Stadium: Court 5 Round: 26 Ground: Clay
| ITF - Anseong M25 | 2023/06/21 05:50 | Yunseong Chung v Jae Myeong Lee | 6-2,6-2 |
| ITF - Changwon M25 | 2023/06/15 02:30 | Yunseong Chung v Renta Tokuda | 6-7,1-6 |
| ITF - Changwon M25 | 2023/06/14 01:00 | Yunseong Chung v Yeongseok Jeong | 6-2,6-2 |
| ITF - Daegu M25 | 2023/06/09 00:50 | Yunseong Chung v Uisung Park | 6-7,3-6 |
| ITF - Daegu M25 | 2023/06/07 03:55 | Yunseong Chung v Suk Hyun Choo | 6-3,6-1 |
| Challenger Busan | 2023/05/11 06:40 | Yunseong Chung v Gabriel Diallo | 6-7,6-7 |
| Challenger Busan | 2023/05/09 06:15 | Yunseong Chung v Tung-Lin Wu | 7-5,6-2 |
| Challenger Gwangju | 2023/05/05 04:45 | Yunseong Chung v Jason Jung | 6-3,3-6,4-6 |
| ITF - Anseong M25 | 2023/06/21 03:30 | Dong Ju Kim v Dae Han Kim | 7-5,6-2 |
| ITF - Anseong M25 | 2023/06/19 07:45 | Dong Ju Kim v Kuan Yu Chen | 6-2,6-1 |
| ITF - Changwon M25 | 2023/06/12 08:30 | Junhyun Lee v Dong Ju Kim | 3-6,6-3,13-11 |
| ITF - Changwon M25 | 2023/06/12 05:30 | Woohyuk Sim v Dong Ju Kim | 6-3,3-6,11-13 |
| ITF - Changwon M25 | 2023/06/11 08:30 | Ki Bum Kim v Dong Ju Kim | 6-4,1-6,10-12 |
| ITF - Daegu M25 | 2023/06/08 01:00 | Dong Ju Kim v Jeamoon Lee | 3-6,3-6 |
| ITF - Daegu M25 | 2023/06/07 02:40 | Keisuke Saitoh v Dong Ju Kim | 1-6,2-6 |
| ITF - Daegu M25 | 2023/06/05 06:40 | Dong Ju Kim v Woodam Song | 6-1,6-2 |