Orest Tereshchuk defeated Dmitri Sitak 6-4 6-0 in the Tunisia F5 qualifying round on hard. The upset overturned the form book — Dmitri Sitak came in leading the head-to-head 1–0, but Orest Tereshchuk had been the form player, winning 6 of their last 8 on hard. Orest Tereshchuk claimed a first win over Dmitri Sitak in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-08 | Uzbekistan F4 | R16 | hard | Dmitri Sitak | 6-3 6-2 |