Stadium: Court 3 Round: 25 Ground: Clay
| ITF M15 Bergamo | 2021/06/23 07:30 | Danylo Kalenichenko v Edoardo Eremin | 1-6,4-6 |
| ITF M15 Novomoskovsk | 2021/06/06 07:00 | Danylo Kalenichenko v Matias Zukas | 4-6,6-0,4-6 |
| ITF M15 Novomoskovsk | 2021/06/05 07:30 | Alex M Pujolras v Danylo Kalenichenko | 4-6,6-2,4-6 |
| ITF M15 Novomoskovsk | 2021/06/04 12:30 | Danylo Kalenichenko v Alexander Zgirovsky | 6-2,6-3 |
| ITF M15 Novomoskovsk | 2021/06/04 09:30 | Danylo Kalenichenko v Fermin Tenti | 6-1,6-4 |
| ITF M15 Novomoskovsk | 2021/06/03 14:00 | Danylo Kalenichenko v Bruno P Navarro | 3-6,6-4,10-7 |
| ITF M15 Novomoskovsk | 2021/05/26 06:15 | Danylo Kalenichenko v Fermin Tenti | 4-6,2-6 |
| ITF M15 Prijedor | 2021/05/14 10:40 | Danylo Kalenichenko v Nerman Fatic | 5-7,2-6 |
| ITF M25 Marburg | 2021/07/05 09:30 | Kirill Kivattsev v Andres Gabriel Ciurletti | 6-7,6-7 |
| ITF M15 Bergamo | 2021/06/22 11:40 | Federico Arnaboldi v Kirill Kivattsev | 6-4,6-2 |
| ITF M15 Bergamo | 2021/06/21 09:55 | Matvey Minin v Kirill Kivattsev | 2-6,4-6 |
| ITF M15 Genova | 2021/06/15 12:15 | Kirill Kivattsev v Tomas Jirousek | 7-6,6-4 |
| ITF M15 Genova | 2021/06/14 07:00 | Kirill Kivattsev v Raphael Baltensperger | 7-6,7-6 |
| ITF M15 Gaiba | 2021/06/12 11:00 | Kirill Kivattsev v Mats Rosenkranz | 2-6,4-6 |
| ITF M15 Gaiba | 2021/06/11 09:00 | Alessandro Bega v Kirill Kivattsev | 6-7,3-6 |
| ITF M15 Gaiba | 2021/06/10 08:45 | Davide Galoppini v Kirill Kivattsev | 6-7,2-6 |