| UTR Pro Tennis Series Dallas | 2021/08/07 17:30 | Mac Kiger v A.J Catanzariti | 7-5,1-6,5-3 |
| UTR Pro Tennis Series Dallas | 2021/08/06 13:00 | Abhishek Bastola v A.J Catanzariti | 4-6,1-6 |
| UTR Pro Tennis Series Dallas | 2021/08/05 17:30 | Evan Zhu v A.J Catanzariti | 6-2,3-6,3-6 |
| UTR Pro Tennis Series Dallas | 2021/08/04 13:00 | Matt Kuhar v A.J Catanzariti | 7-5,2-6,0-6 |
| UTR Pro Tennis Series Dallas | 2021/08/02 16:30 | Ryan Ybarra v A.J Catanzariti | 4-6,4-6 |
| ITF M15 St Petersburg | 2021/02/10 11:00 | Andrey Chepelev v A.J Catanzariti | 6-4,6-0 |
| ITF M15 St Petersburg | 2021/02/08 09:15 | Andrew Paulson v A.J Catanzariti | 3-6,4-6 |
| ITF M15 St Petersburg Qual | 2021/02/07 10:40 | Marat Sharipov v A.J Catanzariti | 6-7,5-7 |