Jose Mourinho said Chelsea produced a "perfect" performance in a 5-0 road win over Swansea City on Saturday, extending its lead at the top of the Premier League.

Oscar and Diego Costa both scored twice in the first half at Liberty Stadium to leave Chelsea 4-0 up before the break and substitute Andre Schurrle added a fifth goal 11 minutes from time.

Victory saw Chelsea move five points clear of Manchester City at the summit ahead of the champions' match at home to Arsenal on Sunday.