Jong Sam Chung defeated Dong Hyun Kim 6-3 1-6 6-1 in the Philippines Masters 2 round of 16 on hard. The upset overturned the form book — Dong Hyun Kim came in leading the head-to-head 3–1. Jong Sam Chung narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-07-30 | Chinese Taipei F1 | R32 | hard | Dong Hyun Kim | 6-3 6-3 |
| 2001-05-28 | Korea Rep F1 | R16 | clay | Dong Hyun Kim | 6-2 6-0 |
| 1997-05-24 | Korea Masters 4 | R16 | clay | Jong Sam Chung | 1-6 6-3 6-4 |
| 1996-05-11 | Korea Masters 3 | R32 | clay | Dong Hyun Kim | 7-5 6-2 |