Stadium: Court 6 Round: 54 Ground: Hardcourt outdoor
| ITF M15 Hong Kong | 2020/01/06 02:00 | Issei Okamura v Douglas Geiwald | 6-2,6-1 |
| ITF M25 Tay Ninh | 2019/10/01 02:00 | Yurii Dzhavakian v Douglas Geiwald | 6-2,6-2 |
| ITF M25 Tay Ninh | 2019/09/30 04:55 | Jatuporn Nalamphun v Douglas Geiwald | 3-6,0-6 |
| ITF M25 Hong Kong | 2019/06/11 07:00 | Muthu A Senthilkumar v Douglas Geiwald | 6-7,6-1,10-8 |
| ITF M15 Guam | 2019/06/04 00:00 | Douglas Geiwald v Hugo Pontico | 3-6,2-6 |
| ITF M25 Hong Kong | 2018/12/31 02:00 | Yu Hsiou Hsu v Douglas Geiwald | 6-0,6-1 |
| ITF Hong Kong F3 | 2018/12/22 02:00 | Cing-Yang Meng v Douglas Geiwald | 7-6,7-5 |
| ITF Thailand F3 | 2018/09/01 02:00 | Kittirat Kerdlaphee v Douglas Geiwald | 6-2,6-1 |
| ITF M25 Hong Kong | 2023/08/27 04:30 | Justin Barki v Young Seok Kim | 6-3,6-3 |
| ITF M25 Jakarta | 2023/08/07 03:00 | Rishi Reddy v Young Seok Kim | 5-7,2-6 |
| ITF M25 Jakarta | 2023/08/06 02:55 | Aldhito R Dwi Kurniawan v Young Seok Kim | 2-6,2-6 |
| ITF M25 Anseong | 2023/06/21 05:30 | Jangjun Kim v Young Seok Kim | 6-3,4-6,7-6 |
| ITF M25 Anseong | 2023/06/19 06:50 | Young Seok Kim v Kenta Nakamura | 6-0,6-2 |
| ITF M25 Anseong | 2023/06/19 02:55 | Young Seok Kim v Byeonghun Kim | 6-0,6-1 |
| ITF M25 Anseong | 2023/06/18 05:15 | Junhyun Lee v Young Seok Kim | 2-6,3-6 |
| ITF M25 Changwon | 2023/06/12 02:45 | Jungwoong Na v Young Seok Kim | 6-2,6-2 |