Barcelona bemoans 'big mistake' in Real Sociedad defeat

BARCELONA — La Liga leader Barcelona fell to a 1-0 defeat at Real Sociedad on Sunday after a Robert Lewandowski goal was controversially disallowed, which coach Hansi Flick labeled a "big mistake".

Earlier Julian Alvarez earned Atletico Madrid a 1-0 win at Mallorca to take the Rojiblancos up to third place.

Sheraldo Becker's 33rd-minute goal consigned Barcelona to its second league defeat of the season, leaving the Catalan giant six points clear of second-placed Real Madrid, having played an extra match.