Christian Schaffkes defeated Wojtek Kowalski 7-6 6-3 in the Netherlands Masters 3 qualifying round on clay. The upset overturned the form book — Wojtek Kowalski came in leading the head-to-head 1–0. Christian Schaffkes claimed a first win over Wojtek Kowalski in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1992-06-22 | Netherlands Masters 4 | R16 | clay | Wojtek Kowalski | 6-2 6-1 |