Stadium: Court 3 Round: 25 Ground: Clay
| Challenger Ambato | 2021/09/24 17:40 | Johan Nikles v Juan Pablo Ficovich | 6-0,6-7,5-7 |
| Challenger Ambato | 2021/09/22 18:40 | Pedro Sakamoto v Johan Nikles | 3-6,4-6 |
| Challenger Ambato | 2021/09/21 17:40 | Pol Martin Tiffon v Johan Nikles | 5-7,6-7 |
| Challenger Quito | 2021/09/14 15:00 | Johan Nikles v Alexis Gautier | 0-6,4-6 |
| ITF M25 Oviedo | 2021/09/02 10:20 | Johan Nikles v Alvaro Lopez San Martin | 6-7,6-4,5-7 |
| ITF M25 Oviedo | 2021/09/01 14:20 | Johan Nikles v Julio Cesar Porras | 7-5,6-4 |
| ITF M25 Oviedo | 2021/08/31 10:00 | Johan Nikles v Federico Zeballos | 7-6,6-2 |
| Challenger Warsaw | 2021/08/25 10:30 | Johan Nikles v Jozef Kovalik | 3-6,4-6 |
| 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 M25 Sierre | 2021/09/02 07:55 | Luca Castelnuovo v Moez Echargui | 7-6,7-6 |
| ITF M25 Sierre | 2021/08/31 16:30 | Luca Castelnuovo v Gian Luca Tanner | 7-5,6-3 |
| ITF M25 Muttenz | 2021/08/19 10:35 | Luca Castelnuovo v Oscar Jose Gutierrez | 1-6,2-6 |