Estadio: Center Court A Round: 26 Ground: Hardcourt outdoor
| ITF M25 Sapporo | 2022/09/07 00:30 | Shuichi Sekiguchi v Masamichi Imamura | 7-6,1-6,6-0 |
| ITF M25 Sapporo | 2022/09/04 02:00 | Rio Noguchi v Shuichi Sekiguchi | 4-6,7-5,6-2 |
| ITF M25 Sapporo | 2022/09/03 01:00 | Yuki Mochizuki v Shuichi Sekiguchi | 6-0,2-6,3-6 |
| ITF M25 Sapporo | 2022/09/02 01:00 | Shuichi Sekiguchi v Daisuke Sumizawa | 7-6,7-6 |
| ITF M25 Sapporo | 2022/09/01 05:30 | Shuichi Sekiguchi v Kento Takeuchi | 6-2,6-4 |
| ITF M25 Sapporo | 2022/09/01 01:00 | Shuichi Sekiguchi v Yusuke Takahashi | 6-1,6-7,6-2 |
| ITF M15 Changwon | 2022/08/24 05:55 | Geni Inoue v Shuichi Sekiguchi | 3-6,6-3,6-4 |
| ITF M15 Fountain Valley | 2022/07/09 19:40 | Zachary Svajda v Shuichi Sekiguchi | 4-6,6-1,6-0 |
| ITF M25 Sapporo | 2022/09/07 00:25 | Mao Takada v Taki Adachi | 3-6,2-6 |
| ITF M25 Sapporo | 2022/09/01 01:00 | Taki Adachi v Ko Suzuki | 0-6,1-6 |
| ITF M15 Anseong | 2022/08/16 02:50 | Haesun Lee v Taki Adachi | 7-5,6-2 |
| ITF M15 Fountain Valley | 2022/07/04 17:00 | Taki Adachi v Jared Thompkins | 2-6,1-6 |
| ITF M25 Harmon | 2022/06/08 02:00 | Taki Adachi v Cheong-Eui Kim | 0-6,3-6 |
| ITF M25 Harmon | 2022/06/08 01:30 | Taki Adachi v Cheong E Kim | 0-6,3-6 |
| ITF M25 Harmon | 2022/06/06 00:00 | William Alan Yang v Taki Adachi | 3-6,1-6 |
| ITF M25 Harmon | 2022/05/30 02:20 | William Alan Yang v Taki Adachi | 0-6,2-6 |