Juan Martin Aranguren defeated Gaston Arturo Grimolizzi 6-4 6-1 in the Argentina F2 round of 16 on clay. The upset overturned the form book — Gaston Arturo Grimolizzi came in leading the head-to-head 2–0. Juan Martin Aranguren claimed a first win over Gaston Arturo Grimolizzi in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-09-19 | Argentina F16 | SF | clay | Gaston Arturo Grimolizzi | 6-1 7-6(3) |
| 2011-09-12 | Argentina F15 | SF | clay | Gaston Arturo Grimolizzi | 3-6 6-4 6-2 |
Averages over each player's completed matches in the selected window (1 vs 33). 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. Small sample — read as indicative. About