Jurgen Klopp used to describe his Liverpool players as 'mentality monsters'. But for the first 40 minutes of this match, they were more like 'meek mice'.
Liverpool were asleep, 2-0 down and doing nothing to encourage any noise from their supporters.
Then Granit Xhaka woke them up. Stupidly so. By barging into Trent Alexander-Arnold and then squaring up to him, he riled up the Anfield crowd.
Their animosity was infectious and it brought this Liverpool team to life.
They were suddenly fuelled by fury and emerged for the second half totally up for it — all thanks to that one moment of misjudgment from Xhaka.