| Giraldilla Int. XD | 2017/12/06 14:00 | Kai Schaefer v Joshua Magee | W | 2-1 |
| Indonesia Masters - Dublu Mixt | 2017/11/01 19:15 | Kai Schaefer v Khosit Phetpradab | L | 0-2 |
| Indonesia Masters - Dublu Mixt | 2017/10/31 18:20 | Kai Schaefer v Dmytro Zavadsky | W | 2-0 |
| Swiss Open - Dublu Feminin - Calificari | 2017/10/24 14:40 | Kai Schaefer v Thomas Rouxel | L | 0-2 |
| Swiss Open - Dublu Feminin - Calificari | 2017/10/24 09:20 | Pierrick Cajot v Kai Schaefer | W | 0-2 |
| Indonesia Masters - Dublu Mixt | 2017/10/11 19:00 | Kai Schaefer v Pablo Abian | L | 0-2 |
| Dutch Open | 2017/10/11 08:00 | Thomas Rouxel v Kai Schaefer | W | 0-2 |
| Indonesia Masters - Dublu Mixt | 2017/04/25 13:15 | Toby Penty v Kai Schaefer | L | 2-0 |
| Swiss Open - Dublu Feminin - Calificari | 2017/12/05 16:00 | Jeppe Bruun Christensen v Adrian Dziolko | W | 1-2 |
| Swiss Open - Dublu Feminin - Calificari | 2017/12/05 14:00 | Adrian Dziolko v David Jones | W | 2-1 |