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 M25 Taipei | 2025/08/28 04:01 | Daisuke Sumizawa v Yanki Erel | 2-6,2-6 |
| ITF M25 Taipei | 2025/08/26 04:06 | Daisuke Sumizawa v Adrian Arcon | 2-6,6-4,5-0 |
| ITF M15 Nakhon Pathom | 2025/08/20 04:30 | Junhyun Lee v Daisuke Sumizawa | 3-6,6-4,6-1 |
| ITF M15 Wuning | 2025/08/02 10:00 | Daisuke Sumizawa v Yuta Kikuchi | 3-6,2-6 |
| ITF M15 Wuning | 2025/08/01 10:00 | Tianhui Zhang v Daisuke Sumizawa | 6-3,2-6,0-3 |
| ITF M15 Wuning | 2025/07/31 12:10 | Makoto Ochi v Daisuke Sumizawa | 3-6,6-4,5-7 |
| ITF M15 Wuning | 2025/07/30 12:24 | Yuya Hirose v Daisuke Sumizawa | 3-6,1-6 |
| ITF M15 Wuning | 2025/07/27 01:00 | Sanhui Shin v Daisuke Sumizawa | 6-4,6-0 |
| ITF M25 Taipei | 2025/08/19 02:00 | Ryotaro Taguchi v Takuya Kumasaka | 6-7,6-4,0-0 |
| ITF M25 Yinchuan | 2025/08/15 03:30 | Tianhui Zhang v Takuya Kumasaka | 6-1,6-2 |
| ITF M25 Yinchuan | 2025/08/14 02:00 | Wishaya Trongcharoenchaikul v Takuya Kumasaka | 4-6,4-6 |
| ITF M25 Yinchuan | 2025/08/13 03:30 | Sheng Tang v Takuya Kumasaka | 0-6,4-6 |
| Challenger Astana | 2025/07/30 05:00 | Takuya Kumasaka v Nicolai Budkov Kjaer | 3-6,4-6 |
| ITF M15 Nakhon Pathom | 2025/07/27 02:00 | Jake Delaney v Takuya Kumasaka | 6-2,6-2 |
| ITF M15 Nakhon Pathom | 2025/07/26 02:00 | Takuya Kumasaka v Uisung Park | 4-6,6-2,7-6 |
| ITF M15 Nakhon Pathom | 2025/07/25 02:00 | Siwanat Auytayakul v Takuya Kumasaka | 4-6,5-7 |