Roberto Firmino provided a goal and assist as the hosts looked to be cruising to an easy win before Adam Johnson and Jermain Defoe struck back in the final stages
Liverpool collapsed from a two-goal lead to draw 2-2 with Premier League strugglers Sunderland on Saturday.
With manager Jurgen Klopp a late withdrawal from the game due to a bout of appendicitis, the Reds looked just as sluggish as their relegation-threatened opponents in a turgid first half but cranked it up a level after the break and soon made the breakthrough.
A fine cross from the left wing by James Milner, aimed deep in towards the far post, picked out Roberto for a firm header as the Brazilian continued his fine recent form in front of goal.
The impressive Firmino was not done there, turning provider after 69 minutes for Lallana to tap in as the Reds capitalised on their chances coming thick and fast.
However, the mood turned in the closing stages as, moments after swathes of the home crowd began a mass walkout over ticket prices, Adam Johnson netted a free kick for the Black Cats.
Seven minutes later, Jermain Defoe beat Mamadou Sakho all ends up to find space for a shot past Simon Mignolet, sending an already quieter Anfield into shock.
More to follow...
- Goal