Javier Taborga defeated Juan Martin Aranguren 6-1 6-2 in the Ecuador F3 qualifying round on hard. The upset overturned the form book — Juan Martin Aranguren came in leading the head-to-head 1–0. Javier Taborga claimed a first win over Juan Martin Aranguren in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-09-01 | Argentina F3 | R32 | clay | Juan Martin Aranguren | 6-3 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.