Stadium: Court 4 Round: 26 Ground: Hardcourt indoor
| ITF M15 Ithaca | 2021/10/06 13:00 | Jonathan Sorbo v A.J Catanzariti | 3-6,1-6 |
| ITF M15 Champaign | 2021/09/16 14:55 | A.J Catanzariti v Dali Blanch | 6-7,4-6 |
| ITF M15 Champaign | 2021/09/15 17:05 | Alexander Brown v A.J Catanzariti | 1-6,2-6 |
| UTR Pro Tennis Series Dallas | 2021/08/13 14:30 | Stefan Storch v A.J Catanzariti | 6-4,6-4 |
| UTR Pro Tennis Series Dallas | 2021/08/11 15:30 | A.J Catanzariti v Abhishek Bastola | 6-4,6-1 |
| UTR Pro Tennis Series Dallas | 2021/08/09 21:30 | A.J Catanzariti v Sema Pankin | 6-3,5-2 |
| UTR Pro Tennis Series Dallas | 2021/08/08 16:30 | A.J Catanzariti v Phuc Huynh | 4-6,6-3,6-0 |
| UTR Pro Tennis Series Dallas | 2021/08/07 17:30 | Mac Kiger v A.J Catanzariti | 7-5,1-6,5-3 |
| 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 Champaign | 2021/09/17 15:00 | Nathan Ponwith v Martin Damm | 6-7,4-6 |
| ITF M15 Champaign | 2021/09/16 17:00 | Nathan Ponwith v Blaise Bicknell | 6-2,6-4 |
| ITF M15 Champaign | 2021/09/15 19:40 | Ryan Shane v Nathan Ponwith | 5-7,2-6 |
| ITF M25 Decatur | 2021/08/04 18:45 | Yunseong Chung v Nathan Ponwith | 6-2,6-1 |
| ITF M25 Decatur | 2021/08/03 16:20 | Alexander Petrov v Nathan Ponwith | 2-6,4-6 |