Arsenal travel to Chelsea for Sunday's London derby in the Premier League.
You can find out more about our opponents below.
Full name: Chelsea
Interim manager: Rafael Benitez
Club colours: Blue shirts, blue shorts, white socks
Nickname(s): The Blues
Three facts about Chelsea:
- They are the current holders of the Champions League, but have already been knocked out of this season's competition
- Chelsea have won the Premier League three times since 2005
- Left back Ashley Cole began his career at Arsenal
A classy playmaker, Mata has lit up the Premier League since signing for Chelsea in 2011, and was named the club's Player of the Year in his first season at Stamford Bridge. Immensely talented, the Spaniard's vision and creativity has carved open team after team, and the 24-year-old will have to be monitored closely by Arsenal's midfield and defence on Sunday lunchtime.