Stadium: Court 5 Round: 62 Ground: Clay
| ITF Japan F8 | 2018/06/09 01:00 | Masaya Kobayashi v Steven Goh | 3-6,6-3,6-0 |
| ITF Japan F7 Qual | 2018/06/02 01:00 | Masaya Kobayashi v Kazuki Shimizu | 6-7,3-6 |
| ITF Japan F6 Qual | 2018/04/08 04:00 | Ryota Kishi v Masaya Kobayashi | 6-2,6-1 |
| ITF Japan F3 | 2018/03/19 02:15 | Masaya Kobayashi v Takashi Saito | 6-4,4-6,6-4 |
| ITF Japan F2 | 2018/03/12 02:30 | Kento Takeuchi v Masaya Kobayashi | 6-3,4-6,6-3 |
| ITF Japan F1 | 2018/03/05 01:00 | Gengo Kikuchi v Masaya Kobayashi | 6-2,7-5 |
| ITF Japan F1 | 2018/03/04 01:00 | Tomohiro Masabayashi v Masaya Kobayashi | 1-6,6-3,5-7 |
| ITF Turkey F7 | 2018/02/21 14:25 | Attila Balazs v Masaya Kobayashi | 6-1,6-3 |
| ITF Japan F7 | 2018/06/04 03:10 | Kaito Itsusaki v Taisei Miyamoto | 6-1,6-7,6-2 |
| ITF Japan F7 Qual | 2018/06/03 02:45 | Taisei Miyamoto v Yuga Tashiro | 5-7,4-6 |
| ITF Japan F7 Qual | 2018/06/02 01:00 | Daisuke Sumizawa v Taisei Miyamoto | 2-6,4-6 |
| ITF Japan F8 | 2017/06/11 00:00 | Taisei Miyamoto v Yuki Matsuo | 1-6,5-7 |
| ITF Japan F8 | 2017/06/10 04:00 | Taisei Miyamoto v Takahiro Kubo | 6-1,6-2 |
| ITF Japan F6 Qual | 2017/05/27 01:00 | Tomohiro Masabayashi v Taisei Miyamoto | 6-3,7-5 |
| ITF Japan F4 | 2017/03/25 01:00 | Taisei Miyamoto v Takuya Kumasaka | 6-2,6-3 |
| ITF Japan F6 Qual | 2016/05/28 01:00 | Ryota Kishi v Taisei Miyamoto | 6-1,6-3 |