As Barcelona defeated Mallorca on the road, Robert Lewandowski scored once more to help his team move to the top of La Liga.
With a low, curving finish into the bottom corner, Lewandowski scored his ninth league goal in seven games since joining from Bayern Munich in the summer.
Goalkeeper Marc-Andre ter Stegen made an outstanding stop to prevent Mallorca from tying the score.
As Barcelona won, Ter Stegen also made excellent saves from Antonio Sanchez and Lee Kang-in.
With six wins and one tie in seven games, Barca is currently first in La Liga.
Victory lifts them over Real Madrid, who have a perfect record after six games and will return to the top if they beat Osasuna at home on Sunday.
Lewandowski had the chance to score again after scoring, but Predrag Rajkovic, the goalie for the home team, stopped his attempted lob.
Barcelona’s crucial Champions League encounter against Inter Milan will take place in Italy on Tuesday. Both teams entered the league with one victory and one defeat.