| 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 Rodriguez, J. A. | 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 구베르만, 야론 | 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 Schmid, Michal | 3-6,2-6 |
| UTR Pro Tennis Series Manzanillo | 2021/12/08 15:00 | Luis Pineda v Mario Radev | 6-1,5-3 |
| UTR Pro Tennis Series Manzanillo | 2021/12/06 14:00 | Rodriguez, J. A. v Mario Radev | 6-1,6-1 |
| UTR Pro Tennis Series Zadar | 2021/11/18 15:30 | 페케트, 자노스 v Mario Radev | 6-0,5-2 |
| UTR Pro Tennis Series Zadar | 2021/11/16 16:00 | Brkic, Jerko v Mario Radev | 6-3,6-1 |
| UTR Pro Tennis Series Zadar | 2021/11/15 10:30 | Eduard Shcherbyna v Mario Radev | 6-1,6-3 |
| UTR Pro Tennis Series Zadar | 2021/11/14 10:00 | Mario Radev v Ante P Ercegovic | 7-5,5-2 |
| UTR Pro Tennis Series Sofia | 2021/09/01 08:00 | 케시디스, 크리스토스 v Mario Radev | 6-1,4-6,6-4 |
| UTR Pro Tennis Series Sofia | 2021/08/31 08:00 | 프로다노브, 데니슬라브 v Mario Radev | 6-1,1-6,6-3 |