Stadium: CENTER COURT (7) Round: 26 Ground: Clay
| ITF - M15 Ulčinj | 2021/09/06 13:00 | Daisuke Sumizawa v Alessandro Procopio | 6-2,6-2 |
| ITF - M15 Ulčinj | 2021/09/06 07:30 | Daisuke Sumizawa v Eric Morris | 7-6,6-1 |
| ITF - M15 Káhira | 2021/08/04 12:45 | Daisuke Sumizawa v Ignacio Monzon | 3-6,1-6 |
| ITF - M15 Káhira | 2021/07/28 09:40 | Luca Tomasetto v Daisuke Sumizawa | 4-6,6-1,6-1 |
| ITF - M15 Káhira | 2021/07/27 08:00 | Daisuke Sumizawa v Mauro De Maio | 6-3,6-2 |
| ITF - M15 Káhira | 2021/07/26 08:00 | Daisuke Sumizawa v Matteo De Vincentis | 6-7,6-4,10-3 |
| ITF - M15 Káhira | 2021/07/25 07:00 | Daisuke Sumizawa v Atharva Sharma | 6-1,6-1 |
| ITF - M15 Káhira | 2021/07/22 08:00 | Daisuke Sumizawa v Lorenzo Bocchi | 0-6,2-6 |
| ITF - M15 Ulčinj | 2021/09/08 11:55 | Florent Bax v Bastian Malla | 1-6,0-6 |
| ITF - M15 Žilina | 2021/09/05 07:55 | Bastian Malla v Fabian Marozsan | 6-1,3-6,1-6 |
| ITF - M15 Žilina | 2021/09/04 08:00 | Bastian Malla v Adria Soriano Barrera | 6-2,6-1 |
| ITF - M15 Žilina | 2021/09/03 09:25 | Peter Goldsteiner v Bastian Malla | 0-6,1-6 |
| ITF - M15 Žilina | 2021/09/02 08:00 | Francesco Vilardo v Bastian Malla | 1-6,1-6 |
| ITF - M15 Žilina | 2021/09/01 08:00 | Lukas Palovic v Bastian Malla | 2-6,6-7 |
| ITF - M15 Bratislava | 2021/08/19 10:55 | Bastian Malla v Tomas Liska | 4-6,6-4,2-6 |
| ITF - M15 Bratislava | 2021/08/18 08:00 | Bastian Malla v Zsombor Velcz | 6-2,6-2 |