Ground: Hardcourt outdoor
| 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 |