Nathalia Rossi defeated Mailen Auroux 6-1 1-6 6-1 in the Buenos Aires 10K semi-final on clay. The upset overturned the form book — Mailen Auroux came in leading the head-to-head 3–2. Nathalia Rossi narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-02-06 | Riviera De Sao Lourenco 25K | R16 | hard | Mailen Auroux | 6-1 6-1 |
| 2009-09-21 | Cd Obregon SON 10K | F | hard | Mailen Auroux | 6-3 6-0 |
| 2009-08-31 | Celeya Gto 10K | QF | clay | Mailen Auroux | 6-1 6-1 |
| 2009-05-18 | Santos 25K | R32 | clay | Nathalia Rossi | 6-4 6-1 |
| 2008-07-28 | Campos Do Jordao 25K | R32 | hard | Nathalia Rossi | 6-3 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.