Glenny Schaap defeated Filip Dewulf 6-3 6-4 in the Netherlands Masters 2 round of 16 on clay. The upset overturned the form book — Filip Dewulf came in leading the head-to-head 1–0. Glenny Schaap claimed a first win over Filip Dewulf in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-06-24 | Netherlands Masters 4 | QF | clay | Filip Dewulf | 3-6 7-5 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.