Fernanda Hermenegildo defeated Carla Tiene 6-3 6-3 in the Santos 10K qualifying round on clay. The upset overturned the form book — Carla Tiene came in leading the head-to-head 2–1. Fernanda Hermenegildo narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-04-20 | Buenos Aires 10K | R32 | clay | Carla Tiene | 6-2 6-2 |
| 2008-10-06 | Mogi Das Cruzes 10K | QF | clay | Fernanda Hermenegildo | 7-5 2-6 6-4 |
| 2003-11-24 | Florianopolis 10K | R16 | clay | Carla Tiene | 6-1 6-0 |