Guillermo Duran defeated Mauricio Doria Medina 3-6 6-2 6-2 in the Peru F2 round of 16 on clay. The upset overturned the form book — Mauricio Doria Medina came in leading the head-to-head 1–0. Guillermo Duran claimed a first win over Mauricio Doria Medina in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-07-14 | Peru F3 | R32 | clay | Mauricio Doria Medina | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.