Jakub Prachar defeated Josef Vagner 6-3 6-2 in the M25 Jablonec nad Nisou 1 q64 on clay. The upset overturned the form book — Josef Vagner came in leading the head-to-head 1–0. Jakub Prachar claimed a first win over Josef Vagner in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2022-08-21 | M15 Bad Waltersdorf 2 | Q64 | clay | Josef Vagner | 5-7 6-1 10-8 |