| Nantes Int. | 06/24 07:00 | - | Seng Zoe Yeoh v Kai Schaefer | L | 2-0 | |
| Thailand Open | 05/19 07:40 | 4 |
Kai Schaefer v
Zii Jia Lee
|
L | 0-2 | |
| Thailand Open | 05/18 10:00 | 5 | Thomas Rouxel v Kai Schaefer | W | 0-2 | |
| Thomas Cup | 05/11 07:40 | - | Kai Schaefer v Jason Anthony Ho-Shue | W | 2-0 | |
| Thomas Cup | 05/09 07:40 | - |
Tzu Wei Wang
v
Kai Schaefer |
L | 2-1 | |
| Thomas Cup | 05/08 02:40 | - |
Srikanth Kidambi
v
Kai Schaefer |
L | 2-1 | |
| European Championships | 04/26 11:00 | - |
Kai Schaefer v
Anders Antonsen
|
L | 1-2 | |
| Korea Open | 04/05 03:50 | 5 |
Donghun Kim
v
Kai Schaefer |
L | 2-0 | |
| Orleans Masters | 03/30 11:00 | - |
Kai Schaefer v
Chico Aura Dwi Wardoyo
|
L | 0-2 | |
| Polish Open | 03/25 14:30 | - |
Kai Schaefer v
Jun Hao Leong
|
L | 0-2 | |
| Polish Open | 03/25 08:40 | - | Kai Schaefer v Luka Wraber | W | 2-0 | |
| Swedish Open | 01/22 15:40 | - | Seng Zoe Yeoh v Kai Schaefer | L | 2-0 | |
| Swedish Open | 01/22 09:40 | - | Rasmus Messerschmidt v Kai Schaefer | W | 1-2 | |
| Swedish Open | 01/21 16:30 | - | Jacob Nilsson v Kai Schaefer | W | 1-2 | |
| Swedish Open | 01/21 10:20 | - |
Jeppe Bruun
v
Kai Schaefer |
W | 0-2 | |
| World Championships | 12/15 12:00 | 6 |
Kai Schaefer v
Kantaphon Wangcharoen
|
L | 0-2 | |
| World Championships | 12/12 08:00 | 6 | Kwang Hee Heo v Kai Schaefer | - | Walkover | |
| Belgian Int. | 10/28 08:30 | 5 |
Ade Resky Dwicahyo
v
Kai Schaefer |
L | 2-1 | |
| Olympics 2020 - Men | 07/27 01:40 | 1 | Toby Penty v Kai Schaefer | L | 2-0 | |
| Olympics 2020 - Men | 07/25 11:00 | 1 |
Kantaphon Wangcharoen
v
Kai Schaefer |
L | 2-0 | |
| Spain Int | 06/17 15:00 | - | Ivan Rusev v Kai Schaefer | L | 2-0 | |
| Spain Masters | 05/19 11:20 | 5 |
Kai Schaefer v
Lucas Claerbout
|
L | 1-2 | |
| Portuguese Int. | 05/07 14:30 | 1 | Kai Schaefer v Johnnie Torjussen | L | 0-2 | |
| European Championships | 04/28 12:20 | 1 |
Kai Schaefer v
Anders Antonsen
|
L | 0-2 | |
| Orleans Masters | 03/25 11:30 | 4 |
Kai Schaefer v
Ditlev Jaeger Holm
|
L | 0-2 | |
| Orleans Masters | 03/24 17:10 | 5 |
Mithun Manjunath
v
Kai Schaefer |
W | 1-2 | |
| SaarLorLux Open | 10/27 11:15 | 6 | Kai Schaefer v Lucas Corvee | L | 0-2 | |
| Denmark Open | 10/13 10:10 | 5 | Kai Schaefer v Brice Leverdez | L | 0-2 | |
| Spain Masters | 02/20 11:50 | 4 |
Kai Schaefer v
Sameer Verma
|
L | 1-2 | |
| Spain Masters | 02/19 15:00 | 5 |
Kai Schaefer v
Misha Zilberman
|
W | 2-1 |
Wikipedia - Kai Schäfer
Kai Hendrik Schäfer (born 13 June 1993) is a German badminton player. He competed at the 2020 Tokyo Olympics.