Round: 27 Ground: Hardcourt outdoor
| ITF Japan F5 MD | 2015/06/04 05:05 | Katayama/Onozawa v Nagao/Oku | 6-3,7-6 |
| ITF Japan F1 MD | 2017/03/08 04:45 | Cao/Johns v Katayama/Onozawa | 2-6,4-6 |
| Challenger Toyota MD | 2016/11/14 03:55 | Katayama/Onozawa v Kwon/Lim | 6-4,2-6,5-10 |
| ITF Korea F7 MD | 2016/08/31 07:35 | Katayama/Onozawa v Lim/Seol | 3-6,6-2,10-12 |
| ITF Japan F7 MD | 2016/06/09 05:40 | Kibi/Niki v Katayama/Onozawa | 6-4,6-7,10-8 |
| ITF Japan F6 MD | 2016/06/02 03:00 | Katayama/Onozawa v Han/Uesugi | 6-1,6-7,9-11 |
| ITF Japan F6 MD | 2016/06/01 04:20 | Katayama/Onozawa v Kato/Yoshida | 6-3,6-2 |
| ITF Japan F5 MD | 2015/06/04 05:05 | Katayama/Onozawa v Nagao/Oku | 6-3,7-6 |
| ITF Japan F1 MD | 2017/03/07 04:25 | Hashimoto/Tsunematsu v Nagao/Oku | 2-6,6-7 |
| Challenger Kyoto MD | 2017/02/21 10:05 | Ratiwatana/Ratiwatana v Nagao/Oku | 7-5,6-3 |
| ITF Korea F8 MD | 2016/09/09 06:00 | Nam/Song v Nagao/Oku | 6-4,6-4 |
| ITF Korea F8 MD | 2016/09/08 06:30 | Kim/Noh v Nagao/Oku | 5-7,6-3,8-10 |
| ITF Korea F8 MD | 2016/09/07 06:00 | Jeong/Kim v Nagao/Oku | 5-7,3-6 |
| ITF Korea F8 MD | 2016/09/05 07:30 | Lee/Yoon v Nagao/Oku | 6-3,3-6,5-10 |
| ITF Korea F7 MD | 2016/08/29 04:30 | Choi/Moon v Nagao/Oku | 6-4,1-6,10-7 |
| ITF Japan F8 MD | 2016/06/18 05:05 | Nagao/Oku v Ito/Uesugi | 6-4,6-2 |