Stadium: Court 6 Round: 26 Ground: Hardcourt indoor
| ITF M15 Petrohrad | 2021/04/13 11:30 | Patrik Rikl v Aristarkh Safonov | 6-4,6-2 |
| ITF M15 Petrohrad | 2021/04/07 08:50 | Gijs Brouwer v Patrik Rikl | 6-2,4-6,7-5 |
| ITF M15 Bratislava | 2021/03/12 09:00 | Fabian Marozsan v Patrik Rikl | 4-6,6-3,6-4 |
| ITF M15 Bratislava | 2021/03/11 09:00 | Patrik Rikl v Vitaliy Sachko | 6-4,3-6,6-3 |
| ITF M15 Bratislava | 2021/03/10 13:40 | Patrik Rikl v Amaury Raynel | 6-3,6-1 |
| ITF M15 Bratislava | 2021/03/05 12:20 | Patrik Rikl v Jurgen Briand | 5-7,1-6 |
| ITF M15 Bratislava | 2021/03/04 09:00 | Jonathan Eysseric v Patrik Rikl | 6-7,4-6 |
| ITF M15 Bratislava | 2021/03/02 12:00 | Lenny Hampel v Patrik Rikl | 3-6,7-6,2-6 |
| ITF M15 Petrohrad | 2021/04/14 07:00 | Yanki Erel v Alexander Cozbinov | 7-6,7-6 |
| ITF M15 Petrohrad | 2021/04/09 10:50 | Illya Beloborodko v Yanki Erel | 7-6,2-6,6-3 |
| ITF M15 Petrohrad | 2021/04/08 11:15 | Yanki Erel v Konstantin Kravchuk | 6-4,6-1 |
| ITF M15 Petrohrad | 2021/04/07 07:00 | Ivan Davydov v Yanki Erel | 2-6,3-6 |
| ITF M15 Petrohrad | 2021/04/05 06:55 | Yanki Erel v Dominik Recek | 7-5,6-2 |
| ITF M15 Petrohrad | 2021/04/04 08:25 | Yanki Erel v Mert Alkaya | 6-1,7-5 |
| ITF M15 - Antalya | 2021/03/17 08:00 | Vladimir Korolev v Yanki Erel | 2-6,6-0,6-1 |
| ITF M15 Kazaň | 2021/03/13 11:30 | Yanki Erel v Evgeny Philippov | 6-1,6-2 |