Alejandro Aramburu defeated Ruben Alvarenga 6-4 6-3 in the Uruguay Paraguay Masters 2 round of 32 on clay. The upset overturned the form book — Ruben Alvarenga came in leading the head-to-head 1–0, but Alejandro Aramburu had been the form player, winning 2 of their last 8 on clay. Alejandro Aramburu claimed a first win over Ruben Alvarenga in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1993-11-06 | Uruguay Paraguay Masters 1 | R16 | clay | Ruben Alvarenga | 6-2 6-2 |