Stadium: Court G Round: 62 Ground: Hardcourt outdoor
| ITF Hong Kong F6 | 2017/12/30 03:00 | Wai Yu Kai v Tomohiro Masabayashi | 3-6,6-3,6-3 |
| ITF Hong Kong F2 Qual | 2017/06/25 03:00 | Mousheg Hovhannisyan v Tomohiro Masabayashi | 6-2,6-4 |
| ITF Hong Kong F2 Qual | 2017/06/24 03:00 | Patrick Rynsaardt v Tomohiro Masabayashi | 1-6,0-6 |
| ITF Hong Kong F1 | 2017/06/21 07:00 | Francis Casey Alcantara v Tomohiro Masabayashi | 6-4,6-4 |
| ITF Hong Kong F1 | 2017/06/19 06:00 | Tomohiro Masabayashi v San Wong | 6-1,6-1 |
| ITF Japan F8 | 2017/06/11 00:00 | Rio Noguchi v Tomohiro Masabayashi | 6-2,6-1 |
| ITF Japan F7 | 2017/06/06 05:40 | Haru Inoue v Tomohiro Masabayashi | 6-1,6-3 |
| ITF Japan F7 | 2017/06/04 01:00 | Naru Shirafuji v Tomohiro Masabayashi | 3-6,4-6 |
| ITF Turkey F7 | 2018/02/21 14:25 | Attila Balazs v Masaya Kobayashi | 6-1,6-3 |
| ITF Turkey F7 | 2018/02/19 07:00 | Masaya Kobayashi v Bogdan Ionut Apostol | 4-6,6-3,4-6 |
| ITF Turkey F7 | 2018/02/18 09:00 | Michiel de Krom v Masaya Kobayashi | 2-6,1-6 |
| ITF Turkey F7 | 2018/02/17 06:30 | Dmitry Myagkov v Masaya Kobayashi | 2-6,3-6 |
| ITF Turkey F6 | 2018/02/12 07:00 | Sho Shimabukuro v Masaya Kobayashi | 6-7,6-3,6-2 |
| ITF Turkey F6 | 2018/02/11 09:00 | Masaya Kobayashi v Felipe Meligeni Rodrigues Alves | 6-2,6-1 |
| ITF Turkey F6 | 2018/02/10 09:00 | Masaya Kobayashi v Mert Alkaya | 6-3,6-3 |
| ITF Hong Kong F6 | 2018/01/03 02:00 | Shintaro Imai v Masaya Kobayashi | 6-3,6-0 |