| UTR Pro Tennis Series Florida | 2021/08/16 17:30 | Theo Winegar v Michael Nicholls | 7-5,5-2 |
| UTR Pro Tennis Series Florida | 2021/08/16 17:30 | William Mroz Mroz v Matthew Segura | 4-6,7-5,3-5 |
| UTR Pro Tennis Series Atlanta | 2021/07/16 15:30 | William Mroz Mroz v Chen Dong | 2-6,2-6 |
| UTR Pro Tennis Series Atlanta | 2021/07/15 18:00 | William Mroz Mroz v Gonzalo Villanueva | 3-6,4-5 |
| UTR Pro Tennis Series Atlanta | 2021/07/14 19:30 | William Mroz Mroz v Vazha Shubladze | 6-2,5-1 |
| UTR Pro Tennis Series Atlanta | 2021/07/11 20:45 | Ivan Yatsuk v William Mroz Mroz | 3-6,7-6,4-5 |
| UTR Pro Tennis Series Florida | 2021/06/06 16:00 | Jonah Braswell v William Mroz Mroz | 4-6,6-2,6-6 |
| UTR Pro Tennis Series Florida | 2021/06/05 18:00 | Top Nidunjianzan v William Mroz Mroz | 2-6,4-5 |
| UTR Pro Tennis Series Florida | 2021/06/04 13:30 | Keshav Chopra v William Mroz Mroz | 6-7,6-2,7-6 |