Stadium: Center Court A Round: 54 Ground: Hardcourt outdoor
| ITF M25 Tainan | 2023/08/22 02:00 | 타지마, 나오키 v 세인게지크트, 레오니드 | 3-6,5-7 |
| ITF M25 Tainan | 2023/08/17 02:00 | 키르킨, 이어지 v 타지마, 나오키 | 6-3,6-4 |
| ITF M25 Tainan | 2023/08/15 01:55 | Su, Yu-Hsiang v 타지마, 나오키 | 3-6,1-6 |
| ITF M15 Caloundra | 2023/07/31 23:50 | 타지마, 나오키 v Shepp, Anton | 6-1,4-6,7-10 |
| ITF M15 Caloundra | 2023/07/25 23:50 | 타지마, 나오키 v 왈킨, 브란던 | 6-7,6-3,4-6 |
| ITF M15 Caloundra | 2023/07/25 00:00 | 타지마, 나오키 v 델라니, 제시 | 6-2,6-2 |
| ITF M15 Caloundra | 2023/07/24 04:00 | 타지마, 나오키 v Thomas Nicholas Gadecki | 6-2,6-2 |
| ITF M25 Anseong | 2023/06/21 05:15 | 타지마, 나오키 v 모치즈키, 유키 | 0-6,1-6 |
| ITF M25 Anseong | 2023/06/21 03:40 | Hiroki Sakagawa v 이, 덕희 | 1-6,2-6 |
| ITF M25 Anseong | 2023/06/19 05:25 | Seung Woo Cho v Hiroki Sakagawa | 6-1,1-6,6-10 |
| ITF M25 Anseong | 2023/06/19 01:00 | Hyun Woo Cho v Hiroki Sakagawa | 6-4,2-6,4-10 |
| ITF M25 Anseong | 2023/06/18 01:00 | Hiroki Sakagawa v Jungmin Hwang | 6-0,6-2 |
| UTR Pro Tennis Series Texas | 2022/08/20 18:00 | Ribero, Franco v Hiroki Sakagawa | 7-6,5-0 |
| UTR Pro Tennis Series Texas | 2022/08/18 19:30 | Hiroki Sakagawa v Alex Koong | 6-2,5-2 |
| UTR Pro Tennis Series Texas | 2022/08/17 18:00 | Callaway Clark v Hiroki Sakagawa | 0-6,6-4,7-6 |
| UTR Pro Tennis Series Texas | 2022/08/16 22:53 | Hiroki Sakagawa v Vishwa Aduru | 6-0,6-3 |