Real Sociedad scrapes by Villarreal
Villarreal routed Sociedad 5-1 at its El Madrigal Stadium on Monday, but three days later the Basques secured passage into the last eight following a scoreless first leg.
Javi Ros put Real in command with a valuable away goal in the 32nd minute, stabbing home a loose ball from inside the box after goalkeeper Juan Carlos Sanchez made the initial save on Xabi Prieto.
Real moves on to face third-tier Racing Santander in the knockout competition.
Later Thursday, Barcelona traveled to Getafe holding a 4-0 advantage after the first leg.