After winning the last four La Liga games including an iconic 4-0 win against Real Madrid, Hansi Flick's FC Barcelona will face Real Sociedad on Sunday for another key game in the Spanish league race.

With Real Madrid trailing La Liga leaders Barcelona by nine points, Saturday's game against Osasuna becomes something of a must win for Carlo Ancelotti's side as they look to keep their title defense on track.

Sheraldo Becker proved to be the match-winner as his 33rd-minute goal ended up being decisive for Real Sociedad in a stunning victory over Barcelona in La Liga.