| Spain Masters WD | 03/31 09:05 | 1 | Iwanaga/Nakanishi v Kusuma/Pratiwi | W | 2-1 | |
| Spain Masters WD | 03/30 14:40 | 2 | Iwanaga/Nakanishi v Chang/Yang | W | 2-0 | |
| Spain Masters WD | 03/29 13:45 | 3 | Iwanaga/Nakanishi v Stoeva/Stoeva | W | 2-1 | |
| Spain Masters WD | 03/28 16:15 | 4 | Iwanaga/Nakanishi v Huang/Liang | W | 2-0 | |
| Spain Masters WD | 03/27 15:10 | 5 | Iwanaga/Nakanishi v Buhrova/Kantemyr | W | 2-0 | |
| Swiss Open WD | 03/22 13:15 | 3 | Ching Hsu/Ching Lin v Iwanaga/Nakanishi | L | 2-1 | |
| Swiss Open WD | 03/21 11:00 | 4 | Hsin Lee/Teng v Iwanaga/Nakanishi | W | 0-2 | |
| Swiss Open WD | 03/19 19:05 | 5 | Yang/Chang v Iwanaga/Nakanishi | W | 0-2 | |
| All England Open WD | 03/14 18:05 | 4 | Iwanaga/Nakanishi v Baek/Lee | L | 0-2 | |
| All England Open WD | 03/13 18:40 | 5 | Iwanaga/Nakanishi v Panda/Panda | W | 2-0 | |
| French Open WD | 03/05 15:35 | 5 | Matsumoto/Nagahara v Iwanaga/Nakanishi | L | 2-0 | |
| India Open WD | 01/18 14:35 | 4 | Iwanaga/Nakanishi v Baek/Lee | L | 0-2 | |
| India Open WD | 01/17 07:35 | 5 | Nakanishi/Iwanaga v Efler/Lohau | W | 2-0 | |
| Malaysia Open WD | 01/13 08:55 | 2 | Liu/Tan v Iwanaga/Nakanishi | L | 2-0 | |
| Malaysia Open WD | 01/12 10:30 | 3 | Iwanaga/Nakanishi v Crasto/Ponnappa | W | 2-0 | |
| Malaysia Open WD | 01/11 01:00 | 4 | Kim/Kong v Iwanaga/Nakanishi | W | 0-2 | |
| Malaysia Open WD | 01/09 06:50 | 5 | Nakanishi/Iwanaga v Jeong/Kim | D | Retired | |
| Syed Modi India Int. WD | 12/03 14:10 | 1 | Crasto/Ponnappa v Iwanaga/Nakanishi | W | 1-2 | |
| Syed Modi India Int. WD | 12/02 11:30 | 2 | Iwanaga/Nakanishi v Mapasa/Yu | W | 2-1 | |
| Syed Modi India Int. WD | 12/01 14:05 | - | Hsin Lee/Teng v Iwanaga/Nakanishi | W | 1-2 | |
| Syed Modi India Int. WD | 11/30 11:10 | - | Wang/Wu v Iwanaga/Nakanishi | W | 0-2 | |
| Syed Modi India Int. WD | 11/29 15:35 | 5 | Gupta/Singh v Iwanaga/Nakanishi | W | 0-2 | |
| China Masters WD | 11/23 11:00 | 4 | Fukushima/Hirota v Nakanishi/Iwanaga | L | 2-0 | |
| China Masters WD | 11/21 09:05 | 5 | Iwanaga/Nakanishi v Sung/Hui Yu | W | 2-0 | |
| Japan Masters WD | 11/16 02:40 | - | Matsumoto/Nagahara v Iwanaga/Nakanishi | L | 2-0 | |
| Japan Masters WD | 11/14 06:35 | 5 | Kusuma/Pratiwi v Iwanaga/Nakanishi | W | 0-2 | |
| French Open WD | 10/26 13:45 | 4 | Iwanaga/Nakanishi v Kititharakul/Prajongjai | L | 0-2 | |
| French Open WD | 10/25 10:45 | 5 | Hsin Lee/Teng v Iwanaga/Nakanishi | W | 0-2 | |
| Denmark Open WD | 10/21 09:15 | 2 | Chen/Fan Jia v Iwanaga/Nakanishi | L | 2-0 | |
| Denmark Open WD | 10/20 12:05 | 3 | Iwanaga/Nakanishi v Zhang/Zheng | W | 2-1 |