Stadium: Court 2 Round: 62 Ground: Clay
| ITF M15 Antalya | 2021/06/06 07:30 | Dmitrii Vasilev v Efe Comu | 6-3,6-7,10-8 |
| ITF M15 Novomoskovsk | 2021/05/31 06:15 | Alexander Zgirovsky v Dmitrii Vasilev | 6-1,6-1 |
| ITF M15 Skopje | 2021/05/30 12:30 | Dmitrii Vasilev v Samuele Pieri | 4-6,4-6 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Tommaso Vescovi v Dmitrii Vasilev | 6-7,5-7 |
| ITF M15 Novomoskovsk | 2021/05/23 08:00 | Michal Mikula v Dmitrii Vasilev | 6-1,6-3 |
| ITF M15 Antalya | 2021/05/17 07:00 | Dmitrii Vasilev v Daisuke Sumizawa | 6-7,4-6 |
| ITF M15 Antalya | 2021/05/16 07:00 | Dmitrii Vasilev v Essa Qabazard | 4-6,7-6,10-3 |
| ITF M15 Sharm El Sheikh | 2021/02/21 15:30 | Andres Gabriel Ciurletti v Dmitrii Vasilev | 7-5,6-0 |
| ITF M15 Skopje | 2021/06/01 09:30 | Stefano Battaglino v Taiyo Yamanaka | 3-6,6-1,10-7 |
| ITF M15 Skopje | 2021/05/31 11:00 | Besir Durguti v Taiyo Yamanaka | 2-6,2-6 |
| ITF M15 Skopje | 2021/05/30 08:00 | Dax Donders v Taiyo Yamanaka | 4-6,4-6 |
| ITF M15 Bucharest | 2021/05/25 07:00 | Jaimee Floyd Angele v Taiyo Yamanaka | 6-1,6-4 |
| ITF M15 Bucharest | 2021/05/24 08:00 | Samuil Konov v Taiyo Yamanaka | 4-6,0-6 |
| ITF M15 Bucharest | 2021/05/23 10:00 | Kuzey Cekirge v Taiyo Yamanaka | 3-6,4-6 |
| ITF M15 Sibenik | 2021/05/19 14:50 | Yann Marti v Taiyo Yamanaka | 6-3,6-4 |
| ITF M15 Sibenik | 2021/05/17 11:00 | Jan Kupcic v Taiyo Yamanaka | 5-7,6-0,4-10 |