| Scottish Open MD | 2021/11/26 18:20 | Garaga/Panjala v Flaatten/Rikheim | L | 2-0 |
| Scottish Open MD | 2021/11/26 11:40 | Mohd Sani M A / Mohd Sani M A v Flaatten/Rikheim | W | 0-2 |
| Cyprus Int. MD | 2021/10/15 14:10 | Flaatten/Rikheim v Ioannou/Pissis | W | 2-0 |
| Bulgarian Int. MD | 2021/10/09 08:45 | Gupta/Yap v Flaatten/Rikheim | L | 2-1 |
| Ukraine Int. MD | 2021/09/09 09:20 | Hess D / Volker J C v Flaatten/Rikheim | L | 2-0 |
| Ukraine Int. MD | 2021/09/08 11:40 | Filimon/Pratama v Flaatten/Rikheim | W | 1-2 |
| Latvia Int. MD | 2021/08/28 10:30 | Arif/Haikal v Flaatten/Rikheim | L | 2-0 |
| Masters d'Espagne - Doubles Hommes | 2021/05/18 13:20 | Flaatten/Rikheim v Delrue F / Villeger W | L | 0-2 |
| Welsh Int MD | 2021/12/02 19:40 | Kral/Mendrek v Birker P / Stipsits D | L | 2-1 |
| Czech Open MD | 2021/10/22 17:40 | Birker P / Stipsits D v Beh/Goh | L | 1-2 |
| Dutch Open MD | 2021/10/14 14:50 | Birker P / Stipsits D v Gupta/Yap | L | 0-2 |
| Polish Int. MD | 2021/09/25 12:00 | Birker P / Stipsits D v Filimon/Pratama | L | 0-2 |
| Ukraine Int. MD | 2021/09/09 09:00 | Birker P / Stipsits D v Adam/Lovang | L | 0-2 |
| Spain Int MD | 2021/06/18 15:15 | Birker P / Stipsits D v Man/Tee | L | 0-2 |
| Spain Int MD | 2021/06/18 11:15 | Birker P / Stipsits D v Molares J / Perez J | W | 2-0 |
| Austrian Open - Doubles Hommes | 2021/05/28 15:00 | Birker P / Stipsits D v Matusz M / Trecki W | L | 1-2 |