Guillermo Duran defeated Juan Vazquez Valenzuela 6-4 7-5 in the Argentina F27 qualifying round on clay. The result followed the form book — Guillermo Duran came in leading the head-to-head 2–0. Guillermo Duran extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-12-03 | Argentina F28 | R16 | clay | Guillermo Duran | 6-3 4-6 6-2 |
| 2012-06-18 | Argentina F14 | R16 | clay | Guillermo Duran | 7-5 6-7(2) 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.