Barcelona were made to work hard against fourth-tier opponents as they booked their place in the last 16 of the Copa del Rey on Sunday with a 3-2 win at Barbastro, while Sevilla, Real Sociedad and Valencia earned narrow victories to progress.

Fermin Lopez opened the scoring for Barca in the 18th minute with a tap-in from a low cross from Raphinha, who then made it 2-0, collecting a fine long ball from young debutant Hector Fort in the 51st minute.

Despite Barcelona looking dominant, Adria de Mesa lifted the spirits of the home crowd when he capitalised on a loose ball in the box to pull one back for Barbastro in the 60th minute.

Barbastro went close to equalising, before substitute Robert Lewandowski made no mistake from the penalty spot to extend Barca’s lead with two minutes to go.

Barbastro’s Marc Prat made it 3-2 in stoppage time also with a penalty, but the hosts could not prevent Xavi Hernandez’s side sealing the win.

Elsewhere, an own goal by Einar Galilea was enough for Real Sociedad to claim a 1-0 away win over Malaga.

La Liga side Las Palmas were beaten 2-0 at second-tier Tenerife with first-half goals from Jose Maria Amo and Luismi Cruz. Villarreal’s clash against Unionistas Salamanca was suspended after power failures at the Reina Sofia stadium.