Boy Wijnmalen defeated Lauri Kiiski 6-4 6-2 in the Romania F5 round of 32 on clay. The upset overturned the form book — Lauri Kiiski came in leading the head-to-head 1–0. Boy Wijnmalen claimed a first win over Lauri Kiiski in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-09-20 | Sweden F2 | R32 | hard | Lauri Kiiski | 7-5 2-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.