Stadium: 9 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Kursumlijska Banja | 2024/05/14 09:55 | Daisuke Sumizawa v Keisuke Saitoh | 4-6,7-5,3-6 |
| ITF M15 Kashiwa | 2024/04/04 01:30 | Daisuke Sumizawa v Keisuke Saitoh | 5-7,2-6 |
| ITF M25 Sapporo | 2022/08/30 02:55 | Keisuke Saitoh v Daisuke Sumizawa | 5-7,6-3,4-6 |
| ITF M15 Sharm El Sheikh | 2021/02/16 09:25 | Daisuke Sumizawa v Keisuke Saitoh | 2-6,4-6 |