Stadium: Court 12 Round: 25 Ground: Clay
| Challenger Bari | 2021/11/23 11:30 | Nikolas Sanchez Izquierdo v Flavio Cobolli | 6-3,2-6,0-6 |
| Challenger Pau | 2021/11/15 10:00 | Nikolas Sanchez Izquierdo v Georgii Kravchenko | 1-6,2-6 |
| Challenger Pau | 2021/11/14 11:15 | Nikolas Sanchez Izquierdo v Piotr Matuszewski | 6-2,6-1 |
| Challenger Buenos Aires | 2021/10/19 15:40 | Juan Pablo Ficovich v Nikolas Sanchez Izquierdo | 7-6,7-6 |
| Challenger Barcelona | 2021/10/05 13:35 | Nikolas Sanchez Izquierdo v Teymuraz Gabashvili | 5-7,2-6 |
| Challenger Murcia | 2021/09/28 10:50 | Nikolas Sanchez Izquierdo v Tallon Griekspoor | 3-6,1-6 |
| Challenger Braga | 2021/09/25 13:30 | Nikola Milojevic v Nikolas Sanchez Izquierdo | 6-2,6-4 |
| Challenger Braga | 2021/09/25 10:00 | Nikolas Sanchez Izquierdo v Taro Daniel | 6-3,6-2 |
| Challenger Antalya | 2021/11/29 11:05 | Oliver Crawford v Vladyslav Orlov | 6-3,6-4 |
| Challenger Antalya | 2021/11/29 07:00 | Oliver Crawford v Sarp Agabigun | 6-3,6-0 |
| ITF M15 Antalya | 2021/11/18 08:00 | Oliver Crawford v Bogdan Ionut Apostol | 4-6,4-6 |
| ITF M15 Antalya | 2021/11/16 11:30 | Oliver Crawford v Hamad Medjedovic | 6-4,7-6 |
| Challenger Guayaquil | 2021/10/31 21:00 | Oliver Crawford v Daniel Dutra Da Silva | 4-6,3-6 |
| ITF M25 Guayaquil | 2021/10/29 15:00 | Oliver Crawford v Murkel Dellien | 6-3,6-4 |
| ITF M25 Guayaquil | 2021/10/28 15:00 | Oliver Crawford v Alvaro Guillen Meza | 6-3,6-2 |
| ITF M25 Guayaquil | 2021/10/26 15:00 | Oliver Crawford v Camilo Benavides Soto | 6-0,6-0 |