Real Sociedad completely outplayed the leaders in San Sebastian, handing Barcelona their second La Liga loss of the year. Real Sociedad had several chances to extend the advantage, but Sheraldo Becker's goal in the first half—taken superbly after latching on to a flick-on—was the difference.

Becker, Mikel Oyarzabal, and substitute Ander Barrenetxea all squandered golden chances to make it 2-0, and the expected Barca pressure never materialised. Not a single shot was ever on target. Barcelona never seemed in rhythm and was missing the injured Lamine Yamal. Even their greatest moment, a goal by Robert Lewandowski that was controversially disallowed by VAR for offside, was tenacious and came after a lucky bounce. Barcelona's lead has been reduced to six points as a result of the loss, and Real Madrid is still in the game. Sociedad's second home win of the season moves them up to ninth place.