Juan Pablo Villar defeated Diego Cristin 6-4 6-4 in the Argentina F10 round of 32 on clay. The upset overturned the form book — Diego Cristin came in leading the head-to-head 1–0, but Juan Pablo Villar had been the form player, winning 4 of their last 10 on clay. Juan Pablo Villar claimed a first win over Diego Cristin in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-10-23 | Brazil F16 | F | clay | Diego Cristin | 3-6 6-4 6-4 |