| Challenger Ochsenhausen | 2021/01/25 19:00 | Dennis Klein v Florian Bluhm | L | 1-3 |
| Challenger Ochsenhausen | 2021/01/25 16:20 | Dauud Cheaib v Dennis Klein | L | 3-2 |
| Challenger Ochsenhausen | 2021/01/25 12:50 | Liang Qiu v Dennis Klein | W | 1-3 |
| Challenger Ochsenhausen | 2021/01/25 10:50 | Dennis Klein v Juan Perez | W | 3-2 |
| Challenger Ochsenhausen | 2021/01/25 08:50 | Dennis Klein v Francisco Sanchi | W | 3-0 |
| Dusseldorf Masters | 2020/07/10 15:30 | Nils Hohmeier v Dennis Klein | L | 4-1 |
| Polish Open | 2020/03/11 13:00 | Dennis Klein v Marco Golla | W | 3-0 |
| German Open | 2020/01/28 09:15 | Dennis Klein v Daniel Gonzalez | W | 4-1 |
| Challenger Ochsenhausen | 2021/01/25 19:40 | Liang Qiu v Fedor Kuzmin | L | 3-1 |
| Challenger Ochsenhausen | 2021/01/25 17:40 | Fedor Kuzmin v Juan Perez | W | 3-0 |
| Challenger Ochsenhausen | 2021/01/25 15:00 | Fedor Kuzmin v Francisco Sanchi | L | 2-3 |
| Challenger Ochsenhausen | 2021/01/25 12:10 | Fedor Kuzmin v Florian Bluhm | W | 3-2 |
| Challenger Ochsenhausen | 2021/01/25 09:30 | Evgueni Chtchetinine v Fedor Kuzmin | W | 1-3 |
| Challenger Ochsenhausen | 2021/01/19 13:40 | Fedor Kuzmin v Evgueni Chtchetinine | W | 3-0 |
| Challenger Ochsenhausen | 2021/01/19 12:15 | Dauud Cheaib v Fedor Kuzmin | W | 1-3 |
| Challenger Ochsenhausen | 2021/01/19 10:00 | Fedor Kuzmin v Josip Huzjak | W | 3-1 |