And on the 19th day of January it came to an end.
Barcelona's hopes of an unbeaten season evaporated in San Sebastian as Real Sociedad stole three points in second half stoppage time.
It had all began so familiarly for La Blaugrana, first Lionel Messi and then Pedro establishing a 2-0 lead at Anoeta.
Gonzalez 'Chori' Castro pulled one back before half-time, his goal giving La Real belief that they could get something from the game.
Their belief was enhanced when Gerard Pique saw red for a second yellow card, almost immediately Castro had them level—his deflected effort deceiving Victor Valdes.
But it was Imanol Agirretxe who had the last say, prodding home a Carlos Martinez cross to ensure Sociedad secured a memorable win.
Here's how the Barca players performed...