Zuzana Valekova defeated Tatiana Kovaltchouk 6-0 2-6 6-0 in the Sibenik 10K qualifying round on clay. The upset overturned the form book — Tatiana Kovaltchouk came in leading the head-to-head 1–0. Zuzana Valekova claimed a first win over Tatiana Kovaltchouk in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-10-04 | Batumi 50K | R32 | carpet | Tatiana Kovaltchouk | 1-6 6-4 6-3 |