Stadium: Estadio Mextenis Round: 14 Ground: Hardcourt outdoor
| ITF M25 Calabasas | 2023/03/26 19:30 | Alex Michelsen v Nathan Ponwith | 3-6,7-6,5-7 |
| ITF M25 Calabasas | 2023/03/25 20:00 | Toby Alex Kodat v Nathan Ponwith | 2-6,0-6 |
| ITF M25 Calabasas | 2023/03/24 20:15 | Nathan Ponwith v Andrew Rogers | 6-7,6-4,6-2 |
| ITF M25 Calabasas | 2023/03/24 02:15 | Nathan Ponwith v Hudson Rivera | 6-2,3-6,10-6 |
| ITF M25 Calabasas | 2023/03/23 17:00 | Nathan Ponwith v Cooper Williams | 7-6,7-6 |
| Challenger Phoenix | 2023/03/14 17:00 | Nathan Ponwith v Emilio Nava | 3-6,4-6 |
| Challenger Phoenix | 2023/03/13 17:00 | Yosuke Watanuki v Nathan Ponwith | 6-7,2-6 |
| Challenger Waco | 2023/02/26 21:15 | Nathan Ponwith v Denis Yevseyev | 2-6,3-6 |