Stadium: Court 6 Round: 26 Ground: Clay
| ITF - M15 Cairo | 2021/07/21 08:00 | Sergei Pogosian v Daisuke Sumizawa | 2-6,4-6 |
| ITF - M15 Antalya | 2021/06/03 07:30 | Pietro Rondoni v Daisuke Sumizawa | 6-3,6-2 |
| ITF - M15 Antalya | 2021/06/02 09:20 | Daisuke Sumizawa v Santiago De La Fuente | 5-7,7-5,7-5 |
| ITF - M15 Antalya | 2021/06/01 07:00 | Daisuke Sumizawa v Nicolas Parizzia | 4-6,6-1,6-10 |
| ITF - M15 Antalya | 2021/05/31 07:30 | Daisuke Sumizawa v Bora Sengul | 6-1,7-6 |
| ITF - M15 Antalya | 2021/05/23 07:30 | Daisuke Sumizawa v Miguel Fernando Pereira | 4-6,1-6 |
| ITF - M15 Antalya | 2021/05/18 07:00 | Mariano Navone v Daisuke Sumizawa | 6-3,6-1 |
| ITF - M15 Antalya | 2021/05/17 07:00 | Dmitrii Vasilev v Daisuke Sumizawa | 6-7,4-6 |
| ITF - M15 Cairo | 2021/07/21 08:00 | Lautaro Agustin Falabella v Lorenzo Bocchi | 3-6,2-6 |
| ITF - M15 L'Aquila | 2021/07/15 14:20 | Lorenzo Bocchi v Marcello Serafini | 3-6,5-7 |
| ITF - M15 L'Aquila | 2021/07/14 09:50 | Lorenzo Bocchi v Roman Andres Burruchaga | 7-5,3-6,7-5 |
| ITF - M15 Bergamo | 2021/06/23 18:35 | Juan Ignacio Galarza v Lorenzo Bocchi | 6-2,6-2 |
| ITF - M15 Bergamo | 2021/06/22 14:35 | Gabriele Piraino v Lorenzo Bocchi | 7-6,2-6,3-10 |
| ITF - M15 Gaiba | 2021/06/08 08:45 | Lorenzo Bocchi v Federico Bertuccioli | 6-7,0-6 |
| ITF - M15 Brcko | 2021/05/19 08:30 | Lorenzo Bocchi v Otto Virtanen | 5-7,6-2,3-6 |
| ITF - M15 Cairo | 2021/05/05 15:40 | Lorenzo Bocchi v Simon A Ivanov | 6-4,4-6,2-6 |