Stadium: Court 9 Round: 54 Ground: Hardcourt outdoor
| ITF M15 Tsukuba | 2024/03/24 01:00 | Yeongseok Jeong v Ryotaro Matsumura | 3-6,4-6 |
| ITF M15 Nishi-Tokyo | 2024/03/18 03:30 | Yeongseok Jeong v Shunsuke Nakagawa | 6-7,2-6 |
| ITF M15 Nakhon Si Thammarat | 2024/02/28 02:00 | Sander Jong v Yeongseok Jeong | 6-3,7-5 |
| ITF M15 Nakhon Si Thammarat | 2024/02/19 02:00 | Yeongseok Jeong v Nitin Kumar Sinha | 6-7,6-7 |
| ITF M15 Nakhon Si Thammarat Qual | 2024/02/18 03:50 | Yeongseok Jeong v Bharath Nishok Kumaran | 5-7,7-6,10-4 |
| ITF M15 Nakhon Si Thammarat | 2024/02/13 05:00 | Yeongseok Jeong v Stefanos Sakellaridis | 1-6,3-6 |
| ITF M15 Kuala Lumpur | 2023/12/03 01:50 | Yeongseok Jeong v Alexey Zakharov | 1-6,7-6,6-4 |
| ITF M15 Kuala Lumpur | 2023/12/02 02:00 | Yeongseok Jeong v Ryota Tanuma | 7-6,4-6,6-4 |
| ITF M15 Tsukuba | 2024/03/24 01:00 | Issei Okamura v Masamichi Imamura | 6-7,6-7 |
| ITF M15 Nishi-Tokyo | 2024/03/18 03:30 | Jumpei Yamasaki v Issei Okamura | 6-2,6-1 |
| ITF M15 Hinode | 2024/03/11 04:30 | Koki Matsuda v Issei Okamura | 6-4,6-3 |
| ITF M15 Hinode | 2024/03/11 01:00 | Yudai Umeoka v Issei Okamura | 3-6,6-7 |
| ITF M25 Traralgon | 2024/02/27 01:05 | Jesse Delaney v Issei Okamura | 6-4,6-4 |
| ITF M25 Traralgon | 2024/02/26 01:30 | Winter Meagher v Issei Okamura | 2-6,2-6 |
| ITF M25 Traralgon | 2024/02/20 23:00 | Issei Okamura v Matt Hulme | 6-1,3-6,3-6 |
| ITF M25 Traralgon | 2024/02/20 00:25 | Yuta Kikuchi v Issei Okamura | 1-6,7-5,6-10 |