Yong Il Yoon defeated Jae Sik Kim 6-3 7-6 in the Korea Masters 3 round of 16 on clay. The upset overturned the form book — Jae Sik Kim came in leading the head-to-head 1–0. Yong Il Yoon claimed a first win over Jae Sik Kim in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1993-05-15 | Korea Masters 1 | SF | hard | Jae Sik Kim | 6-2 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.