Estefania Donnet defeated Karen Castiblanco 6-2 4-6 6-4 in the Cochabamba 10K semi-final on clay. The upset overturned the form book — Karen Castiblanco came in leading the head-to-head 1–0. Estefania Donnet claimed a first win over Karen Castiblanco in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-06-07 | Cordoba 10K | R16 | clay | Karen Castiblanco | 6-4 6-4 |