| World Championships WD | 12/16 09:00 | 6 | Iwanaga/Nakanishi v Polii/Rahayu | - | Walkover | |
| World Championships WD | 12/13 09:40 | 6 | Kozyreva/Mariia Sukhova v Iwanaga/Nakanishi | W | 0-2 | |
| Indonesia Open WD | 11/25 02:00 | - | Iwanaga/Nakanishi v Matsumoto/Sakuramoto | L | 0-2 | |
| Indonesia Open WD | 11/24 01:00 | - | Hoshi/Matsuda v Iwanaga/Nakanishi | W | 1-2 | |
| Indonesia Masters WD | 11/16 08:00 | 5 | Jeong/Kim v Iwanaga/Nakanishi | L | 2-0 | |
| Hylo Open WD | 11/07 12:00 | 1 | Hoshi/Matsuda v Iwanaga/Nakanishi | L | 2-0 | |
| Hylo Open WD | 11/06 13:20 | - | Iwanaga/Nakanishi v Ramadhanti/Sugiarto | W | 2-0 | |
| Hylo Open WD | 11/05 14:30 | - | Efler/Lohau v Iwanaga/Nakanishi | W | 0-2 | |
| Hylo Open WD | 11/04 10:00 | - | Moore/Somerville v Iwanaga/Nakanishi | W | 0-2 | |
| Hylo Open WD | 11/03 15:15 | 5 | Iwanaga/Nakanishi v Fruergaard/Thygesen | W | 2-0 | |
| Belgian Int. WD | 10/30 15:00 | - | Iwanaga/Nakanishi v MacPherson/Torrance | W | 2-0 | |
| Belgian Int. WD | 10/29 17:30 | - | Jongsathapornparn/Muenwong v Iwanaga/Nakanishi | W | 1-2 | |
| Belgian Int. WD | 10/29 09:00 | 3 | Iwanaga/Nakanishi v Jille/Seinen | W | 2-1 | |
| Belgian Int. WD | 10/28 16:25 | - | Iwanaga/Nakanishi v O'Donnell/Tolman | W | 2-0 | |
| Dutch Open WD | 10/13 12:00 | 1 | Stoeva/Stoeva v Iwanaga/Nakanishi | L | 2-0 | |
| Dutch Open WD | 10/12 13:10 | 2 | Iwanaga/Nakanishi v Efler/Herttrich | W | 2-0 | |
| Dutch Open WD | 10/11 16:50 | 3 | Iwanaga/Nakanishi v Piek/Seinen | W | 2-0 | |
| Dutch Open WD | 10/10 16:45 | 4 | Bøje/Poulsen v Iwanaga/Nakanishi | W | 0-2 | |
| Dutch Open WD | 10/09 13:15 | 5 | Nakanishi/Iwanaga v Birch/Smith | W | 2-0 | |
| Akita Masters WD | 08/16 03:20 | 3 | Iwanaga/Nakanishi v Sakuramoto/Takahata | L | 0-2 | |
| Akita Masters WD | 08/15 03:55 | 4 | Kawashima/Saito v Iwanaga/Nakanishi | W | 0-2 | |
| Akita Masters WD | 08/14 06:00 | 5 | Iwanaga/Nakanishi v Istarani/Kusumah | W | 2-0 | |
| Finnish Open WD | 04/06 14:30 | - | Honda/Shimizu v Iwanaga/Nakanishi | L | 2-1 | |
| Finnish Open WD | 04/05 19:00 | - | Pai/Wu v Iwanaga/Nakanishi | W | 0-2 | |
| Finnish Open WD | 04/05 14:20 | - | Iwanaga/Nakanishi v Ercetin/Inci | W | 2-0 |