Stadium: Cancha Central Round: 14 Ground: Clay
| Challenger Prague | 2021/08/08 10:00 | Geoffrey Blancaneaux v Nicolas Alvarez Varona | 6-1,6-4 |
| ITF M25 Bolzano | 2021/08/03 07:00 | Andrea Picchione v Nicolas Alvarez Varona | 6-4,6-4 |
| Challenger Pozoblanco | 2021/07/19 16:30 | Filip Cristian Jianu v Nicolas Alvarez Varona | 6-2,6-4 |
| ITF M25 Bakio | 2021/06/29 14:30 | Nicolas Alvarez Varona v Ben Patael | 5-7,6-1,4-6 |
| ITF M25 Alkmaar | 2021/06/27 13:00 | Nicolas Alvarez Varona v Jelle Sels | 1-6,3-6 |
| ITF M25 Alkmaar | 2021/06/26 13:35 | Nicolas Alvarez Varona v Christopher Heyman | 6-4,3-6,7-6 |
| ITF M25 Alkmaar | 2021/06/25 11:30 | Nicolas Alvarez Varona v Marvin Moeller | 6-1,6-4 |
| ITF M25 Alkmaar | 2021/06/24 15:00 | Nicolas Alvarez Varona v Carlos Lopez Montagud | 5-7,6-3,6-2 |