Roundup: Barca go top after beating Real Sociedad after Atletico's big derby win

MADRID, Sept. 28 (Xinhua) -- FC Barcelona went to the top of La Liga after the seventh round of games after Lamine Yamal came off the bench to set up the winning goal in a 2-1 triumph at home to Real Sociedad.

Barca coach Hansi Flick handed a first start to 17-year-old Dro in attacking midfield, while Dani Olmo and Ferran Torres were on the subs' bench.

Barca controlled nearly all of the ball, but were un