Ground: Hardcourt indoor
| Challenger Brisbane | 2025/01/27 00:00 | Kokoro Isomura v Colin Sinclair | 6-4,6-4 |
| ITF M15 Luan | 2025/04/15 05:00 | Colin Sinclair v Ye Cong Mo | 4-6,6-3,4-6 |
| ITF M15 Luan | 2025/04/11 03:30 | Colin Sinclair v Woobin Shin | 6-3,3-6,4-6 |
| ITF M15 Luan | 2025/04/10 03:30 | Colin Sinclair v Yaojie Zeng | 4-6,6-3,7-6 |
| ITF M15 Luan | 2025/04/09 03:30 | Colin Sinclair v Suk Hyun Choo | 6-3,6-4 |
| ITF M15 Kashiwa | 2025/04/02 04:00 | Jake Delaney v Colin Sinclair | 4-6,7-6,7-6 |
| ITF M15 Tsukuba | 2025/03/28 01:00 | Colin Sinclair v Hyeon Chung | 2-6,2-6 |
| ITF M15 Tsukuba | 2025/03/26 01:00 | Colin Sinclair v Taisei Ichikawa | 6-3,4-6,6-2 |
| ITF M25 Burnie | 2025/02/19 02:00 | Chase Ferguson v Colin Sinclair | 7-6,6-3 |
| ITF M15 Osaka | 2025/04/17 02:30 | Kokoro Isomura v Yusuke Kusuhara | 4-6,1-6 |
| ITF M15 Osaka | 2025/04/16 09:29 | Kokoro Isomura v Kentaro Otsuka | 6-2,6-1 |
| ITF M15 Kashiwa | 2025/04/04 01:00 | Kokoro Isomura v Taiyo Yamanaka | 5-7,1-6 |
| ITF M15 Kashiwa | 2025/04/01 01:00 | Kokoro Isomura v Shion Itsusaki | 6-4,4-6,6-1 |
| ITF M25 Shenzhen | 2025/03/18 02:00 | Shintaro Imai v Kokoro Isomura | 6-2,6-7,6-4 |
| ITF M25 Luan | 2025/03/13 02:00 | Kokoro Isomura v Hyeon Chung | 5-7,6-1,4-6 |
| ITF M25 Luan | 2025/03/12 07:47 | Kokoro Isomura v Xirui Han | 6-4,4-6,5-1 |
| Challenger Bengaluru | 2025/02/24 07:55 | Ilia Simakin v Kokoro Isomura | 6-1,6-1 |