Melvyn Op Der Heijde defeated Gordon Bergraaf 6-3 6-4 in the Netherlands Masters 1 round of 16 on clay. The upset overturned the form book — Gordon Bergraaf came in leading the head-to-head 1–0. Melvyn Op Der Heijde claimed a first win over Gordon Bergraaf in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-06-14 | Netherlands Masters 3 | R16 | clay | Gordon Bergraaf | 2-6 6-2 6-3 |