Stadium: Court 5 Round: 44
| ITF Korea F2 | 2018/06/09 02:00 | Byeonghun Kim v Yu-Seob Kim | 2-6,6-3,1-6 |
| ITF Korea F1 | 2018/06/03 02:00 | Jun Sang Park v Yu-Seob Kim | 5-7,6-3,6-2 |
| ITF Thailand F7 Qual | 2017/09/30 02:30 | Yu-Seob Kim v Suthinan Tanthaseraneewat | 2-6,2-6 |
| ITF Korea F3 Qual | 2017/06/10 03:00 | Yu-Seob Kim v Woo-Ram Kim | 2-6,2-6 |
| ITF Korea F2 Qual | 2017/06/04 04:30 | Yu-Seob Kim v In Kyo Jeong | 3-6,5-7 |
| ITF Korea F2 Qual | 2017/06/03 03:00 | Yu-Seob Kim v Sung Hun Kim | 6-1,6-4 |
| ITF Korea F1 Qual | 2017/05/28 03:30 | Sung Jun Park v Yu-Seob Kim | 6-0,6-1 |
| Challenger Seoul Qual | 2017/05/06 06:05 | Yu-Seob Kim v Shuichi Sekiguchi | 1-6,4-6 |
| ITF Korea F1 | 2018/06/08 02:00 | Jeamoon Lee v Young-Hoon Jeong | 6-1,6-4 |
| ITF Korea F1 | 2018/06/07 04:00 | Hyeong Jin Cho v Young-Hoon Jeong | 0-6,1-6 |
| ITF Korea F1 | 2018/06/06 01:00 | Young-Hoon Jeong v Seong Chan Hong | 1-6,6-3,6-2 |
| ITF Korea F1 | 2018/06/04 01:00 | Young-Hoon Jeong v Hyeong Don Kim | 6-2,7-5 |
| ITF Korea F1 | 2018/06/03 01:00 | Young-Hoon Jeong v Ilsang Yoon | 6-4,5-7,6-2 |
| ITF Thailand F12 | 2017/12/13 04:15 | Young-Hoon Jeong v Ti Chen | 4-6,6-0,1-6 |
| ITF Thailand F12 | 2017/12/12 05:30 | Xin Gao v Young-Hoon Jeong | 1-6,7-6,2-6 |
| ITF Thailand F12 Qual | 2017/12/11 03:00 | Young-Hoon Jeong v Aoran Wang | 6-1,7-5 |