Tatiana Bua defeated Sara Gimenez 6-0 6-2 in the Asuncion 10K round of 32 on clay. The upset overturned the form book — Sara Gimenez came in leading the head-to-head 1–0, but Tatiana Bua had been the form player, winning 2 of their last 6 on clay. Tatiana Bua claimed a first win over Sara Gimenez in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-05-09 | Encarnacion 10K | R16 | clay | Sara Gimenez | 2-6 7-5 6-4 |