Juan Pablo Villar defeated Juan Manuel Valverde 0-6 6-1 6-0 in the Argentina F9 round of 32 on clay. The upset overturned the form book — Juan Manuel Valverde came in leading the head-to-head 2–0. Juan Pablo Villar claimed a first win over Juan Manuel Valverde in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-08-29 | Argentina F13 | SF | clay | Juan Manuel Valverde | 6-3 6-4 |
| 2011-08-15 | Argentina F11 | QF | clay | Juan Manuel Valverde | 2-6 6-2 6-2 |