Stadium: Court 6 Round: 25 Ground: Clay
| ITF Japan F7 | 2018/06/10 01:00 | Takashi Saito v Rio Noguchi | 6-3,6-4 |
| ITF Japan F7 | 2018/06/09 03:20 | Takashi Saito v Gengo Kikuchi | 4-6,7-6,6-3 |
| ITF Japan F7 | 2018/06/08 01:00 | Sora Fukuda v Takashi Saito | 1-6,6-2,4-6 |
| ITF Japan F7 | 2018/06/07 02:00 | Kaito Uesugi v Takashi Saito | 6-0,5-7,5-7 |
| ITF Japan F7 | 2018/06/05 03:35 | Arata Onozawa v Takashi Saito | 6-7,4-6 |
| ITF Vietnam F3 | 2018/05/16 06:00 | Takashi Saito v Min-Kyu Song | 6-1,6-0 |
| ITF Vietnam F3 | 2018/05/14 03:00 | Takashi Saito v Matthew Romios | 7-6,6-1 |
| ITF Vietnam F2 | 2018/05/11 03:00 | Rio Noguchi v Takashi Saito | 4-6,7-5,6-3 |
| ITF Japan F8 | 2018/06/11 00:30 | Kousuke Ogura v Keisuke Numajiri | 6-2,6-1 |
| 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 |