Carlos Castellanos advanced when David Salvador Estepa retired 5-2 in the Spain 5 Masters 3 qualifying round. Carlos Castellanos claimed a first win over David Salvador Estepa in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-05-08 | Spain 5 Masters 2 | SF | clay | David Salvador Estepa | 4-6 6-2 6-4 |
| 1998-02-27 | Spain 3 Masters 2 | R16 | clay | David Salvador Estepa | 1-6 6-2 6-3 |