Joanna Sakowicz Kostecka defeated Katerina Bohmova 1-6 6-1 6-4 in the Jersey 25K qualifying round on hard. The upset overturned the form book — Katerina Bohmova came in leading the head-to-head 1–0. Joanna Sakowicz Kostecka claimed a first win over Katerina Bohmova in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-06-05 | Prostejov 75K | R16 | clay | Katerina Bohmova | 1-6 7-5 6-4 |