Joanna Sakowicz Kostecka defeated Andrea Hlavackova 6-3 6-3 in the Jersey 25K round of 16 on hard. The result followed the form book — Joanna Sakowicz Kostecka came in leading the head-to-head 2–0. Joanna Sakowicz Kostecka extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-10-08 | Jersey 25K | R16 | hard | Joanna Sakowicz Kostecka | 6-4 6-0 |
| 2005-11-21 | Opole 25K | SF | carpet | Joanna Sakowicz Kostecka | 6-3 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.