| UTR Pro Tennis Series Dallas | 2021/08/06 14:30 | Elijah Poritzky v Mac Kiger | 3-6,5-7 |
| UTR Pro Tennis Series Dallas | 2021/08/05 17:30 | Lawrence Sciglitano v Mac Kiger | 0-0 |
| UTR Pro Tennis Series Dallas | 2021/08/04 16:00 | Eric Hadigian v Mac Kiger | 5-7,6-4,5-7 |
| UTR Pro Tennis Series Dallas | 2021/08/02 19:00 | Jackson Allen v Mac Kiger | 4-6,6-2,6-7 |
| UTR Pro Tennis Series Atlanta | 2021/07/07 16:30 | Mac Kiger v Donald Young | 7-6,2-6,0-5 |
| UTR Pro Tennis Series Atlanta | 2021/07/06 12:00 | Mac Kiger v Juan Pablo Cenoz | 1-6,2-6 |
| UTR Pro Tennis Series Atlanta | 2021/07/05 12:00 | Mac Kiger v Andrew Rogers | 7-6,4-6,1-6 |
| UTR Pro Tennis Series Nevada | 2021/07/03 16:30 | Eric Hadigian v Mac Kiger | 0-0 |
| 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 |
| ITF M15 St Petersburg | 2021/01/31 10:10 | Leonid Sheyngezikht v A.J Catanzariti | 6-2,6-2 |