| UTR Pro Tennis Series Zadar | 2021/11/19 10:30 | Janos Fekete v Graham Maassen | 6-3,5-3 |
| UTR Pro Tennis Series Zadar | 2021/11/18 10:30 | Jose A R Rodriguez v Graham Maassen | 4-6,6-2,6-2 |
| UTR Pro Tennis Series Zadar | 2021/11/16 13:00 | Deni Zmak v Graham Maassen | 4-6,6-1,6-2 |
| UTR Pro Tennis Series Zadar | 2021/11/14 15:20 | Graham Maassen v Alexander Lazov | 6-2,6-4 |
| UTR Pro Tennis Series Manzanillo | 2021/12/11 18:00 | Emiliano Elizarraras v Santiago Arredondo | 7-6,5-4 |
| UTR Pro Tennis Series Manzanillo | 2021/12/09 22:00 | Santiago Arredondo v Mario Radev | 6-2,4-6,5-2 |
| UTR Pro Tennis Series Manzanillo | 2021/12/08 16:30 | Santiago Arredondo v Javier Alejandro Mendoza Crespo | 4-6,6-3,3-6 |
| UTR Pro Tennis Series Manzanillo | 2021/12/07 16:30 | Santiago Arredondo v Jose Antonio Rodriguez Rodriguez | 2-6,7-5,2-5 |
| UTR Pro Tennis Series Manzanillo | 2021/12/06 14:00 | Santiago Arredondo v Luis Pineda | 6-3,7-6 |
| UTR Pro Tennis Series Florida | 2021/09/19 12:00 | Santiago Arredondo v Yaron Guberman | 7-5,5-3 |
| UTR Pro Tennis Series Florida | 2021/09/18 16:00 | Adam Ambrozy v Santiago Arredondo | 3-6,4-6 |
| UTR Pro Tennis Series Florida | 2021/09/18 13:00 | Santiago Arredondo v Michal Schmid | 3-6,2-6 |