Yong Il Yoon defeated Hyeong Keun Song 7-5 6-3 in the Japan Masters 3 semi-final on hard. The result followed the form book — Yong Il Yoon came in leading the head-to-head 5–0. Yong Il Yoon extended the head-to-head to 6–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-05-24 | Korea Masters 2 | QF | clay | Yong Il Yoon | 6-3 6-3 |
| 1997-05-24 | Korea Masters 3 | R32 | clay | Yong Il Yoon | 2-6 7-5 6-1 |
| 1994-05-14 | Korea Masters 1 | SF | clay | Yong Il Yoon | 6-3 1-6 6-1 |
| 1994-05-14 | Korea Masters 4 | QF | clay | Yong Il Yoon | 6-4 6-2 |
| 1993-05-15 | Korea Masters 4 | F | hard | Yong Il Yoon | 6-3 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.