Nathalia Rossi defeated Natasha Lotuffo 6-1 3-6 6-2 in the Mogi Das Cruzes 10K semi-final on clay. The upset overturned the form book — Natasha Lotuffo came in leading the head-to-head 3–1, but Nathalia Rossi had been the form player, winning 5 of their last 8 on clay. Nathalia Rossi narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-04-02 | Ribeirao Preto 10K | R16 | hard | Natasha Lotuffo | 2-6 6-2 6-2 |
| 2010-09-13 | Itapema 10K | QF | clay | Natasha Lotuffo | 4-6 7-5 6-4 |
| 2010-08-16 | Itaparica 10K | QF | hard | Natasha Lotuffo | 6-7(8) 7-6(0) |
| 2008-07-21 | Brasilia 10K | R32 | clay | Nathalia Rossi | 7-5 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.