Stadium: KPI Park - Court 02 Round: 28 Ground: Hardcourt outdoor
Referee:
| ITF M15 Kashiwa | 2025/04/01 01:00 | Kokoro Isomura v Shion Itsusaki | 6-4,4-6,6-1 |
| ITF M15 Tsukuba | 2025/03/26 04:00 | Filip Peliwo v Shion Itsusaki | 6-2,6-2 |
| ITF M15 Nishi-Tokyo | 2025/03/18 04:00 | Shion Itsusaki v Jumpei Yamasaki | 4-6,4-6 |
| ITF M15 Yanagawa | 2024/11/01 02:00 | Philip Henning v Shion Itsusaki | 6-1,6-3 |
| ITF M15 Yanagawa | 2024/10/31 01:00 | Shion Itsusaki v Kazuki Sugimoto | 7-5,6-3 |
| UTR Pro Kawaguchi | 2024/06/22 09:16 | Shion Itsusaki v Taiyo Kurata | 0-6,3-6 |
| UTR Pro Kawaguchi | 2024/06/22 01:40 | Hiiro Sakamoto v Shion Itsusaki | 7-5,3-6,4-6 |
| UTR Pro Kawaguchi | 2024/06/20 04:50 | Maxime Mareschal-Hay v Shion Itsusaki | 6-4,7-5 |
| UTR Pro Kawaguchi | 2025/05/04 01:00 | Masaya Kobayashi v Ko Nagashima | 6-4,1-6,3-6 |
| UTR Pro Kawaguchi | 2025/05/03 00:00 | Yusuke Yoshikawa v Ko Nagashima | 4-6,7-6,3-6 |
| UTR Pro Kawaguchi | 2025/05/01 04:20 | Ko Nagashima v Yoshinori Kobayashi | 4-6,0-6 |
| UTR Pro Kawaguchi | 2025/05/01 00:00 | Ko Nagashima v Kenta Nakamura | 3-6,0-6 |
| UTR Pro Kawaguchi | 2025/04/30 01:00 | Kotaro Mochizuki v Ko Nagashima | 6-1,6-2 |
| UTR Pro Kawaguchi | 2025/04/29 00:55 | Koyu Yanagi v Ko Nagashima | 6-1,6-0 |
| UTR Pro Kawaguchi | 2025/04/26 01:00 | Kotaro Mochizuki v Ko Nagashima | 6-1,5-7,6-1 |
| UTR Pro Kawaguchi | 2025/04/24 09:30 | Ko Nagashima v Masaki Tonaka | 6-3,5-7,2-6 |