The rivalry between the two Belgian goalkeepers Simon Mignolet and Thibaut Courtois for instance. The battle for control in the centre of the park between Steven Gerrard and Cesc Fabregas. Or Mario Balotelli up against John Terry. It is certainly going to be an interesting game of football.
But perhaps the key battle will be between Liverpool centre-back Martin Skrtel and Chelsea striker Diego Costa. If it is, then Skrtel already has one up on the Spanish international.
The pair met recently. Costa was playing for Spain in a European Championships qualifier in Bratislava back in October.
It was a game in which he toiled, Skrtel thrived and Slovakia prevailed.
The European long-shots defeated Spain that night 2-1 - Costa struggled throughout with Skrtel receiving rave reviews for the way in which he shackled one of Europe's most in form defenders.
Liverpool fans will hope he performs an encore today.