Didac Perez defeated Oscar Martinez Dieguez 7-5 6-2 in the Spain 7 Masters 2 round of 32 on clay. The upset overturned the form book — Oscar Martinez Dieguez came in leading the head-to-head 1–0. Didac Perez claimed a first win over Oscar Martinez Dieguez in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-02-26 | Spain 3 Masters 4 | R16 | clay | Oscar Martinez Dieguez | 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.