| 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 |
| Czech Open | 2021/08/21 15:20 | Daniele Pinto v Adam Klajber | W | 0-3 |
| Czech Open | 2021/08/21 08:40 | Jonas Promberger v Adam Klajber | W | 2-3 |
| WTT Contender Tunis | 2021/10/28 18:30 | Patrick Franziska v Maksim Grebnev | L | 3-1 |
| WTT Contender Tunis | 2021/10/27 19:00 | Truls Moregard v Maksim Grebnev | W | 2-3 |
| WTT Contender Tunis | 2021/10/26 15:10 | Joao Geraldo v Maksim Grebnev | W | 1-3 |
| WTT Contender Tunis | 2021/10/25 16:35 | Maksim Grebnev v Tobias Hippler | W | 3-1 |
| WTT Contender Tunis | 2021/10/24 17:30 | Florent Lambiet v Maksim Grebnev | W | 0-3 |
| European Team Championships | 2021/10/03 15:45 | Patrick Franziska v Maksim Grebnev | L | 3-2 |
| European Team Championships | 2021/10/03 13:35 | Benedikt Duda v Maksim Grebnev | W | 2-3 |
| European Team Championships | 2021/10/02 10:45 | Maksim Grebnev v Anton Kallberg | W | 3-0 |