Sang Hoon Lee defeated Hee Seok Chung 3-6 7-5 6-3 in the Korea F1 round of 32 on clay. The upset overturned the form book — Hee Seok Chung came in leading the head-to-head 1–0. Sang Hoon Lee claimed a first win over Hee Seok Chung in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-05-28 | Korea Rep F1 | R16 | clay | Hee Seok Chung | 6-4 6-4 |