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