Estádio: Court 8 Round: 44 Ground: Hardcourt outdoor
| ITF - M15 Sozopol | 2021/10/03 09:00 | Berk Ilkel v Enes Donmezer | 3-6,7-6,10-7 |
| ITF - M15 Antália | 2021/06/13 07:30 | Egor Matvievici v Enes Donmezer | 6-3,6-2 |
| ITF - M15 Antália | 2021/06/06 07:30 | Suleyman Deniz Gursoy v Enes Donmezer | 7-6,6-1 |
| ITF - M15 Antália | 2021/05/30 07:30 | Enes Donmezer v Francisco Llanes | 2-6,2-6 |
| ITF - M15 Antália | 2021/05/23 07:30 | Enes Donmezer v Bastien Presuhn | 6-3,1-6,3-10 |
| ITF - M15 Antália | 2021/05/02 06:00 | Mattia Rossi v Enes Donmezer | 6-7,6-3,11-9 |
| ITF - M15 Antália | 2021/04/11 07:00 | Enes Donmezer v Andrea Borroni | 1-6,1-6 |
| ITF - M15 Antália | 2021/02/14 12:00 | Petr Nouza v Enes Donmezer | 6-2,6-3 |
| ITF - M15 Sozopol | 2021/10/04 07:00 | Samuil Konov v Michael Gloeckler | 3-6,4-6 |
| ITF - M15 Pirot | 2021/09/20 11:00 | Samuil Konov v Kristijan Juhas | 3-6,5-7 |
| ITF - M15 Sozopol | 2021/09/14 07:00 | Plamen Milushev v Samuil Konov | 6-4,6-3 |
| ITF - M15 Sozopol | 2021/09/13 08:00 | Samuil Konov v Adrian Mateo Bejenaru | 6-4,6-4 |
| ITF - M15 Sozopol | 2021/09/12 11:00 | Samuil Konov v Denislav Prodanov | 6-2,6-0 |
| UTR Pro Tennis Series - Sófia | 2021/09/02 11:30 | Ivailo Keremedchiev v Samuil Konov | 3-6,7-6,5-2 |
| UTR Pro Tennis Series - Sófia | 2021/09/01 11:00 | Samuil Konov v Ivan Penev | 4-6,6-1,6-0 |
| UTR Pro Tennis Series - Sófia | 2021/08/31 06:30 | Samuil Konov v Matias Zukas | 3-6,1-6 |