Martin Verkerk defeated Melvyn Op Der Heijde 6-3 6-1 in the Germany F2 round of 32 on clay. The upset overturned the form book — Melvyn Op Der Heijde came in leading the head-to-head 1–0, but Martin Verkerk had been the form player, winning 5 of their last 7 on clay. Martin Verkerk claimed a first win over Melvyn Op Der Heijde in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-05-11 | Italy F7 | SF | clay | Melvyn Op Der Heijde | 6-4 1-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.