| ITF M15 Sharm El Sheikh | 11/08 12:30 | 62 | Ivan Sergeyev v Daisuke Sumizawa | 7-6,1-6,11-9 | |
| ITF M15 Sharm El Sheikh | 11/02 08:00 | 62 | Daisuke Sumizawa v Max Houkes | 3-6,6-7 | |
| ITF M15 Sharm El Sheikh | 11/01 09:30 | 62 | Amr Asrawy v Daisuke Sumizawa | 6-1,1-6,6-10 | |
| ITF M25 Geelong | 03/11 04:45 | 25 | Thomas Braithwaite v Daisuke Sumizawa | 6-0,6-3 | |
| ITF M25 Mildura | 03/05 05:30 | 25 | Daisuke Sumizawa v Luke Saville | 2-6,2-6 | |
| ITF M25 Nonthaburi | 01/26 10:25 | 44 | Daisuke Sumizawa v Soichiro Moritani | 2-6,4-6 | |
| ITF M15 Nonthaburi | 11/26 02:30 | 44 | Blake Ellis v Daisuke Sumizawa | 6-3,4-6,10-8 | |
| ITF M15 Nonthaburi | 11/25 03:50 | 44 | Natthasith Kunsuwan v Daisuke Sumizawa | 7-6,6-7,9-11 | |
| ITF M15 Nonthaburi | 11/24 09:00 | 44 | Noppadol Noikor v Daisuke Sumizawa | 2-6,5-7 | |
| Challenger Pune | 11/11 12:30 | 24 | Dhruv Sunish v Daisuke Sumizawa | 7-6,6-2 | |
| ITF M15 Meshref | 11/06 09:40 | 25 | Daisuke Sumizawa v Alec Adamson | 2-6,2-6 | |
| ITF M25 Tay Ninh | 10/11 03:10 | 27 | Daisuke Sumizawa v Billy Harris | 2-6,4-6 |