Min Kyu Song defeated Hong Chung 6-4 6-4 in the Gwangju CH qualifying round 1 on hard. The upset overturned the form book — Hong Chung came in leading the head-to-head 3–0, defending last year's round of 32. Min Kyu Song claimed a first win over Hong Chung in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-06-19 | Korea F4 | SF | hard | Hong Chung | 6-2 6-2 |
| 2014-08-25 | Korea F12 | SF | clay | Hong Chung | 4-6 6-3 4-0 |
| 2014-06-16 | Korea F6 | R16 | hard | Hong Chung | 6-4 3-6 6-0 |
Averages over each player's completed matches in the selected window (24 vs 28). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About