Daniel Kumlin defeated Alexander Sadecky 7-5 3-6 6-1 in the Germany F20 round of 16 on hard. The upset overturned the form book — Alexander Sadecky came in leading the head-to-head 1–0. Daniel Kumlin claimed a first win over Alexander Sadecky in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-10-08 | Germany F19 | R32 | hard | Alexander Sadecky | 7-6(5) 6-7(9) 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.