| ITF M15 Sozopol | 2022/10/11 07:00 | Gabriel Donev v Petr Nesterov | 6-3,7-6 |
| UTR Pro Sofia | 2023/09/09 06:30 | Petr Nesterov v Nicolas Buitrago | 6-4,6-3 |
| UTR Pro Sofia | 2023/09/08 06:30 | Christos Antonopoulos v Petr Nesterov | 6-7,4-6 |
| UTR Pro Sofia | 2023/09/07 08:00 | Wadym Konowczuk v Petr Nesterov | 6-3,0-6,2-6 |
| UTR Pro Sofia | 2023/09/06 05:00 | Mert Ramadan v Petr Nesterov | 4-6,4-6 |
| UTR Pro Sofia | 2023/09/04 08:00 | Enrique Bogo v Petr Nesterov | 3-6,4-6 |
| ITF M15 Bucharest | 2023/09/02 10:40 | Bogdan Pavel v Petr Nesterov | 7-6,4-6,6-4 |
| ITF M15 Bucharest | 2023/09/01 08:00 | Dan Alexandru Tomescu v Petr Nesterov | 4-6,6-3,4-6 |
| ITF M15 Bucharest | 2023/08/31 07:00 | Stefan A Andreescu v Petr Nesterov | 4-6,0-6 |
| UTR Pro Sofia | 2023/09/09 08:52 | Hernando J E Isnardi v Gabriel Donev | 2-6,3-6 |
| UTR Pro Sofia | 2023/09/08 05:00 | Gabriel Donev v Milen Ianakiev | 6-3,5-2 |
| UTR Pro Sofia | 2023/09/07 06:30 | Gabriel Donev v Christos Keisidis | 6-3,6-2 |
| UTR Pro Sofia | 2023/09/06 05:00 | Janos Fekete v Gabriel Donev | 0-6,6-3,3-6 |
| UTR Pro Sofia | 2023/09/05 09:02 | Sergo Sikharulidze v Gabriel Donev | 0-6,3-6 |
| ITF M15 Kursumlijska Banja | 2023/08/30 09:05 | Gabriel Donev v Alessandro Bellifemine | 3-6,6-4,2-6 |
| ITF M15 Targu Jiu | 2023/08/15 13:45 | Lorenzo Joaquin Rodriguez v Gabriel Donev | 6-7,7-6,6-4 |
| ITF M15 Curtea de Arges | 2023/08/09 10:35 | Gabriel Donev v Luciano Emanuel Ambrogi | 0-6,4-6 |