Head to Head
| All England Open | 2017/02/28 19:00 | Kai Schaefer v Kalle Koljonen | L | 1-2 |
Home History
| Orleans Masters | 2022/03/30 11:00 | Kai Schaefer v Chico Aura Dwi Wardoyo | L | 0-2 |
| Polish Open | 2022/03/25 14:30 | Kai Schaefer v Jun Hao Leong | L | 0-2 |
| Polish Open | 2022/03/25 08:40 | Kai Schaefer v Luka Wraber | W | 2-0 |
| Swedish Open | 2022/01/22 15:40 | Seng Zoe Yeoh v Kai Schaefer | L | 2-0 |
| Swedish Open | 2022/01/22 09:40 | Rasmus Messerschmidt v Kai Schaefer | W | 1-2 |
| Swedish Open | 2022/01/21 16:30 | Jacob Nilsson v Kai Schaefer | W | 1-2 |
| Swedish Open | 2022/01/21 10:20 | Jeppe Bruun Christensen v Kai Schaefer | W | 0-2 |
| World Championships | 2021/12/15 12:00 | Kai Schaefer v Kantaphon Wangcharoen | L | 0-2 |
Away History
| Swiss Open | 2022/03/24 12:20 | Kalle Koljonen v H.S. Prannoy | L | 1-2 |
| Swiss Open | 2022/03/23 14:20 | Kalle Koljonen v Toby Penty | W | 2-0 |
| German Open | 2022/03/09 11:30 | Kwang Hee Heo v Kalle Koljonen | L | 2-1 |
| India Open | 2022/01/13 07:10 | Kalle Koljonen v Sergey Sirant | L | 0-2 |
| India Open | 2022/01/11 06:30 | Kartikey Gulshan Kumar v Kalle Koljonen | W | 0-2 |
| World Championships | 2021/12/14 09:00 | Mark Caljouw v Kalle Koljonen | L | 2-1 |
| World Championships | 2021/12/12 09:40 | Lino Munoz v Kalle Koljonen | W | 0-2 |
| Dutch Open | 2021/10/16 08:20 | Kalle Koljonen v Pablo Abian | L | 1-2 |