| Lithuanian International | 2023/06/09 13:05 | Mateusz Danielak v Prahdiska B Shujiwo | L | 0-2 |
| Bonn International | 2023/06/01 11:50 | Mateusz Danielak v Zack Bobrowski | L | 1-2 |
| Swedish Open - Kvalifikation | 2023/05/11 10:30 | Mateusz Danielak v Amaury Lievre | L | 0-2 |
| Luxembourg Open - Kvalifikation | 2023/05/04 13:30 | Mateusz Danielak v Ernesto Baschwitz | L | 1-2 |
| Luxembourg Open - Kvalifikation | 2023/05/04 09:50 | Mateusz Danielak v Dominik Kopriva | W | 2-1 |
| Dutch International - Kvalifikation | 2023/04/13 08:00 | Mateusz Danielak v Harry Huang | L | 1-2 |
| Polish Open | 2023/03/24 12:00 | Mateusz Danielak v Luka Wraber | L | 1-2 |
| Slovenien - Future Series | 2022/11/26 09:20 | Mateusz Danielak v Heng Lin Ngan | L | 1-2 |
| European Games | 2023/06/26 08:30 | Toma Junior Popov v Karl Kert | L | 2-0 |
| Lithuanian International | 2023/06/09 13:15 | Rui Yang Ryan Tan v Karl Kert | L | 2-1 |
| Austrian Open - Kvalifikation | 2023/05/25 08:35 | Harsheel Dani v Karl Kert | L | 2-0 |
| Swedish Open - Kvalifikation | 2023/05/11 07:35 | Marcus Viscovich v Karl Kert | L | 2-0 |
| Polish Open - Kvalifikation | 2023/03/22 16:10 | Daniel S Farid v Karl Kert | L | 2-1 |
| Polish Open - Kvalifikation | 2023/03/22 08:25 | Camilo Borst v Karl Kert | W | 0-2 |
| Island international | 2023/01/27 14:15 | Karl Kert v Marcus Viscovich | L | 0-2 |
| Estonian International - Kvalifikation | 2023/01/12 10:55 | Iikka Heino v Karl Kert | L | 2-0 |