Juan Vazquez Valenzuela defeated Diego Cristin 6-2 6-0 in the Argentina F3 round of 32 on clay. The upset overturned the form book — Diego Cristin came in leading the head-to-head 1–0, but Juan Vazquez Valenzuela had been the form player, winning 3 of their last 7 on clay. Juan Vazquez Valenzuela claimed a first win over Diego Cristin in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-04-13 | Argentina F1 | R32 | clay | Diego Cristin | 6-1 7-6(3) |