| Challenger Heilbronn | 06/06 10:00 | 26 | [258] Nikolas Sanchez Izquierdo v Ivan Gakhov [267] | 3-6,1-6 | |
| Challenger Heilbronn | 06/04 09:30 | 25 | [258] Nikolas Sanchez Izquierdo v Daniel Dutra Da Silva [385] | 7-6,6-2 | |
| ATP Lyon | 05/20 09:00 | 25 | [260] Nikolas Sanchez Izquierdo v Tomas Martin Etcheverry [29] | 6-1,2-6,2-6 | |
| ATP Lyon | 05/19 10:30 | 19 | [261] Nikolas Sanchez Izquierdo v Javier Barranco Cosano [259] | 6-1,6-3 | |
| ATP Lyon | 05/18 14:00 | 14 | [88] Constant Lestienne v Nikolas Sanchez Izquierdo [261] | 6-3,1-6,6-7 | |
| ITF M25 Vic | 05/15 08:55 | 25 | [261] Nikolas Sanchez Izquierdo v Michiel de Krom [461] | 3-6,7-6,5-7 | |
| Challenger Prague | 05/08 13:05 | 25 | [261] Nikolas Sanchez Izquierdo v Rudolf Molleker [166] | 3-6,1-6 | |
| ITF M25 Sabadell | 05/05 09:00 | 29 | Miguel Damas v Nikolas Sanchez Izquierdo | 4-6,6-4,3-6 | |
| ITF M25 Sabadell | 05/04 09:30 | 28 | [264] Nikolas Sanchez Izquierdo v Daniel Rincon [216] | 6-4,6-0 | |
| ITF M25 Sabadell | 05/03 11:45 | 27 | [314] Nicholas David Ionel v Nikolas Sanchez Izquierdo [264] | 6-3,3-6,0-6 | |
| ITF M25 Sabadell | 05/02 11:05 | 26 | Evgeny Karlovskiy v Nikolas Sanchez Izquierdo | 7-6,1-6,1-6 | |
| ITF M25 Sabadell | 05/01 10:15 | 25 | Oliver Bonding v Nikolas Sanchez Izquierdo | 3-6,1-6 |
Nikolás Sánchez Izquierdo (born 17 March 1999) is a Spanish tennis player. He has a career high ATP singles ranking of world No. 238 achieved on 19 September 2022 and a doubles ranking of No. 562 achieved on 29 November 2021.
Sánchez Izquierdo made his debut on the ATP Tour as a qualifier at the 2024 ATP Lyon Open, losing to sixth seed Tomás Martín Etcheverry in the first round.