Stadium: Court 5 Round: 54 Ground: Hardcourt outdoor
| ITF M25 Kashiwa | 2023/04/02 04:00 | Taisei Ichikawa v Yamato Sueoka | 6-0,7-6 |
| ITF M25 Canberra | 2023/03/23 05:30 | Matthew Dellavedova v Taisei Ichikawa | 6-1,3-6,6-3 |
| ITF M25 Canberra | 2023/03/21 01:30 | Taisei Ichikawa v Lawrence Sciglitano | 6-3,6-3 |
| ITF M25 Canberra | 2023/03/15 23:00 | Taisei Ichikawa v Yuki Mochizuki | 6-7,3-6 |
| ITF M25 Canberra | 2023/03/15 04:20 | Taisei Ichikawa v Brandon Walkin | 6-4,6-3 |
| ITF M15 Monastir | 2023/02/11 12:50 | Taisei Ichikawa v Tao Mu | 3-6,5-7 |
| ITF M15 Monastir | 2023/02/08 10:45 | Taisei Ichikawa v Aleksi Lofman | 6-3,6-4 |
| ITF M15 Monastir | 2023/02/06 11:25 | Taisei Ichikawa v Taym Alazmeh | 6-4,6-1 |
| ITF M25 Kashiwa | 2023/04/02 02:30 | Toru Horie v Hikaru Shiraishi | 6-3,5-7,4-10 |
| ITF M25 Tsukuba | 2023/03/29 02:35 | Hikaru Shiraishi v Tristan Schoolkate | 4-6,0-6 |
| ITF M25 Tsukuba | 2023/03/27 07:10 | Jeremy Jin v Hikaru Shiraishi | 4-6,1-6 |
| ITF M25 Tsukuba | 2023/03/27 02:00 | Yusuke Kusuhara v Hikaru Shiraishi | 4-6,1-6 |
| ITF M15 Monastir | 2023/03/10 08:30 | Florent Bax v Hikaru Shiraishi | 6-4,6-2 |
| ITF M15 Monastir | 2023/03/09 08:30 | Hikaru Shiraishi v Stefanos Sakellaridis | 7-6,6-1 |
| ITF M15 Monastir | 2023/03/08 13:00 | Ryuki Matsuda v Hikaru Shiraishi | 3-6,3-6 |
| ITF M15 Monastir | 2023/03/06 15:40 | Hikaru Shiraishi v Jack Loge | 6-4,6-0 |