Stadium: Court 3 Round: 44 Ground: Hardcourt outdoor
| ITF Thailand F12 Qual | 2017/12/11 04:15 | Sung Jun Park v Colin Sinclair | 3-6,4-6 |
| ITF Thailand F12 Qual | 2017/12/10 03:00 | Jumpei Yamasaki v Sung Jun Park | 4-6,5-7 |
| ITF Thailand F12 Qual | 2017/12/09 05:30 | Cheong Hwi Kim v Sung Jun Park | 1-6,1-6 |
| ITF Korea F5 | 2017/06/28 06:40 | Hong Chung v Sung Jun Park | 6-0,1-6,6-0 |
| ITF Korea F5 | 2017/06/27 01:30 | Ho-Min Kang v Sung Jun Park | 4-6,2-6 |
| ITF Korea F5 | 2017/06/26 03:30 | Byeonghun Kim v Sung Jun Park | 0-6,6-3,0-6 |
| ITF Korea F4 | 2017/06/20 02:20 | Jung-Woong Na v Sung Jun Park | 6-4,6-3 |
| ITF Korea F4 | 2017/06/19 01:00 | Sung Jun Park v Ho-Min Kang | 6-0,6-0 |
| Challenger Gwangju Qual | 2017/09/16 01:30 | Seoung Hun Lee v Dae-Hee Lee | 4-6,3-6 |
| ITF Korea F5 | 2017/06/26 01:30 | Seong Chan Hong v Seoung Hun Lee | 6-3,6-0 |
| ITF Korea F4 | 2017/06/19 01:00 | Woo-Ram Kim v Seoung Hun Lee | 4-6,6-3,6-2 |
| ITF Korea F3 Qual | 2017/06/11 04:30 | Seung-Hun Shin v Seoung Hun Lee | 6-3,7-6 |
| ITF Korea F2 Qual | 2017/06/05 03:00 | Ku Keon Kang v Seoung Hun Lee | 5-7,6-2,6-4 |
| ITF Korea F2 Qual | 2017/06/03 03:00 | Seoung Hun Lee v Suk Ann | 6-2,6-3 |
| ITF Korea F8 | 2016/09/03 03:30 | Chuanqi Su v Seoung Hun Lee | 6-7,1-6 |
| ITF Korea F8 | 2016/08/20 05:00 | Seoung Hun Lee v Tae-Woo Lee | 2-6,4-6 |