Stadium: Campo 5 Round: 14 Ground: Clay
| ITF M25 Lima | 2021/10/12 15:00 | Gonzalo Villanueva v Luca Castelnuovo | 4-6,6-4,6-4 |
| 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 | Carlos Gomez-Herrera v Luca Castelnuovo | 7-5,6-0 |
| Challenger Ambato | 2021/09/20 15:00 | Luca Castelnuovo v Matias Zukas | 3-6,6-7 |
| 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 M25 Sierre | 2021/09/03 10:00 | Rinky Hijikata v Luca Castelnuovo | 6-3,3-6,7-5 |
| ITF M15 Cancun | 2021/10/09 15:00 | Juan A H Serrano v Christian Langmo | 6-3,3-6,6-7 |
| ITF M15 Cancun | 2021/10/07 16:25 | Juan A H Serrano v Giles Hussey | 4-6,6-2,6-3 |
| ITF M15 Cancun | 2021/10/06 16:30 | Mwendwa Mbithi v Juan A H Serrano | 3-6,2-6 |
| ITF M15 Cancun | 2021/09/24 15:00 | Federico Agustin Gomez v Juan A H Serrano | 3-6,6-4,7-6 |
| ITF M15 Cancun | 2021/09/23 14:00 | Jesse Flores v Juan A H Serrano | 4-6,4-6 |
| ITF M15 Cancun | 2021/09/22 20:45 | Joshua Sheehy v Juan A H Serrano | 3-6,2-6 |
| ITF M25 Medellin | 2021/09/17 15:00 | Pedro Sakamoto v Juan A H Serrano | 6-3,6-2 |
| ITF M25 Medellin | 2021/09/16 15:00 | Pedro Boscardin Dias v Juan A H Serrano | 3-6,4-6 |