Nicolas Alejandro De Gregorio defeated Pablo Galdon 7-6 6-1 in the Argentina F4 q16 on clay. The upset overturned the form book — Pablo Galdon came in leading the head-to-head 1–0, but Nicolas Alejandro De Gregorio had been the form player, winning 5 of their last 10 on clay. Nicolas Alejandro De Gregorio claimed a first win over Pablo Galdon in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-09-05 | Argentina F14 | R32 | clay | Pablo Galdon | 6-1 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.