Luciana Sarmenti defeated Tatiana Bua 6-4 1-6 6-3 in the Villa Del Dique 10K qualifying round on clay. The upset overturned the form book — Tatiana Bua came in leading the head-to-head 3–1, but Luciana Sarmenti had been the form player, winning 1 of their last 4 on clay. Luciana Sarmenti narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-11-01 | Carilo 10K | QF | clay | Tatiana Bua | 6-3 6-0 |
| 2010-08-23 | Buenos Aires 10K | R16 | clay | Tatiana Bua | 3-6 6-4 6-2 |
| 2010-06-07 | Cordoba 10K | R32 | clay | Luciana Sarmenti | 6-3 6-2 |
| 2008-11-24 | Buenos Aires 10K | R32 | clay | Tatiana Bua | 7-6(2) 6-3 |