Ji Sung Nam advanced when Hyun Woo Nam retired 1-6 7-6 3-0 in the Korea F6 round of 32. Ji Sung Nam extended the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-09-07 | Korea F7 | R32 | clay | Hyun Woo Nam | 1-2 |
| 2014-04-21 | Korea F1 | R32 | hard | Ji Sung Nam | 6-4 1-0 |
| 2013-05-27 | Korea F4 | QF | hard | Ji Sung Nam | 7-5 7-6(1) |
| 2012-09-24 | Vietnam F6 | R32 | hard | Hyun Woo Nam | 6-4 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.