Stadium: KPI Park - Court 02 Ground: Hardcourt outdoor
Referee:
| UTR Pro Kawaguchi | 2024/08/13 03:30 | Daisuke Sumizawa v Christopher Kosei Ono | 6-2,6-1 |
| UTR Pro Yokohama | 2025/02/03 04:15 | Arjun Mehrotra v Daisuke Sumizawa | 5-7,6-4,7-6 |
| UTR Pro Noda | 2025/01/19 04:00 | Ryotaro Matsumura v Daisuke Sumizawa | 6-4,3-6,6-3 |
| UTR Pro Noda | 2025/01/17 00:30 | Daisuke Sumizawa v Hiroyasu Ehara | 6-1,6-0 |
| UTR Pro Noda | 2025/01/15 01:35 | Daisuke Sumizawa v Ryoto Tachi | 6-4,6-1 |
| UTR Pro Noda | 2025/01/13 00:30 | Koyu Yanagi v Daisuke Sumizawa | 3-6,3-6 |
| ITF M25 Bali | 2025/01/02 05:00 | Daisuke Sumizawa v Chase Ferguson | 3-6,2-6 |
| ITF M25 Bali | 2025/01/01 03:00 | Daisuke Sumizawa v Yusuke Kusuhara | 6-3,6-0 |
| ITF M15 Bali | 2024/12/24 03:05 | Daisuke Sumizawa v Tomohiro Masabayashi | 4-6,7-6,2-6 |
| UTR Pro Yokohama | 2025/02/01 09:30 | Christopher Kosei Ono v Daisuke Inagawa | 6-4,7-6 |
| UTR Pro Yokohama | 2025/02/01 05:50 | Christopher Kosei Ono v Daiki Sato | 7-5,2-6,6-4 |
| UTR Pro Yokohama | 2025/01/31 01:00 | Kotaro Mochizuki v Christopher Kosei Ono | 4-6,7-5,6-2 |
| UTR Pro Yokohama | 2025/01/30 04:45 | Kazuki Nishiwaki v Christopher Kosei Ono | 0-6,7-5,7-5 |
| UTR Pro Yokohama | 2025/01/27 02:00 | Christopher Kosei Ono v Toshiki Karigyo | 7-5,3-6,5-7 |
| UTR Pro Noda | 2025/01/18 03:30 | Koki Matsuda v Christopher Kosei Ono | 6-1,7-5 |
| UTR Pro Noda | 2025/01/17 01:10 | Maxime Mareschal-Hay v Christopher Kosei Ono | 6-7,7-5,6-2 |
| UTR Pro Noda | 2025/01/16 01:55 | Ammar Elamin v Christopher Kosei Ono | 6-4,6-3 |