Round: 26 Ground: Clay
| ITF Singapore F1 MD | 2017/05/27 11:05 | Ehara H / Katayama S v Nagao K / Oku H | 7-6,6-2 |
| ITF Singapore F1 MD | 2017/05/27 07:50 | Moritani S / Takeuchi K v Nagao K / Oku H | 6-7,6-1,8-10 |
| ITF Singapore F1 MD | 2017/05/23 06:25 | Hung J-C / Yu C-Y v Nagao K / Oku H | 4-6,3-6 |
| ITF Japan F5 MD | 2017/04/08 12:40 | Imai S / Niki T v Nagao K / Oku H | 6-4,6-4 |
| ITF Japan F5 MD | 2017/04/07 07:50 | Uesugi K / Watanuki Y v Nagao K / Oku H | 3-6,6-2,5-10 |
| ITF Japan F5 MD | 2017/04/06 05:35 | Onoda K / Shiga M v Nagao K / Oku H | 3-6,3-6 |
| ITF Japan F5 MD | 2017/04/06 05:33 | Onoda K / Shiga M v Nagao K / Oku H | 3-6,3-6 |
| ITF Japan F5 MD | 2017/04/03 07:15 | Kobayashi M / Shimabukuro S v Nagao K / Oku H | 2-6,6-7 |