Sandra Martinovic defeated Sabine Klaschka 2-6 7-5 7-6 in the Stuttgart 10K round of 32 on hard. The upset overturned the form book — Sabine Klaschka came in leading the head-to-head 3–0. Sandra Martinovic claimed a first win over Sabine Klaschka in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-06-26 | Padova 25K | R32 | clay | Sabine Klaschka | 6-1 6-3 |
| 2006-02-20 | Biberach 25K | R16 | hard | Sabine Klaschka | 7-6(3) 6-1 |
| 2006-01-16 | Oberhaching 10K | QF | carpet | Sabine Klaschka | 6-7(1) 6-4 6-0 |