Min Hyoek Cho defeated Hong Chung 6-4 3-6 7-5 in the Korea F4 round of 16 on hard. The upset overturned the form book — Hong Chung came in leading the head-to-head 3–2, but Min Hyoek Cho had been the form player, winning 2 of their last 4 on hard. Min Hyoek Cho narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-06-19 | Korea F4 | QF | hard | Hong Chung | 6-1 6-1 |
| 2016-08-29 | Korea F7 | F | clay | Hong Chung | 6-3 4-6 6-4 |
| 2015-08-24 | Korea F5 | F | hard | Hong Chung | 6-3 6-4 |
| 2014-04-28 | Korea F2 | R32 | hard | Min Hyoek Cho | 6-3 6-2 |
| 2013-04-29 | Korea F1 | R16 | hard | Min Hyoek Cho | 6-1 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.