| FIVB Doha | 08/12 07:30 | 1 | Betzien/Erdmann v Poniewaz/Poniewaz | 2-1 | |
| FIVB Doha | 08/11 16:45 | 1 | Betzien/Erdmann v Brand/Winter | 2-1 | |
| FIVB Doha | 08/11 12:20 | 1 | Becker/Schröder v Betzien/Erdmann | Retired | |
| FIVB Doha | 08/11 09:00 | 1 | Sowa/Wernitz v Betzien/Erdmann | 1-2 | |
| FIVB Open de Xiamen - Femenino | 07/31 11:00 | 1 | Beeler/Krattiger v Betzien/Erdmann | 2-1 | |
| FIVB Doha | 07/28 02:40 | 1 | Betzien/Erdmann v Kolaric/Basta | 1-2 | |
| FIVB Doha | 07/27 05:50 | 1 | Ermacora/Pristauz v Betzien/Erdmann | 1-2 | |
| FIVB Doha | 07/27 00:50 | 1 | Erdmann/Betzien v Di Giantommaso/Silvestre | 2-1 | |
| FIVB Doha | 07/26 08:00 | - | Urlu/Mermer v Betzien/Erdmann | 2-1 | |
| FIVB Doha | 07/26 02:40 | 1 | McHugh/Schubert v Betzien/Erdmann | Retired | |
| FIVB Doha | 07/20 09:00 | 1 | Huber A./Dressler v Betzien/Erdmann | 2-0 | |
| FIVB Doha | 07/20 04:30 | 1 | Li Zhuoxin/Ch. W. Zhou v Betzien/Erdmann | 0-2 | |
| FIVB Doha | 07/19 05:00 | - | Solovejs/Finsters v Betzien/Erdmann | 2-1 | |
| FIVB Doha | 07/14 12:20 | 1 | Brand/Reinhardt v Betzien/Erdmann | 0-2 | |
| FIVB Doha | 07/14 09:00 | 1 | Betzien/Erdmann v Rudolf/Glücklederer | 0-2 | |
| FIVB Open de Xiamen - Femenino | 06/21 09:30 | 1 | Betzien/Erdmann v Hasegawa/Shimizu | 1-2 | |
| FIVB Open de Xiamen - Femenino | 06/16 14:00 | 1 | Betzien/Erdmann v Lohmann/Popp | 0-2 | |
| FIVB Open de Xiamen | 06/16 09:50 | 1 | Schröder/Becker v Betzien/Erdmann | 2-0 | |
| FIVB Open de Xiamen - Femenino | 06/15 15:50 | 1 | Betzien/Erdmann v Winter/Harms | 2-0 | |
| FIVB Doha | 06/09 12:20 | 1 | Betzien/Erdmann v Fuchs/Urbatzka | 0-2 | |
| FIVB Doha | 06/09 07:20 | 1 | Betzien/Erdmann v John/Lorentz | 2-0 | |
| FIVB Open de Xiamen | 06/03 05:00 | 50 | P. Gao/Li v Betzien/Erdmann | 2-0 | |
| FIVB Open de Xiamen | 06/03 02:00 | 1 | Ehlers/Schumann v Erdmann/Betzien | 2-0 | |
| FIVB Open de Xiamen - Femenino | 06/02 08:40 | 1 | Betzien/Erdmann v Surin/Adisorn | 2-0 | |
| FIVB Open de Xiamen - Femenino | 06/02 06:10 | 1 | Betzien/Erdmann v Takahashi/Ishijima | 2-0 | |
| FIVB Open de Xiamen - Femenino | 06/01 08:00 | 1 | Crabb Tr./Mayer v Erdmann/Betzien | 2-0 | |
| FIVB Open de Xiamen - Femenino | 06/01 03:00 | 1 | Betzien/Erdmann v Zaun/Field | 2-0 | |
| FIVB Open de Xiamen | 03/17 15:00 | 1 | Betzien/Erdmann v Van De Velde/Boehlé | 0-2 | |
| FIVB Open de Xiamen | 03/16 20:00 | 1 | Brouwer/Meeuwsen v Betzien/Erdmann | 2-0 | |
| FIVB Open de Xiamen | 03/16 15:40 | 1 | Betzien/Erdmann v Gorbenko/Ivanov | 2-1 |