Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF - M15 Nishi-Tokyo | 2019/03/13 05:55 | Kousuke Ogura v Ryota Tanuma | 2-6,6-7 |
| ITF Japan F4 | 2016/03/28 01:00 | Ryota Tanuma v Kousuke Ogura | 6-4,2-6,6-2 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/13 01:00 | Sekiguchi, Shuichi v Ryota Tanuma | 7-6,6-1 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/07 00:50 | Kokoro Isomura v Ryota Tanuma | 6-4,6-3 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/05 02:00 | Ryota Tanuma v Yunseok Jang | 6-4,7-5 |
| Challenger Matsuyama | 2022/11/06 01:00 | Ryota Tanuma v Naoki Nakagawa | 3-6,4-6 |
| Challenger Yokohama | 2022/11/01 05:55 | Damir Dzumhur v Ryota Tanuma | 6-3,6-1 |
| Challenger Yokohama | 2022/10/31 01:30 | Kawakami, Rimpei v Ryota Tanuma | 6-7,6-4,4-6 |
| Challenger Seoul | 2022/10/09 06:00 | Hamad Medjedovic v Ryota Tanuma | 6-4,6-3 |
| ATP Tokyo | 2022/10/01 07:55 | Ryota Tanuma v Ramkumar Ramanathan | 5-7,3-6 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/15 03:20 | Kousuke Ogura v Kazuki Nishiwaki | 4-6,7-5,2-6 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/12 07:10 | Sanhui Shin v Kousuke Ogura | 7-5,4-6,6-7 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/05 02:00 | Jumpei Yamasaki v Kousuke Ogura | 6-4,6-4 |
| Challenger Lima | 2023/08/20 18:20 | Rodríguez, Sebastián v Kousuke Ogura | 6-4,7-5 |
| Santo Domingo, Dominican Republic | 2023/08/08 14:00 | Panta Herreros, Jorge Brian v Kousuke Ogura | 4-6,6-1,6-2 |
| ITF M15 Pittsburgh | 2023/07/27 15:00 | Kousuke Ogura v Felix Corwin | 6-2,5-7,1-6 |
| ITF M15 Pittsburgh | 2023/07/25 16:00 | Kousuke Ogura v Enrique Pena | 7-5,6-3 |
| Rochester, Singles M-ITF-USA-19A | 2023/07/21 18:50 | Stice, Tyler v Kousuke Ogura | 6-1,6-3 |