Stadium: Cancha 4 Round: 25 Ground: Clay
| Ambato, Ecuador | 2021/09/19 15:00 | Gonzalo Villanueva v Luca Castelnuovo | 6-7,6-7 |
| ITF M25 Lima | 2021/10/06 18:55 | Wilson Leite v Gonzalo Villanueva | 6-3,6-4 |
| Challenger Lima | 2021/09/26 18:20 | Thirouin, Jean v Gonzalo Villanueva | 6-3,1-6,6-1 |
| Ambato, Ecuador | 2021/09/19 15:00 | Gonzalo Villanueva v Luca Castelnuovo | 6-7,6-7 |
| Challenger Quito | 2021/09/14 15:00 | Gonzalo Villanueva v Renzo Olivo | 4-6,4-6 |
| Challenger Tulln | 2021/09/06 08:00 | Neil Oberleitner v Gonzalo Villanueva | 7-5,6-2 |
| Challenger Tulln | 2021/09/05 10:40 | Nejedly, Pavel v Gonzalo Villanueva | 2-6,4-6 |
| ITF M15 Zilina | 2021/09/01 12:25 | Gonzalo Villanueva v Goldsteiner, Peter | 4-6,3-6 |
| ITF M25 Decatur | 2021/08/04 20:30 | Gonzalo Villanueva v Petros Chrysochos | 1-6,3-6 |
| ITF M25 Lima | 2021/10/05 15:00 | Luca Castelnuovo v Boris Arias | 4-6,6-4,3-6 |
| Challenger Lima | 2021/09/26 20:50 | Gomez-Herrera, Carlos v Luca Castelnuovo | 7-5,6-0 |
| Ambato, Ecuador | 2021/09/20 15:00 | Luca Castelnuovo v Zukas, Matias | 3-6,6-7 |
| Ambato, Ecuador | 2021/09/19 15:00 | Gonzalo Villanueva v Luca Castelnuovo | 6-7,6-7 |
| Challenger Quito | 2021/09/14 19:35 | Gonzalez, Alejandro v Luca Castelnuovo | 6-2,7-6 |
| Challenger Quito | 2021/09/13 16:20 | Luca Castelnuovo v Minda, Hugo | 6-4,6-3 |
| ITF M25 Sierre | 2021/09/03 10:00 | Rinky Hijikata v Luca Castelnuovo | 6-3,3-6,7-5 |
| ITF M25 Sierre | 2021/09/02 07:55 | Luca Castelnuovo v Moez Echargui | 7-6,7-6 |