Stadium: Cancha Central Round: 14 Ground: Clay
| Challenger Losinj | 2021/10/19 12:00 | Nicolas Alvarez Varona v Nerman Fatic | 5-7,2-6 |
| Challenger Losinj | 2021/10/18 08:00 | Nicolas Alvarez Varona v Fabien Reboul | 6-4,6-4 |
| Challenger Losinj | 2021/10/17 08:00 | Nicolas Alvarez Varona v Ivan Sabanov | 6-2,6-2 |
| Challenger Alicante | 2021/10/12 09:45 | N.Sriram Balaji v Nicolas Alvarez Varona | 5-7,6-4,6-4 |
| Challenger Barcelona | 2021/10/08 09:00 | Hugo Gaston v Nicolas Alvarez Varona | 6-2,6-1 |
| Challenger Barcelona | 2021/10/07 09:00 | Filip Horansky v Nicolas Alvarez Varona | 4-6,3-6 |
| Challenger Barcelona | 2021/10/05 12:10 | Nicolas Alvarez Varona v Jiri Lehecka | 6-2,7-6 |
| Challenger Barcelona | 2021/10/04 13:00 | Denis Yevseyev v Nicolas Alvarez Varona | 6-3,2-6,1-6 |
| ITF M25 Guayaquil | 2021/10/27 16:15 | Daniel Dutra Da Silva v Francisco Castro | 6-1,6-0 |
| ITF M25 Guayaquil | 2021/10/25 15:55 | Francisco Castro v Fernando Soto | 6-2,6-0 |
| ITF M25 Guayaquil | 2021/10/24 16:00 | Francisco Castro v Hugo Minda | 6-0,6-7,10-2 |