| 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 |
| Oman Open U21 Women | 2021/11/10 13:50 | Patrik Juhasz v Adam Klajber | W | 0-4 |
| Oman Open U21 Women | 2021/11/10 10:30 | Vladislav Ursu v Adam Klajber | L | 4-2 |
| WTT Contender Lasko | 2021/11/01 13:35 | Adam Klajber v Maksim Grebnev | L | 1-3 |
| Czech Open | 2021/08/24 11:30 | Adam Klajber v Truls Moregard | L | 1-4 |
| Czech Open | 2021/08/23 13:20 | Mudit Dani v Adam Klajber | W | 0-4 |
| Challenger Ochsenhausen | 2021/11/12 10:10 | Dauud Cheaib v Evgueni Chtchetinine | L | 3-0 |
| Challenger Ochsenhausen | 2021/11/11 11:30 | Evgueni Chtchetinine v Simon Berglund | L | 0-3 |
| Challenger Ochsenhausen | 2021/11/11 08:50 | Evgueni Chtchetinine v Sven Happek | L | 2-3 |
| Challenger Ochsenhausen | 2021/11/11 07:30 | Florian Bourrassaud v Evgueni Chtchetinine | L | 3-2 |
| Challenger Ochsenhausen | 2021/11/10 11:30 | Alexander Valuch v Evgueni Chtchetinine | W | 0-3 |
| Challenger Ochsenhausen | 2021/11/10 08:50 | John Oyebode v Evgueni Chtchetinine | W | 1-3 |
| Challenger Ochsenhausen | 2021/11/05 11:30 | Eduardo Gonzales v Evgueni Chtchetinine | L | 3-1 |
| Challenger Ochsenhausen | 2021/11/04 13:30 | Evgueni Chtchetinine v Javier Benito | W | 3-0 |