Gustavo Sterin defeated Nicolas Barrientos 6-4 6-4 in the Ecuador F1 round of 32 on hard. The upset overturned the form book — Nicolas Barrientos came in leading the head-to-head 1–0. Gustavo Sterin claimed a first win over Nicolas Barrientos in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-06-04 | Peru F3 | R32 | clay | Nicolas Barrientos | 6-4 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.