Round: 26 Ground: Clay
| ITF China F6 MD | 2017/05/10 08:30 | Liu/Wang v Okamura/Takeuchi | 6-7,6-4,10-8 |
| ITF China F6 MD | 2017/05/09 07:45 | Bai/Zhong v Okamura/Takeuchi | 3-6,3-6 |
| ITF Indonesia F5 MD | 2016/12/10 08:30 | Chung/Imai v Okamura/Takeuchi | 6-2,3-6,10-6 |
| ITF Indonesia F5 MD | 2016/12/09 10:15 | Okamura/Takeuchi v Barki/Rungkat | 7-6,6-7,10-6 |
| ITF Indonesia F5 MD | 2016/12/09 07:00 | Hobbs/Kim v Okamura/Takeuchi | 2-6,3-6 |
| ITF Indonesia F5 MD | 2016/12/06 08:45 | K Putro/Nugroho v Okamura/Takeuchi | 3-6,4-6 |
| ITF Japan F5 MD | 2016/04/09 05:25 | Okamura/Takeuchi v Imai/Niki | 3-6,4-6 |
| ITF Japan F5 MD | 2016/04/05 07:30 | Kawachi/Suzuki v Okamura/Takeuchi | 3-6,3-6 |
| ITF Japan F3 MD | 2017/03/23 05:30 | Watanuki/Watanuki v Ehara/Niki | 6-7,6-7 |
| ITF Japan F3 MD | 2017/03/20 07:20 | Watanuki/Watanuki v Moritani/Shiga | 6-3,6-3 |
| Challenger Toyota MD | 2016/11/14 05:30 | Watanuki/Watanuki v Ratiwatana/Yi | 3-6,4-6 |
| Challenger Kobe - MD | 2016/11/10 05:00 | Masur/Pavic v Watanuki/Watanuki | 2-6,6-3,10-5 |
| Challenger Kobe - MD | 2016/11/07 06:10 | Watanuki/Watanuki v Peng/Uchiyama | 2-6,6-3,11-9 |
| ITF Japan F7 MD | 2016/06/11 06:30 | Watanuki/Watanuki v Moritani/Okamura | 6-3,6-4 |
| ITF Japan F7 MD | 2016/06/10 05:40 | Watanuki/Watanuki v Han/Uesugi | 3-6,7-6,10-6 |
| ITF Japan F7 MD | 2016/06/09 05:55 | Nagao/Oku v Watanuki/Watanuki | 6-2,3-6,8-10 |