Joanna Sakowicz Kostecka defeated Raluca Ciochina 1-6 6-2 6-1 in the Warsaw 10K final on clay. The upset overturned the form book — Raluca Ciochina came in leading the head-to-head 1–0. Joanna Sakowicz Kostecka claimed a first win over Raluca Ciochina in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-05-19 | Fed Cup G1 RRC: POL vs ROU | RR | clay | Raluca Ciochina | 6-2 6-0 |