Ji Sung Nam defeated Jung Woong Na 7-5 6-2 in the Korea F1 round of 16 on hard. Ji Sung Nam extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-07-04 | Korea F4 | R16 | hard | Ji Sung Nam | 7-5 4-6 6-2 |
| 2015-08-17 | Korea F4 | QF | hard | Jung Woong Na | 7-5 2-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.