Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Osaka | 2025/04/24 01:00 | Yusuke Kusuhara v Kokoro Isomura | 6-3,6-2 |
| ITF M15 Osaka | 2025/04/17 02:30 | Kokoro Isomura v Yusuke Kusuhara | 4-6,1-6 |
| ITF M25 Sapporo | 2025/09/11 03:31 | Mark Whitehouse v Kokoro Isomura | 7-5,7-5 |
| ITF M25 Sapporo | 2025/09/09 02:30 | Taisei Ichikawa v Kokoro Isomura | 2-6,1-6 |
| Challenger Shanghai | 2025/09/02 09:00 | Kokoro Isomura v Renta Tokuda | 0-6,2-6 |
| Challenger Shanghai | 2025/09/01 11:40 | Petr Bar Biryukov v Kokoro Isomura | 6-7,5-7 |
| Challenger Shanghai | 2025/08/31 06:00 | Ajeet Rai v Kokoro Isomura | 6-7,6-7 |
| Challenger Zhangjiagang | 2025/08/30 09:20 | Oliver Crawford v Kokoro Isomura | 7-6,6-0 |
| Challenger Zhangjiagang | 2025/08/29 09:30 | Sanhui Shin v Kokoro Isomura | 6-2,2-6,4-6 |
| Challenger Zhangjiagang | 2025/08/27 07:30 | Kokoro Isomura v Jie Cui | 3-6,6-2,7-6 |
| ITF M25 Sapporo | 2025/09/11 01:00 | Charles Broom v Yusuke Kusuhara | 6-4,6-3 |
| ITF M25 Sapporo | 2025/09/10 01:00 | Yusuke Kusuhara v Hiromasa Koyama | 2-6,7-5,6-3 |
| ITF M25 Sapporo | 2025/09/02 01:00 | Yusuke Kusuhara v Daisuke Sumizawa | 1-6,4-5 |
| Challenger Zhangjiagang | 2025/08/24 02:10 | Hanyi Liu v Yusuke Kusuhara | 6-3,6-2 |
| ITF M25 Bali | 2025/08/05 01:30 | Sidharth Rawat v Yusuke Kusuhara | 6-1,6-3 |
| ITF M15 Tokyo | 2025/07/11 02:30 | Woobin Shin v Yusuke Kusuhara | 6-1,6-4 |
| ITF M15 Tokyo | 2025/07/10 03:18 | Yusuke Kusuhara v Taisei Ichikawa | 4-6,6-2,7-6 |
| ITF M15 Tokyo | 2025/07/09 01:00 | Naoya Honda v Yusuke Kusuhara | 6-3,1-6,2-6 |