Oscar Martinez Dieguez defeated Mark Joachim 6-3 6-2 in the Spain 3 Masters 3 round of 32 on clay. The result followed the form book — Oscar Martinez Dieguez came in leading the head-to-head 1–0. Oscar Martinez Dieguez extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-04-09 | Spain 4 Masters 2 | R16 | clay | Oscar Martinez Dieguez | 6-3 6-1 |