Yong Il Yoon defeated Hee Sung Chung 3-6 6-1 6-3 in the Korea F1 qualifying round on clay. The result followed the form book — Yong Il Yoon came in leading the head-to-head 2–0. Yong Il Yoon extended the head-to-head to 3–0.
Yoon Y. came through in three sets.
Yong Il Yoon beat Hee Sung Chung 3-6 6-1 6-3. Umpiry, "Yong Il Yoon vs Hee Sung Chung — Korea F1 Qualifying Round", https://umpiry.com/match/2000-05-22/chung-vs-yoon-korea-f1-qf?utm_source=cite (as of 22 May 2000).