Guillermo Duran defeated Kevin Konfederak 7-6 4-6 6-2 in the Argentina F9 semi-final on clay. The result followed the form book — Guillermo Duran came in leading the head-to-head 3–1. Guillermo Duran extended the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-06-06 | Argentina F6 | F | clay | Kevin Konfederak | 6-4 2-6 7-5 |
| 2010-10-25 | Argentina F21 | R32 | clay | Guillermo Duran | 7-6(3) 2-6 6-4 |
| 2009-08-24 | Colombia F5 | R16 | clay | Guillermo Duran | 6-4 6-3 |
| 2009-05-04 | Argentina F4 | R32 | clay | Guillermo Duran | 6-4 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.