Bianca Koch defeated Barbara Kvelstein 6-0 6-2 in the Stuttgart Vaihingen 25K qualifying round of 32 on clay. The upset overturned the form book — Barbara Kvelstein came in leading the head-to-head 1–0, but Bianca Koch had been the form player, winning 2 of their last 5 on clay. Bianca Koch claimed a first win over Barbara Kvelstein in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-06-15 | Gausdal 10K | R32 | hard | Barbara Kvelstein | 6-3 6-4 |