Lisanne Balk defeated Annette Kolb 6-4 6-3 in the Montechoro 10K semi-final on hard. The upset overturned the form book — Annette Kolb came in leading the head-to-head 2–0. Lisanne Balk claimed a first win over Annette Kolb in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-04-18 | Porto Santo 3 10K | QF | hard | Annette Kolb | 6-3 6-1 |
| 2005-02-14 | Portimao 10K | QF | hard | Annette Kolb | 6-2 6-2 |