What do Pep Guardiola, Tito Vilanova, Tata Martino and Luis Enrique have in common? They all lost at Real Sociedad's Anoeta stadium - despite all being heavy favorites.
It doesn't seem to matter what kind of form La Real are in either. They just somehow keep getting good results.
This as Barcelona travel to the Basque Country for an important league match against La Real. Barcelona have dropped five points in their past two games, and their league advantage might start to look perilously small if they were to lose again.