Oscar Martinez Dieguez defeated Ivan Rodrigo 6-2 6-7 6-3 in the Spain 5 Masters 3 round of 16 on clay. The upset overturned the form book — Ivan Rodrigo came in leading the head-to-head 2–1, but Oscar Martinez Dieguez had been the form player, winning 4 of their last 7 on clay. Oscar Martinez Dieguez narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-02-27 | Spain 3 Masters 2 | R16 | clay | Ivan Rodrigo | 6-4 6-3 |
| 1997-10-17 | Spain 9 Masters 1 | R32 | clay | Ivan Rodrigo | 3-6 7-5 6-3 |
| 1997-07-04 | Spain 6 Masters 1 | SF | clay | Oscar Martinez Dieguez | 1-6 7-5 6-2 |