Louk Sorensen defeated Radoslav Lukaev 6-2 6-4 in the Bulgaria 1 4 qualifying round on clay. The upset overturned the form book — Radoslav Lukaev came in leading the head-to-head 1–0. Louk Sorensen claimed a first win over Radoslav Lukaev in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-05-02 | Bulgaria 1 1 | SF | clay | Radoslav Lukaev | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.