| Swiss Open WD Qual | 2019/01/17 15:00 | Kaj Sjang Lu v Karl Kert | L | 2-0 |
| Swiss Open WD Qual | 2019/01/17 11:00 | Karl Kert v Jesper Toft | W | 2-0 |
| Swiss Open WD Qual | 2018/08/29 13:30 | Azmy Qowimuramadhoni v Karl Kert | L | 2-0 |
| Swiss Open WD Qual | 2018/08/29 11:05 | Niclas Borg Sigg v Karl Kert | W | 0-2 |
| Swiss Open WD Qual | 2018/08/29 08:30 | Tomas Svejda v Karl Kert | W | 1-2 |
| Swiss Open WD Qual | 2018/04/05 16:20 | Karl Kert v Kanishq M | L | 0-2 |
| Giraldilla Int. XD | 2018/01/12 08:30 | Karl Kert v Dmytro Zavadsky | L | 1-2 |
| European Club Championships | 2019/07/05 15:30 | Vladimir Malkov v Mattias Xu | L | 2-0 |
| Lithuanian Int. Qual | 2019/06/06 10:40 | Andis Berzins v Mattias Xu | W | 0-2 |
| Swiss Open WD Qual | 2019/02/27 07:30 | Bedrich Valenta v Mattias Xu | L | 2-1 |