Round: 25 Ground: Hardcourt outdoor
| ITF M15 Sozopol | 2021/10/07 07:00 | Kai Wehnelt v George Tsivadze | 6-3,6-1 |
| ITF M15 Sozopol | 2021/10/05 09:00 | Dragomir Draganov v George Tsivadze | 3-6,2-6 |
| ITF M15 Sozopol | 2021/09/16 08:00 | Simon A Ivanov v George Tsivadze | 7-6,6-0 |
| ITF M15 Sozopol | 2021/09/15 07:00 | Plamen Milushev v George Tsivadze | 4-6,3-6 |
| ITF M15 Telavi | 2021/08/03 08:05 | Timur Khabibulin v George Tsivadze | 6-1,6-2 |
| ITF M25 Telavi | 2021/07/30 08:25 | George Tsivadze v Julian Cash | 6-7,4-6 |
| ITF M15 Tbilisi | 2021/05/18 12:25 | Lorenzo Rottoli v George Tsivadze | 7-6,6-4 |
| ITF M15 Dauhá | 2020/03/11 13:55 | Razvan M Codescu v George Tsivadze | 1-6,0-6 |
| 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 |
| UTR Pro Tennis Series - Sofia | 2021/08/31 11:00 | Simeon Terziev v Veselin Kiselkov | 6-1,5-0 |
| UTR Pro Tennis Series - Sofia | 2021/08/30 10:00 | Ioan Alexandru Chirita v Simeon Terziev | 4-6,6-3,3-6 |
| ITF M25 Pitesti | 2021/08/04 05:55 | Corentin Denolly v Simeon Terziev | 6-3,7-5 |