Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| UTR Pro Tennis Series Pazardzhik | 2021/07/18 09:00 | Yanaki Milev v Milushev, Plamen | 3-6,6-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/17 09:00 | Dzhavakian, Yurii v Yanaki Milev | 4-6,2-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/16 06:00 | Kirkov, Vasil v Yanaki Milev | 6-1,6-1 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/15 09:00 | Gorazd Srbljak v Yanaki Milev | 6-3,6-2 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/13 10:30 | Vladimir Popov v Yanaki Milev | 4-6,6-4,2-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/07/12 06:00 | Yanaki Milev v Aleksandr Braynin | 7-6,4-6,4-6 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/10 10:30 | Lescure, Mick v Yanaki Milev | 4-6,6-3,5-3 |
| UTR Pro Tennis Series Pazardzhik | 2021/04/09 10:30 | Yanaki Milev v Milushev, Plamen | 6-3,6-7,2-6 |
| ITF M15 Curtea de Arges | 2021/08/10 07:00 | Apostol, Bogdan Ionut v Vlad Andrei Dancu | 3-6,4-6 |
| ITF M15 Curtea de Arges | 2021/08/09 07:00 | Apostol, Bogdan Ionut v Louis Allen | 6-2,6-3 |
| ITF M25 Pitesti | 2021/08/03 09:50 | Chun Hsin Tseng v Apostol, Bogdan Ionut | 3-6,6-3,7-5 |
| ITF M25 Kottingbrunn | 2021/07/23 08:30 | Apostol, Bogdan Ionut v Hampel, Lenny | 1-6,6-4,5-7 |
| ITF M25 Kottingbrunn | 2021/07/22 08:00 | Podzus, Martins v Apostol, Bogdan Ionut | 6-3,1-6,4-6 |
| ITF M25 Kottingbrunn | 2021/07/21 10:00 | Apostol, Bogdan Ionut v Kalenichenko, Danylo | 1-6,6-4,6-2 |
| ITF M25 Telfs | 2021/07/19 09:00 | Apostol, Bogdan Ionut v Filip Misolic | 6-7,1-6 |
| ITF M25 Telfs | 2021/07/18 14:30 | Apostol, Bogdan Ionut v Lukas Neumayer | 6-7,6-2,6-4 |