| UTR Pro Kawaguchi | 2024/03/07 01:00 | Masaya Kobayashi v Yuto Miyagawa | 6-2,6-4 |
| UTR Pro Kawaguchi | 2024/03/04 23:30 | Masaya Kobayashi v Hiiro Sakamoto | 5-7,5-7 |
| 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 Nishi-Tokyo | 2019/03/12 01:00 | Gengo Kikuchi v Masaya Kobayashi | 4-6,7-5,10-6 |
| ITF M15 Nishi-Tokyo | 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 |
| UTR Pro Kawaguchi | 2024/03/07 06:03 | Hiiro Sakamoto v Haruki Katsushima | 4-6,6-7 |
| UTR Pro Kawaguchi | 2024/03/04 00:00 | Haruki Katsushima v Yuto Miyagawa | 6-1,6-4 |
| UTR Pro Kawaguchi | 2024/03/02 01:30 | Haruki Katsushima v Tomohiro Masabayashi | 0-6,4-6 |