| Slovenia Int. | 2021/05/20 08:40 | Ludik, Milan v Joel Koenig | L | 2-0 |
| Portuguese Int. Qual | 2021/05/06 12:40 | Magnus Johannesen v Joel Koenig | L | 2-0 |
| Open de Pologne - Qualif. | 2021/03/25 18:40 | Piris, Carlos v Joel Koenig | L | 2-0 |
| Open de Pologne - Qualif. | 2021/03/25 14:15 | Monroy, Joan v Joel Koenig | W | 0-2 |
| Portuguese Int. | 2020/11/06 16:15 | Luis Enrique Penalver v Joel Koenig | L | 2-0 |
| Portuguese Int. | 2020/11/06 12:30 | Joel Koenig v Pringle, Ciar | W | 2-1 |
| SaarLorLux Open 2019, MS | 2020/10/28 17:45 | Joel Koenig v Ivan Rusev | L | 0-2 |
| SaarLorLux Open 2019, MS | 2020/10/27 10:30 | Anjo, Duarte Nuno v Joel Koenig | W | 1-2 |
| Slovenia Int. | 2021/05/21 09:00 | Messerschmidt, Rasmus v Jan Louda | L | 2-0 |
| Slovenia Int. | 2021/05/20 13:20 | Yeoh, Seng Zoe v Jan Louda | W | 1-2 |
| Slovenia Int. | 2021/05/20 10:00 | Jan Louda v Kafi Raditya Pandika | W | 2-0 |
| Open de Pologne | 2021/03/26 10:50 | Jan Louda v Jun Hao Leong | L | 1-2 |
| Open de Pologne - Qualif. | 2021/03/25 18:15 | Jan Louda v Hjelm, Albin Carl | W | 2-0 |
| Open de Pologne - Qualif. | 2021/03/25 16:45 | Alvaro Leal v Jan Louda | W | 0-2 |
| Euro Mixed Team Champs | 2020/12/12 10:30 | Mark Caljouw v Jan Louda | L | 2-0 |
| Euro Mixed Team Champs | 2020/12/11 13:00 | Jan Louda v Milan Dratva | W | 2-0 |