| Swiss Open WD Qual | 2018/11/01 14:20 | Kaj Sjang Lu v Jack MacGregor | W | 2-0 |
| Swiss Open WD Qual | 2018/11/01 11:55 | Kaj Sjang Lu v Tobias Mund | W | 2-0 |
| Swiss Open WD Qual | 2018/09/12 08:30 | Kaj Sjang Lu v Harald Hiemstra | W | 2-0 |
| Swiss Open WD Qual | 2018/05/10 13:45 | Kaj Sjang Lu v Grega Sustar | W | 2-0 |
| Swiss Open WD Qual | 2018/05/10 08:30 | Kaj Sjang Lu v Filip Spoljarec | W | 2-1 |
| Swiss Open WD Qual | 2018/01/18 15:00 | Jesper Toft v Kaj Sjang Lu | L | 2-1 |
| Swiss Open WD Qual | 2018/01/18 11:00 | Kaj Sjang Lu v Jonas Jaeger | W | 2-1 |
| 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 |