Ground: Hardcourt outdoor
| UTR Pro Kawaguchi | 2024/06/24 00:30 | Hikaru Shiraishi v Ryota Tanuma | 4-6,3-6 |
| ITF M15 Yanagawa | 2023/12/20 05:00 | Ryota Tanuma v Hikaru Shiraishi | 0-6,3-6 |
| ITF Japan F8 | 2018/06/14 01:00 | Hikaru Shiraishi v Ryota Tanuma | 2-6,4-6 |
| ITF M15 Harmon | 2025/06/14 01:30 | Kenta Miyoshi v Hikaru Shiraishi | 4-6,6-0,6-3 |
| ITF M15 Harmon | 2025/06/13 02:50 | Colin Sinclair v Hikaru Shiraishi | 2-6,6-7 |
| ITF M15 Harmon | 2025/06/12 02:34 | Yuya Hirose v Hikaru Shiraishi | 1-6,1-6 |
| ITF M15 Harmon | 2025/06/11 03:59 | Yuhei Kono v Hikaru Shiraishi | 2-6,2-6 |
| ITF M15 Karuizawa | 2025/06/06 01:40 | Yuto Oki v Hikaru Shiraishi | 6-4,7-6 |
| ITF M15 Karuizawa | 2025/06/05 01:10 | Yu Tanaka v Hikaru Shiraishi | 1-6,3-6 |
| ITF M15 Karuizawa | 2025/06/04 04:41 | Riku Takahata v Hikaru Shiraishi | 0-6,0-1 |
| ITF M15 Daegu | 2025/05/27 01:00 | Jay Friend v Hikaru Shiraishi | 6-3,7-6 |
| ITF M15 Harmon | 2025/06/10 02:00 | Geun Jun Kim v Ryota Tanuma | 6-4,6-2 |
| ITF M15 Karuizawa | 2025/06/05 02:40 | Sora Fukuda v Ryota Tanuma | 6-4,4-6,7-6 |
| ITF M15 Karuizawa | 2025/06/04 01:00 | Toshiki Karigyo v Ryota Tanuma | 3-6,2-6 |
| UTR Pro Urayasu | 2025/05/24 02:00 | Ryota Tanuma v Taiyo Kurata | 6-3,6-3 |
| UTR Pro Urayasu | 2025/05/23 09:15 | Ryota Tanuma v Maximus Z Wong | 6-2,4-6,6-3 |
| UTR Pro Urayasu | 2025/05/23 03:35 | Ryota Tanuma v Haru Kawanaka | 6-0,6-3 |
| UTR Pro Urayasu | 2025/05/22 01:00 | Ryota Tanuma v Taketo Takamisawa | 7-6,4-6,6-7 |
| UTR Pro Urayasu | 2025/05/21 01:00 | Jaden Dewandaka Tan v Ryota Tanuma | 5-7,1-6 |