Stadium: Court 1 Round: 19 Ground: Hardcourt outdoor
| ITF M25 Sapporo | 2023/09/13 03:05 | Collin Altamirano v Yuki Mochizuki | 6-7,4-6 |
| ITF M25 Sapporo | 2023/09/11 03:20 | Yuta Tomida v Collin Altamirano | 3-6,5-7 |
| ITF M25 Hong Kong | 2023/09/06 02:00 | Collin Altamirano v Kazuki Nishiwaki | 3-6,5-7 |
| ITF M25 Hong Kong Qual | 2023/09/04 02:00 | Collin Altamirano v Ren Nakamura | 6-4,6-1 |
| ITF M25 Hong Kong Qual | 2023/09/03 02:00 | Collin Altamirano v Ching Ho Sunny Yue | 6-0,6-2 |
| ITF M25 Hong Kong | 2023/08/31 04:50 | Collin Altamirano v Ajeet Rai | 3-6,3-6 |
| ITF M25 Hong Kong | 2023/08/29 04:05 | Nathan Anthony Barki v Collin Altamirano | 2-6,6-4,2-6 |
| ITF M25 Hong Kong | 2023/08/28 03:25 | Collin Altamirano v Zhao Zhao | 6-2,6-2 |
| ITF M25 Takasaki | 2023/09/17 05:00 | Daiki Yoshimura v Shunsuke Nakagawa | 1-6,1-6 |
| ITF M25 Sapporo | 2023/09/11 00:50 | Ryotaro Taguchi v Shunsuke Nakagawa | 6-2,6-2 |
| ITF M25 Sapporo | 2023/09/10 01:00 | Kenta Nakamura v Shunsuke Nakagawa | 4-6,2-6 |
| ITF M15 Karuizawa | 2023/05/28 01:15 | Shunsuke Nakagawa v Shunrou Takeshima | 6-3,3-6,8-10 |
| ITF M15 Monastir | 2023/04/26 10:40 | Shunsuke Nakagawa v Aziz Ouakaa | 7-6,6-7,3-6 |
| ITF M15 Monastir | 2023/04/24 13:00 | Rayen Hermassi v Shunsuke Nakagawa | 2-6,1-6 |
| ITF M15 Monastir | 2023/04/24 08:00 | Shunsuke Nakagawa v Thomas George Brun | 6-2,6-3 |
| ITF M15 Monastir | 2023/04/20 09:30 | Ye Cong Mo v Shunsuke Nakagawa | 6-2,6-0 |