Frederik Nielsen defeated Sadik Kadir 6-3 6-2 in the Ireland F2 round of 32 on carpet. The upset overturned the form book — Sadik Kadir came in leading the head-to-head 1–0. Frederik Nielsen claimed a first win over Sadik Kadir in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-05-31 | Poland F2 | QF | clay | Sadik Kadir | 6-3 3-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.