Oh Hee Kwon defeated Cheong Eui Kim 3-6 6-3 6-4 in the Korea F3 round of 16 on hard. The upset overturned the form book — Cheong Eui Kim came in leading the head-to-head 5–0, but Oh Hee Kwon had been the form player, winning 5 of their last 7 on hard. Oh Hee Kwon claimed a first win over Cheong Eui Kim in six meetings, narrowing the head-to-head to 5–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-06-20 | M15 Gimcheon 2 | R16 | hard | Cheong Eui Kim | 6-3 3-6 6-2 |
| 2019-06-06 | M15 Daegu 1 | R16 | hard | Cheong Eui Kim | 4-6 6-3 6-0 |
| 2014-06-30 | Korea F8 | QF | hard | Cheong Eui Kim | 6-0 6-1 |
| 2014-06-02 | Korea F4 | R16 | hard | Cheong Eui Kim | 6-2 6-1 |
| 2013-06-24 | Korea F8 | R16 | hard | Cheong Eui Kim | 7-5 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.