Stadion: Court 3 Round: 62 Ground: Clay
| 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 |
| ITF - M25 - Ricany | 2021/08/30 08:30 | Lambert Ruland v Jimmy Yang | 7-6,6-7,9-11 |
| ITF - M25 - Ricany | 2021/08/29 08:00 | Ondrej Horak v Lambert Ruland | 1-6,1-6 |
| Challenger - Lüdenscheid | 2021/08/15 13:30 | Lambert Ruland v Filip Cristian Jianu | 4-6,2-6 |
| ITF - M15 - Antalya | 2021/10/18 09:55 | Richard Zusman v Benedikt Emesz | 6-3,7-5 |
| ITF - M15 - Antalya | 2021/10/12 08:40 | Richard Zusman v Alberto Morolli | 4-6,6-3,9-11 |
| ITF - M15 - Antalya | 2021/10/11 11:10 | Mert Naci Turker v Richard Zusman | 4-6,6-4,9-11 |
| ITF - M15 - Antalya | 2021/10/10 07:00 | Elias Julian Werner v Richard Zusman | 3-6,2-6 |
| UTR Pro Tennis Series - Barcelona | 2021/10/01 08:00 | Thomas Laurent v Richard Zusman | 6-1,6-2 |
| UTR Pro Tennis Series - Barcelona | 2021/09/30 09:30 | Bekkhan Atlangeriev v Richard Zusman | 6-2,6-2 |
| UTR Pro Tennis Series - Barcelona | 2021/09/29 13:30 | Alexis Klegou v Richard Zusman | 6-2,5-4 |
| UTR Pro Tennis Series - Barcelona | 2021/09/27 08:00 | Xavier Gabarro v Richard Zusman | 3-6,6-6 |