Juan Antonio Saiz Panadero defeated Oscar Martinez Dieguez 7-6 7-5 in the Spain 3 Masters 3 round of 32 on clay. The upset overturned the form book — Oscar Martinez Dieguez came in leading the head-to-head 4–0. Juan Antonio Saiz Panadero claimed a first win over Oscar Martinez Dieguez in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-04-07 | Spain 4 4 | R16 | clay | Oscar Martinez Dieguez | 7-6(4) 4-6 6-3 |
| 1999-07-12 | Spain F2 | R16 | clay | Oscar Martinez Dieguez | 7-6 6-4 |
| 1997-10-17 | Spain 9 Masters 4 | R16 | clay | Oscar Martinez Dieguez | 5-7 6-4 6-1 |
| 1997-05-09 | Spain 4 Masters 4 | R16 | clay | Oscar Martinez Dieguez | 6-3 7-5 |