Magda Mihalache defeated Libuse Prusova 7-6 6-2 in the Petange 50K round of 32 on clay. The upset overturned the form book — Libuse Prusova came in leading the head-to-head 1–0. Magda Mihalache claimed a first win over Libuse Prusova in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-05-24 | Warsaw 25K | QF | clay | Libuse Prusova | 6-4 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.