Yong Il Yoon defeated Cory Guy 7-6 6-4 in the Japan F5 qualifying round 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.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-05-01 | China F2 | R16 | hard | Yong Il Yoon | 6-4 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.