Ondrej Krstev defeated Jakub Paul 6-3 6-2 in the M15 Bad Salzdetfurth 1 round of 32 on carpet. The upset overturned the form book — Jakub Paul came in leading the head-to-head 1–0. Ondrej Krstev claimed a first win over Jakub Paul in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-10-05 | M25 Prague 2 | R32 | hard | Jakub Paul | 7-5 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.