Stadium: Court 2 Round: 44 Ground: Clay
| ITF M15 Ulcinj | 2021/09/09 12:15 | Daisuke Sumizawa v Bastian Malla | 6-4,1-6,0-6 |
| ITF M15 Ulcinj | 2021/09/06 13:00 | Daisuke Sumizawa v Alessandro Procopio | 6-2,6-2 |
| ITF M15 Ulcinj | 2021/09/06 07:30 | Daisuke Sumizawa v Eric Morris | 7-6,6-1 |
| ITF M15 Cairo | 2021/08/04 12:45 | Daisuke Sumizawa v Ignacio Monzon | 3-6,1-6 |
| ITF M15 Cairo | 2021/07/28 09:40 | Luca Tomasetto v Daisuke Sumizawa | 4-6,6-1,6-1 |
| ITF M15 Cairo | 2021/07/27 08:00 | Daisuke Sumizawa v Mauro De Maio | 6-3,6-2 |
| ITF M15 Cairo | 2021/07/26 08:00 | Daisuke Sumizawa v Matteo De Vincentis | 6-7,6-4,10-3 |
| ITF M15 Cairo | 2021/07/25 07:00 | Daisuke Sumizawa v Atharva Sharma | 6-1,6-1 |
| ITF M15 Ulcinj | 2021/09/12 09:30 | Milo Gazivoda v Nicolo Inserra | 2-6,4-6 |
| ITF M25 Lesa | 2021/08/23 09:30 | Nicolo Inserra v Giannicola Misasi | 5-7,5-7 |
| ITF M25 Lesa | 2021/08/22 07:00 | Nicolo Inserra v Tobias Kirchlechner | 6-4,6-1 |
| ITF M15 Pescara | 2021/08/16 07:30 | Maxence Broville v Nicolo Inserra | 6-3,6-2 |
| ITF M15 Pescara | 2021/08/15 11:00 | Nicolo Inserra v Luca Parenti | 6-3,7-5 |
| ITF M15 Perugia | 2021/07/19 14:30 | Nicolo Inserra v Federico Bertuccioli | 6-4,3-6,6-10 |
| ITF M15 Perugia | 2021/07/18 12:00 | Igor Solomatin v Nicolo Inserra | 4-6,2-6 |
| ITF M25 Casinalbo | 2021/07/06 11:30 | Nicolo Inserra v Riccardo Balzerani | 6-3,0-6,3-6 |