Stadium: Center Court Round: 26 Ground: Hardcourt outdoor
| ITF M15 Anseong | 2019/06/26 01:00 | Yeongseok Jeong v Geun Jun Kim | 6-3,6-1 |
| ITF M25 Daegu | 2023/06/07 00:55 | Jesse Delaney v Geun Jun Kim | 3-6,3-6 |
| ITF M15 Daegu | 2022/09/02 02:00 | Duckhee Lee v Geun Jun Kim | 6-3,6-2 |
| ITF M15 Daegu | 2022/08/30 01:00 | Geun Jun Kim v Chanchai Sookton-Eng | 6-4,7-6 |
| ITF M15 Changwon | 2022/08/23 01:00 | Geun Jun Kim v Ryuki Matsuda | 1-6,3-6 |
| ITF M15 Anseong | 2022/08/17 03:10 | Colin Sinclair v Geun Jun Kim | 7-5,6-2 |
| ITF M25 Harmon | 2022/06/09 00:00 | Geun Jun Kim v Ko Suzuki | 3-6,1-6 |
| ITF M25 Harmon | 2022/06/07 03:15 | Colin Sinclair v Geun Jun Kim | 6-7,3-6 |
| ITF M25 Harmon | 2022/06/02 03:00 | Geun Jun Kim v Takuto Niki | 6-2,6-7,6-7 |
| ITF M25 Daegu | 2023/06/06 01:05 | Yeongseok Jeong v Yunseok Jang | 7-5,4-6,6-1 |
| ITF M25 Jakarta | 2023/04/21 03:00 | Leo Borg v Yeongseok Jeong | 6-0,6-0 |
| ITF M25 Jakarta | 2023/04/20 03:50 | Yeongseok Jeong v Ray Ho | 6-4,6-4 |
| ITF M25 Jakarta | 2023/04/19 02:30 | Renta Tokuda v Yeongseok Jeong | 6-7,6-3,3-6 |
| ITF M25 Jakarta | 2023/04/18 02:00 | Yeongseok Jeong v Tegar A S Wibowo | 6-2,6-2 |
| ITF M25 Jakarta | 2023/04/17 04:30 | Yeongseok Jeong v Andrei Duarte | 6-4,6-4 |
| ITF M25 Jakarta | 2023/04/11 04:05 | Yeongseok Jeong v Sanhui Shin | 6-4,3-6,8-10 |
| ITF M25 Jakarta | 2023/04/10 05:40 | Yeongseok Jeong v David Agung Susanto | 6-4,6-4 |