Ki Su Jung defeated Jung Hoon Kim 6-1 4-6 7-5 in the Korea F4 q32 on hard. The result followed the form book — Ki Su Jung came in leading the head-to-head 2–0. Ki Su Jung extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-06-10 | Korea F6 | Q32 | hard | Ki Su Jung | 6-1 6-1 |
| 2013-04-29 | Korea F1 | Q32 | hard | Ki Su Jung | 6-4 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.