Joanna Sakowicz Kostecka defeated Daniela Kix 6-2 4-6 6-1 in the Bolton 25K round of 16 on hard. The upset overturned the form book — Daniela Kix came in leading the head-to-head 2–0. Joanna Sakowicz Kostecka claimed a first win over Daniela Kix in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-11-14 | Pruhonice 25K | QF | hard | Daniela Kix | 7-6(2) 6-2 |
| 2005-10-10 | Jersey 25K | SF | hard | Daniela Kix | 7-5 4-6 6-4 |