Stadium: Court 1 Round: 54 Ground: Hardcourt outdoor
| ITF Thailand F12 Qual | 2017/12/10 03:00 | Young Seok Kim v Young-Hoon Jeong | 4-6,3-6 |
| ITF M15 Gimcheon | 2019/06/17 02:50 | Sung Hun Kim v Young Seok Kim | 6-4,6-3 |
| ITF M15 Gimcheon | 2019/06/12 02:25 | Young Seok Kim v Uisung Park | 4-6,2-6 |
| ITF M15 Daegu | 2019/06/08 01:00 | Seong-Gook Oh v Young Seok Kim | 6-2,6-2 |
| ITF M15 Daegu | 2019/06/06 04:45 | Taisei Ichikawa v Young Seok Kim | 3-6,6-3,5-7 |
| ITF M15 Daegu | 2019/06/05 05:00 | Young Seok Kim v Takuto Niki | 6-4,6-3 |
| 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 M15 Anseong | 2019/06/24 01:00 | Seoung Hun Lee v Young-Hoon Jeong | 1-6,0-6 |
| ITF M15 Gimcheon | 2019/06/17 01:00 | Seong Taek Im v Young-Hoon Jeong | 5-7,6-3,10-6 |
| ITF M15 Gimcheon | 2019/06/13 05:00 | Young-Hoon Jeong v Seon Yong Han | 6-3,3-6,5-7 |
| ITF M15 Gimcheon | 2019/06/12 01:00 | Takuto Niki v Young-Hoon Jeong | 4-6,6-7 |
| ITF Korea F6 | 2018/08/28 02:00 | Yeongseok Jeong v Young-Hoon Jeong | 7-5,7-6 |
| Challenger Gwangju Qual | 2018/08/11 04:45 | Vasko Mladenov v Young-Hoon Jeong | 6-0,6-2 |
| ITF China F10 Qual | 2018/07/09 04:05 | Young-Hoon Jeong v Hao Wu | 3-6,1-6 |
| ITF China F10 Qual | 2018/07/08 02:00 | Young-Hoon Jeong v David Barclay | 6-1,6-3 |