| ITF Japan F4 MD | 03/31 05:00 | 28 | Sumizawa D / Watanuki Y v Ehara H / Katayama S | 2-6,6-7 | |
| ITF Japan F4 MD | 03/30 06:35 | 27 | Kobayashi M / Matsuzaki Y v Sumizawa D / Watanuki Y | 1-6,2-6 | |
| ITF Japan F4 MD | 03/28 08:05 | 26 | Sumizawa D / Watanuki Y v Okamura I / Onishi K | 6-4,6-4 |