Zuzana Ondraskova defeated Zuzana Hejdova 6-4 6-1 in the Prostejov 25K round of 32 on clay. The upset overturned the form book — Zuzana Hejdova came in leading the head-to-head 1–0. Zuzana Ondraskova claimed a first win over Zuzana Hejdova in two meetings, levelling the head-to-head at 1–1.
Ondraskova Z. took it in straight sets.
Zuzana Ondraskova beat Zuzana Hejdova 6-4 6-1. Umpiry, "Zuzana Ondraskova vs Zuzana Hejdova — Prostejov 25K Round of 32", https://umpiry.com/match/2000-04-17/hejdova-vs-ondraskova-prostejov-25k-r32?utm_source=cite (as of 17 April 2000).