Nicolas Barrientos defeated Gustavo Sterin 6-4 6-4 in the Peru F3 round of 32 on clay. The upset overturned the form book — Gustavo Sterin came in leading the head-to-head 1–0, but Nicolas Barrientos had been the form player, winning 6 of their last 10 on clay. Nicolas Barrientos claimed a first win over Gustavo Sterin in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-09-06 | Ecuador F1 | R32 | hard | Gustavo Sterin | 6-4 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.