Sergei Krotiouk defeated Nickolai Dyachok 6-3 4-6 6-1 in the Ukraine F2 round of 32 on clay. The upset overturned the form book — Nickolai Dyachok came in leading the head-to-head 1–0. Sergei Krotiouk claimed a first win over Nickolai Dyachok in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-07-05 | Ukraine F3 | R32 | clay | Nickolai Dyachok | 6-3 6-2 |