Paulino Alonso defeated Ruben Alvarenga 6-1 7-5 in the Peru Bolivia Masters 2 round of 32 on clay. The upset overturned the form book — Ruben Alvarenga came in leading the head-to-head 2–0. Paulino Alonso claimed a first win over Ruben Alvarenga in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1993-10-09 | Chile 2 Masters 3 | R32 | clay | Ruben Alvarenga | 6-4 6-2 |
| 1992-09-07 | Peru Bolivia Masters 1 | R16 | clay | Ruben Alvarenga | 6-3 6-3 |