Stadium: Court 1 Round: 62 Ground: Clay
| ITF M15 Sozopol | 2021/10/15 10:00 | Ben Patael v Simeon Terziev | 6-4,6-2 |
| ITF M15 Sozopol | 2021/10/14 15:10 | Simeon Terziev v Alexander Donski | 6-4,6-4 |
| ITF M15 Sozopol | 2021/10/13 14:00 | George Tsivadze v Simeon Terziev | 2-6,0-2 |
| ITF M15 Sozopol | 2021/10/05 10:00 | Simeon Terziev v Billy Harris | 1-6,5-7 |
| ITF M15 Sozopol | 2021/09/16 08:00 | Valentin Vacherot v Simeon Terziev | 6-0,6-3 |
| ITF M15 Sozopol | 2021/09/14 10:00 | Simeon Terziev v Dinko Dinev | 6-4,6-2 |
| UTR Pro Tennis Series Sofia | 2021/09/02 10:00 | Simeon Terziev v Yurii Dzhavakian | 3-6,7-6,3-6 |
| UTR Pro Tennis Series Sofia | 2021/09/01 06:30 | Simeon Terziev v Adriano Dzhenev | 6-1,6-2 |
| ITF M15 Antalya | 2021/11/15 06:30 | Gorazd Srbljak v Berk Bugarikj | 6-4,5-7,10-5 |
| ITF M15 Antalya | 2021/11/14 06:30 | Berk Bugarikj v David Bulbulian | 6-0,6-2 |
| ITF M15 Antalya | 2021/11/10 08:40 | Berk Bugarikj v Ilya Snitari | 3-6,0-6 |
| ITF M15 Antalya | 2021/11/03 09:35 | Berk Bugarikj v Andrey Chepelev | 3-6,3-6 |
| ITF M15 Antalya | 2021/11/03 06:00 | Berk Bugarikj v Giovanni Rizzuti | 6-2,6-2 |
| ITF M15 Antalya | 2021/11/02 08:30 | Koray Kirci v Berk Bugarikj | 4-6,4-6 |
| ITF M15 Antalya | 2021/10/31 07:00 | Berk Bugarikj v Tamerlan Azizov | 6-7,7-6,10-3 |
| ITF M15 Antalya | 2021/10/24 07:00 | Berk Bugarikj v Matias P D L Gomila | 6-4,3-6,8-10 |