Stadium: Court 3 Round: 54 Ground: Hardcourt outdoor
| ITF - M15 Yanagawa | 2023/12/20 10:20 | Yuichiro Inui v Yuta Tomida | 0-6,4-6 |
| ITF - M15 Yanagawa | 2023/12/20 03:00 | Yuichiro Inui v Ryuhei Azuma | 6-1,6-2 |
| ITF - M15 Yanagawa | 2023/12/18 03:00 | Yuichiro Inui v Ryusuke Horiuchi | 7-5,6-3 |
| ITF - M25 Kalaburagi | 2023/11/28 05:50 | Manish Ganesh v Yuichiro Inui | 6-1,6-2 |
| ITF - M25 Mumbai | 2023/11/23 06:30 | Yuichiro Inui v Louis Wessels | 4-6,6-7 |
| ITF - M25 Mumbai | 2023/11/22 05:40 | Yuichiro Inui v Shivank Bhatnagar | 6-2,6-1 |
| Challenger - Sydney | 2023/10/29 02:20 | Blake Mott v Yuichiro Inui | 7-5,6-7,6-2 |
| Challenger - Playford | 2023/10/22 05:00 | Yuichiro Inui v Jacob Bradshaw | 1-6,4-6 |
| ITF - M15 Yanagawa | 2023/12/20 02:30 | Hiroki Sakagawa v Ryotaro Matsumura | 2-6,1-6 |
| ITF - M15 Yanagawa | 2023/12/18 01:00 | Kenta Miyoshi v Hiroki Sakagawa | 4-6,6-2,9-11 |
| ITF - M25 Sapporo | 2023/09/11 01:00 | Woobin Shin v Hiroki Sakagawa | 0-6,6-3,10-7 |
| ITF - M25 Sapporo | 2023/09/10 01:00 | Hiroki Sakagawa v Hiroyasu Ehara | 6-7,6-1,10-6 |
| ITF - M25 Sapporo | 2023/09/05 04:20 | Shuichi Sekiguchi v Hiroki Sakagawa | 6-3,6-2 |
| ITF - M25 Sapporo | 2023/09/04 00:55 | Hiroki Sakagawa v Omar Fields | 5-7,6-3,13-11 |
| ITF - M25 Sapporo | 2023/09/03 01:00 | Naoki Tajima v Hiroki Sakagawa | 2-6,3-6 |
| ITF - M25 Anseong | 2023/06/21 03:40 | Hiroki Sakagawa v Duckhee Lee | 1-6,2-6 |