Patty Van Acker defeated Marketa Kochta 6-2 6-1 in the Lenzerheide 25K round of 32 on clay. The upset overturned the form book — Marketa Kochta came in leading the head-to-head 1–0. Patty Van Acker claimed a first win over Marketa Kochta in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-06-07 | Galatina 10K | R32 | clay | Marketa Kochta | 6-4 7-6 |