Michael Cox for Zonal Marking:
When Guardiola’s Barcelona side were pressed like this, they would continue playing short passes out from the back. Luis Enrique’s Barcelona, however, played longer passes into attack, and the game’s first clear chance came from a long Gerard Pique ball to Messi, who nodded the ball on for Suarez to race in behind. It was the most ‘route one’ Barcelona attack you’ll ever see, and required Neuer to make a good save.
You can argue, of course, that this was a simple mistake from Bayern’s defenders – Boateng tried to play offside, with Benatia playing Suarez on – but it’s not possible to separate this from the formation. The entire point is that defenders will sometimes make mistakes, sometimes get turned – the spare man can guard against attackers breaking through on goal under no pressure. It was the second time Suarez had got in behind, incidentally – he’d already fallen to the floor under a clumsy Boateng tackle.