Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF Japan F4 | 2016/03/28 01:00 | Ryota Tanuma v Kousuke Ogura | 6-4,2-6,6-2 |
| ITF M15 Nishi-Tokyo | 2019/03/11 01:00 | Kousuke Ogura v Sota Fujii | 6-3,2-6,10-8 |
| ITF M15 Nishi-Tama | 2019/03/06 01:00 | Gengo Kikuchi v Kousuke Ogura | 7-5,7-5 |
| ITF M15 Nishi-Tama | 2019/03/05 03:00 | Aoran Wang v Kousuke Ogura | 3-6,2-6 |
| ITF M15 Nishi-Tama | 2019/03/05 01:00 | Kousuke Ogura v Shunrou Takeshima | 7-5,6-3 |
| ITF Thailand F9 | 2018/11/11 04:30 | Kousuke Ogura v Chukang Wang | 1-6,7-5,1-6 |
| ITF Thailand F9 | 2018/11/10 05:00 | Kousuke Ogura v Nawakarn Khunjan | 6-1,6-3 |
| ITF Thailand F8 | 2018/11/03 04:30 | Alexander Donski v Kousuke Ogura | 6-1,4-6,6-2 |
| ITF Thailand F6 | 2018/10/06 05:30 | Daisuke Sumizawa v Kousuke Ogura | 6-3,6-2 |
| ITF M15 Nishi-Tokyo | 2019/03/12 03:20 | Ryota Tanuma v Sho Katayama | 6-4,2-6,10-5 |
| ITF M15 Nishi-Tokyo | 2019/03/11 01:00 | Ryota Tanuma v Shao-Fan Liu | 7-6,6-3 |
| ITF M25 Mildura | 2019/03/05 02:25 | Alec Adamson v Ryota Tanuma | 2-6,6-1,7-6 |
| ITF M25 Albury | 2019/02/28 01:45 | Brydan Klein v Ryota Tanuma | 6-3,6-2 |
| ITF M25 Albury | 2019/02/27 04:50 | Ryota Tanuma v Chanchai Sookton-Eng | 3-6,7-6,6-2 |
| ITF M15 Sharm El Sheikh | 2019/02/19 08:00 | Michael Geerts v Ryota Tanuma | 6-3,6-1 |
| ITF Hong Kong F3 | 2018/12/25 02:00 | Jumpei Yamasaki v Ryota Tanuma | 4-6,7-6,6-4 |
| ITF Thailand F9 | 2018/11/15 03:00 | Yu Hsiou Hsu v Ryota Tanuma | 6-0,6-2 |