Hee Seok Chung defeated Oh Hee Kwon 5-7 7-6 6-2 in the Korea Rep F2 semi-final on clay. The upset overturned the form book — Oh Hee Kwon came in leading the head-to-head 2–1. Hee Seok Chung narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-08-08 | Indonesia F2 | F | hard | Oh Hee Kwon | 7-6(4) 6-1 |
| 2005-05-02 | Korea Rep F1 | R16 | hard | Oh Hee Kwon | 7-6(1) 6-2 |
| 2003-04-28 | Korea Rep F1 | SF | clay | Hee Seok Chung | 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.