Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Sharm El Sheikh | 2020/11/08 12:30 | Ivan Sergeyev v Daisuke Sumizawa | 7-6,1-6,11-9 |
| ITF M15 Sharm El Sheikh | 2020/11/02 08:00 | Daisuke Sumizawa v Max Houkes | 3-6,6-7 |
| ITF M15 Sharm El Sheikh | 2020/11/01 09:30 | Amr Asrawy v Daisuke Sumizawa | 6-1,1-6,6-10 |
| ITF M25 Geelong | 2020/03/11 04:45 | Thomas Braithwaite v Daisuke Sumizawa | 6-0,6-3 |
| ITF M25 Mildura | 2020/03/05 05:30 | Daisuke Sumizawa v Luke Saville | 2-6,2-6 |
| ITF M25 Nonthaburi | 2020/01/26 10:25 | Daisuke Sumizawa v Soichiro Moritani | 2-6,4-6 |
| ITF M15 Nonthaburi | 2019/11/26 02:30 | Blake Ellis v Daisuke Sumizawa | 6-3,4-6,10-8 |
| ITF M15 Nonthaburi | 2019/11/25 03:50 | Natthasith Kunsuwan v Daisuke Sumizawa | 7-6,6-7,9-11 |
| ITF M15 Kolkata | 2020/03/12 04:00 | Niklas Schell v Nitin Kumar Sinha | 6-3,3-6,0-6 |
| ITF M25 Nonthaburi | 2020/02/03 04:55 | Nitin Kumar Sinha v Austin Rapp | 1-6,6-3,8-10 |
| ITF M25 Nonthaburi | 2020/02/02 09:45 | Nitin Kumar Sinha v Shisanuphong Pokinsagethasiri | 6-3,2-6,13-11 |
| ITF M15 Antalya | 2020/01/29 06:00 | Nitin Kumar Sinha v Tristan Meraut | 2-6,6-7 |
| ITF M15 Antalya | 2020/01/27 07:00 | Nitin Kumar Sinha v Emir Sendogan | 6-2,6-3 |
| ITF M15 Antalya | 2020/01/23 07:00 | Miljan Zekic v Nitin Kumar Sinha | 7-6,6-1 |
| ITF M15 Antalya | 2020/01/22 10:35 | Jonathan Eysseric v Nitin Kumar Sinha | 4-6,4-6 |
| ITF M15 Antalya | 2020/01/14 08:30 | Julien Cagnina v Nitin Kumar Sinha | 6-2,6-2 |