Tatiana Bua defeated Ana Clara Duarte 6-3 4-6 6-4 in the Mazatlan 10K round of 16 on hard. Tatiana Bua extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-11-09 | Itajai 10K | F | clay | Tatiana Bua | 6-1 7-5 |
| 2009-04-20 | Buenos Aires 10K | SF | clay | Ana Clara Duarte | 6-3 5-7 6-4 |