Chelsea produced a stunning first-half display as they beat Swansea City 5-0 in the Barclays Premier League, BPL Saturday.
A scintillating first-half display from Jose Mourinho's men saw them run riot at the Liberty Stadium, with four of the visitors' five goals coming before the break. Swansea were the architects of their own downfall at times, though, with Oscar profiting from a poor pass to open the scoring from 20 yards within the opening minute, and Costa opening his account with a composed finish.
The striker added his second following a mistake from Federico Fernandez in the 34th minute, before he turned provider as Oscar made it four two minutes later.
Chelsea coasted to victory in the second half, with Andre Schurrle rounding off the scoring from close range late on.
Victory sees Chelsea move five points clear at the top of the table - second-placed Manchester City face Arsenal on Sunday, while Swansea remain in ninth after their heaviest defeat of the season. With Leon Britton side-lined by a groin injury, Swansea were forced to play Gylfi Sigurdsson in a deeper midfield role, and it cost them almost instantly.