Round: 44 Ground: Hardcourt outdoor
| ITF Korea F3 Qual | 2017/06/10 03:00 | Sung Jun Park v Sang Yeop Kim | 2-6,2-6 |
| ITF Korea F1 | 2018/06/03 03:30 | Yu Hsiang Chiu v Sung Jun Park | 4-6,2-6 |
| ITF Korea F1 | 2018/06/02 02:00 | Sung Jun Park v Seoung Hun Lee | 6-1,6-1 |
| 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 F5 | 2017/06/27 01:30 | Sang Yeop Kim v A-Ram Kim | 6-7,4-6 |
| ITF Korea F4 | 2017/06/20 04:30 | Sang Yeop Kim v Cheong-Eui Kim | 0-6,2-6 |
| ITF Korea F4 | 2017/06/19 01:00 | Sang Yeop Kim v Geon Ju Shin | 6-3,6-4 |
| ITF Korea F4 | 2017/06/18 01:00 | Dae-Hee Lee v Sang Yeop Kim | 3-6,4-6 |
| ITF Korea F4 | 2017/06/17 01:00 | Donghwi Shin v Sang Yeop Kim | 2-6,2-6 |
| ITF Korea F3 Qual | 2017/06/12 03:00 | Hyun-Joon Kim v Sang Yeop Kim | 6-0,6-1 |
| ITF Korea F3 Qual | 2017/06/10 03:00 | Sung Jun Park v Sang Yeop Kim | 2-6,2-6 |
| ITF Korea F2 | 2017/06/08 03:30 | Sang Yeop Kim v Cheong-Eui Kim | 2-6,1-6 |