| Challenger Ochsenhausen | 2021/11/15 21:00 | Adam Klajber v Dauud Cheaib | L | 0-3 |
| Challenger Ochsenhausen | 2021/11/15 16:20 | Adam Klajber v Andrei Putuntica | L | 1-3 |
| Challenger Ochsenhausen | 2021/11/15 13:30 | Adam Klajber v Miguel Chamorro | L | 0-3 |
| Challenger Ochsenhausen | 2021/11/15 10:10 | Guilherme Teodoro v Adam Klajber | L | 3-0 |
| Challenger Ochsenhausen | 2021/11/15 08:10 | Adam Klajber v Evgueni Chtchetinine | L | 0-3 |
| Oman Open U21 Women | 2021/11/12 11:40 | Vladimir Sidorenko v Adam Klajber | W | 3-4 |
| Oman Open U21 Women | 2021/11/11 15:35 | Irvin Bertrand v Adam Klajber | L | 4-1 |
| Oman Open U21 Women | 2021/11/10 18:00 | Maciej Kolodziejczyk v Adam Klajber | W | 3-4 |
| Challenger Ochsenhausen | 2021/11/16 08:00 | Andrei Putuntica v Dennis Klein | L | 3-0 |
| Challenger Ochsenhausen | 2021/11/15 19:40 | Guilherme Teodoro v Dennis Klein | W | 1-3 |
| Challenger Ochsenhausen | 2021/11/15 17:40 | Dennis Klein v Evgueni Chtchetinine | L | 2-3 |
| Challenger Ochsenhausen | 2021/11/15 15:00 | Dennis Klein v Sudhanshu Grover | W | 3-1 |
| Challenger Ochsenhausen | 2021/11/15 12:10 | Dennis Klein v Miguel Chamorro | W | 3-0 |
| Challenger Ochsenhausen | 2021/11/15 09:30 | Dauud Cheaib v Dennis Klein | L | 3-1 |
| Challenger Ochsenhausen | 2021/11/02 13:10 | Dennis Klein v Simon Berglund | W | 3-2 |
| Challenger Ochsenhausen | 2021/11/02 12:30 | Dennis Klein v Amirreza Abbasi | L | 0-3 |