Stadium: Court 2 Round: 25 Ground: Clay
| ITF M15 Antalya | 2021/03/30 08:30 | Pol Martin Tiffon v Constantin Schmitz | 6-4,7-6 |
| ITF M15 Antalya | 2021/03/26 07:00 | Georgii Kravchenko v Constantin Schmitz | 6-2,6-3 |
| ITF M15 Antalya | 2021/03/24 07:30 | Constantin Schmitz v Pedro Vives Marcos | 6-3,6-3 |
| ITF M15 Monastir | 2021/03/10 10:30 | Yannick Mertens v Constantin Schmitz | 6-0,6-2 |
| ITF M15 Monastir | 2021/03/04 08:30 | Mateus Alves v Constantin Schmitz | 6-3,6-4 |
| ITF M15 Monastir | 2021/03/02 08:30 | Constantin Schmitz v Christoph Negritu | 6-4,7-6 |
| ITF M15 Monastir | 2021/02/23 08:00 | Constantin Schmitz v Jose Fco. Vidal Azorin | 6-4,3-6,4-6 |
| ITF M15 Alkmaar | 2020/08/25 14:30 | Constantin Schmitz v Benjamin Hassan | 4-6,6-3,3-6 |
| ITF M15 Antalya | 2021/04/01 07:30 | Matteo Gigante v Bogdan Bobrov | 7-5,7-6 |
| ITF M15 Antalya | 2021/03/31 10:25 | Viacheslav Bielinskyi v Bogdan Bobrov | 2-6,3-6 |
| ITF M15 Kazan | 2021/03/11 11:25 | Evgeny Philippov v Bogdan Bobrov | 7-6,6-2 |
| ITF M15 Kazan | 2021/03/10 16:10 | Yan Sabanin v Bogdan Bobrov | 4-6,5-7 |
| Challenger Nur-Sultan | 2021/03/01 04:00 | Tung-Lin Wu v Bogdan Bobrov | 7-5,7-5 |
| Challenger Nur-Sultan Qual | 2021/02/28 05:55 | Grigoriy Lomakin v Bogdan Bobrov | 4-6,3-6 |
| Challenger Nur-Sultan | 2021/02/23 04:00 | Bogdan Bobrov v Kacper Zuk | 2-6,1-6 |
| Challenger Nur-Sultan | 2021/02/22 06:10 | Roberto Quiroz v Bogdan Bobrov | 4-6,7-5,4-6 |