| ITF M15 Tsukuba MD | 03/27 07:10 | 26 | Lee/Song v Shiraishi/Tajima | 6-2,6-1 | |
| ITF M25 Takasaki MD | 09/21 06:25 | 27 | Shiraishi/Tajima v Ochi/Tanuma | 6-4,4-6,4-10 | |
| ITF M15 Karuizawa MD | 06/04 02:00 | 28 | Shiraishi/Tajima v Fukuda/Watanabe | 4-6,2-6 | |
| ITF M15 Karuizawa MD | 05/31 07:40 | 26 | Inui/Suzuki v Shiraishi/Tajima | 4-6,1-6 |