| Polish Open | 2023/03/24 13:30 | Danylo Bosniuk v Kai Schaefer | W | 0-2 |
| Portugal Int. | 2024/03/09 17:20 | Matthias Kicklitz v Kai Schaefer | L | 2-0 |
| Portugal Int. | 2024/03/09 10:40 | Kai Schaefer v Rafael Gavois | W | 2-0 |
| Portugal Int. | 2024/03/08 10:40 | Kai Schaefer v Aria Dinata | W | 2-1 |
| German Open Qual | 2024/02/27 08:00 | S. Sankar Muthusamy Subramanian v Kai Schaefer | L | 2-0 |
| European Team Championships | 2024/02/16 09:00 | Jan Louda v Kai Schaefer | L | 2-1 |
| Azerbaijan Int. | 2024/02/10 06:40 | Daniil Dubovenko v Kai Schaefer | L | 2-1 |
| Azerbaijan Int. | 2024/02/09 09:40 | Kai Schaefer v Giovanni Toti | W | 2-1 |
| Swedish Open | 2024/01/19 14:00 | Kai Schaefer v Enogat Roy | L | 0-2 |
| German Open | 2024/02/28 16:00 | Julien Carraggi v Danylo Bosniuk | L | 2-1 |
| German Open Qual | 2024/02/27 11:00 | Collins Valentine Filimon v Danylo Bosniuk | W | 0-2 |
| German Open Qual | 2024/02/27 08:00 | Giovanni Toti v Danylo Bosniuk | W | 1-2 |
| European Team Championships | 2024/02/16 09:00 | Toma Junior Popov v Danylo Bosniuk | L | 2-0 |
| European Team Championships | 2024/02/15 09:00 | Danylo Bosniuk v Harry Huang | W | 2-0 |
| Azerbaijan Int. | 2024/02/09 12:30 | Danylo Bosniuk v Daniil Dubovenko | L | 1-2 |
| Swedish Open | 2024/01/20 15:40 | Danylo Bosniuk v Andi Fadel Muhammad | L | 0-2 |
| Swedish Open | 2024/01/20 09:40 | Danylo Bosniuk v Yanis Gaudin | W | 2-0 |