| ITF Korea F6 | 2018/08/30 05:50 | Lucas Catarina v Kim, Seong Kwan | 6-2,6-4 |
| ITF Korea F6 | 2018/08/27 02:00 | Kim, Sung Hun v Kim, Seong Kwan | 4-6,6-7 |
| ITF Korea F6 | 2018/08/25 01:00 | Kim, Seong Kwan v Kim, Yu-Seob | 6-4,6-3 |
| Korea F3, Singles Qualifying | 2018/06/16 02:00 | Yoon, Jaeheon v Kim, Seong Kwan | 6-4,6-4 |
| ITF Korea F2 | 2018/06/10 02:00 | Park, Sung Jun v Kim, Seong Kwan | 7-6,6-1 |
| ITF Thailand F12 Qual | 2017/12/10 03:00 | Kim, Seong Kwan v Li, Yuanfeng | 1-6,3-6 |
| ITF Thailand F12 Qual | 2017/12/09 06:30 | Kim, Seong Kwan v Rakpuangchon, Vorachon | 7-5,6-1 |
| ITF Thailand F11 Qual | 2017/12/02 05:00 | Roberts, Charles v Kim, Seong Kwan | 6-2,7-6 |
| ITF Korea F6 | 2018/08/25 01:00 | Seol, Jae-Min v Boggs, Brian | 2-6,2-6 |
| ITF Korea F5 | 2018/08/18 01:00 | Park, Jaeyoung v Seol, Jae-Min | 6-2,6-2 |
| ITF Korea F4 | 2018/08/12 02:00 | Seol, Jae-Min v Jung, Ki-Su | 3-6,2-6 |
| ITF Korea F2 | 2018/06/10 02:00 | Jung, Hyeon IL v Seol, Jae-Min | 6-3,6-4 |
| ITF Korea F1 | 2018/06/03 02:00 | Seol, Jae-Min v Cho, Hyeong Jin | 3-6,2-6 |
| ITF Vietnam F3 | 2018/05/14 04:35 | Seol, Jae-Min v Abhinav Sanjeev Shanmugam | 2-6,1-6 |
| ITF Vietnam F2 | 2018/05/05 07:00 | Skadarka, Stefan v Seol, Jae-Min | 6-4,6-1 |
| ITF Kazakhstan F4 Qual | 2018/04/16 03:30 | Seol, Jae-Min v Kutsenko, Vadim | 2-6,3-6 |