Daniel Kumlin defeated Bjorn Rehnquist 7-6 3-6 6-1 in the Bastad q16 on clay. The upset overturned the form book — Bjorn Rehnquist came in leading the head-to-head 1–0. Daniel Kumlin claimed a first win over Bjorn Rehnquist in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-09-13 | Sweden F1 | R32 | hard | Bjorn Rehnquist | 6-2 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.