Real Madrid defeated fourth-tier underdogs Deportivo Minera 5-0 on Monday, cruising to the Copa del Rey final 16.
In the first half, the strong Spanish champions were led by goals by Arda Guler, Eduardo Camavinga, and Federico Valverde.
Guler punched in his second goal to complete the thrashing, and veteran Luka Modric scored the fourth.
Coach Carlo Ancelotti rested several key players ahead of the Spanish Super Cup starting in Saudi Arabia later this week, with Kylian Mbappe and Vinicius Junior only appearing as second-half substitutes.
Valverde volleyed home at the back post early on to help Madrid take control and Camavinga doubled the lead after 13 minutes with a header.
Endrick came close to adding a third for Los Blancos before Guler pounced with the aid of a deflection after cutting in from the right.
Brahim Diaz hit the post early in the second half before 39-year-old midfielder Modric notched with a neat curling effort.
Guler finished with ease at the death after Fran Garcia tied him up to cap a fine night for the Turkish playmaker.
On Saturday Barcelona and Atletico Madrid also eased into the next round, while holders Athletic Bilbao scraped through on penalties against third-tier Logrones.
The draw for the next round takes place on Wednesday, with the fixtures due to take place between January 14-16.
