Ground: Hardcourt outdoor
| ITF M15 Hinode | 2025/03/13 06:22 | Daisuke Sumizawa v Takuya Kumasaka | 6-3,3-6,5-7 |
| ITF M25 Anseong | 2023/06/22 04:00 | Daisuke Sumizawa v Takuya Kumasaka | 7-5,7-6 |
| ITF M15 Luan | 2025/06/03 05:41 | Mason Naumovski v Daisuke Sumizawa | 1-6,4-1 |
| ITF M15 Luan | 2025/05/31 02:00 | Daisuke Sumizawa v Jie Cui | 3-6,1-6 |
| ITF M15 Luan | 2025/05/30 02:00 | Taiyo Yamanaka v Daisuke Sumizawa | 6-7,4-6 |
| ITF M15 Luan | 2025/05/29 03:30 | Daisuke Sumizawa v Ye Cong Mo | 4-6,6-3,4-2 |
| ITF M15 Luan | 2025/05/27 02:00 | Daisuke Sumizawa v Qian Sun | 7-5,6-2 |
| ITF M15 Osaka | 2025/04/24 02:30 | Koki Matsuda v Daisuke Sumizawa | 3-6,6-4,7-6 |
| ITF M15 Osaka | 2025/04/23 03:30 | Daisuke Sumizawa v Kousuke Ogura | 6-1,5-7,7-6 |
| ITF M15 Kashiwa | 2025/04/04 03:15 | Daisuke Sumizawa v Shunsuke Nakagawa | 6-7,6-2,2-6 |
| ITF M25 Luzhou | 2025/06/21 02:00 | Takuya Kumasaka v Luca Castelnuovo | 1-6,1-6 |
| ITF M25 Luzhou | 2025/06/20 03:00 | Takuya Kumasaka v Evan Zhu | 7-5,6-0 |
| ITF M25 Luzhou | 2025/06/19 02:00 | Takuya Kumasaka v Uisung Park | 6-4,7-6 |
| ITF M25 Luzhou | 2025/06/17 05:00 | Takuya Kumasaka v Naoya Honda | 6-1,6-2 |
| ITF M15 Luan | 2025/06/13 02:30 | Takuya Kumasaka v Wishaya Trongcharoenchaikul | 3-6,6-7 |
| ITF M15 Luan | 2025/06/12 05:37 | Takuya Kumasaka v Sidharth Rawat | 6-3,6-2 |
| ITF M15 Luan | 2025/06/11 08:39 | Takuya Kumasaka v Emiliano Jorquera | 6-2,6-1 |
| ITF M15 Osaka | 2025/04/24 02:30 | Yuta Kawahashi v Takuya Kumasaka | 7-6,5-7,1-4 |