Guillermo Duran defeated Facundo Arguello 6-2 0-6 6-2 in the Argentina F16 qualifying round on clay. The upset overturned the form book — Facundo Arguello came in leading the head-to-head 4–1. Guillermo Duran narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-06-18 | Argentina F14 | QF | clay | Facundo Arguello | 6-3 6-4 |
| 2012-06-04 | Argentina F11 | QF | clay | Facundo Arguello | 6-3 6-3 |
| 2011-06-27 | Argentina F9 | F | clay | Facundo Arguello | 6-4 6-2 |
| 2010-08-02 | Argentina F15 | SF | clay | Facundo Arguello | 6-1 7-6(6) |
| 2009-11-23 | Argentina F25 | R32 | clay | Guillermo Duran | 6-1 6-2 |
Averages over each player's completed matches in the selected window (33 vs 200). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About