Stadium: Court 14 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Changwon | 2023/06/12 04:30 | Naoki Tajima v Hyun Woo Cho | 6-1,6-0 |
| ITF M25 Changwon | 2023/06/12 00:55 | Naoki Tajima v Seonghun Kim | 6-4,6-0 |
| ITF M25 Changwon | 2023/06/11 04:25 | Naoki Tajima v Je Won Jeon | 6-1,6-1 |
| ITF M15 Karuizawa | 2023/05/30 03:30 | Ryotaro Matsumura v Naoki Tajima | 3-6,6-1,6-4 |
| ITF M25 Jakarta | 2023/04/25 04:15 | Naoki Tajima v Credit Chaiyarin | 7-5,3-6,8-10 |
| ITF M25 Jakarta | 2023/04/24 06:30 | Naoki Tajima v Arsya Philo Wisyesa Putra Sjarifuddin | 6-0,6-0 |
| ITF M25 Jakarta | 2023/04/17 07:00 | Naoki Tajima v Andrew Rogers | 6-7,4-6 |
| ITF M25 Jakarta Qual | 2023/04/16 04:40 | Pruchya Isarow v Naoki Tajima | 6-2,3-6,8-10 |
| ITF M25 Changwon | 2023/06/14 04:00 | Hong Chung v Chan-Yeong Oh | 4-6,5-7 |
| ITF M25 Changwon | 2023/06/12 08:20 | Chan-Yeong Oh v Dae Han Kim | 5-7,6-2,10-4 |
| ITF M25 Changwon | 2023/06/12 04:55 | Chan-Yeong Oh v Chan Hee Han | 6-3,6-2 |
| ITF M25 Changwon | 2023/06/11 05:35 | Seon Yong Han v Chan-Yeong Oh | 3-6,2-6 |
| ITF M25 Daegu | 2023/06/07 04:40 | Chan-Yeong Oh v Hong Chung | 2-6,4-6 |
| ITF M25 Daegu | 2023/06/05 01:00 | Issei Okamura v Chan-Yeong Oh | 1-6,6-4,7-10 |
| ITF M15 Daegu | 2022/08/29 00:30 | Sanhui Shin v Chan-Yeong Oh | 6-2,6-2 |
| ITF M15 Changwon | 2022/08/21 03:30 | Chan-Yeong Oh v Suk Hyun Choo | 6-2,3-6,7-10 |