Stadium: Royal SC Tennis - Court 05 Ground: Hardcourt outdoor
Referee:
| UTR Pro Noda | 2025/01/12 00:00 | Christopher Kosei Ono v Seiya Nakanishi | 6-7,6-2,6-3 |
| UTR Pro Noda | 2025/01/11 03:50 | Seiya Nakanishi v Kotaro Mochizuki | 6-3,6-7,7-6 |
| UTR Pro Noda | 2025/01/10 00:00 | Kosuke Shibano v Seiya Nakanishi | 6-1,6-1 |
| UTR Pro Noda | 2025/01/09 00:40 | Arjun Mehrotra v Seiya Nakanishi | 6-3,6-2 |
| UTR Pro Noda | 2025/01/08 01:30 | Yuga Tashiro v Seiya Nakanishi | 6-4,6-2 |
| UTR Pro Noda | 2025/01/06 00:30 | Taiyo Sato v Seiya Nakanishi | 1-6,6-7 |
| UTR Pro Yokohama | 2024/12/01 00:00 | Tokitaka Ito v Seiya Nakanishi | 6-2,6-6 |
| UTR Pro Yokohama | 2024/11/30 03:00 | Kairi Inoue v Seiya Nakanishi | 3-6,6-7 |
| UTR Pro Kawaguchi | 2024/06/29 09:00 | Yoshinori Kobayashi v Kosuke Nakanishi | 1-6,2-6 |
| UTR Pro Kawaguchi | 2024/06/29 01:00 | Shu Matsuoka v Yoshinori Kobayashi | 6-7,4-6 |
| UTR Pro Kawaguchi | 2024/06/27 00:30 | Corey Craig v Yoshinori Kobayashi | 6-1,6-3 |