Gerard Pique and Carles Alena were on target to help a below-par Barcelona to a 2-0 win over Villarreal and send them top of LaLiga.

The Catalan giants leapfrog Sevilla to the summit but Pablo Machin's side will reclaim top spot if they beat Alaves in Sunday's late game.

Barca – who had taken just one point from their previous two league games – were far from their best against their lowly opponents and were indebted to Pique's second league goal of the season for a 36th-minute lead.

Ernesto Valverde's were insipid in the second half, but did score a second three minutes from time as substitute Alena latched onto Lionel Messi's pass to clip over Sergio Asenjo for his first LaLiga goal.

Despite Barca's early dominance, Villarreal almost snatched the lead after 13 minutes when Gerard Moreno crashed against the post following sloppy defending from Clement Lenglet.

Ivan Rakitic and Ousmane Dembele came close for the hosts, who finally went ahead nine minutes before the interval when the latter's cross was headed in by Pique from eight yards.

Messi was denied a second soon after when Asenjo pawed away his close-range effort.

Santi Cazorla whipped a free-kick over the crossbar after 69 minutes as the visitors looked to find a way back into the game.

Philippe Coutinho curled a trademark effort narrowly wide before Alena raced clear in the 87th minute to coolly steer over the onrushing Asenjo and add undeserved gloss to the scoreline.

What does it mean? Barcelona do just enough

It was not pretty but, given their last LaLiga home game ended in a shock 4-3 defeat to Real Betis, Valverde will be relieved to have come through this test unscathed. Villarreal, meanwhile, have won just three times in the top flight this season and remain in 17th, a place outside the relegation zone.

Dembele sparkles

The young Frenchman has been in the spotlight for the wrong reasons recently but showed why he is worth the hassle with a bright display. He bamboozled the Villarreal defence with an array of tricks and flicks and teed up Pique's winner with a fine cross.

Coutinho fluffs his lines

With Luis Suarez sidelined through injury, Coutinho was expected to contribute to Barca's goal threat. The Brazilian was entirely overshadowed by Demeble, though, in a performance characterised by poor decision-making.

What's next?

Both sides have home Copa del Rey second legs on Wednesday with Barcelona taking on Cultural Leonesa and Villarreal hosting Almeria.