| ITF M15 Karuizawa | 2019/05/27 00:00 | Masaya Kobayashi v Jake Delaney | 0-6,5-7 |
| ITF M15 Kofu | 2019/03/18 00:30 | Masaya Kobayashi v Shunrou Takeshima | 2-6,1-6 |
| ITF M15 Nishitōkyō | 2019/03/12 01:00 | Gengo Kikuchi v Masaya Kobayashi | 4-6,7-5,10-6 |
| ITF M15 Nishitōkyō | 2019/03/11 02:00 | Masaya Kobayashi v Cheng-Yu Yu | 6-2,6-2 |
| ITF Japan F8 | 2018/06/13 01:00 | Gengo Kikuchi v Masaya Kobayashi | 6-0,6-1 |
| ITF Japan F8 | 2018/06/11 00:30 | Masaya Kobayashi v Ryuhei Azuma | 6-0,7-5 |
| ITF Japan F8 | 2018/06/09 05:10 | Masaya Kobayashi v Taisei Miyamoto | 6-3,6-3 |
| ITF Japan F8 | 2018/06/09 01:00 | Masaya Kobayashi v Steven Goh | 3-6,6-3,6-0 |
| UTR Pro Taipei | 2023/12/23 07:16 | Hiiro Sakamoto v Yan Cheng Chen | 6-4,5-3 |
| UTR Pro Taipei | 2023/12/22 02:30 | Hiiro Sakamoto v Hao-Yu Lin | 6-2,6-3 |
| UTR Pro Taipei | 2023/12/21 02:30 | Alexander Chang v Hiiro Sakamoto | 7-5,5-0 |
| UTR Pro Taipei | 2023/12/20 02:30 | Ke Hau Hung v Hiiro Sakamoto | 6-0,6-3 |
| UTR Pro Taipei | 2023/12/19 02:30 | Syue-Lian Chuang v Hiiro Sakamoto | 1-6,4-6 |
| UTR Pro Noda | 2023/10/22 01:30 | Hiiro Sakamoto v Yuto Takahashi | 4-6,6-4,6-2 |
| UTR Pro Noda | 2023/10/21 04:50 | Shinde Yuzuki v Hiiro Sakamoto | 6-4,1-6,4-5 |
| UTR Pro Noda | 2023/10/20 00:00 | Hiiro Sakamoto v Ryota Tanuma | 0-6,2-6 |