Juan Martin Aranguren defeated Javier Taborga 6-3 6-1 in the Argentina F3 round of 32 on clay. The upset overturned the form book — Javier Taborga came in leading the head-to-head 2–0, but Juan Martin Aranguren had been the form player, winning 3 of their last 6 on clay. Juan Martin Aranguren claimed a first win over Javier Taborga in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-09-08 | Bolivia F1 | R32 | clay | Javier Taborga | 6-3 6-4 |
| 2003-07-21 | Ecuador F3 | QF | hard | Javier Taborga | 6-1 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.