| Syed Modi Int. WD | 11/27 06:25 | 5 | Gahlawat S / Jakhar Y v Efler L / Herttrich I | W | 0-2 | |
| Hong Kong Open 2019, WD | 11/13 03:40 | 5 | Piek S / Seinen C v Efler L / Herttrich I | L | 2-1 | |
| China Open 2018, Women Doubles | 11/05 08:30 | 5 | Lee S H / Shin S C v Efler L / Herttrich I | L | 2-0 | |
| SaarLorLux Open 2019, WD | 11/02 16:00 | 2 | Efler L / Herttrich I v Birch C / Smith L | L | 0-2 | |
| SaarLorLux Open 2019, WD | 11/01 18:10 | 3 | Huang J / Zhang S X v Efler L / Herttrich I | W | 0-2 | |
| SaarLorLux Open 2019, WD | 10/31 15:45 | 4 | Heriau V / Lambert M v Efler L / Herttrich I | W | 0-2 | |
| Open de France - Doubles Femmes | 10/23 14:40 | 5 | Efler L / Herttrich I v Dong W / Feng X | L | 0-2 | |
| Denmark Open WD | 10/16 11:50 | 5 | Efler L / Herttrich I v Kim/Kong | L | 0-2 | |
| Dutch Open WD | 10/12 13:10 | 2 | Iwanaga/Nakanishi v Efler L / Herttrich I | L | 2-0 | |
| Dutch Open WD | 10/11 16:30 | 3 | Hobara S / Sone N v Efler L / Herttrich I | W | 1-2 | |
| Dutch Open WD | 10/09 17:50 | 5 | Fankhauser N / Tabeling I v Efler L / Herttrich I | W | 0-2 | |
| China Open 2018, Women Doubles | 09/17 02:00 | 5 | Efler L / Herttrich I v Kim/Kong | L | 0-2 | |
| Vietnam Open WD | 09/13 12:40 | - | Efler L / Herttrich I v Huang J / Zhang S X | L | 1-2 | |
| Vietnam Open WD | 09/13 11:20 | 3 | Efler L / Herttrich I v Huang J / Zhang S X | L | 1-2 | |
| Vietnam Open WD | 09/12 08:00 | 4 | Efler L / Herttrich I v Saito N / Shinoya N | W | 2-0 | |
| Vietnam Open WD | 09/11 12:30 | 5 | Efler L / Herttrich I v Chen X / Zhou C | W | 2-1 | |
| World Championships WD | 08/21 08:40 | 5 | Efler L / Herttrich I v Li/Zheng | L | 0-2 | |
| World Championships WD | 08/20 16:10 | 6 | Marran K K / Ruutel H v Efler L / Herttrich I | W | 0-2 | |
| Thailand Open WD Qual | 07/30 06:00 | - | Efler L / Herttrich I v Chen/Yu | L | 1-2 | |
| Indonesia Open WD | 07/16 02:40 | 5 | Matsutomo M / Takahashi A v Efler L / Herttrich I | L | 2-0 | |
| US Open 2019, WD | 07/10 16:45 | 5 | Efler L / Herttrich I v Baek H N / Jung K E | L | 0-2 | |
| Azerbaïdjan Int.- Double Femmes | 06/07 14:00 | - | Balan A / Sawant P v Efler L / Herttrich I | L | 2-0 | |
| Sudirman Cup WD | 05/20 11:30 | - | Efler L / Herttrich I v Jin Y / Lim M H | W | 2-0 | |
| New Zealand Open 2019, WD | 04/30 22:20 | 5 | Fukushima/Hirota v Efler L / Herttrich I | L | 2-0 | |
| Orléans Masters - Doubles Femmes | 03/20 16:00 | 5 | Bukoviczki N / Gonda D v Efler L / Herttrich I | - | Walkover | |
| Open de Suisse - Doubles Femmes | 03/14 14:10 | 4 | Matsuyama/Shida v Efler L / Herttrich I | L | 2-0 | |
| Open de Suisse - Doubles Femmes | 03/13 11:40 | 5 | Basova A / Fuchsova M v Efler L / Herttrich I | W | 0-2 | |
| Open d'Allemagne - Doubles Femmes | 02/27 16:25 | 5 | Efler L / Herttrich I v Stoeva/Stoeva | L | 0-2 | |
| Masters d'Espagne - Doubles Femmes | 02/20 08:00 | 5 | Efler L / Herttrich I v Chang/Yang | L | 1-2 | |
| Giraldilla Int. XD | 02/15 15:00 | - | Birch C / Smith L v Efler L / Herttrich I | L | 2-0 |