Tatiana Bua defeated Maria Constanza De Las Mercedes Vega 6-4 6-3 in the Buenos Aires 10K round of 32 on clay. The result followed the form book — Tatiana Bua came in leading the head-to-head 2–0. Tatiana Bua extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-10-29 | Buenos Aires 25K | R32 | clay | Tatiana Bua | 6-1 6-4 |
| 2010-06-14 | Buenos Aires 10K | R32 | clay | Tatiana Bua | 6-2 6-3 |