Stadium: Court 1 Round: 45 Ground: Hardcourt outdoor
| ITF Japan F8 | 2018/06/13 01:00 | Gengo Kikuchi v Masaya Kobayashi | 6-0,6-1 |
| ITF Japan F1 | 2018/03/05 01:00 | Gengo Kikuchi v Masaya Kobayashi | 6-2,7-5 |
| ITF M15 Nishitōkyō | 2019/03/11 02:00 | Gengo Kikuchi v Pak Long Yeung | 6-4,6-2 |
| ITF M15 Nishi-Tama | 2019/03/08 02:30 | Gengo Kikuchi v Jumpei Yamasaki | 6-7,6-4,3-6 |
| ITF M15 Nishi-Tama | 2019/03/06 01:00 | Gengo Kikuchi v Kousuke Ogura | 7-5,7-5 |
| ITF Chinese Taipei F2 | 2018/07/24 02:00 | Hsien-Yin Peng v Gengo Kikuchi | 6-3,6-4 |
| ITF Chinese Taipei F1 | 2018/07/18 03:05 | Ti Chen v Gengo Kikuchi | 6-2,6-3 |
| ITF Japan F8 | 2018/06/17 02:00 | Rio Noguchi v Gengo Kikuchi | 6-3,6-4 |
| ITF Japan F8 | 2018/06/16 02:00 | Gengo Kikuchi v Sho Katayama | 6-4,7-5 |
| ITF Japan F8 | 2018/06/15 01:30 | Yuya Kibi v Gengo Kikuchi | 6-4,4-6,3-6 |
| 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 |
| 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 |