Stadium: Court 3 Round: 19 Ground: Clay
| Challenger Ambato | 2021/09/19 15:00 | Gonzalo Villanueva v Luca Castelnuovo | 6-7,6-7 |
| Challenger Quito | 2021/09/14 19:35 | Alejandro Gonzalez v Luca Castelnuovo | 6-2,7-6 |
| Challenger Quito | 2021/09/13 16:20 | Luca Castelnuovo v Hugo Minda | 6-4,6-3 |
| ITF - Sierre M25 | 2021/09/03 10:00 | Rinky Hijikata v Luca Castelnuovo | 6-3,3-6,7-5 |
| ITF - Sierre M25 | 2021/09/02 07:55 | Luca Castelnuovo v Moez Echargui | 7-6,7-6 |
| ITF - Sierre M25 | 2021/08/31 16:30 | Luca Castelnuovo v Gian Luca Tanner | 7-5,6-3 |
| ITF - Muttenz M25 | 2021/08/19 10:35 | Luca Castelnuovo v Oscar Jose Gutierrez | 1-6,2-6 |
| ITF - Muttenz M25 | 2021/08/18 12:50 | Gabriele Moghini v Luca Castelnuovo | 6-7,1-6 |
| Challenger Ambato | 2021/09/19 17:00 | Matias Zukas v Matias Franco Descotte | 6-4,7-6 |
| Challenger Quito | 2021/09/13 16:05 | Matias Zukas v Cristian Rodriguez | 7-6,5-7,6-7 |
| UTR Pro Tennis Series - Sofia | 2021/09/03 08:30 | Yurii Dzhavakian v Matias Zukas | 6-4,6-4 |
| UTR Pro Tennis Series - Sofia | 2021/09/02 08:30 | Josh Sheehy v Matias Zukas | 3-6,4-6 |
| UTR Pro Tennis Series - Sofia | 2021/09/01 11:00 | Martin Dimitrov v Matias Zukas | 0-6,2-5 |
| UTR Pro Tennis Series - Sofia | 2021/08/31 06:30 | Samuil Konov v Matias Zukas | 3-6,1-6 |
| UTR Pro Tennis Series - Sofia | 2021/08/30 11:15 | Matias Zukas v Ivan Penev | 7-5,6-3 |
| ITF - Poznań M25 | 2021/08/28 09:30 | Roman Andres Burruchaga v Matias Zukas | 6-1,6-4 |