| UTR Pro Tennis Series Florida | 2021/09/14 12:00 | Joseph Phillips v Yaron Guberman | 6-2,5-2 |
| UTR Pro Tennis Series Florida | 2021/09/13 15:00 | Joseph Phillips v Timothy Phung | 2-6,6-4,5-3 |
| UTR Pro Tennis Series Florida | 2021/09/14 15:00 | Timothy Phung v Charles Sullivan | 4-6,6-3,6-6 |
| UTR Pro Tennis Series Cancun | 2021/04/03 17:00 | Mateo Gomez v Charles Sullivan | 3-2 |
| UTR Pro Tennis Series Cancun | 2021/04/01 18:30 | Charles Sullivan v Juan A H Serrano | 6-7,4-5 |
| UTR Pro Tennis Series Cancun | 2021/03/31 19:00 | Charles Sullivan v Zachery Foster | 6-1,3-6,6-6 |
| UTR Pro Tennis Series Cancun | 2021/03/30 13:00 | Charles Sullivan v Dusty H. Boyer | 5-7,5-7 |
| UTR Pro Tennis Series Cancun | 2021/03/29 16:30 | Charles Sullivan v Gabriel Evans | 6-4,5-2 |
| UTR Pro Tennis Series Florida | 2021/03/11 22:00 | Charles Sullivan v Kiranpal Pannu | 3-6,1-6 |
| UTR Pro Tennis Series Florida | 2021/03/10 18:00 | Charles Sullivan v Benjamin Dhoe | 6-1,6-7,1-6 |