Stadium: Court 1 Round: 54 Ground: Hardcourt indoor
| ITF M25 Hamburg | 2021/10/19 08:00 | Yannik Steinegger v Leonard Von Hindte | 3-6,3-6 |
| ITF M25 Hamburg | 2021/10/17 16:45 | Yannik Steinegger v Scott Duncan | 6-2,2-6,10-6 |
| ITF M25 Hamburg | 2021/10/17 11:30 | Yannik Steinegger v Christopher Patzanovsky | 6-3,7-6 |
| ITF M15 Sozopol | 2021/10/13 09:00 | Yannik Steinegger v Nikolay Nedelchev | 6-4,4-6,5-10 |
| ITF M15 Sozopol | 2021/10/11 10:00 | Yannik Steinegger v Ainius Sabaliauskas | 6-3,6-2 |
| ITF M15 Sozopol | 2021/10/10 13:30 | Yannik Steinegger v Sebastian Bahamondes | 6-1,6-2 |
| ITF M15 Sozopol | 2021/10/07 07:00 | Yan Bondarevskiy v Yannik Steinegger | 6-3,6-4 |
| ITF M15 Sozopol | 2021/10/06 07:00 | Dan Alexandru Tomescu v Yannik Steinegger | 3-6,6-7 |
| ITF M15 Selva Gardena | 2021/10/24 17:10 | Paolo Schiavone v Dominik Langmajer | 5-7,1-6 |
| ITF M25 Prague | 2021/10/03 13:00 | Matyas Cerny v Dominik Langmajer | 7-6,6-1 |
| ITF M15 Forbach | 2021/09/26 08:45 | Warren Sinius v Dominik Langmajer | 6-0,6-0 |
| UTR Pro Tennis Series Ricany | 2021/09/12 10:30 | Michalis Sakellaridis v Dominik Langmajer | 6-2,5-2 |
| UTR Pro Tennis Series Ricany | 2021/09/11 07:30 | Dominik Langmajer v Alec Adamson | 3-6,6-3,6-3 |
| ITF M25 Ricany | 2021/08/29 12:00 | Dominik Langmajer v Martin Machala | 3-6,3-6 |
| ITF M25 Poznan | 2021/08/22 08:00 | Dominik Langmajer v Marcelo Zormann | 4-6,1-6 |
| ITF M15 Lodz | 2021/08/15 11:00 | Omar Brigida v Dominik Langmajer | 6-1,6-4 |