| Internacional da Bélgica | 2019/09/12 17:30 | Kai Schaefer v Toby Penty | L | 2-1 |
| Internacional de Espanha | 2019/06/14 08:00 | Kai Schaefer v Toby Penty | W | 0-2 |
| Indonésia - Masters - Duplas Mistas | 2017/04/25 13:15 | Toby Penty v Kai Schaefer | W | 2-0 |
| Internacional de Giraldilla - Duplas Mistas | 2017/01/14 08:43 | Toby Penty v Kai Schaefer | W | 2-1 |
| All England Open | 2021/03/17 15:00 | Kanta Tsuneyama v Toby Penty | L | 2-0 |
| SaarLorLux Open | 2020/10/29 15:45 | Ivan Rusev v Toby Penty | L | 2-1 |
| SaarLorLux Open | 2020/10/28 17:45 | Lucas Corvee v Toby Penty | W | 1-2 |
| Open da Dinamarca | 2020/10/14 07:20 | Toby Penty v Srikanth Kidambi | L | 0-2 |
| Masters de Espanha | 2020/02/19 10:20 | Toby Penty v Sergey Sirant | L | 0-2 |
| Campeonato Europeu - Equipas | 2020/02/14 14:00 | Mark Caljouw v Toby Penty | L | 2-0 |
| Campeonato Europeu - Equipas | 2020/02/13 09:00 | Toby Penty v Felix Burestedt | W | 2-1 |
| Campeonato Europeu - Equipas | 2020/02/11 08:00 | Toby Penty v Raul Must | L | 1-2 |
| Jogos Olímpicos 2020 - Masculino | 2021/07/25 11:00 | Kantaphon Wangcharoen v Kai Schaefer | L | 2-0 |
| Internacional de Espanha | 2021/06/17 15:00 | Ivan Rusev v Kai Schaefer | L | 2-0 |
| Masters de Espanha | 2021/05/19 11:20 | Kai Schaefer v Lucas Claerbout | L | 1-2 |
| Portuguese Int. | 2021/05/07 14:30 | Kai Schaefer v Johnnie Torjussen | L | 0-2 |
| Campeonato Europeu | 2021/04/28 12:20 | Kai Schaefer v Anders Antonsen | L | 0-2 |
| Masters de Orleães | 2021/03/25 11:30 | Kai Schaefer v Ditlev Jaeger Holm | L | 0-2 |
| Masters de Orleães | 2021/03/24 17:10 | Mithun Manjunath v Kai Schaefer | W | 1-2 |
| SaarLorLux Open | 2020/10/27 11:15 | Kai Schaefer v Lucas Corvee | L | 0-2 |