Andrea Koch Benvenuto defeated Tatiana Bua 7-6 4-6 6-4 in the Buenos Aires 10K round of 16 on clay. The upset overturned the form book — Tatiana Bua came in leading the head-to-head 1–0, but Andrea Koch Benvenuto had been the form player, winning 1 of their last 4 on clay. Andrea Koch Benvenuto claimed a first win over Tatiana Bua in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-11-26 | Santiago 10K | R16 | clay | Tatiana Bua | 7-5 6-4 |