Stadion: Court 5 Round: 26 Ground: Hardcourt outdoor
| ITF - M15 - Tsukuba - Herrendoppel | 2019/03/26 05:55 | Okamura/Takeuchi v Takeshima/Yamasaki | 2-6,1-6 |
| ITF - Japan F6 - Herrendoppel | 2018/04/11 05:10 | Fujii/Ochi v Okamura/Takeuchi | 7-6,7-6 |
| ITF - China F14 - Herrendoppel | 2017/07/25 08:00 | Okamura/Takeuchi v Huang/Wang | 4-6,6-7 |
| ITF - Japan F7 - Herrendoppel | 2017/06/08 06:00 | Kikuchi/Takeshima v Okamura/Takeuchi | 6-4,7-6 |
| ITF - Japan F7 - Herrendoppel | 2017/06/07 08:00 | Kobayashi/Mochizuki v Okamura/Takeuchi | 4-6,6-4,7-10 |
| ITF - Japan F6 - Herrendoppel | 2017/05/30 08:05 | Okamura/Takeuchi v Watanuki/Watanuki | 4-6,3-6 |
| ITF - China F6 - Herrendoppel | 2017/05/10 08:30 | Liu/Wang v Okamura/Takeuchi | 6-7,6-4,10-8 |
| ITF - China F6 - Herrendoppel | 2017/05/09 07:45 | Bai/Zhong v Okamura/Takeuchi | 3-6,3-6 |