Stadium: Court 4 Round: 29 Ground: Hardcourt indoor
| ITF M15 St Petersburg | 2021/04/17 08:00 | Naoki Tajima v Savriyan Danilov | 4-6,2-6 |
| ITF M15 St Petersburg | 2021/04/16 08:00 | Marat Sharipov v Savriyan Danilov | 4-6,4-6 |
| ITF M15 St Petersburg | 2021/04/15 13:40 | Matvey Minin v Savriyan Danilov | 3-6,1-6 |
| ITF M15 St Petersburg | 2021/04/13 13:45 | Daniil Golubev v Savriyan Danilov | 2-6,1-6 |
| ITF M15 St Petersburg | 2021/04/07 07:00 | Savriyan Danilov v Matic Spec | 3-6,2-6 |
| ITF M15 Kazan | 2021/03/10 07:00 | Savriyan Danilov v Sergey Bolotov | 6-7,2-6 |
| Challenger Nur-Sultan | 2021/02/21 05:15 | Aleksandr Nedovyesov v Savriyan Danilov | 6-4,6-4 |
| ITF M15 St Petersburg | 2021/02/10 07:00 | Boris Pokotilov v Savriyan Danilov | 6-7,7-6,7-6 |
| ITF M15 St Petersburg | 2021/04/17 09:45 | Matic Spec v Yanki Erel | 6-7,2-6 |
| ITF M15 St Petersburg | 2021/04/16 09:30 | Yanki Erel v Sarp Agabigun | 6-4,6-1 |
| ITF M15 St Petersburg | 2021/04/15 12:00 | Patrik Rikl v Yanki Erel | 3-6,5-7 |
| ITF M15 St Petersburg | 2021/04/14 07:00 | Yanki Erel v Alexander Cozbinov | 7-6,7-6 |
| ITF M15 St Petersburg | 2021/04/09 10:50 | Illya Beloborodko v Yanki Erel | 7-6,2-6,6-3 |
| ITF M15 St Petersburg | 2021/04/08 11:15 | Yanki Erel v Konstantin Kravchuk | 6-4,6-1 |
| ITF M15 St Petersburg | 2021/04/07 07:00 | Ivan Davydov v Yanki Erel | 2-6,3-6 |
| ITF M15 St Petersburg | 2021/04/05 06:55 | Yanki Erel v Dominik Recek | 7-5,6-2 |