Yong Il Yoon defeated Wei Ju Chen 6-2 6-1 in the Japan F5 round of 16 on hard. The result followed the form book — Yong Il Yoon came in leading the head-to-head 1–0. Yong Il Yoon extended the head-to-head to 2–0.
Yoon Y. took it in straight sets.
Yong Il Yoon beat Wei Ju Chen 6-2 6-1. Umpiry, "Yong Il Yoon vs Wei Ju Chen — Japan F5 Round of 16", https://umpiry.com/match/2000-05-15/chen-vs-yoon-japan-f5-r16?utm_source=cite (as of 15 May 2000).