Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF M15 - Daegu | 2019/06/04 03:25 | Young Seok Kim v Kangjae Kim | 6-1,6-0 |
| ITF M15 - Daegu | 2019/06/03 01:00 | Young Seok Kim v Jin Sung Han | 6-4,6-4 |
| Challenger - Busan | 2019/05/07 02:00 | Young Seok Kim v Luke Saville | 1-6,0-6 |
| ITF Thailand F7 | 2018/10/30 07:05 | Young Seok Kim v Hiroyasu Ehara | 6-7,1-6 |
| ITF Thailand F7 | 2018/10/29 02:00 | Mitchell Thomas McDaniels v Young Seok Kim | 6-7,4-6 |
| ITF Thailand F7 | 2018/10/28 03:00 | Nawakarn Khunjan v Young Seok Kim | 4-6,3-6 |
| ITF Korea F6 | 2018/08/31 03:00 | Young Seok Kim v Seong-Gook Oh | 5-7,6-2,4-6 |
| ITF Korea F6 | 2018/08/30 03:00 | Jae Hwan Kim v Young Seok Kim | 2-6,2-6 |
| ITF M15 - Singapore | 2019/05/29 02:00 | Jatin Dahiya v Takuto Niki | 1-6,4-6 |
| ITF M25 - Luan | 2019/05/17 06:30 | Wishaya Trongcharoenchaikul v Takuto Niki | 7-6,4-6,7-6 |
| ITF M25 - Luan | 2019/05/16 03:30 | Kento Takeuchi v Takuto Niki | 4-6,7-6,1-6 |
| ITF M25 - Luan | 2019/05/15 02:00 | Cheng-Yu Yu v Takuto Niki | 4-6,6-3,3-6 |
| ITF M25 Wuhan | 2019/05/09 02:00 | Takuto Niki v Fajing Sun | 6-7,3-6 |
| ITF M25 Wuhan | 2019/05/08 02:00 | Cheng-Yu Yu v Takuto Niki | 4-6,7-6,3-6 |
| ITF M25 Matsuyama | 2019/04/14 04:15 | Takuto Niki v Shuichi Sekiguchi | 4-6,4-6 |
| ITF M25 Matsuyama | 2019/04/13 03:00 | Takuto Niki v Wishaya Trongcharoenchaikul | 7-5,6-3 |