Emirates Stadium side waltz to comfortable win over stuttering visitors from Anfield.
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After a bright opening Arsenal put Liverpool to the sword with three goals in eight minutes.
First full-back Hector Bellerin danced into the box, side-stepping some fairly non-existent challenges, before firing past Simon Mignolet.
Three minutes later Mesut Ozil doubled the home side’s lead with a superb free-kick, though it did appear that Mignolet may have misplaced his wall a tad.
Then on the stroke of half-time, the death knell for Brendan Rodgers’ side, Alexis Sanchez showed good control before thumping home Arsenal’s third.
Jordan Henderson reduced the deficit with a second half spot-kick, after Bellerin had felled Raheem Sterling.
Whilst Emre Can got his marching orders for a second yellow with five minutes left to play.
Arsenal completed the rout with in-form Frenchman Olivier Giroud finding the corner with an exquisite effort to mae it 4-1 in the dying moments of this rather one-sided encounter.