Stadium: Court 6 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Nakhon Si Thammarat | 2023/06/07 03:30 | Daisuke Sumizawa v Maximus Jones | 1-6,2-6 |
| ITF M15 Karuizawa | 2023/06/01 00:30 | Sora Fukuda v Daisuke Sumizawa | 6-3,6-4 |
| ITF M15 Karuizawa | 2023/05/30 07:35 | Taketo Takamisawa v Daisuke Sumizawa | 2-6,4-6 |
| Challenger Busan | 2023/05/08 02:00 | Daisuke Sumizawa v Woobin Shin | 6-2,3-6,2-6 |
| Challenger Gwangju | 2023/04/30 04:10 | Daniel Masur v Daisuke Sumizawa | 6-0,6-4 |
| ITF M25 Kashiwa | 2023/04/06 01:30 | Daisuke Sumizawa v Yunseong Chung | 2-6,2-6 |
| ITF M25 Kashiwa | 2023/04/05 03:15 | Ryotaro Taguchi v Daisuke Sumizawa | 6-7,7-6,6-7 |
| ITF M25 Tsukuba | 2023/03/30 02:50 | Hiroki Moriya v Daisuke Sumizawa | 7-5,6-1 |
| ITF M25 Nakhon Si Thammarat | 2023/06/12 03:50 | Arslanbek Aitkulov v Daniil Savelev | 6-2,6-2 |
| ITF M15 Nakhon Si Thammarat | 2023/06/05 05:15 | Arslanbek Aitkulov v Blake Bayldon | 3-6,4-6 |
| ITF M15 Nakhon Si Thammarat | 2023/05/29 03:20 | Arslanbek Aitkulov v Julien De Cuyper | 1-6,6-3,7-10 |
| ITF M15 Tbilisi | 2023/05/02 11:10 | Arslanbek Aitkulov v Orel Kimhi | 1-6,0-6 |
| ITF M25 Tbilisi | 2023/05/01 06:00 | Ofer Hacohen v Arslanbek Aitkulov | 3-6,1-6 |
| ITF M25 Tbilisi | 2023/04/30 11:15 | Aleksandre Shvangiradze v Arslanbek Aitkulov | 2-6,2-6 |
| ITF M25 Tbilisi | 2023/04/25 07:00 | Sarp Agabigun v Arslanbek Aitkulov | 6-2,6-3 |
| ITF M25 Tbilisi | 2023/04/24 08:00 | Sanisth Juneja v Arslanbek Aitkulov | 2-6,3-6 |