Katerina Bohmova defeated Joanna Sakowicz Kostecka 1-6 7-5 6-4 in the Prostejov 75K round of 16 on clay. The upset overturned the form book — Joanna Sakowicz Kostecka came in leading the head-to-head 1–0. Katerina Bohmova claimed a first win over Joanna Sakowicz Kostecka in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-01-30 | Jersey 25K | QF | hard | Joanna Sakowicz Kostecka | 1-6 6-1 6-4 |