Round: 25 Ground: Hardcourt outdoor
| ITF Hong Kong F1 | 2017/06/22 03:00 | Masato Shiga v Jacob Grills | 2-6,3-6 |
| ITF Hong Kong F1 | 2017/06/21 11:30 | Masato Shiga v Mousheg Hovhannisyan | 2-6,6-0,6-3 |
| ITF Hong Kong F1 | 2017/06/21 08:35 | Masato Shiga v Zheng Qi Jonathan Zhang | 6-3,6-3 |
| ITF Singapore F2 | 2017/06/02 02:00 | Masato Shiga v N. Vijay Sundar Prashanth | 0-6,2-6 |
| ITF Singapore F2 | 2017/06/01 04:25 | Masato Shiga v Michael Look | 6-3,6-3 |
| ITF Singapore F2 | 2017/06/01 02:00 | Masato Shiga v Michael Look | 6-3,6-3 |
| ITF Singapore F2 | 2017/05/30 10:00 | Masato Shiga v Anirudh Chandrasekar | 6-4,6-0 |
| ITF Singapore F1 | 2017/05/25 02:00 | Hiroyasu Ehara v Masato Shiga | 6-1,6-0 |
| ITF Hong Kong F2 Qual | 2017/06/25 02:00 | Katsuki Nagao v Leo Julien Sebaoun | 6-2,6-1 |
| ITF Hong Kong F2 Qual | 2017/06/24 04:30 | Katsuki Nagao v David Barclay | 6-4,6-2 |
| ITF Hong Kong F1 | 2017/06/22 03:00 | Katsuki Nagao v Jumpei Yamasaki | 3-6,1-6 |
| ITF Hong Kong F1 | 2017/06/21 07:00 | Ye Cong Mo v Katsuki Nagao | 2-6,4-6 |
| ITF Japan F8 | 2017/06/15 03:30 | Gengo Kikuchi v Katsuki Nagao | 6-2,6-2 |
| ITF Japan F8 | 2017/06/14 03:00 | Katsuki Nagao v Taisei Ichikawa | 6-0,6-1 |
| ITF Japan F7 | 2017/06/03 01:00 | Katsuki Nagao v Rimpei Kawakami | 6-7,6-7 |
| ITF Japan F5 | 2017/04/04 04:40 | Tatsuma Ito v Katsuki Nagao | 7-6,6-4 |