Chelsea faces Swansea City in the Capital One Cup semifinal on Wednesday. And while the debate on whether Fernando Torres will start the game ahead of new arrival Demba Ba is bound to fill column inches in the build-up, the emergence of David Luiz in his new midfield role could be the most significant.
Chelsea's Brazilian defender-cum-midfielder has impressed in his new role of late, but on Wednesday, Luiz will be tasked with the challenge of silencing the ever-impressive Michu, who scored again over the weekend as the Swans drew 2-2 with Arsenal in the FA Cup.
With a squad boasting some of the world's finest talent, the Blues are odds-on favourites to lift the Capital One Cup this term, but they will face a Swansea side with threats of its own.
We look at some of the key matchups in what promises to be a fascinating cup tie.