Dario Perez defeated Carlos Berlocq 6-2 6-2 in the Argentina F9 round of 16 on clay. The upset overturned the form book — Carlos Berlocq came in leading the head-to-head 1–0. Dario Perez claimed a first win over Carlos Berlocq in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-09-01 | Argentina F3 | QF | clay | Carlos Berlocq | 4-6 6-1 4-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.