Seiko Okamoto defeated Sachie Umehara 5-4 4-1 4-5 1-4 4-1 in the Kofu Open qualifying round on carpet. The upset overturned the form book — Sachie Umehara came in leading the head-to-head 1–0. Seiko Okamoto claimed a first win over Sachie Umehara in two meetings, levelling the head-to-head at 1–1.
Okamoto S. came through in five sets.
Carpet: Okamoto S. leads 1–0 · Hard: Umehara S. leads 1–0
Seiko Okamoto beat Sachie Umehara 5-4(1) 4-1 4-5(5) 1-4 4-1. Umpiry, "Seiko Okamoto vs Sachie Umehara — Kofu Open Qualifying Round", https://umpiry.com/match/2000-11-20/okamoto-vs-umehara-kofu-open-qf?utm_source=cite (as of 20 November 2000).