Stadium: Court 16 Round: 62
| Challenger Gwangju | 2018/08/14 09:20 | Dong-Hak Sin v Maverick Banes | 2-6,1-6 |
| ITF Korea F2 | 2018/06/10 06:30 | Jin Sung Han v Dong-Hak Sin | 7-6,4-6,7-6 |
| ITF Korea F1 | 2018/06/07 01:00 | Cheong-Eui Kim v Dong-Hak Sin | 6-1,6-2 |
| ITF Korea F1 | 2018/06/05 03:50 | Dong-Hak Sin v Ju-Hae Moon | 6-1,6-4 |
| ITF Korea F1 | 2018/06/04 01:00 | Dong-Hak Sin v Jun Sang Park | 6-2,6-3 |
| ITF Korea F1 | 2018/06/03 02:00 | Dong-Hak Sin v Woo Hyeok Jang | 6-1,6-2 |
| Challenger Gwangju | 2017/09/19 01:30 | Dong-Hak Sin v Matthew Ebden | 5-7,3-6 |
| ITF Korea F5 | 2017/06/28 01:00 | Seong Chan Hong v Dong-Hak Sin | 7-5,6-3 |
| ITF Korea F4 | 2018/08/13 03:00 | Sung Hun Kim v Jae-Won Choi | 4-6,6-7 |
| ITF Korea F3 Qual | 2018/06/16 03:30 | Ku Keon Kang v Sung Hun Kim | 6-4,7-5 |
| ITF Korea F2 | 2018/06/10 05:00 | Sung Hun Kim v Loic Ratsaratany | 4-6,6-4,3-6 |
| ITF Korea F2 | 2018/06/09 01:00 | Woo Hyeok Jang v Sung Hun Kim | 2-6,2-6 |
| ITF Korea F1 | 2018/06/02 01:00 | Seong Jae Han v Sung Hun Kim | 7-5,6-2 |
| ITF Korea F3 Qual | 2017/06/11 04:30 | Hyun-Joon Kim v Sung Hun Kim | 6-3,6-4 |
| ITF Korea F2 Qual | 2017/06/03 03:00 | Yu-Seob Kim v Sung Hun Kim | 6-1,6-4 |
| ITF Korea F1 Qual | 2017/05/28 01:00 | Geon Ju Shin v Sung Hun Kim | 6-2,6-2 |