Round: 26 Ground: Hardcourt outdoor
| ITF Giappone F6 DM | 2018/04/11 05:10 | Fujii/Ochi v Okamura/Takeuchi | 7-6,7-6 |
| ITF Cina F14 DM | 2017/07/25 08:00 | Okamura/Takeuchi v Huang/Wang | 4-6,6-7 |
| ITF Giappone F7 DM | 2017/06/08 06:00 | Kikuchi/Takeshima v Okamura/Takeuchi | 6-4,7-6 |
| ITF Giappone F7 DM | 2017/06/07 08:00 | Kobayashi/Mochizuki v Okamura/Takeuchi | 4-6,6-4,7-10 |
| ITF Giappone F6 DM | 2017/05/30 08:05 | Okamura/Takeuchi v Watanuki/Watanuki | 4-6,3-6 |
| ITF Cina F6 DM | 2017/05/10 08:30 | Liu/Wang v Okamura/Takeuchi | 6-7,6-4,10-8 |
| ITF Cina F6 DM | 2017/05/09 07:45 | Bai/Zhong v Okamura/Takeuchi | 3-6,3-6 |
| ITF Indonesia F5 DM | 2016/12/10 08:30 | Chung/Imai v Okamura/Takeuchi | 6-2,3-6,10-6 |
| ITF Thailandia F5 DM | 2018/10/03 07:45 | Takeshima/Yamasaki v Andrzejczuk/Yu | 6-3,3-6,13-15 |
| ITF Thailandia F5 DM | 2018/10/01 07:00 | Kossek/Smola v Takeshima/Yamasaki | 4-6,6-7 |