Stadium: Court 13 Round: 25 Ground: Hardcourt outdoor
| ITF Singapore F2 | 2018/05/25 03:00 | Kazuki Nishiwaki v Collin Altamirano | 7-5,2-6,3-6 |
| ITF M15 Naples | 2023/02/21 14:30 | Collin Altamirano v Bryce Nakashima | 3-6,3-6 |
| ITF M15 Naples | 2023/02/20 17:00 | Kousuke Ogura v Collin Altamirano | 2-6,3-6 |
| ITF M15 Edmond | 2023/01/25 22:15 | Ezekiel Clark v Collin Altamirano | 6-0,4-6,6-2 |
| ITF M15 Ithaca | 2023/01/17 18:30 | Nathan Ponwith v Collin Altamirano | 6-4,6-1 |
| ITF M25 Nottingham | 2022/05/10 09:00 | Julian Cash v Collin Altamirano | 6-7,6-2,7-6 |
| ITF M25 Nottingham | 2022/05/04 14:10 | Collin Altamirano v Giovanni Oradini | 3-6,1-6 |
| ITF M15 Orange Park | 2022/04/20 14:00 | Martin Damm v Collin Altamirano | 6-4,7-6 |
| ITF M15 Sunrise | 2022/04/13 15:25 | Collin Altamirano v Ezekiel Clark | 7-6,4-6,2-6 |
| ITF M25 Jakarta | 2023/04/17 06:25 | Kazuki Nishiwaki v Yuta Kawahashi | 4-6,4-6 |
| ITF M25 Jakarta | 2023/04/13 04:25 | Yuta Shimizu v Kazuki Nishiwaki | 6-2,6-4 |
| ITF M25 Jakarta | 2023/04/12 01:55 | Justin Barki v Kazuki Nishiwaki | 6-7,2-6 |
| ITF M25 Jakarta | 2023/04/11 04:00 | Kazuki Nishiwaki v Yan Bai | 2-6,7-6,10-6 |
| ITF M25 Jakarta | 2023/04/10 07:35 | Kazuki Nishiwaki v Ha Minh Duc Vu | 6-1,6-4 |
| ITF M15 Singapore | 2023/04/05 09:00 | Dayne Kelly v Kazuki Nishiwaki | 6-3,6-4 |
| ITF M25 Tsukuba | 2023/03/30 03:35 | Yusuke Takahashi v Kazuki Nishiwaki | 6-2,6-0 |
| ITF M25 Tsukuba | 2023/03/29 00:30 | Kazuki Nishiwaki v Yunseong Chung | 6-2,6-3 |