| ITF M15 Tokyo MD | 07/06 06:00 | 29 | Katayama/Kono v Kusuhara/Nakagawa | 4-6,6-7 | |
| ITF M15 Tokyo MD | 07/05 06:30 | 28 | Katayama/Kono v Isomura/Miyoshi | 7-6,6-1 | |
| ITF M15 Tokyo MD | 07/04 08:20 | 27 | Lee/Song v Katayama/Kono | 6-7,3-6 | |
| ITF Japan F5 MD | 04/05 04:15 | 27 | Katayama/Kono v Uesugi/Watanuki | 6-1,3-6,8-10 | |
| ITF Japan F5 MD | 04/03 05:50 | 26 | Kikuchi/Takeshima v Katayama/Kono | 2-6,4-6 |