Another lowly Madrid side, segunda Liga side Rayo Vallecano (pictured celebrating one of their goals), caused a stir last night, upsetting Athletic Bilbao 2-0 to give them every chance of reaching the fifth round of the Copa del Rey.

Galicia's Celta Vigo upset newly-promoted Tenerife with a 2-1 home win, and fellow Segunda Liga team, Hercules, picked up an important 2-1 win over Almería in the fourth round of the cup.

Valencia only managed a 1-0 first leg win over third division CD Alcoyano, giving them but a slim advantage to take to the second leg at La Mestalla.

Deportivo La Coruna overcame Segunda Liga side Real Murcia 1-0 courtesy of an Alberto Lopo goal.

Getafe secured a 2-0 win over Espanyol thanks to second-half goals from Juan Angel Albin and Jaime Gavilan.

Osasuna put themselves in control of their tie with Xerez thanks to a 2-1 away first-leg success.

Málaga earned a 1-1 draw with fellow Primera Liga side Real Zaragoza as Apono's penalty cancelled out Angel Lafita's opener for Zaragoza.