Pirmin Haenle defeated Roel Oostdam 6-4 4-6 6-3 in the Romania F11 round of 32 on clay. The upset overturned the form book — Roel Oostdam came in leading the head-to-head 1–0. Pirmin Haenle claimed a first win over Roel Oostdam in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-06-23 | Romania F9 | R32 | clay | Roel Oostdam | 7-5 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.