Stadium: Stadium Round: 25 Ground: Hardcourt outdoor
| Challenger - Leon | 2023/04/10 18:00 | Christian Langmo v Nathan Ponwith | 7-6,6-3 |
| ITF - M25 Wesley Chapel | 2023/01/29 15:00 | Christian Langmo v Nathan Ponwith | 3-6,2-6 |
| ITF M25 Edwardsville | 2019/08/08 16:20 | Nathan Ponwith v Christian Langmo | 7-5,5-7,6-4 |
| ITF - M25 Pensacola | 2023/05/19 15:00 | Sekou Bangoura v Nathan Ponwith | 6-4,6-1 |
| ITF - M25 Pensacola | 2023/05/18 17:15 | Ryan Fishback v Nathan Ponwith | 2-6,5-7 |
| ITF - M25 Pensacola | 2023/05/17 16:10 | Ryan Haviland v Nathan Ponwith | 1-6,3-6 |
| Challenger - Savannah | 2023/04/23 21:10 | Nathan Ponwith v Cooper Williams | 6-7,4-6 |
| Challenger - Morelos | 2023/04/16 17:45 | Nathan Ponwith v Alan F R Fierros | 6-7,2-6 |
| Challenger - Leon | 2023/04/10 18:00 | Christian Langmo v Nathan Ponwith | 7-6,6-3 |
| Challenger - Leon | 2023/04/09 21:20 | Diego Andrade v Nathan Ponwith | 2-6,1-6 |
| ITF M25 - Calabasas | 2023/03/26 19:30 | Alex Michelsen v Nathan Ponwith | 3-6,7-6,5-7 |
| Challenger - Little Rock | 2023/05/29 16:20 | Christian Langmo v Bernard Tomic | 7-6,2-6,6-0 |
| Challenger - Little Rock | 2023/05/28 17:00 | Christian Langmo v Gustavo Heide | 6-2,4-6,6-3 |
| Challenger - Oeiras | 2023/05/14 09:00 | Christian Langmo v Mate Valkusz | 2-6,2-6 |
| Challenger - Francavilla | 2023/05/07 13:20 | Christian Langmo v Alex Barrena | 4-6,4-6 |
| Challenger - Morelos | 2023/04/22 22:00 | James Duckworth v Christian Langmo | 6-3,7-5 |
| Challenger - Morelos | 2023/04/21 18:00 | Christian Langmo v Antoine Escoffier | 6-4,5-7,7-5 |
| Challenger - Morelos | 2023/04/20 19:55 | Maximilian Neuchrist v Christian Langmo | 6-3,6-7,3-6 |
| Challenger - Morelos | 2023/04/18 16:30 | Christian Langmo v Joao Lucas Reis da Silva | 7-6,6-2 |