| ITF Thailand F9 | 11/27 03:00 | 28 | Kim, Young Seok v Duckhee Lee | 3-6,2-6 | |
| ITF Thailand F9 | 11/26 04:50 | 27 | Matyas Fuele v Kim, Young Seok | 1-6,3-6 | |
| ITF Thailand F9 | 11/25 04:15 | 26 | Burapharitta, Phassawit v Kim, Young Seok | 6-7,0-6 | |
| ITF Thailand F9 | 11/24 07:50 | 25 | Kaewsuto, Chayanon v Kim, Young Seok | 0-6,2-6 | |
| ITF Thailand F9 | 08/04 06:00 | 25 | Kim, Young Seok v Grills, Jacob | 5-7,4-6 | |
| ITF China F11 | 07/23 02:00 | - | Kim, Young Seok v Yang, Tsung-Hua | 1-6,2-6 | |
| ITF China F11 | 07/22 02:00 | - | Qi, Xi v Kim, Young Seok | 6-7,6-7 | |
| ITF China F11 | 07/20 04:10 | - | Kondo, Hiroki v Kim, Young Seok | 6-7,1-6 | |
| ITF China F10 | 07/15 03:30 | - | Na, Jung-Woong v Kim, Young Seok | 7-5,1-6,6-3 | |
| ITF China F10 | 07/14 03:05 | - | Runhao Hua v Kim, Young Seok | 6-3,6-7,5-7 | |
| ITF China F9 | 07/03 02:00 | - | Zhang, Ze v Kim, Young Seok | 6-0,6-2 | |
| ITF China F9 | 07/02 03:50 | - | Ouyang, Bowen v Kim, Young Seok | 2-6,5-7 | |
| ITF China F9 | 06/30 08:00 | - | Qi, Xi v Kim, Young Seok | 1-6,1-6 | |
| ITF China F8 | 06/27 03:10 | - | Wu, Di v Kim, Young Seok | 6-1,6-3 | |
| ITF China F8 | 06/24 02:35 | - | Zeng, Shi Hong v Kim, Young Seok | 3-6,2-6 | |
| ITF China F8 | 06/23 02:00 | - | Zhou, Sheng Hao v Kim, Young Seok | 3-6,2-6 | |
| ITF China F6 | 05/27 02:00 | - | Kim, Young Seok v Yan Bai | 3-6,1-6 | |
| ITF China F6 | 05/26 02:00 | - | Onishi, Ken v Kim, Young Seok | 3-6,5-7 | |
| ITF China F6 | 05/21 02:00 | - | Michael Geerts v Kim, Young Seok | 6-4,6-1 | |
| ITF China F6 | 05/19 04:05 | - | Wang, Aoxiong v Kim, Young Seok | 1-6,2-6 | |
| ITF China F4 | 04/24 03:15 | - | Zemlja, Grega v Kim, Young Seok | 6-4,6-1 | |
| ITF China F4 | 04/22 02:00 | - | Roelofse, Ruan v Kim, Young Seok | 5-7,6-7 | |
| ITF China F4 | 04/21 02:00 | - | Kim, Young Seok v Yang, Tsung-Hua | 3-6,6-2,7-6 | |
| ITF China F2 Qual | 04/14 02:00 | - | Westerhof, Boy v Kim, Young Seok | 6-2,6-4 | |
| ITF China F2 | 04/12 02:00 | - | Yang, Tsung-Hua v Kim, Young Seok | 6-0,7-5 | |
| ITF China F2 | 04/11 04:10 | - | Kim, Cheong-Eui v Kim, Young Seok | 6-7,6-7 | |
| ITF China F2 | 04/10 03:20 | - | Kim, Young Seok v Westerhof, Boy | 6-4,2-6,6-4 | |
| ITF China F2 | 04/08 02:00 | - | Kim, Young Seok v Zhu, Zhicheng | Retired | |
| ITF China F2 | 04/06 05:20 | - | Kim, Young Seok v Cao, Zhaoyi | 6-2,6-2 | |
| ITF Argentina F3 | 03/24 13:00 | - | Martniez, Mateo Nicolas v Kim, Young Seok | 6-2,6-0 |