Barcelona was the unmovable object. The team that had not yet conceded in the Spanish League. The defense was rock solid. Claudio Bravo was terrific in goal. Lionel Messi and Neymar were playing really well together. Even the midfield passing game looked rejuvenated with Ivan Rakitic, Sergio Busquets and Andres Iniesta working well together.
But then the team came back to earth in a bad way. A 3-1 drubbing at the hands of its worst rivals in a match that could have easily ended 5-1 if not for some poor finishing from Real Madrid's forwards.
So what exactly happened? And what can be fixed?