| Open da Holanda - Duplas Femininas | 2019/10/11 16:50 | Iwanaga/Nakanishi v Piek/Seinen | W | 2-0 |
| Open da Holanda - Duplas Femininas | 2019/10/10 16:45 | Boje/Poulsen v Iwanaga/Nakanishi | W | 0-2 |
| Open da Holanda - Duplas Femininas | 2019/10/09 13:15 | Iwanaga/Nakanishi v Birch/Smith | W | 2-0 |
| Akita Masters WD | 2019/08/16 03:20 | Iwanaga/Nakanishi v Sakuramoto/Takahata | L | 0-2 |
| Akita Masters WD | 2019/08/15 03:55 | Kawashima/Saito v Iwanaga/Nakanishi | W | 0-2 |
| Akita Masters WD | 2019/08/14 06:00 | Iwanaga/Nakanishi v Istarani/Kusumah | W | 2-0 |
| Open da Finlândia - Duplas Femininas | 2019/04/06 14:30 | Honda/Shimizu v Iwanaga/Nakanishi | L | 2-1 |
| Open da Finlândia - Duplas Femininas | 2019/04/05 19:00 | Pai/Wu v Iwanaga/Nakanishi | W | 0-2 |
| Open da Holanda - Duplas Femininas | 2019/10/11 16:30 | Hobara/Sone v Efler/Herttrich | W | 1-2 |
| Open da Holanda - Duplas Femininas | 2019/10/09 17:50 | Fankhauser/Tabeling v Efler/Herttrich | W | 0-2 |
| Open da China - Duplas Femininas | 2019/09/17 02:00 | Efler/Herttrich v Kim/Kong | L | 0-2 |
| Open do Vietname - Duplas Femininas | 2019/09/13 12:40 | Efler/Herttrich v Huang/Zhang | L | 1-2 |
| Open do Vietname - Duplas Femininas | 2019/09/13 11:20 | Efler/Herttrich v Huang/Zhang | L | 1-2 |
| Open do Vietname - Duplas Femininas | 2019/09/12 08:00 | Efler/Herttrich v Saito/Shinoya | W | 2-0 |
| Open do Vietname - Duplas Femininas | 2019/09/11 12:30 | Efler/Herttrich v Chen/Zhou | W | 2-1 |
| Campeonato Mundial - Duplas Femininas | 2019/08/21 08:40 | Efler/Herttrich v Li/Zheng | L | 0-2 |