| UTR Pro Kawaguchi | 2024/06/17 00:00 | Taiyo Kurata v Christopher Kosei Ono | 4-6,6-1,6-7 |
| UTR Pro Urayasu | 2024/05/11 03:15 | Kotaro Mochizuki v Christopher Kosei Ono | 6-3,6-4 |
| UTR Pro Urayasu | 2024/05/10 00:00 | Yusuke Yoshikawa v Christopher Kosei Ono | 6-1,7-6 |
| UTR Pro Urayasu | 2024/05/08 03:30 | Yuki Mochizuki v Christopher Kosei Ono | 4-6,6-2,6-2 |
| UTR Pro Urayasu | 2024/05/06 04:30 | Hamish Bartos v Christopher Kosei Ono | 5-7,3-6 |
| 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 |
| ITF M15 Karuizawa | 2024/05/30 00:55 | Woobin Shin v Hikaru Shiraishi | 6-1,6-4 |
| ITF M15 Karuizawa | 2024/05/29 02:30 | Yuichiro Inui v Hikaru Shiraishi | 1-6,3-6 |
| Challenger Taipei | 2024/05/14 05:10 | James Trotter v Hikaru Shiraishi | 4-6,6-3,6-1 |
| Challenger Taipei | 2024/05/12 03:00 | Yan Cheng Chen v Hikaru Shiraishi | 4-6,6-7 |
| ITF M15 Tsukuba | 2024/03/31 02:30 | Hikaru Shiraishi v Kokoro Isomura | 6-1,6-3 |
| ITF M15 Tsukuba | 2024/03/30 01:25 | Hikaru Shiraishi v Yi Zhou | 6-2,6-4 |
| ITF M15 Tsukuba | 2024/03/29 06:45 | Yunseong Chung v Hikaru Shiraishi | 6-2,4-6,4-6 |
| ITF M15 Tsukuba | 2024/03/28 04:20 | Kousuke Ogura v Hikaru Shiraishi | 2-6,2-6 |