Stadium: Court 5 Round: 25 Ground: Hardcourt outdoor
| ITF - M25 Calabasas | 2021/10/30 21:00 | Rinky Hijikata v Nathan Ponwith | 6-2,6-3 |
| ITF - M25 Calabasas | 2021/10/29 18:00 | Nathan Ponwith v Max Basing | 6-4,6-4 |
| ITF - M25 Calabasas | 2021/10/28 19:50 | Connor Farren v Nathan Ponwith | 7-6,0-6,5-7 |
| ITF - M25 Calabasas | 2021/10/27 00:40 | Nathan Ponwith v Andre Ilagan | 6-3,6-3 |
| ITF - M15 Ithaca | 2021/10/07 16:05 | A.J Catanzariti v Nathan Ponwith | 6-4,6-3 |
| ITF - M15 Ithaca | 2021/10/06 15:00 | Evan Bynoe v Nathan Ponwith | 4-6,6-4,1-6 |
| ITF - M15 Lubbock | 2021/09/28 15:00 | Garrett Johns v Nathan Ponwith | 6-3,6-2 |
| ITF - M15 Fayetteville | 2021/09/21 17:00 | Nathan Ponwith v Juncheng Shang | 0-6,6-3,5-7 |
| ITF - M15 Tallahassee | 2021/10/28 16:50 | Ben Shelton v Duarte Vale | 6-3,3-6,6-3 |
| ITF - M15 Tallahassee | 2021/10/27 19:35 | Loris Pourroy v Duarte Vale | 7-5,6-7,3-6 |
| ITF - M15 Vero Beach | 2021/10/22 16:55 | Duarte Vale v Juncheng Shang | 3-6,6-7 |
| ITF - M15 Vero Beach | 2021/10/21 17:00 | Duarte Vale v Diogo Marques | 6-3,6-3 |
| ITF - M15 Vero Beach | 2021/10/20 20:55 | Duarte Vale v Toby Martin | 5-7,6-2,6-2 |
| ITF - M15 Naples | 2021/10/17 14:25 | Duarte Vale v Juncheng Shang | 3-6,6-7 |
| ITF - M15 Naples | 2021/10/16 13:30 | Blu Baker v Duarte Vale | 6-7,3-6 |
| ITF - M15 Naples | 2021/10/15 13:25 | Johannes Ingildsen v Duarte Vale | 4-6,3-6 |