Nicolas Pastor defeated Antonio Pastorino 2-6 6-4 7-6 in the Argentina F12 round of 16 on clay. The upset overturned the form book — Antonio Pastorino came in leading the head-to-head 1–0, but Nicolas Pastor had been the form player, winning 7 of their last 10 on clay. Nicolas Pastor claimed a first win over Antonio Pastorino in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-01-25 | Argentina F1 | R32 | clay | Antonio Pastorino | 7-5 1-6 6-4 |