| Akita Masters 2019, WD | 2019/08/16 03:20 | Iwanaga/Nakanishi v Sakuram. / Takah. | L | 0-2 |
| Akita Masters 2019, WD | 2019/08/15 03:55 | Kawashima M / Saito N v Iwanaga/Nakanishi | W | 0-2 |
| Akita Masters 2019, WD | 2019/08/14 06:00 | Iwanaga/Nakanishi v Istarani N K M / Kusumah T O | W | 2-0 |
| Finnish Open WD | 2019/04/06 14:30 | Honda E / Shimizu N v Iwanaga/Nakanishi | L | 2-1 |
| Finnish Open WD | 2019/04/05 19:00 | Pai Y P / Wu T J v Iwanaga/Nakanishi | W | 0-2 |
| Finnish Open WD | 2019/04/05 14:20 | Iwanaga/Nakanishi v Ercetin/Inci | W | 2-0 |
| China Open 2018, Women Doubles | 2019/09/18 09:30 | Birch C / Smith L v Polii G / Rahayu A | L | 0-2 |
| Kharkiv International 2019, WD | 2019/09/08 09:00 | Birch C / Smith L v Honderich R / Tsai K | W | 2-0 |
| Kharkiv International 2019, WD | 2019/09/07 14:00 | Birch C / Smith L v Ercetin/Inci | W | 2-0 |
| Kharkiv International 2019, WD | 2019/09/07 07:40 | Birch C / Smith L v Janssens E / Ostermeyer K | W | 2-0 |
| World Championships WD | 2019/08/20 15:20 | Birch C / Smith L v Bolotova E / Davletova A | L | 0-2 |
| Japan Open WD | 2019/07/24 03:00 | Matsutomo M / Takahashi A v Birch C / Smith L | L | 2-0 |
| Indonesia Open WD | 2019/07/17 02:30 | Supajirakul P / Taerattanachai S v Birch C / Smith L | L | 2-0 |
| European Games WD | 2019/06/29 15:00 | Birch C / Smith L v Piek S / Seinen C | L | 1-2 |