Javier Perez Vazquez defeated Pedro Nieto 6-2 6-4 in the Spain 5 Masters 3 round of 16 on hard. The upset overturned the form book — Pedro Nieto came in leading the head-to-head 1–0. Javier Perez Vazquez claimed a first win over Pedro Nieto in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-08-31 | Spain F8 | R32 | clay | Pedro Nieto | 6-7 6-4 6-2 |