Kentaro Masuda defeated Ezequiel Velez 6-2 1-6 6-2 in the Spain 4 Masters 1 round of 32 on clay. Kentaro Masuda extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2002-07-29 | Spain F8 | QF | clay | Kentaro Masuda | 6-2 |
| 1999-07-05 | Spain F1 | R32 | clay | Ezequiel Velez | 6-2 6-7 6-2 |