| Spanish Int. Qual | 2019/06/12 09:25 | Elias Bracke v Alvaro Leal | L | 2-1 |
| Latvia Int. | 2020/08/30 08:00 | Hans-Kristjan Pilve v Karl Kert | L | 2-1 |
| Latvia Int. | 2020/08/29 15:00 | Tauri Kilk v Karl Kert | W | 0-2 |
| Latvia Int. | 2020/08/29 12:45 | Ragnar Sepp v Karl Kert | W | 0-2 |
| Slovak Open Qual | 2020/02/26 11:35 | Karl Kert v Ivan Druzchenko | W | 2-0 |
| Austrian Open Qual | 2020/02/19 10:45 | Aram Mahmoud v Karl Kert | L | 2-0 |
| European Team Championships | 2020/02/11 08:30 | Alex Lane v Karl Kert | L | 2-0 |
| Iceland Int. | 2020/01/24 15:20 | Rasmus Skovborg v Karl Kert | W | 0-2 |
| Estonian Int. Qual | 2020/01/09 07:30 | Karl Kert v Tomas Toledano | L | 0-2 |