Round: 25 Ground: Hardcourt outdoor
| ITF M15 Nishi-Tokyo | 2024/03/23 01:40 | Ryotaro Taguchi v Hikaru Shiraishi | 2-6,6-4,4-6 |
| ITF M25 Sapporo | 2023/09/05 04:55 | Hikaru Shiraishi v Ryotaro Taguchi | 4-6,6-4,0-6 |
| ITF M15 Kashiwa | 2024/04/01 04:40 | Ryotaro Taguchi v Kousuke Ogura | 6-1,6-2 |
| ITF M15 Kashiwa | 2024/03/31 01:00 | Ryotaro Taguchi v Mattias Southcombe | 6-2,6-2 |
| ITF M15 Tsukuba | 2024/03/28 03:20 | Ryotaro Taguchi v Sanhui Shin | 6-4,2-6,3-6 |
| ITF M15 Tsukuba | 2024/03/27 06:35 | Jangjun Kim v Ryotaro Taguchi | 2-6,0-6 |
| ITF M15 Tsukuba | 2024/03/25 06:00 | Ryotaro Taguchi v Koki Matsuda | 7-6,6-2 |
| ITF M15 Nishi-Tokyo | 2024/03/23 01:40 | Ryotaro Taguchi v Hikaru Shiraishi | 2-6,6-4,4-6 |
| ITF M15 Nishi-Tokyo | 2024/03/22 00:45 | Yan Bai v Ryotaro Taguchi | 3-6,5-7 |
| ITF M15 Nishi-Tokyo | 2024/03/21 01:00 | Ryotaro Taguchi v Jeamoon Lee | 6-3,5-7,6-3 |
| 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 |
| ITF M15 Tsukuba | 2024/03/27 01:00 | Yusuke Kusuhara v Hikaru Shiraishi | 3-6,2-6 |
| ITF M15 Nishi-Tokyo | 2024/03/24 02:00 | Hikaru Shiraishi v Duckhee Lee | 6-4,7-6 |
| ITF M15 Nishi-Tokyo | 2024/03/23 01:40 | Ryotaro Taguchi v Hikaru Shiraishi | 2-6,6-4,4-6 |
| ITF M15 Nishi-Tokyo | 2024/03/22 03:05 | Jie Cui v Hikaru Shiraishi | 6-3,3-6,0-6 |