| UTR Pro Tennis Series California | 2021/07/25 16:30 | Rithvik Krishna v Chase Thompson | 7-5,1-6,7-6 |
| UTR Pro Tennis Series California | 2021/07/27 16:30 | Tristan Boyer v Quinn Vandecasteele | 2-6,6-2,6-4 |
| UTR Pro Tennis Series California | 2021/07/26 16:30 | Stefan Leustian v Quinn Vandecasteele | 5-7,4-5 |
| UTR Pro Tennis Series California | 2021/07/25 18:12 | Quinn Vandecasteele v Jett Middleton | 6-1,6-6 |
| UTR Pro Tennis Series California | 2021/07/23 18:00 | Alessandro-D Ventre v Quinn Vandecasteele | 6-1,5-2 |
| UTR Pro Tennis Series California | 2021/07/20 16:30 | Spencer Johnson v Quinn Vandecasteele | 2-6,6-7 |
| UTR Pro Tennis Series California | 2021/07/19 21:30 | Samuel Rubell v Quinn Vandecasteele | 5-7,7-6,1-6 |
| UTR Pro Tennis Series California | 2021/07/18 20:15 | Quinn Vandecasteele v Nathan Han | 6-2,5-1 |
| UTR Pro Tennis Series Nevada | 2021/07/04 15:00 | Eric Hadigian v Quinn Vandecasteele | 3-6,4-6 |