Alexander Flock defeated Bastian Gronefeld 6-4 6-1 in the Germany F9 round of 32 on clay. The upset overturned the form book — Bastian Gronefeld came in leading the head-to-head 1–0. Alexander Flock claimed a first win over Bastian Gronefeld in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-09-13 | Germany F16 | R16 | clay | Bastian Gronefeld | 6-3 6-4 |