| Orleans Masters - Kwalifikacje | 2024/03/12 13:40 | Daniil Dubovenko v Kai Schaefer | L | 2-1 |
| Orleans Masters - Kwalifikacje | 2024/03/12 11:55 | Kai Schaefer v Danylo Bosniuk | W | 2-0 |
| 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 - Kwalifikacje | 2024/02/27 08:00 | S. Sankar Muthusamy Subramanian v Kai Schaefer | L | 2-0 |
| Drużynowe Mistrzostwa Europy | 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 |
| German Open - Kwalifikacje | 2024/02/27 08:45 | Joakim Oldorff v Markus Barth | L | 2-0 |
| Uganda Int. | 2024/02/23 07:30 | Markus Barth v Anuoluwapo Juwon Opeyori | L | 1-2 |
| Azerbaijan Int. | 2024/02/09 11:20 | Markus Barth v Dmitriy Panarin | L | 0-2 |
| Swedish Open | 2024/01/19 14:00 | Markus Barth v Enogat Roy | L | 0-2 |
| Estonian Int. | 2024/01/12 09:55 | Jia Wei Joel Koh v Markus Barth | L | 2-1 |
| Norwegian Int. | 2023/11/10 10:20 | Markus Barth v Mikolaj Szymanowski | L | 0-2 |
| Hylo Open Qual | 2023/10/31 08:30 | Markus Barth v Luka Wraber | L | 0-2 |
| Abu Dhabi Masters | 2023/10/18 06:00 | Korakrit Laotrakul v Markus Barth | L | 2-0 |