Stadium: Indoor D2 Round: 62 Ground: Clay
| ITF Japan F8 | 2018/06/09 06:10 | Ryota Kishi v Kousuke Ogura | 1-6,2-6 |
| ITF Japan F8 | 2018/06/09 01:00 | Takahiro Kubo v Kousuke Ogura | 0-6,3-6 |
| 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 F8 | 2018/06/09 06:00 | Daiki Kato v Keisuke Numajiri | 6-7,2-6 |
| ITF Japan F3 | 2018/03/17 00:30 | Keisuke Watanuki v Keisuke Numajiri | 3-6,1-6 |
| ITF Japan F1 | 2018/03/04 03:00 | Keisuke Numajiri v Masaki Sasai | 1-6,6-3,0-6 |
| ITF Turkey F8 | 2018/02/24 09:30 | Keisuke Numajiri v Ivan Davydov | 1-6,7-6,5-7 |
| ITF Turkey F7 | 2018/02/17 06:30 | Bogdan Bobrov v Keisuke Numajiri | 6-3,6-2 |
| ITF Vietnam F3 | 2017/11/21 06:10 | Sho Katayama v Keisuke Numajiri | 6-4,6-4 |
| ITF Vietnam F3 | 2017/11/20 04:00 | Lawrence Bataljin v Keisuke Numajiri | 6-4,2-6,6-3 |
| ITF Vietnam F2 | 2017/11/12 04:00 | Jakub Paul v Keisuke Numajiri | 6-7,6-4,6-1 |