| All England Open DF | 2020/03/11 20:20 | Piek/Seinen v Matsumoto/Nagahara | L | 0-2 |
| Masters di Spagna DF | 2020/02/21 15:40 | Piek/Seinen v Kititharakul/Prajongjai | L | 0-2 |
| Masters di Spagna DF | 2020/02/20 15:05 | Bolotova/Davletova v Piek/Seinen | W | 0-2 |
| Campionati europei a squadre DF | 2020/02/11 15:30 | Fruergaard/Thygesen v Piek/Seinen | L | 2-0 |
| Masters di Thailandia DF | 2020/01/21 09:40 | Piek/Seinen v Hsu/Hu | L | 0-2 |
| Masters di Malesia DF | 2020/01/09 03:00 | Lee/Shin v Piek/Seinen | L | 2-0 |
| Masters di Malesia DF | 2020/01/07 09:25 | Delrue/Palermo v Piek/Seinen | W | 0-2 |
| Open di Hong Kong DF | 2019/11/14 07:20 | Matsutomo/Takahashi v Piek/Seinen | L | 2-0 |
| SaarLorLux Open WD | 2020/10/27 14:15 | Tirtosentono/Van Der Aar v Magelund/Ravn | L | 1-2 |