#3 Even in victory, Barcelona far from their fluid best
A glance at the 5-0 scoreline would suggest Barcelona were utterly dominant and while that might have been the case, it was not as pretty as fans of the club are used to.
Ernesto Valverde was sacked by the club chiefly because his side were not aesthetic on the eye and while Quique Setien might be a strong proponent of Johan Cruyff's methods, it would take some time for him to pass his message across to his players.
He showed great innovation by fielding his side in an unorthodox 3-4-1-2 formation, with Ansu Fati occupying the wing-back role while Arturo Vidal was deployed behind the front two of Messi and Griezmann.
For all the possession they had, they still found it difficult to create much from the middle and were still heavily dependent on Lionel Messi to break down the Leganes defence.
Ultimately, victory is all that matters, but as Valverde found out the hard way, sometimes it is not enough to just win, with the club having to win playing the 'Barcelona way' and the earlier Setien gets his methods ingrained with his players, the safer his job would be.