Stadium: Court 22 Round: 62 Ground: Clay
| ITF M15 Antalya | 2021/05/09 07:00 | Daisuke Sumizawa v Ignacio Carou | 6-2,1-6,8-10 |
| ITF M15 Antalya | 2021/05/02 06:00 | Orlando Luz v Daisuke Sumizawa | 6-1,6-2 |
| ITF M15 Sharm El Sheikh | 2021/03/03 09:25 | Daisuke Sumizawa v Luca Nardi | 4-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/03/02 09:20 | Arvid Nordquist v Daisuke Sumizawa | 4-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/03/01 10:00 | Matas Vasiliauskas v Daisuke Sumizawa | 0-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/02/28 11:00 | Alberto Morolli v Daisuke Sumizawa | 3-6,1-6 |
| ITF M15 Sharm El Sheikh | 2021/02/23 07:30 | Lukas Krainer v Daisuke Sumizawa | 3-6,6-3,10-5 |
| ITF M15 Sharm El Sheikh | 2021/02/22 07:30 | Jose Pereira v Daisuke Sumizawa | 6-7,7-6,8-10 |