| ITF Turkey F10 | 2018/03/12 07:30 | Gabriel Donev v Jannis Kahlke | 5-7,6-3,7-5 |
| UTR Pro Tennis Series - Dobrich | 2022/02/21 10:30 | Gabriel Donev v Edison Ambarzumjan | 6-1,6-3 |
| UTR Pro Tennis Series - Plovdiv | 2022/02/12 08:30 | Gabriel Donev v Ivan Liutarevich | 2-6,2-6 |
| UTR Pro Tennis Series - Plovdiv | 2022/02/10 11:07 | Gabriel Donev v Alexander Lazov | 6-3,4-6,6-3 |
| UTR Pro Tennis Series - Plovdiv | 2022/02/09 07:30 | Gabriel Donev v Oleksandr Bielinskyi | 3-6,6-7 |
| UTR Pro Tennis Series - Plovdiv | 2022/02/08 09:54 | Gabriel Donev v Yanaki Milev | 6-4,1-6,6-3 |
| UTR Pro Tennis Series - Plovdiv | 2022/02/07 12:00 | Gabriel Donev v Ioan Alexandru Chirita | 6-1,6-1 |
| UTR Pro Tennis Series Dubai | 2022/01/08 04:30 | Gabriel Donev v Filip Duda | 6-4,7-6 |
| UTR Pro Tennis Series Dubai | 2022/01/06 09:00 | Gabriel Donev v Gorazd Srbljak | 6-2,3-6,1-6 |
| UTR Pro Tennis Series - Dobrich | 2022/02/21 13:06 | Jannis Kahlke v Ilie Babinciuc | 6-3,5-3 |
| UTR Pro Tennis Series Barcelona | 2022/02/03 11:30 | Jannis Kahlke v Pablo Carretero | 3-6,1-6 |
| UTR Pro Tennis Series Barcelona | 2022/02/02 14:00 | Jannis Kahlke v Sami Ben Abdennibi | 7-6,5-7,6-4 |
| UTR Pro Tennis Series Barcelona | 2022/02/01 08:00 | Jannis Kahlke v Andrey Chepelev | 6-3,7-5 |
| UTR Pro Tennis Series Barcelona | 2022/01/31 09:30 | Jannis Kahlke v Jip Van Assendelft | 2-6,4-6 |
| UTR Pro Tennis Series - Amsterdam | 2021/12/07 10:00 | Jip Van Assendelft v Jannis Kahlke | 2-6,7-5,6-2 |
| UTR Pro Tennis Series - Amsterdam | 2021/12/06 07:00 | Jannis Kahlke v Guy Den Heijer | 7-6,5-7,3-5 |
| ITF M15 Marburg | 2019/07/08 09:00 | Valentin Guenther v Jannis Kahlke | 6-4,6-2 |