Fernanda Hermenegildo defeated Ana Clara Duarte 6-4 6-2 in the Itajai 10K round of 16 on clay. The upset overturned the form book — Ana Clara Duarte came in leading the head-to-head 2–0. Fernanda Hermenegildo claimed a first win over Ana Clara Duarte in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-07-19 | Brasilia 10K | SF | hard | Ana Clara Duarte | 7-6(3) 6-4 |
| 2007-10-22 | Itu 10K | QF | clay | Ana Clara Duarte | 7-6(3) 3-6 6-3 |