Nickolai Dyachok defeated Sergei Krotiouk 6-3 6-2 in the Ukraine F3 round of 32 on clay. The upset overturned the form book — Sergei Krotiouk came in leading the head-to-head 1–0. Nickolai Dyachok claimed a first win over Sergei Krotiouk in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-10-03 | Ukraine F2 | R32 | clay | Sergei Krotiouk | 6-3 4-6 6-1 |