Ki Su Jung defeated Jae Won Yun 6-1 7-6 in the Korea F4 q64 on hard. The result followed the form book — Ki Su Jung came in leading the head-to-head 1–0. Ki Su Jung extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-04-29 | Korea F1 | Q16 | hard | Ki Su Jung | 6-4 4-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.