Tatiana Bua defeated Estefania Donnet 7-6 6-2 in the Buenos Aires 10K qualifying round on clay. Tatiana Bua extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-11-22 | Asuncion 10K | R16 | clay | Estefania Donnet | 6-1 6-4 |
| 2010-06-14 | Buenos Aires 10K | R16 | clay | Tatiana Bua | 2-6 7-5 7-6(6) |