Stadium: Court 1 Round: 28 Ground: Clay
| ITF M15 St Petersburg | 2021/04/18 08:55 | Savriyan Danilov v Yanki Erel | 1-6,4-6 |
| 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 Las Palmas | 2021/04/25 11:00 | Oleg Prihodko v Thomas Deschamps | 3-6,1-6 |
| ITF M15 Antalya | 2021/04/14 12:55 | Oleg Prihodko v Stefan Palosi | 2-6,4-6 |
| ITF M15 Antalya | 2021/04/08 07:00 | Dragos Nicolae Madaras v Oleg Prihodko | 6-1,6-0 |
| ITF M15 Antalya | 2021/04/07 06:55 | Michel Vernier v Oleg Prihodko | 5-7,4-6 |
| ITF M15 Antalya | 2021/04/06 07:00 | Oleg Prihodko v Bautista Vilicich | 6-3,6-4 |
| ITF M15 Antalya | 2021/04/05 07:00 | Oleg Prihodko v Edouard Villoslada | 6-3,6-0 |
| ITF M15 Antalya | 2021/04/04 06:30 | Oleg Prihodko v Kristof Minarik | 6-4,6-2 |
| ITF M25 La Nucia | 2021/03/15 09:30 | Oleg Prihodko v Jaime Caldes | 5-7,7-5,2-10 |