Stadium: Estadio Manolo Santana Round: 14 Ground: Clay
| Challenger Zadar | 2021/03/25 09:30 | Gianluca Mager v Nikolas Sanchez Izquierdo | 1-6,6-4,6-1 |
| Challenger Zadar | 2021/03/23 09:00 | Nikolas Sanchez Izquierdo v Matija Pecotic | 3-6,6-3,6-2 |
| Challenger Zadar | 2021/03/22 11:15 | Nikolas Sanchez Izquierdo v Skander Mansouri | 6-2,6-1 |
| Challenger Zadar | 2021/03/21 13:35 | Nikolas Sanchez Izquierdo v Flavio Cobolli | 6-2,7-6 |
| ITF M15 La Nucia | 2021/03/14 11:00 | Emilio Nava v Nikolas Sanchez Izquierdo | 7-6,7-5 |
| ITF M15 La Nucia | 2021/03/13 10:00 | Nikolas Sanchez Izquierdo v Pablo Llamas Ruiz | 6-4,6-1 |
| ITF M15 La Nucia | 2021/03/12 09:25 | Georgii Kravchenko v Nikolas Sanchez Izquierdo | 4-6,1-6 |
| ITF M15 La Nucia | 2021/03/11 13:00 | Nathan Seateun v Nikolas Sanchez Izquierdo | 2-6,1-6 |
| ITF M25 Vale Do Lobo | 2021/03/08 13:00 | Alejandro Moro Canas v Angel G Melgar | 7-6,3-6,10-4 |
| ITF M25 Vale Do Lobo | 2021/03/07 12:00 | Paulo Knippling v Angel G Melgar | 3-6,2-6 |
| ITF M25 Faro | 2021/02/28 11:00 | Ronan Joncour v Angel G Melgar | 6-1,6-3 |
| ITF M15 Sintra | 2020/09/13 08:30 | Tak Khunn Wang v Angel G Melgar | 6-0,6-2 |
| ITF M15 Sintra | 2020/09/06 11:30 | Angel G Melgar v Dominik Palan | 1-6,1-6 |
| ITF Spain F27 | 2018/09/08 10:30 | Gabriel P Tumasonis v Angel G Melgar | 6-1,6-3 |
| ITF Spain F22 | 2018/08/05 20:00 | Leo Bresson v Angel G Melgar | 6-2,6-3 |
| ITF Spain F22 | 2018/08/04 19:00 | Marcos N Gallardo v Angel G Melgar | 1-6,0-6 |