Antoaneta Pandjerova defeated Zuzana Valekova 6-4 7-5 in the Sofia 25K qualifying round on clay. The upset overturned the form book — Zuzana Valekova came in leading the head-to-head 1–0, but Antoaneta Pandjerova had been the form player, winning 4 of their last 6 on clay. Antoaneta Pandjerova claimed a first win over Zuzana Valekova in two meetings, levelling the head-to-head at 1–1.
Pandjerova A. took it in straight sets.
Antoaneta Pandjerova beat Zuzana Valekova 6-4 7-5. Umpiry, "Antoaneta Pandjerova vs Zuzana Valekova — Sofia 25K Qualifying Round", https://umpiry.com/match/2000-09-11/pandjerova-vs-valekova-sofia-25k-qf?utm_source=cite (as of 11 September 2000).