Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF M15 Fayetteville | 2021/11/03 21:00 | Nathan Ponwith v Duarte Vale | 6-2,3-6,3-6 |
| 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 | 2021/11/05 15:00 | Henry Patten v Bruno Kuzuhara | 6-4,6-1 |
| ITF M15 Fayetteville | 2021/11/04 16:45 | Bruno Kuzuhara v Mark Whitehouse | 6-4,6-4 |
| ITF M15 Fayetteville | 2021/11/03 21:10 | Matias Soto v Bruno Kuzuhara | 6-7,2-6 |
| ITF M15 Tallahassee | 2021/10/28 14:00 | Bruno Kuzuhara v Henry Patten | 3-6,6-7 |
| ITF M15 Tallahassee | 2021/10/27 18:50 | Guy Orly Iradukunda v Bruno Kuzuhara | 4-6,7-6,2-6 |
| ITF M15 Vero Beach | 2021/10/20 17:55 | Bruno Kuzuhara v Ben Shelton | 5-7,6-7 |
| ITF M15 Naples | 2021/10/12 15:00 | Bruno Kuzuhara v Juan Ignacio Galarza | 3-6,4-6 |
| ITF M15 Naples | 2021/10/05 14:30 | Bruno Kuzuhara v Liam Draxl | 3-6,4-6 |