Yong Il Yoon defeated Young Jun Kim 2-6 6-4 6-4 in the Korea Rep F3 round of 16 on hard. The result followed the form book — Yong Il Yoon came in leading the head-to-head 2–1. Yong Il Yoon extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-05-05 | Korea Rep F2 | QF | clay | Young Jun Kim | 6-4 6-3 |
| 2002-05-20 | Korea Rep F2 | R32 | clay | Yong Il Yoon | 5-7 6-3 5-0 |
| 1998-05-25 | Korea F1 | R16 | hard | Yong Il Yoon | 6-2 6-1 |