Stadium: Court 7 Round: 54 Ground: Hardcourt outdoor
| ITF M15 Hong Kong | 2020/01/06 02:00 | Kousuke Ogura v Zheng Qi Jonathan Zhang | 2-6,6-1,10-8 |
| ITF M15 Changwon | 2019/10/14 01:30 | Kousuke Ogura v Sungbeen Sim | 3-6,2-6 |
| ITF M15 Changwon | 2019/10/13 01:00 | Kousuke Ogura v Min Gyeom Kim | 6-1,6-2 |
| ITF M15 Nanchang | 2019/10/03 02:00 | Vladimir Ivanov v Kousuke Ogura | 6-1,6-2 |
| ITF M15 Nanchang | 2019/10/02 02:00 | Kousuke Ogura v Seita Watanabe | 4-6,7-5,6-4 |
| ITF M15 Nanchang | 2019/09/26 03:50 | Makoto Ochi v Kousuke Ogura | 6-2,6-1 |
| ITF M15 Nanchang | 2019/09/25 05:00 | Hu Liu v Kousuke Ogura | 0-6,0-6 |
| ITF M15 Nanchang | 2019/09/23 07:45 | Kousuke Ogura v Shinnosuke Hiramatsu | 6-3,6-0 |
| ITF M15 Hong Kong | 2020/01/06 02:00 | Shohei Chikami v Ken Onishi | 4-6,1-6 |
| ITF M15 Te Anau | 2019/12/30 23:00 | Elliot Benchetrit v Ken Onishi | 7-5,6-1 |
| Challenger Kobe | 2019/11/06 01:30 | Luke Saville v Ken Onishi | 6-2,6-2 |
| ITF M25 Taipei | 2019/07/22 04:00 | Han-Chih Lin v Ken Onishi | 6-7,6-3,10-6 |
| ITF M25 Taipei | 2019/07/15 02:00 | Hao-Hsiang Liao v Ken Onishi | 7-6,7-6 |
| ITF M15 Gimcheon | 2019/06/17 05:20 | Ju-Hae Moon v Ken Onishi | 2-6,6-3,10-6 |
| ITF M15 Gimcheon | 2019/06/13 01:30 | Ken Onishi v Seong Chan Hong | 1-6,2-6 |
| ITF M15 Gimcheon | 2019/06/12 01:00 | Ken Onishi v Cing-Yang Meng | 6-4,6-4 |