Stadium: Stadium Round: 27 Ground: Hardcourt outdoor
| ITF M15 Champaign | 2021/06/23 15:00 | Jason Kubler v Nathan Ponwith | 7-5,6-1 |
| ITF M15 Champaign | 2021/06/22 15:00 | Nathan Ponwith v Michael Zheng | 6-3,6-1 |
| ITF M15 Champaign | 2021/06/21 15:00 | Nathan Ponwith v Hunter Heck | 6-1,6-3 |
| ITF M25 Tulsa | 2021/06/16 14:00 | Nathan Ponwith v Sam Riffice | 5-7,4-6 |
| ITF M25 Tulsa | 2021/06/15 16:30 | Nathan Ponwith v Axel Nefve | 6-4,6-4 |
| ITF M25 Tulsa | 2021/06/14 18:00 | Nathan Ponwith v Joshua Sheehy | 6-3,6-4 |
| ITF M15 Fayetteville | 2020/11/03 19:00 | Nathan Ponwith v Brandon Holt | 2-6,4-6 |
| ITF M25 Orlando | 2019/11/12 19:00 | Adam Moundir v Nathan Ponwith | 4-6,7-6,6-4 |
| UK Pro League | 2021/07/18 10:00 | Max Basing v Lui Maxted | 6-3,6-4 |
| UK Pro League | 2021/07/17 10:00 | Julian Cash v Max Basing | 7-6,6-3 |
| UK Pro League | 2021/07/15 17:55 | Max Basing v Sean Hodkin | 6-4,6-2 |
| UK Pro League | 2021/07/14 14:30 | Llewelyn Bevan v Max Basing | 3-6,1-6 |
| ITF M15 Antalya | 2021/02/22 07:00 | Max Basing v Filip Misolic | 2-6,4-6 |
| ITF M15 Antalya | 2021/02/14 06:00 | Max Basing v Aleksandr Braynin | 6-3,5-7,5-10 |
| ITF M15 Antalya | 2021/02/07 06:00 | Luis Patino v Max Basing | 6-4,7-6 |
| ITF M15 Manacor | 2021/01/13 10:35 | Max Basing v Daniel Rincon | 6-4,3-6,4-6 |