Ground: Hardcourt outdoor
| ITF M25 Sapporo | 2024/09/06 03:00 | Jacob Brumm v Daisuke Sumizawa | 6-2,4-6,4-6 |
| 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 |
| Challenger Barranquilla | 2025/08/12 16:00 | Jacob Brumm v Juan Sebastian Gomez | 5-7,4-6 |
| Challenger Barranquilla | 2025/08/11 15:00 | Jacob Brumm v Brandon Perez | 7-5,6-2 |
| Challenger Barranquilla | 2025/08/10 20:00 | Jacob Brumm v Alejandro Arcila | 7-5,3-6,6-2 |
| ITF M25 Southaven | 2025/08/06 18:20 | Jacob Brumm v Nicolas Kotzen | 3-6,6-7 |
| ITF M25 Edwardsville | 2025/07/31 13:30 | Jacob Brumm v Siphosothando Montsi | 3-6,2-6 |
| ITF M25 Edwardsville | 2025/07/30 13:00 | Jacob Brumm v Alexander Bernard | 6-2,6-4 |
| ITF M25 Champaign | 2025/07/22 17:29 | Leo Vithoontien v Jacob Brumm | 6-3,6-4 |
| ITF M25 Louisville | 2025/07/17 14:00 | Kelly Giese v Jacob Brumm | 4-6,6-3,6-1 |