Aleksandar Grubin defeated Stefan Wiespeiner 7-5 2-6 6-2 in the Turkey 1 3 round of 32 on clay. The upset overturned the form book — Stefan Wiespeiner came in leading the head-to-head 1–0. Aleksandar Grubin claimed a first win over Stefan Wiespeiner in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-22 | Bosnia & Herzegovina F2 | QF | clay | Stefan Wiespeiner | 6-2 6-4 |