| Oman Open U21 - Dames | 2021/11/10 14:40 | Irvin Bertrand v Benno Oehme | W | 4-2 |
| WTT Contender Lasko | 2021/11/02 09:10 | Gaston Alto v Irvin Bertrand | L | 3-2 |
| WTT Contender Lasko | 2021/11/01 13:35 | Irvin Bertrand v Mahmoud Helmy | W | 3-0 |
| WTT Star Contender - Doha | 2021/09/21 07:00 | Seungmin Cho v Irvin Bertrand | L | 3-1 |
| WTT Star Contender - Doha | 2021/09/20 12:00 | Hon Ming Li v Irvin Bertrand | W | 0-3 |
| Challenger - Ochsenhausen | 2021/07/13 14:00 | Irvin Bertrand v Carlos Muhlbach | W | 3-0 |
| Challenger - Ochsenhausen | 2021/07/13 12:35 | Irvin Bertrand v Mathieu De Saintilan | L | 2-3 |
| Challenger - Ochsenhausen | 2021/07/13 09:40 | Carlos Muhlbach v Irvin Bertrand | W | 0-3 |
| Oman Open U21 - Dames | 2021/11/10 18:00 | Maciej Kolodziejczyk v Adam Klajber | W | 3-4 |
| Oman Open U21 - Dames | 2021/11/10 13:50 | Patrik Juhasz v Adam Klajber | W | 0-4 |
| Oman Open U21 - Dames | 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 |
| 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 |