Stadium: Center Court Round: 44 Ground: Carpet indoor
| ITF - Nussloch M25 | 2020/01/19 09:00 | Stefan Seifert v Paul-Georg Guenther | 6-3,6-1 |
| ITF - Sharm El Sheikh M15 | 2019/11/21 09:15 | Stefan Seifert v Vladyslav Manafov | 2-6,4-6 |
| ITF - Sharm El Sheikh M15 | 2019/11/20 13:50 | Stefan Seifert v Filip Duda | 6-4,6-1 |
| ITF - Parnu M15 | 2019/11/02 10:00 | Stefan Seifert v Evgeny Tyurnev | 5-7,7-5,3-6 |
| ITF - Parnu M15 | 2019/11/01 11:55 | Stefan Seifert v Maxime Pauwels | 4-6,6-2,6-2 |
| ITF - Parnu M15 | 2019/10/30 10:10 | Stefan Seifert v Kristjan Tamm | 6-3,3-6,6-4 |
| ITF M15 Liberec | 2019/10/24 08:00 | Stefan Seifert v Uladzimir Ignatik | 4-6,6-7 |
| ITF M15 Liberec | 2019/10/22 13:30 | Karlo Cubelic v Stefan Seifert | 3-6,2-6 |
| ITF - Nussloch M25 | 2020/01/19 09:00 | Niklas Albuszies v Dominik Langmajer | 6-4,6-4 |
| ITF - Ueberlingen M15 | 2019/08/19 14:30 | Niklas Albuszies v Lynn Max Kempen | 3-6,2-6 |
| ITF - Ueberlingen M15 | 2019/08/19 08:00 | Christopher Patzanovsky v Niklas Albuszies | 4-6,4-6 |
| ITF M15 Wetzlar | 2019/08/05 13:00 | Deney Wassermann v Niklas Albuszies | 6-1,6-0 |
| ITF M15 Wetzlar | 2019/08/05 09:00 | Niklas Albuszies v Laurin Aerne | 7-6,6-0 |
| ITF - Troisdorf M15 | 2019/05/06 07:00 | Niklas Albuszies v Daniel De Jonge | 2-6,1-6 |
| ITF - Nussloch M25 | 2019/01/21 09:00 | Kai Wehnelt v Niklas Albuszies | 6-1,6-2 |
| ITF Germany F13 | 2018/08/19 08:00 | Niklas Albuszies v Robin Lang | 2-6,3-6 |