Patricio Heras defeated Alejandro Kon 6-2 6-4 in the Argentina F10 round of 16 on clay. The upset overturned the form book — Alejandro Kon came in leading the head-to-head 2–0. Patricio Heras claimed a first win over Alejandro Kon in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-08-15 | Argentina F11 | R16 | clay | Alejandro Kon | 7-6(1) 6-3 |
| 2009-10-26 | Argentina F21 FUTURES | R16 | clay | Alejandro Kon | 6-1 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.