Yanet Nunez Mojarena defeated Karen Castiblanco 6-1 6-3 in the Caracas 10K round of 32 on hard. The upset overturned the form book — Karen Castiblanco came in leading the head-to-head 1–0. Yanet Nunez Mojarena claimed a first win over Karen Castiblanco in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-11-12 | Buenos Aires 10K | R32 | clay | Karen Castiblanco | 4-6 6-4 6-1 |