Estadio: Indoor 10 Ground: Hardcourt outdoor
| Challenger de Zhangjiagang | 2023/08/27 06:25 | Shuichi Sekiguchi v Francis Casey Alcantara | 7-5,6-3 |
| Challenger de Zhuhai | 2023/08/22 07:00 | Dominik Palan v Shuichi Sekiguchi | 7-6,5-7,6-2 |
| Challenger de Zhuhai | 2023/08/21 03:00 | Shuichi Sekiguchi v Markos Kalovelonis | 7-6,2-6,6-4 |
| ITF M25 Astana | 2023/08/05 07:45 | Yusuke Takahashi v Shuichi Sekiguchi | 6-4,6-4 |
| ITF M25 Astana | 2023/08/04 08:45 | Shuichi Sekiguchi v Egor Agafonov | 7-6,6-1 |
| ITF M25 Astana | 2023/08/03 07:15 | Shuichi Sekiguchi v S D Prajwal Dev | 6-7,7-5,6-0 |
| ITF M25 Astana | 2023/08/02 05:40 | Ajeet Rai v Shuichi Sekiguchi | 2-6,1-6 |
| Challenger de Astana | 2023/07/24 08:30 | Khumoyun Sultanov v Shuichi Sekiguchi | 7-6,6-4 |
| Challenger de Zhangjiagang | 2023/08/27 04:40 | Kaito Uesugi v Jie Cui | 4-6,5-7 |
| ITF M25 Yinchuan | 2023/08/20 01:55 | Jie Cui v Fajing Sun | 6-3,7-5 |
| ITF M25 Yinchuan | 2023/08/18 02:00 | Aoran Wang v Jie Cui | 3-6,4-6 |
| ITF M25 Yinchuan | 2023/08/17 02:00 | Jie Cui v Ye Cong Mo | 4-6,7-6,6-2 |
| ITF M25 Yinchuan | 2023/08/16 04:10 | Jie Cui v Zhao Zhao | 6-4,6-2 |
| ITF M25 Anning | 2023/08/06 02:55 | Jie Cui v Fajing Sun | 3-6,6-4,2-6 |
| ITF M25 Anning | 2023/08/05 02:25 | Evan Zhu v Jie Cui | 2-6,4-6 |
| ITF M25 Anning | 2023/08/04 01:25 | Jie Cui v Xiaofei Wang | 4-6,6-2,6-3 |