Stadium: Sub Court B Round: 27 Ground: Hardcourt outdoor
| ITF - Nonthaburi M15 | 2019/11/27 02:30 | Keisuke Saitoh v Ryota Tanuma | 6-2,7-6 |
| ITF - Sapporo M25 | 2022/09/08 03:10 | Ryota Tanuma v Takuya Kumasaka | 6-2,6-1 |
| ITF - Sapporo M25 | 2022/09/07 02:40 | Ryota Tanuma v Taisei Ichikawa | 6-0,6-0 |
| ITF - Sapporo M25 | 2022/09/03 01:00 | Rio Noguchi v Ryota Tanuma | 6-4,7-5 |
| ITF - Sapporo M25 | 2022/09/02 00:55 | Ryota Tanuma v Tatsuma Ito | 6-4,6-1 |
| ITF - Sapporo M25 | 2022/09/01 01:00 | Ryota Tanuma v Naoki Tajima | 6-1,6-4 |
| ITF - Jakarta M15 | 2022/08/17 05:00 | Ryota Tanuma v Yusuke Takahashi | 6-7,4-6 |
| ITF - Jakarta M15 | 2022/08/14 03:00 | Yuta Shimizu v Ryota Tanuma | 6-2,7-5 |
| ITF - Jakarta M15 | 2022/08/12 02:00 | Ryota Tanuma v Mitsuki Wei Kang Leong | 6-3,6-2 |
| ITF - Sapporo M25 | 2022/09/08 03:20 | Keisuke Saitoh v Shunsuke Nakagawa | 6-1,6-2 |
| ITF - Sapporo M25 | 2022/09/07 00:30 | Kazuki Nishiwaki v Keisuke Saitoh | 3-6,2-6 |
| ITF - Sapporo M25 | 2022/08/30 02:55 | Keisuke Saitoh v Daisuke Sumizawa | 5-7,6-3,4-6 |
| ITF - Kuching M15 | 2022/08/04 04:30 | Tsung-Hao Huang v Keisuke Saitoh | 6-1,6-0 |
| ITF - Kuching M15 | 2022/08/02 01:00 | Keisuke Saitoh v Vishnu Vardhan | 6-1,7-5 |
| ITF - Kuala Lumpur M15 | 2022/07/30 01:00 | Nam Hoang Ly v Keisuke Saitoh | 6-2,6-3 |
| ITF - Kuala Lumpur M15 | 2022/07/29 01:00 | Uisung Park v Keisuke Saitoh | 3-6,3-6 |
| ITF - Kuala Lumpur M15 | 2022/07/26 02:15 | Hao Sheng Koay v Keisuke Saitoh | 3-6,1-6 |