Bastian Gronefeld defeated Thomas Holzer 6-7 6-2 6-3 in the Austria F2 round of 32 on clay. The upset overturned the form book — Thomas Holzer came in leading the head-to-head 1–0. Bastian Gronefeld claimed a first win over Thomas Holzer in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-08-23 | Germany F13 | R32 | clay | Thomas Holzer | 6-4 6-1 |