Stadium: Court 9 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Sharm El Sheikh | 2021/02/16 09:25 | Daisuke Sumizawa v Keisuke Saitoh | 2-6,4-6 |
| ITF M15 Kuching | 2022/08/04 04:30 | Tsung-Hao Huang v Keisuke Saitoh | 6-1,6-0 |
| ITF M15 Kuching | 2022/08/02 01:00 | Keisuke Saitoh v Vishnu Vardhan | 6-1,7-5 |
| ITF M15 Kuala Lumpur | 2022/07/30 01:00 | Nam Hoang Ly v Keisuke Saitoh | 6-2,6-3 |
| ITF M15 Kuala Lumpur | 2022/07/29 01:00 | Uisung Park v Keisuke Saitoh | 3-6,3-6 |
| ITF M15 Kuala Lumpur | 2022/07/26 02:15 | Hao Sheng Koay v Keisuke Saitoh | 3-6,1-6 |
| ITF M15 Monastir | 2022/07/07 11:05 | Keisuke Saitoh v Guy Orly Iradukunda | 1-6,0-6 |
| ITF M15 Monastir | 2022/07/06 09:35 | Keisuke Saitoh v Egor Tsarapkin | 6-2,6-2 |
| ITF M15 Monastir | 2022/06/30 09:30 | Keisuke Saitoh v Terence Atmane | 3-6,4-6 |
| ITF M15 Kuching | 2022/08/03 01:00 | Daisuke Sumizawa v Ji Hoon Son | 1-6,2-6 |
| ITF M15 Kuala Lumpur | 2022/07/27 02:45 | Kazuma Kawachi v Daisuke Sumizawa | 4-6,7-5,6-3 |
| ITF M15 Seremban | 2022/07/24 01:00 | Shinji Hazawa v Daisuke Sumizawa | 0-6,2-6 |
| ITF M15 Seremban | 2022/07/23 02:00 | Daisuke Sumizawa v Uisung Park | 6-3,7-6 |
| ITF M15 Seremban | 2022/07/22 01:00 | Kento Takeuchi v Daisuke Sumizawa | 1-6,4-6 |
| ITF M15 Seremban | 2022/07/21 01:30 | Daisuke Sumizawa v Jie Cui | 7-6,6-2 |
| ITF M15 Seremban | 2022/07/20 03:20 | Daisuke Sumizawa v Dheeraj Kodancha Srinivasan | 6-3,6-3 |
| ITF M15 Budva | 2022/06/10 09:00 | Daisuke Sumizawa v Ivan Liutarevich | 7-5,6-7,1-6 |