| ITF M25 Matsuyama MD | 04/11 07:10 | 28 | Hazawa/Tajima v Okamura/Sekiguchi | 3-6,7-6,10-4 | |
| ITF M25 Matsuyama MD | 04/11 04:30 | 27 | Kono/Sakai v Okamura/Sekiguchi | 7-6,5-7,8-10 | |
| ITF M25 Matsuyama MD | 04/09 07:55 | 26 | Otsuka/Yudate v Okamura/Sekiguchi | 2-6,3-6 | |
| ITF Japan F2 MD | 03/13 05:15 | 26 | Okamura/Sekiguchi v Seol/Song | 4-6,6-7 |