| ITF Korea F1 Qual | 2017/05/28 03:30 | Park, Sung Jun v Kim, Yu-Seob | 6-0,6-1 |
| Challenger Seoul Qual | 2017/05/06 06:05 | Kim, Yu-Seob v Sekiguchi, Shuichi | 1-6,4-6 |
| ITF Korea F8 | 2016/09/04 04:30 | Kim, Yu-Seob v Jeamoon Lee | 3-6,1-6 |
| ITF Korea F8 | 2016/08/28 02:00 | Kim, Yu-Seob v Oh, Chan-Yeong | 3-6,2-6 |
| ITF Korea F8 | 2016/08/21 04:30 | Kwon, OH-Hee v Kim, Yu-Seob | 6-2,6-3 |
| ITF Korea F1 Qual | 2016/06/11 01:00 | Choi, Jae-Won v Kim, Yu-Seob | 6-2,6-3 |
| ITF Korea F1 | 2015/05/16 01:00 | Kim, Yu-Seob v Sin, Dong-Hak | 3-6,3-6 |
| ITF Korea F1 Qual | 2017/05/28 01:00 | Shin, Geon Ju v Kim, Sung Hun | 6-2,6-2 |
| Challenger Gimcheon Qual | 2017/04/29 03:15 | Sarkissian, Alexander v Kim, Sung Hun | 6-1,6-2 |
| ITF Korea F1 Qual | 2016/06/12 03:00 | Kim, Seong Kwan v Kim, Sung Hun | 6-0,6-3 |
| ITF Korea F1 Qual | 2016/06/11 01:00 | Jeong, In Kyo v Kim, Sung Hun | 3-6,6-4,3-6 |