| ITF Korea F1 | 2018/06/04 01:00 | Cho, Hyeong Jin v Kim, Byeonghun | 1-6,6-3,7-5 |
| ITF Korea F1 | 2018/06/03 02:00 | Kim, Byeonghun v Yoon, Jaeheon | 6-1,6-2 |
| ITF Korea F1 | 2018/06/02 02:00 | Lee, Min Hyun v Kim, Byeonghun | 6-2,3-6,0-6 |
| ITF Korea F5 | 2017/06/26 03:30 | Kim, Byeonghun v Park, Sung Jun | 0-6,6-3,0-6 |
| ITF Korea F4 | 2017/06/19 01:00 | Sin, Dong-Hak v Kim, Byeonghun | 6-3,6-1 |
| ITF Korea F2 Qual | 2017/06/05 03:00 | Cho, Hyeong Jin v Kim, Byeonghun | 6-1,1-6,7-5 |
| ITF Korea F2 Qual | 2017/06/04 04:30 | Kim, Byeonghun v Kim, A-Ram | 4-6,6-2,6-4 |
| ITF Korea F2 Qual | 2017/06/03 02:00 | Kim, Byeonghun v Shin, Geon Ju | 4-6,6-1,6-0 |
| ITF Korea F1 | 2018/06/03 02:00 | Park, Jun Sang v Kim, Yu-Seob | 5-7,6-3,6-2 |
| ITF Thailand F7 Qual | 2017/09/30 02:30 | Kim, Yu-Seob v Tanthaseraneewat, Suthinan | 2-6,2-6 |
| Korea F3, Singles Qualifying | 2017/06/10 03:00 | Kim, Yu-Seob v Kim, Woo-Ram | 2-6,2-6 |
| ITF Korea F2 Qual | 2017/06/04 04:30 | Kim, Yu-Seob v Jeong, In Kyo | 3-6,5-7 |
| ITF Korea F2 Qual | 2017/06/03 03:00 | Kim, Yu-Seob v Kim, Sung Hun | 6-1,6-4 |
| 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 |