| UTR Pro Kawaguchi | 2024/03/09 00:00 | Rei Sato v Christopher Kosei Ono | 3-6,7-6,6-7 |
| UTR Pro Kawaguchi | 2024/03/08 05:00 | Masaya Yufu v Christopher Kosei Ono | 2-6,0-6 |
| UTR Pro Kawaguchi | 2024/03/07 01:00 | Kai Kawano v Christopher Kosei Ono | 6-4,6-2 |
| UTR Pro Kawaguchi | 2024/03/05 01:00 | Kazuma Kimura v Christopher Kosei Ono | 3-6,0-6 |
| UTR Pro Kawaguchi | 2024/03/04 07:00 | Riku Takahata v Christopher Kosei Ono | 6-1,6-1 |
| UTR Pro Kawaguchi | 2024/03/03 02:00 | Chun-Ming Yam v Christopher Kosei Ono | 3-6,7-6,3-6 |
| UTR Pro Noda | 2023/10/22 01:30 | Christopher Kosei Ono v Sota Tani | 6-0,6-4 |
| UTR Pro Noda | 2023/10/21 01:30 | Brody Nejedly-Krall v Christopher Kosei Ono | 6-4,6-7,2-6 |