Sung Ho Im defeated Hee Seok Chung 7-5 6-3 in the Korea Rep F4 round of 32 on clay. The upset overturned the form book — Hee Seok Chung came in leading the head-to-head 2–0. Sung Ho Im claimed a first win over Hee Seok Chung in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-04-28 | Korea Rep F1 | R32 | clay | Hee Seok Chung | 6-7(5) 6-4 6-4 |
| 2001-05-28 | Korea Rep F1 | R32 | clay | Hee Seok Chung | 6-3 6-0 |