Jan Kuncik defeated Blazej Koniusz 6-3 7-6 in the Czech Republic F2 round of 16 on clay. The upset overturned the form book — Blazej Koniusz came in leading the head-to-head 2–0. Jan Kuncik claimed a first win over Blazej Koniusz in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-11-18 | Czech Republic F6 | R32 | carpet | Blazej Koniusz | 6-2 3-6 7-5 |
| 2010-06-07 | Poland F4 | R16 | clay | Blazej Koniusz | 6-2 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.