Karen Johanna Ramirez Rivera | 6-0 1-6 6-4 |
| 2010-06-21 | Buenos Aires 10K | R32 | clay | Karen Castiblanco | 6-1 6-1 |
| 2009-04-20 | Buenos Aires 10K | R32 | clay | Karen Castiblanco | 7-6(8) 7-5 |