| ITF M15 Nules | 2021/11/17 12:00 | John Echeverria v Lorenzo Bocchi | 4-6,6-4,3-6 |
| ITF M15 Torello | 2021/11/07 10:00 | John Echeverria v Marco Brugnerotto | 7-6,6-4 |
| ITF M15 Torello | 2021/11/06 11:30 | John Echeverria v Lilian Marmousez | 6-3,1-6,6-1 |
| ITF M15 Torello | 2021/11/05 10:00 | Benjamin Lock v John Echeverria | 4-6,5-7 |
| ITF M15 Torello | 2021/11/04 09:30 | John Echeverria v Coleman Wong | 6-3,5-7,6-2 |
| ITF M15 Torello | 2021/11/02 11:00 | John Echeverria v Florent Bax | 7-6,5-7,7-6 |
| ITF M25 Toulouse | 2021/10/20 08:00 | Axel Garcian v John Echeverria | 6-4,6-2 |
| ITF M25 Toulouse | 2021/10/19 10:05 | John Echeverria v Hugo Voljacques | 7-6,6-3 |
| UTR Pro Tennis Series - Barcelona | 2021/12/11 14:00 | Stefanos Sakellaridis v Alexis Klegou | 3-6,4-6 |
| UTR Pro Tennis Series - Barcelona | 2021/12/10 08:00 | Ilya Snitari v Stefanos Sakellaridis | 6-4,6-3 |
| UTR Pro Tennis Series - Barcelona | 2021/12/09 09:30 | Sergio Redondo v Stefanos Sakellaridis | 3-6,2-5 |
| UTR Pro Tennis Series - Barcelona | 2021/12/08 10:30 | Yanais Laurent v Stefanos Sakellaridis | 6-4,5-7,5-4 |
| UTR Pro Tennis Series - Barcelona | 2021/12/06 10:00 | Ignasi De Rueda De Genover v Stefanos Sakellaridis | 4-6,6-7 |
| UTR Pro Tennis Series - Barcelona | 2021/11/28 11:00 | Sergio Redondo v Stefanos Sakellaridis | 6-0,6-3 |
| UTR Pro Tennis Series - Barcelona | 2021/11/27 12:30 | Jay Friend v Stefanos Sakellaridis | 7-6,6-7,4-5 |
| UTR Pro Tennis Series - Barcelona | 2021/11/26 13:00 | David Redondo v Stefanos Sakellaridis | 7-6,4-6,5-7 |