Stadium: Court 2 Oberhaching Round: 44 Ground: Hardcourt indoor
| ITF M15 Antalya | 2021/10/21 07:00 | Bogdan Ionut Apostol v Lambert Ruland | 6-3,6-2 |
| ITF M15 Antalya | 2021/10/20 07:00 | Lambert Ruland v Mert Naci Turker | 6-2,7-5 |
| ITF M15 Antalya | 2021/10/19 10:35 | Lambert Ruland v Richard Zusman | 6-4,6-3 |
| ITF M15 Antalya | 2021/10/18 07:00 | Vladimir Korolev v Lambert Ruland | 3-6,1-6 |
| ITF M15 Antalya | 2021/10/17 07:00 | Lambert Ruland v Philipp Pavlenko | 6-4,6-1 |
| ITF M15 Antalya | 2021/10/12 07:00 | Kristof Minarik v Lambert Ruland | 6-4,6-1 |
| ITF M15 Antalya | 2021/10/11 09:10 | Lambert Ruland v Vitek Horak | 4-6,6-2,10-8 |
| ITF M15 Antalya | 2021/10/10 07:00 | Lambert Ruland v Adrian Mateo Bejenaru | 6-3,7-5 |
| German Championship | 2021/12/08 13:00 | Bastien Presuhn v Neo Niedner | 6-3,4-6,6-1 |
| ITF M25 Frankfurt am Main | 2021/08/09 12:30 | Neo Niedner v Tim Handel | 2-6,2-6 |
| ITF M25 Marburg | 2021/07/08 08:55 | Milan Welte v Neo Niedner | 6-2,6-1 |
| German Championship | 2020/12/07 15:00 | Neo Niedner v Jim Walder | 2-6,6-4,6-7 |