Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| 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 Tsukuba | 2023/03/29 03:30 | Daisuke Sumizawa v Makoto Ochi | 1-6,7-5,6-4 |
| ITF M25 Jakarta | 2023/04/12 02:00 | Hady Habib v Maximus Jones | 6-4,6-7,6-4 |
| ITF M25 Jakarta | 2023/04/11 02:00 | Jie Cui v Maximus Jones | 6-4,1-6,8-10 |
| ITF M25 Jakarta | 2023/04/10 07:40 | Damian Rodriguez v Maximus Jones | 1-6,2-6 |
| ITF M25 Kashiwa | 2023/04/02 04:00 | Maximus Jones v Ryotaro Taguchi | 6-7,5-7 |
| ITF M25 Tsukuba | 2023/03/27 00:30 | Maximus Jones v Ryotaro Taguchi | 4-6,0-6 |
| Challenger Nonthaburi | 2023/01/15 04:50 | Makoto Ochi v Maximus Jones | 6-3,6-3 |
| Challenger Nonthaburi | 2023/01/09 03:00 | Maximus Jones v Evgeny Donskoy | 2-6,2-6 |
| Challenger Nonthaburi | 2023/01/08 04:15 | Michael Vrbensky v Maximus Jones | 6-3,6-7,4-6 |