Jan Weinzierl defeated Bart Van Delft 6-1 6-2 in the Netherlands F3 round of 32 on clay. The upset overturned the form book — Bart Van Delft came in leading the head-to-head 2–0. Jan Weinzierl claimed a first win over Bart Van Delft in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-09-27 | Italy 3 Satellite 3 | R16 | clay | Bart Van Delft | 2-1 |
| 2003-08-25 | Netherlands F5 | R32 | clay | Bart Van Delft | 7-6(6) 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.