Kevin Deden defeated Blazej Koniusz 6-2 4-6 6-1 in the Poland F5 qualifying round on clay. The upset overturned the form book — Blazej Koniusz came in leading the head-to-head 1–0. Kevin Deden claimed a first win over Blazej Koniusz in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-05-19 | Poland F2 | R16 | clay | Blazej Koniusz | 2-6 7-6(5) 4-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.