Dawid Celt defeated Blazej Koniusz 6-3 6-4 in the Poland F6 round of 16 on clay. The upset overturned the form book — Blazej Koniusz came in leading the head-to-head 2–0, but Dawid Celt had been the form player, winning 3 of their last 6 on clay. Dawid Celt claimed a first win over Blazej Koniusz in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-06-07 | Warsaw | Q32 | clay | Blazej Koniusz | 2-6 6-3 6-3 |
| 2007-08-20 | Poland F7 | R32 | clay | Blazej Koniusz | 6-0 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.