Gaston Giussani defeated Andres Molteni 2-6 7-6 6-2 in the Argentina F5 round of 32 on clay. The upset overturned the form book — Andres Molteni came in leading the head-to-head 2–0. Gaston Giussani claimed a first win over Andres Molteni in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-06-21 | Argentina F10 | QF | clay | Andres Molteni | 6-4 6-4 |
| 2009-05-18 | Argentina F6 | R32 | clay | Andres Molteni | 6-1 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.