Stadium: Court 16 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Ithaca | 2023/01/17 18:30 | Nathan Ponwith v Collin Altamirano | 6-4,6-1 |
| ITF M15 San Diego | 2024/05/29 19:25 | Collin Altamirano v Maxwell McKennon | 6-3,6-3 |
| UTR Pro Newport Beach | 2024/05/25 19:45 | Lui Maxted v Collin Altamirano | 7-5,2-6,6-1 |
| UTR Pro Newport Beach | 2024/05/24 23:45 | Collin Altamirano v Yassine Smiej | 3-6,6-1,6-2 |
| UTR Pro Newport Beach | 2024/05/23 19:30 | Collin Altamirano v Hiroki Sakagawa | 6-4,4-6,5-3 |
| UTR Pro Newport Beach | 2024/05/22 19:30 | Alex Knaff v Collin Altamirano | 5-7,7-6,4-6 |
| UTR Pro Newport Beach | 2024/05/21 18:00 | Alessandro-D Ventre v Collin Altamirano | 5-7,4-6 |
| ITF M25 Anapoima | 2024/04/30 16:30 | Collin Altamirano v Alberto Odiseo Alvarado Berrospi | 6-2,6-2 |
| ITF M25 Mosquera | 2024/04/23 16:55 | Collin Altamirano v Ivan Denisov | 4-6,6-3,4-6 |
| ITF M25 Pensacola | 2024/05/17 15:00 | Bruno Kuzuhara v Nathan Ponwith | 6-3,6-3 |
| ITF M25 Pensacola | 2024/05/16 16:30 | Nathan Ponwith v Aidan Mchugh | 7-5,6-3 |
| ITF M25 Pensacola | 2024/05/15 18:05 | Nathan Ponwith v Maxwell Benson | 6-0,6-3 |
| ITF M15 Orange Park | 2024/05/01 18:45 | Arvid Nordquist v Nathan Ponwith | 6-3,6-3 |
| ITF M15 Vero Beach | 2024/04/24 15:00 | Nathan Ponwith v Rudy Quan | 0-6,6-7 |
| Challenger Acapulco | 2024/04/16 23:25 | Maxime Cressy v Nathan Ponwith | 6-4,6-0 |
| Challenger Acapulco | 2024/04/16 00:50 | Nick Chappell v Nathan Ponwith | 6-2,6-7,2-6 |
| Challenger Acapulco | 2024/04/15 01:25 | Nathan Ponwith v Elmar Ejupovic | 7-6,6-3 |