Melvyn Op Der Heijde defeated Jan Weinzierl 7-6 6-1 in the Netherlands F3 round of 16 on clay. The upset overturned the form book — Jan Weinzierl came in leading the head-to-head 2–0. Melvyn Op Der Heijde claimed a first win over Jan Weinzierl in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-06-23 | Netherlands F2 | R16 | clay | Jan Weinzierl | 6-3 6-1 |
| 2001-08-27 | Netherlands F2 | SF | clay | Jan Weinzierl | 6-7(13) 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.