Carla Lucero defeated Ana Clara Duarte 6-4 7-6 in the Fortaleza 10K qualifying round on clay. The upset overturned the form book — Ana Clara Duarte came in leading the head-to-head 2–0, but Carla Lucero had been the form player, winning 6 of their last 8 on clay. Carla Lucero 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 |
|---|---|---|---|---|---|
| 2013-12-02 | Sao Jose Dos Campos 10K | R16 | clay | Ana Clara Duarte | 6-1 3-6 6-2 |
| 2009-12-07 | Santiago 10K | F | clay | Ana Clara Duarte | 6-2 6-0 |