| Orléans Masters | 2019/03/19 18:00 | Parsons, Sam v Kai Schaefer | W | 0-2 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/03/12 11:00 | Kai Schaefer v Burestedt, Felix | L | 1-2 |
| Masters d'Espagne | 2019/02/20 15:20 | Pablo Abian v Kai Schaefer | L | 2-0 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/02/19 13:55 | Kim Bruun v Kai Schaefer | W | 1-2 |
| Open de Suisse - Doubles Femmes - Qualif. | 2019/02/19 11:00 | Kai Schaefer v Amaya, Bernat | W | 2-0 |
| Giraldilla Int. XD | 2019/02/16 10:30 | Kai Schaefer v Malkov, Vladimir | L | 1-2 |
| Giraldilla Int. XD | 2019/02/15 13:30 | Ouseph, Rajiv v Kai Schaefer | W | 0-2 |
| Giraldilla Int. XD | 2018/11/30 11:45 | Lane, Alex v Kai Schaefer | L | 2-0 |
| Giraldilla Int. XD | 2019/03/10 12:00 | Soo, Teck Zhi v Burestedt, Felix | L | 1-2 |
| Giraldilla Int. XD | 2019/03/09 17:00 | Soo, Teck Zhi v Kim Bruun | W | 2-1 |
| Giraldilla Int. XD | 2019/02/23 10:20 | Soo, Teck Zhi v Li, S. F. | L | 1-2 |
| Giraldilla Int. XD | 2019/02/22 17:20 | Soo, Teck Zhi v Lane, Alex | W | 2-1 |
| Open de Suède | 2019/01/18 18:00 | Heino, Eetu v Soo, Teck Zhi | L | 2-1 |
| Estonie Int. - | 2019/01/12 14:40 | Arnaud Merkle v Soo, Teck Zhi | L | 2-0 |
| Estonie Int. - | 2019/01/12 09:00 | Must, Raul v Soo, Teck Zhi | W | 0-2 |
| Estonie Int. - | 2019/01/11 17:00 | Soo, Teck Zhi v Shmundyak, Oleksandar | W | 2-0 |