Franz Stauder defeated Rogier Wassen 3-6 6-2 6-4 in the Portugal 4 2 round of 16 on clay. The upset overturned the form book — Rogier Wassen came in leading the head-to-head 2–0, but Franz Stauder had been the form player, winning 4 of their last 5 on clay. Franz Stauder claimed a first win over Rogier Wassen in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-10-29 | Portugal 4 1 | R32 | clay | Rogier Wassen | 7-5 6-2 |
| 1996-11-23 | Portugal 4 Masters 4 | R16 | clay | Rogier Wassen | 6-4 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.