Timo Nieminen defeated Dawid Olejniczak 6-7 6-3 6-4 in the Finland F1 qualifying round on clay. The upset overturned the form book — Dawid Olejniczak came in leading the head-to-head 2–0. Timo Nieminen claimed a first win over Dawid Olejniczak in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-10-04 | Mexico F12 | SF | hard | Dawid Olejniczak | 6-2 6-3 |
| 2002-05-20 | Poland F2 | R32 | clay | Dawid Olejniczak | 1-6 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.