Juan Mata scored his first goal of the season as Chelsea comfortably beat Arsenal to reach the Capital One Cup quarter-finals.
Cesar Azpilicueta gave Chelsea a first-half lead on the break from an Arsenal corner, latching on to Carl Jenkinson's poor header back and poking in.
Aaron Ramsey fired a shot wide from 25 yards as Arsenal struggled to get a grip on the game.
Mata sealed victory after the hour mark with a sweet strike from 20 yards.
The Spaniard, who made only his sixth start of the season, was the shining light in a one-sided game where Chelsea demonstrated their superior squad strength to earn their sixth successive triumph.

































