Stadium: Court 3 Round: 29
| ITF Korea F2 | 2018/06/16 01:00 | Kim, Cheong-Eui v Nam, Ji Sung | 4-6,2-6 |
| ITF Korea F2 | 2018/06/15 01:00 | Hong, Seong Chan v Nam, Ji Sung | 5-7,3-6 |
| ITF Korea F2 | 2018/06/14 01:00 | Jeamoon Lee v Nam, Ji Sung | 2-6,0-6 |
| ITF Korea F2 | 2018/06/13 06:50 | Kim, Young Seok v Nam, Ji Sung | 6-7,0-6 |
| ITF Korea F1 | 2018/06/08 02:00 | Nam, Ji Sung v Lim, Yong-Kyu | 1-6,2-6 |
| ITF Korea F1 | 2018/06/06 02:15 | Nam, Ji Sung v Yoo, Daniel | 6-4,6-3 |
| ITF Vietnam F3 | 2018/05/20 03:00 | Nam, Ji Sung v Isarow, Pruchya | 6-4,6-2 |
| ITF Vietnam F3 | 2018/05/18 03:00 | Son, Ji Hoon v Nam, Ji Sung | 1-6,2-6 |
| ITF Korea F2 | 2018/06/16 02:40 | Jae Hwan Kim v Yunseong Chung | 4-6,7-5,2-6 |
| ITF Korea F2 | 2018/06/15 03:20 | Oh, Chan-Yeong v Yunseong Chung | 6-7,6-3,4-6 |
| ITF Korea F2 | 2018/06/14 03:45 | Moritani, Soichiro v Yunseong Chung | 6-7,0-6 |
| ITF Korea F2 | 2018/06/12 01:00 | Larriere, Clement v Yunseong Chung | 3-6,4-6 |
| ITF China F7 | 2018/06/01 06:15 | Gao, Xin v Yunseong Chung | 6-0,6-7,6-3 |
| ITF China F7 | 2018/05/31 04:30 | Lo, Chien Hsun v Yunseong Chung | 2-6,7-5,5-7 |
| ITF China F7 | 2018/05/29 05:30 | Zhenxiong Dong v Yunseong Chung | 2-6,1-6 |
| Challenger - Busan | 2018/05/15 03:25 | Ebden, Matthew v Yunseong Chung | 6-3,3-6,6-3 |