Guillermo Duran defeated Renzo Olivo 7-6 4-6 7-5 in the Argentina F9 qualifying round on clay. The upset overturned the form book — Renzo Olivo came in leading the head-to-head 4–1, but Guillermo Duran had been the form player, winning 3 of their last 10 on clay. Guillermo Duran narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-11-19 | Argentina F26 | F | clay | Renzo Olivo | 3-6 6-2 6-4 |
| 2012-07-16 | Argentina F18 | SF | clay | Renzo Olivo | 6-3 6-1 |
| 2011-10-24 | Argentina F21 | SF | clay | Renzo Olivo | 6-2 6-2 |
| 2011-06-20 | Argentina F8 | R16 | clay | Renzo Olivo | 7-6(4) 7-6(2) |
| 2010-05-03 | Argentina F5 | QF | clay | Guillermo Duran | 6-4 6-4 |
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