| UTR Pro Tennis Series New York | 2021/12/27 21:30 | Roy Smith v Nicholas Steiglehner | 6-0,6-1 |
| UTR Pro Tennis Series Dallas | 2021/08/08 13:00 | William Grant v Mac Kiger | 6-4,6-5 |
| 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 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 |