Maria Fernanda Alvarez Teran defeated Fernanda Hermenegildo 6-2 6-1 in the Tucuman 10K round of 16 on clay. The upset overturned the form book — Fernanda Hermenegildo came in leading the head-to-head 2–1, but Maria Fernanda Alvarez Teran had been the form player, winning 4 of their last 8 on clay. Maria Fernanda Alvarez Teran narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-03-14 | Metepec 10K | R32 | hard | Maria Fernanda Alvarez Teran | 7-5 6-0 |
| 2010-05-10 | Rio de Janeiro 25K | R32 | clay | Fernanda Hermenegildo | 6-1 6-3 |
| 2008-03-31 | Obregon 10K | R16 | hard | Fernanda Hermenegildo | 6-4 7-6(4) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.