Ondrej Valek defeated Vojtech Vlkovsky 6-4 6-4 in the M15 Opava 1 q16 on carpet. The result followed the form book — Ondrej Valek came in leading the head-to-head 1–0. Ondrej Valek extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-08-15 | M25 Prostejov 1 | Q32 | clay | Ondrej Valek | 4-6 6-4 11-9 |