Premier League clashes don't come much bigger than Chelsea versus Liverpool.
Particularly this season, as the duo look set to join Manchester City in a proper title chase.
On Saturday, the two do battle at Stamford Bridge in an early test of their respective title credentials.
But how much do you know about this fixture’s recent past?
From Mo Salah and Daniel Sturridge to Fernando Torres and Yossi Benayoun, a number of Premier League stars past and present have played for both clubs – but who is the only one to have scored in this fixture for each side?
And did you know there has been only one hat-trick scored in the history of this Premier League fixture? Well, who was it?
Take our tricky quiz below and put your knowledge to the test – and then share it with your mates to prove just how much you know ahead of a Premier League mega-fixture.