Juan Albert Viloca Puig defeated Alejandro Vargas Aboy 2-6 6-4 6-3 in the Spain 2 4 qualifying round on clay. The upset overturned the form book — Alejandro Vargas Aboy came in leading the head-to-head 1–0. Juan Albert Viloca Puig claimed a first win over Alejandro Vargas Aboy in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-10-13 | Spain 4 1 | R32 | clay | Alejandro Vargas Aboy | 6-3 6-4 |