Daniel Koellerer defeated Marko Neunteibl 6-3 6-2 in the Austria F1 semi-final on clay. The upset overturned the form book — Marko Neunteibl came in leading the head-to-head 1–0, but Daniel Koellerer had been the form player, winning 9 of their last 10 on clay. Daniel Koellerer claimed a first win over Marko Neunteibl in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-07-14 | Austria F2 | F | clay | Marko Neunteibl | 3-6 6-4 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.