Robert Lewandowski and Sergi Roberto's goals helped Barcelona beat Cadiz 2-0 and restore their eight-point lead at the top of La Liga on Sunday.
Elsewhere Antoine Griezmann's superb strike helped Atletico Madrid earn a 1-0 win over Athletic Bilbao to tighten their grip on fourth place.
Champions Real Madrid's win at Osasuna on Saturday pulled them closer to Xavi Hernandez's Barca, who had one eye on Thursday's Europa League play-off second leg against Manchester United at Old Trafford.
However an inspired Ferran Torres helped Sergi Roberto to break the deadlock and Lewandowski added a second to leave Cadiz, 17th, two points above the relegation zone.
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