| Challenger Ochsenhausen | 2021/05/31 16:00 | Daniel Rinderer v Dauud Cheaib | L | 1-3 |
| Challenger Ochsenhausen | 2021/05/31 14:00 | Ahmed El-Mahdy v Daniel Rinderer | W | 0-3 |
| Challenger Ochsenhausen | 2021/05/31 10:30 | Harmeet Desai v Daniel Rinderer | L | 3-0 |
| Challenger Ochsenhausen | 2021/05/31 07:50 | Dennis Klein v Daniel Rinderer | L | 3-1 |
| Challenger Ochsenhausen | 2021/05/25 14:00 | Daniel Rinderer v Josip Huzjak | W | 3-1 |
| Challenger Ochsenhausen | 2021/05/25 12:35 | Dennis Klein v Daniel Rinderer | L | 3-1 |
| Challenger Ochsenhausen | 2021/05/25 11:00 | Daniel Rinderer v Dillon Chambers | L | 2-3 |
| Challenger Ochsenhausen | 2021/05/25 07:40 | Daniel Rinderer v Christopher Ligocki | W | 3-2 |
| Challenger Ochsenhausen | 2021/05/31 16:40 | Ahmed El-Mahdy v Fedor Kuzmin | W | 0-3 |
| Challenger Ochsenhausen | 2021/05/31 14:40 | Harmeet Desai v Fedor Kuzmin | W | 1-3 |
| Challenger Ochsenhausen | 2021/05/31 09:50 | Dennis Klein v Fedor Kuzmin | L | 3-2 |
| Challenger Ochsenhausen | 2021/05/31 07:10 | Valerij Rakov v Fedor Kuzmin | W | 0-3 |
| Challenger Ochsenhausen | 2021/05/11 14:40 | Dennis Klein v Fedor Kuzmin | W | 0-3 |
| Challenger Ochsenhausen | 2021/05/11 13:15 | Josip Huzjak v Fedor Kuzmin | W | 0-3 |
| Challenger Ochsenhausen | 2021/05/11 09:00 | Juri Grauer v Fedor Kuzmin | W | 0-3 |
| Challenger Ochsenhausen | 2021/05/11 07:00 | Michael Engelhardt v Fedor Kuzmin | W | 0-3 |