Stadium: Sub- Center Round: 25 Ground: Hardcourt outdoor
| ITF M25 Sapporo | 2022/09/10 00:50 | Rio Noguchi v Keisuke Saitoh | 1-6,6-3,6-0 |
| ITF M25 Sapporo | 2022/09/09 01:00 | Ryota Tanuma v Keisuke Saitoh | 6-0,4-6,3-6 |
| ITF M25 Sapporo | 2022/09/08 03:20 | Keisuke Saitoh v Shunsuke Nakagawa | 6-1,6-2 |
| ITF M25 Sapporo | 2022/09/07 00:30 | Kazuki Nishiwaki v Keisuke Saitoh | 3-6,2-6 |
| ITF M25 Sapporo | 2022/08/30 02:55 | Keisuke Saitoh v Daisuke Sumizawa | 5-7,6-3,4-6 |
| 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 M25 Kashiwa | 2022/09/27 01:00 | Taisei Ichikawa v Shintaro Imai | 6-7,6-4,2-6 |
| ITF M25 Sapporo | 2022/09/10 02:40 | Tatsuma Ito v Shintaro Imai | 5-7,6-2,7-6 |
| ITF M25 Sapporo | 2022/09/09 01:00 | Shuichi Sekiguchi v Shintaro Imai | 3-6,0-6 |
| ITF M25 Sapporo | 2022/09/08 01:00 | Ryuki Matsuda v Shintaro Imai | 1-6,3-6 |
| ITF M25 Sapporo | 2022/09/01 04:35 | Daisuke Sumizawa v Shintaro Imai | 6-2,2-6,6-1 |
| ITF M25 Sapporo | 2022/08/30 02:10 | Toki Adachi v Shintaro Imai | 0-6,1-6 |
| ITF M15 Jakarta | 2022/08/21 02:00 | Mukund Sasikumar v Shintaro Imai | 3-6,3-6 |
| ITF M15 Jakarta | 2022/08/20 02:00 | Fitriadi M Rifqi v Shintaro Imai | 4-6,2-6 |