| UTR Pro Tennis Series California | 2021/05/22 16:30 | Luis Humberto Lopez v Jackson Allen | 3-6,2-6 |
| UTR Pro Tennis Series California | 2021/05/20 16:30 | Jackson Allen v Sema Pankin | 0-6,6-3,3-5 |
| UTR Pro Tennis Series California | 2021/05/19 18:00 | Jackson Allen v Alexander Sarkissian | 6-7,3-5 |
| UTR Pro Tennis Series California | 2021/05/18 18:00 | Jackson Allen v Ante Pavic | 6-7,4-6 |
| UTR Pro Tennis Series California | 2021/05/17 19:30 | Jackson Allen v Lawee Sherif | 6-4,6-1 |
| 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 Nevada | 2021/07/02 18:00 | Mac Kiger v Joshua Charlton | 6-4,3-6,2-5 |
| UTR Pro Tennis Series Nevada | 2021/07/01 15:00 | Mac Kiger v Alejandro Quiles | 6-1,6-2 |
| UTR Pro Tennis Series Nevada | 2021/06/30 16:30 | Maxwell McKennon v Mac Kiger | 6-4,4-6,5-2 |
| UTR Pro Tennis Series Nevada | 2021/06/29 16:30 | Evan Song v Mac Kiger | 6-1,5-2 |