Estadio: Court 1 Round: 26
| ITF Corea del Sur F6 | 2018/08/28 05:00 | Geun Jun Kim v Dong-Hak Sin | 2-6,3-6 |
| ITF Corea del Sur F5 | 2018/08/18 02:00 | Dong-Hak Sin v Sung Hun Kim | 5-7,1-6 |
| Challenger Gwangju | 2018/08/14 09:20 | Dong-Hak Sin v Maverick Banes | 2-6,1-6 |
| ITF Corea F2 | 2018/06/10 06:30 | Jin Sung Han v Dong-Hak Sin | 7-6,4-6,7-6 |
| ITF Corea F1 | 2018/06/07 01:00 | Cheong-Eui Kim v Dong-Hak Sin | 6-1,6-2 |
| ITF Corea F1 | 2018/06/05 03:50 | Dong-Hak Sin v Ju-Hae Moon | 6-1,6-4 |
| ITF Corea F1 | 2018/06/04 01:00 | Dong-Hak Sin v Jun Sang Park | 6-2,6-3 |
| ITF Corea F1 | 2018/06/03 02:00 | Dong-Hak Sin v Woo Hyeok Jang | 6-1,6-2 |
| ITF Corea del Sur F6 | 2018/08/29 03:00 | Sung Hun Kim v Min-Kyu Song | 2-6,2-6 |
| ITF China F10 | 2018/07/10 03:30 | Min-Kyu Song v Runhao Hua | 4-6,2-6 |
| ITF China F9 | 2018/07/07 07:30 | Yan Bai v Min-Kyu Song | 7-6,6-3 |
| ITF China F9 | 2018/07/06 03:00 | Min-Kyu Song v Shuichi Sekiguchi | 6-2,6-1 |
| ITF China F9 | 2018/07/05 03:00 | Min-Kyu Song v Jie Cui | 7-5,6-0 |
| ITF China F9 | 2018/07/03 09:10 | Yuya Kibi v Min-Kyu Song | 5-7,2-6 |
| ITF Corea F3 | 2018/06/20 02:30 | Yunseong Chung v Min-Kyu Song | 7-6,7-6 |
| ITF Corea F3 | 2018/06/18 01:00 | Min-Kyu Song v Michael Zhu | 6-4,6-2 |