Stadium: Sub Court B Round: 27 Ground: Hardcourt outdoor
| ITF M25 Taipei | 2024/08/01 04:20 | Kokoro Isomura v Keisuke Saitoh | 3-6,4-6 |
| ITF M25 Sapporo | 2024/09/05 03:50 | Kokoro Isomura v Ryotaro Taguchi | 6-4,6-4 |
| ITF M25 Sapporo | 2024/09/04 01:00 | Aidan Mchugh v Kokoro Isomura | 6-7,6-7 |
| ITF M25 Taipei | 2024/08/09 01:50 | Mukund Sasikumar v Kokoro Isomura | 6-1,3-6,6-3 |
| ITF M25 Taipei | 2024/08/08 02:30 | Kokoro Isomura v Yunseong Chung | 7-5,6-2 |
| ITF M25 Taipei | 2024/08/06 01:55 | Kokoro Isomura v Ray Ho | 7-6,6-3 |
| ITF M25 Taipei | 2024/08/01 04:20 | Kokoro Isomura v Keisuke Saitoh | 3-6,4-6 |
| ITF M25 Taipei | 2024/07/31 03:55 | Stefanos Sakellaridis v Kokoro Isomura | 7-6,3-6,6-7 |
| ITF M15 Tokyo | 2024/07/12 02:00 | Kokoro Isomura v Jeamoon Lee | 2-6,4-6 |
| ITF M25 Sapporo | 2024/09/05 03:10 | Hiromasa Koyama v Keisuke Saitoh | 0-6,6-4,3-6 |
| ITF M25 Sapporo | 2024/09/04 01:00 | Keisuke Saitoh v Masamichi Imamura | 7-5,6-2 |
| ITF M25 Taipei | 2024/08/07 07:55 | Tsung-Hao Huang v Keisuke Saitoh | 6-3,6-2 |
| ITF M25 Taipei | 2024/08/04 02:00 | Yu Hsiou Hsu v Keisuke Saitoh | 3-6,1-6 |
| ITF M25 Taipei | 2024/08/03 01:55 | Keisuke Saitoh v Ryotaro Taguchi | 3-6,7-6,7-6 |
| ITF M25 Taipei | 2024/08/02 02:00 | Keisuke Saitoh v Takuya Kumasaka | 6-1,6-4 |
| ITF M25 Taipei | 2024/08/01 04:20 | Kokoro Isomura v Keisuke Saitoh | 3-6,4-6 |
| ITF M25 Taipei | 2024/07/31 03:25 | Keisuke Saitoh v Tomohiro Masabayashi | 6-1,6-0 |