Stadium: Court 3 Round: 14 Ground: Clay
| Challenger Madrid | 2023/04/11 08:45 | Miguel Damas v Nikolas Sanchez Izquierdo | 6-4,6-4 |
| Challenger Madrid | 2023/04/10 09:00 | Javier Barranco Cosano v Nikolas Sanchez Izquierdo | 6-3,6-7,2-6 |
| Challenger Madrid | 2023/04/09 14:55 | Rafael Jodar v Nikolas Sanchez Izquierdo | 1-6,0-6 |
| ITF M25 Reus | 2023/04/07 10:45 | Alejandro Manzanera Pertusa v Nikolas Sanchez Izquierdo | 7-5,1-6,6-1 |
| ITF M25 Reus | 2023/04/06 16:25 | Sergi Perez Contri v Nikolas Sanchez Izquierdo | 2-6,7-6,4-6 |
| ITF M25 Reus | 2023/04/05 12:35 | Liam Gavrielides v Nikolas Sanchez Izquierdo | 2-6,4-6 |
| Challenger Girona | 2023/03/26 10:00 | Nikolas Sanchez Izquierdo v Steven Diez | 3-6,4-6 |
| Challenger Las Franquesas del Valles | 2023/03/21 15:00 | Nikolas Sanchez Izquierdo v Hugo Grenier | 4-6,4-6 |
| ITF M25 Trento | 2023/03/30 10:25 | Anton Matusevich v Sandro Kopp | 3-6,7-6,6-2 |
| ITF M25 Trento | 2023/03/29 17:05 | Daniil Glinka v Sandro Kopp | 6-7,3-6 |
| ITF M25 Montreal | 2023/03/16 13:55 | Tibo Colson v Sandro Kopp | 6-3,6-4 |
| ITF M25 Montreal | 2023/03/10 15:30 | Ben Jones v Sandro Kopp | 6-7,7-5,6-2 |
| ITF M25 Montreal | 2023/03/09 15:00 | Sebastian Gima v Sandro Kopp | 6-1,4-6,3-6 |
| ITF M25 Montreal | 2023/03/08 19:30 | Drew Van Orderlain v Sandro Kopp | 1-6,3-6 |
| ITF M15 Oberhaching | 2023/02/16 14:35 | Sandro Kopp v Luca Wiedenmann | 3-6,3-6 |
| ITF M15 Oberhaching | 2023/02/14 12:55 | Sandro Kopp v Sebastian Prechtel | 6-3,6-4 |