| Dutch Open XD | 2019/10/08 16:20 | Jansen J R / Ostermeyer K v Christiansen/Boje | L | 1-2 |
| Orléans Masters - Doubles Mixtes | 2021/03/24 10:15 | Magee S / Magee C v Jansen J R / Ostermeyer K | W | 0-2 |
| Open de Suisse - Doubles Mixtes | 2021/03/04 10:00 | Jansen J R / Ostermeyer K v Lai/Tan | L | 0-2 |
| Open de Suisse - Doubles Mixtes | 2021/03/02 16:45 | Jansen J R / Ostermeyer K v Orteu Y / Muller A | W | 2-1 |
| European Team Championships XD | 2021/02/17 17:20 | Nohr/Magelund v Jansen J R / Ostermeyer K | L | 2-1 |
| Open de Thaïlande - Doubles Mixtes | 2021/01/19 04:50 | Chan P S / Goh L Y v Jansen J R / Ostermeyer K | L | 2-0 |
| Open de Thaïlande - Doubles Mixtes | 2021/01/13 06:40 | Jansen J R / Ostermeyer K v Ellis/Smith | L | 0-2 |
| SaarLorLux Open 2019, XD | 2020/10/29 17:15 | Geiss/Efler v Jansen J R / Ostermeyer K | L | 2-1 |
| SaarLorLux Open 2019, XD | 2020/10/28 13:15 | Jansen J R / Ostermeyer K v Mikkelsen/Soby | W | 2-0 |
| Open d'Angleterre - Double Mixtes | 2021/03/18 13:00 | Christiansen/Boje v Watanabe/Higashino | L | 0-2 |
| Open d'Angleterre - Double Mixtes | 2021/03/17 18:40 | Christiansen/Boje v Tabeling / Piek | W | 2-0 |
| Open de Suisse - Doubles Mixtes | 2021/03/07 10:00 | Christiansen/Boje v Delrue/Gicquel | L | 0-2 |
| Open de Suisse - Doubles Mixtes | 2021/03/06 10:15 | Christiansen/Boje v Ellis/Smith | W | 2-0 |
| Open de Suisse - Doubles Mixtes | 2021/03/05 13:35 | Chan P S / Goh L Y v Christiansen/Boje | W | 1-2 |
| Open de Suisse - Doubles Mixtes | 2021/03/04 10:35 | Alimov R / Davletova A v Christiansen/Boje | W | 0-2 |
| Open de Suisse - Doubles Mixtes | 2021/03/02 15:15 | Christiansen/Boje v Leydon-Davis O / Pak A | W | 2-0 |
| European Team Championships XD | 2021/02/19 16:00 | Christiansen/Boje v Lamsfuss M / Herttrich I | L | 0-2 |