| ITF W15 Kawaguchi DF | 06/16 01:30 | 27 | Yamaguchi/Yoshioka v Atturu/Katsumi | 1-6,6-4,5-10 | |
| ITF W15 Kawaguchi DF | 06/14 09:50 | 26 | Koyama/Ogata v Yamaguchi/Yoshioka | 3-6,2-6 | |
| ITF W15 Kashiwa DF | 06/08 07:45 | 27 | Arai/Tamura v Yamaguchi/Yoshioka | 6-3,6-4 | |
| ITF W15 Kashiwa DF | 06/06 05:05 | 26 | Yamaguchi/Yoshioka v Inoue/Kobayashi | 3-6,6-2,10-6 |