Stadium: Court 6 Round: 62 Ground: Clay
| ITF Japan F3 | 2018/03/17 00:30 | Takahiro Kubo v Kousuke Ogura | 0-6,0-6 |
| ITF Japan F7 Qual | 2018/06/02 01:00 | Kengo Sasaki v Takahiro Kubo | 6-1,6-1 |
| ITF Japan F3 | 2018/03/17 00:30 | Takahiro Kubo v Kousuke Ogura | 0-6,0-6 |
| ITF Portugal F2 Qual | 2018/02/24 12:30 | Takahiro Kubo v Maximiliano R-Mayorga | 2-6,4-6 |
| ITF Portugal F1 | 2018/02/17 10:00 | Takahiro Kubo v Benjamin Niv | 1-6,0-6 |
| ITF Spain F3 | 2018/01/27 14:00 | Takahiro Kubo v Nikita Tatyanin | 1-6,3-6 |
| ITF Spain F2 | 2018/01/20 13:30 | Marc Fornell-Mestres v Takahiro Kubo | 6-0,6-1 |
| ITF Australia F7 Qual | 2017/10/07 04:00 | Takahiro Kubo v Lawrence Bataljin | 2-6,2-6 |
| ITF Australia F6 | 2017/09/30 01:30 | Takahiro Kubo v Cameron Edward Smith | 3-6,0-6 |
| ITF Japan F7 Qual | 2018/06/03 01:00 | Arata Onozawa v Kousuke Ogura | 6-2,6-1 |
| ITF China F5 Qual | 2018/05/05 09:50 | Olly Sadler v Kousuke Ogura | 6-3,3-6,6-2 |
| ITF China F4 Qual | 2018/04/29 03:05 | Liran Chen v Kousuke Ogura | 7-5,6-2 |
| ITF China F4 Qual | 2018/04/28 03:40 | Kousuke Ogura v Ruitong Fang | 6-0,6-2 |
| ITF Japan F6 Qual | 2018/04/08 04:00 | Jie Cui v Kousuke Ogura | 6-4,6-2 |
| ITF Japan F4 | 2018/03/24 04:00 | Issei Okamura v Kousuke Ogura | 6-3,7-5 |
| ITF Japan F3 | 2018/03/18 01:00 | Gengo Kikuchi v Kousuke Ogura | 6-3,6-2 |
| ITF Japan F3 | 2018/03/17 02:30 | Kousuke Ogura v Yuto Sakai | 6-4,6-3 |