| ITF - Tainan M25 - MD | 08/22 05:15 | 26 | Masabayashi/Matsuda v Kumasaka/Okamura | 6-2,6-3 | |
| ITF - Tainan M25 - MD | 08/17 08:30 | 27 | Kumasaka/Okamura v Ochi/Yuzuki | 2-6,3-6 | |
| ITF - Tainan M25 - MD | 08/15 06:55 | 26 | Kumasaka/Okamura v Denisov/Sheyngezikht | 6-4,6-7,11-9 | |
| ITF - Anseong M25 - MD | 06/20 04:00 | 26 | Lee/Song v Kumasaka/Okamura | 6-1,6-3 | |
| ITF - Daegu M25 - MD | 06/06 06:20 | 26 | Kumasaka/Okamura v Jang/Shin | 6-4,2-6,8-10 | |
| ITF - Kashiwa M25 - MD | 09/28 04:00 | 26 | Kumasaka/Okamura v Kawachi/Kawakami | 3-6,7-5,6-10 |