Stadium: Court 1 Round: 27 Ground: Hardcourt outdoor
| ITF Korea F8 | 2016/09/10 06:00 | Yong-Kyu Lim v Ji Sung Nam | 6-0,6-3 |
| 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 Vietnam F3 | 2018/05/17 03:00 | Ji Sung Nam v Abhinav Sanjeev Shanmugam | 7-6,6-2 |
| ITF Vietnam F3 | 2018/05/16 05:30 | Rio Noguchi v Ji Sung Nam | 3-6,1-6 |
| ITF Vietnam F3 | 2018/05/15 04:55 | Nicholas Bybel v Ji Sung Nam | 4-6,2-6 |
| ITF Vietnam F2 | 2018/05/13 04:00 | Rio Noguchi v Ji Sung Nam | 7-6,6-3 |
| ITF Vietnam F2 | 2018/05/12 04:45 | Gengo Kikuchi v Ji Sung Nam | 4-6,3-6 |
| ITF Korea F1 | 2018/06/07 02:35 | Minjong Park v Yong-Kyu Lim | 5-7,1-6 |
| ITF Korea F1 | 2018/06/06 03:20 | Yong-Kyu Lim v Min-Kyu Song | 4-6,6-4,6-1 |
| Challenger Busan Qual | 2018/05/12 04:05 | Yong-Kyu Lim v Wishaya Trongcharoenchaikul | 7-6,6-7,2-6 |
| Challenger Gimcheon Qual | 2018/05/06 04:30 | Yong-Kyu Lim v Wishaya Trongcharoenchaikul | 6-2,6-7,4-6 |
| Challenger Gimcheon Qual | 2018/05/05 01:30 | Yong-Kyu Lim v Cheng-Peng Hsieh | 6-4,6-3 |
| Challenger Seoul Qual | 2018/04/29 04:55 | Renta Tokuda v Yong-Kyu Lim | 6-4,6-4 |
| Challenger Seoul Qual | 2018/04/28 04:30 | Yong-Kyu Lim v Frederik Nielsen | 6-4,6-1 |
| ITF Korea F5 | 2017/06/29 01:30 | Seong-Gook Oh v Yong-Kyu Lim | 6-4,6-4 |