Stadium: Court 6 Round: 54 Ground: Hardcourt outdoor
| ITF M15 Yanagawa | 2023/12/25 00:30 | 이누이, 유이치로 v Hiroki Sakagawa | 3-6,3-6 |
| ITF M15 Yanagawa | 2023/12/20 02:30 | Hiroki Sakagawa v 마츠무라, 리오타로 | 2-6,1-6 |
| ITF M15 Yanagawa | 2023/12/18 01:00 | Miyoshi, Kenta v Hiroki Sakagawa | 4-6,6-2,9-11 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/11 01:00 | Shin, Woobin v Hiroki Sakagawa | 0-6,6-3,10-7 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/10 01:00 | Hiroki Sakagawa v 에하라, 히로야스 | 6-7,6-1,10-6 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/05 04:20 | 세키구치, 스이치 v Hiroki Sakagawa | 6-3,6-2 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/04 00:55 | Hiroki Sakagawa v 피엘즈, 오마르 | 5-7,6-3,13-11 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/03 01:00 | 타지마, 나오키 v Hiroki Sakagawa | 2-6,3-6 |
| ITF M15 Yanagawa | 2023/12/25 00:30 | Kusuhara, Yusuke v Nakagawa, Shunsuke | 4-6,2-6 |
| ITF M15 Yanagawa | 2023/12/18 01:00 | Nakagawa, Shunsuke v 푸, 훙-린 | 4-6,6-7 |
| Challenger Matsuyama | 2023/11/08 02:35 | 다니엘, 타로 v Nakagawa, Shunsuke | 6-1,6-2 |
| ITF M25 Takasaki | 2023/09/18 03:10 | 알타미라노, 콜린 v Nakagawa, Shunsuke | 6-3,6-2 |
| ITF M25 Takasaki | 2023/09/17 05:00 | Yoshimura, Daiki v Nakagawa, Shunsuke | 1-6,1-6 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/11 00:50 | Ryotaro Taguchi v Nakagawa, Shunsuke | 6-2,6-2 |
| Sapporo, Singles Main, M-ITF-JPN-02A | 2023/09/10 01:00 | Kenta Nakamura v Nakagawa, Shunsuke | 4-6,2-6 |
| Karuizawa, Singles M-ITF-JPN-07A | 2023/05/28 01:15 | Nakagawa, Shunsuke v 타케시마, 순로우 | 6-3,3-6,8-10 |