Eduarda Piai defeated Nathalia Rossi 6-0 6-3 in the Asuncion 10K qualifying round on clay. The upset overturned the form book — Nathalia Rossi came in leading the head-to-head 7–1. Eduarda Piai narrowed the head-to-head to 7–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-03-16 | Ribeirao Preto $10K | R32 | clay | Eduarda Piai | 6-3 6-3 |
| 2013-11-11 | Sao Jose Do Rio Preto 10K | SF | clay | Nathalia Rossi | 6-2 4-6 7-6(2) |
| 2012-08-13 | Trujillo 10K | R16 | clay | Nathalia Rossi | 7-6(4) 6-1 |
| 2011-08-08 | Sao Paulo 10K | QF | clay | Nathalia Rossi | 6-3 6-1 |
| 2011-08-01 | Sao Paulo 10K | R32 | clay | Nathalia Rossi | 6-3 6-3 |
| 2010-10-25 | Itu 10K | QF | clay | Nathalia Rossi | 3-6 7-5 7-5 |
| 2010-09-13 | Itapema 10K | R32 | clay | Nathalia Rossi | 6-3 6-0 |
| 2010-08-09 | Itaparica 10K | R16 | hard | Nathalia Rossi | 6-2 6-1 |
Averages over each player's completed matches in the selected window (1 vs 2). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About