Karen Johanna Ramirez Rivera defeated Karen Castiblanco 6-0 1-6 6-4 in the Bogota 10K qualifying round on clay. The upset overturned the form book — Karen Castiblanco came in leading the head-to-head 3–0. Karen Johanna Ramirez Rivera claimed a first win over Karen Castiblanco in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-07-19 | La Paz 10K | QF | clay | Karen Castiblanco | 7-6(6) 7-6(1) |
| 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 |