Stefan Wauters defeated Jan Weinzierl 6-4 6-2 in the Hungary F4 round of 32 on clay. The upset overturned the form book — Jan Weinzierl came in leading the head-to-head 3–0. Stefan Wauters claimed a first win over Jan Weinzierl in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-01-29 | France F4 | R16 | clay | Jan Weinzierl | 7-6(2) 3-6 6-3 |
| 2000-07-17 | Germany F8 | R32 | clay | Jan Weinzierl | 4-6 6-2 6-0 |
| 1999-08-09 | Belgium F1 | R16 | clay | Jan Weinzierl | 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.