Marcella Koek defeated Romana Janshen 6-2 6-3 in the Vlaardingen 10K round of 32 on clay. The upset overturned the form book — Romana Janshen came in leading the head-to-head 1–0. Marcella Koek claimed a first win over Romana Janshen in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-06-11 | Annaba 10K | QF | clay | Romana Janshen | 6-1 |