Swansea City have earned a 2-0 win over Chelsea in the first leg of their Capital One Cup semi-final at Stamford Bridge.

Michu and Danny Graham scored the goals for the visitors to put them in control ahead of the second leg at the Liberty Stadium.

Despite a succession of early corners, it took Chelsea 27 minutes before they carved out their first real opportunity through Juan Mata.

The Spaniard was fed by Eden Hazard in the area, but his tame shot was held by Gerhard Tremmel.

Mata dragged another effort wide soon after before Michu gave Swansea the lead in the 39th minute when he fired in following a mistake from Branislav Ivanovic.

The Chelsea defender was caught in possession on the edge of his own area, which allowed the Spanish forward the chance to smash the ball past Ross Turnbull.

Tremmel was called into action at the other end before the hour as he kept out David Luiz's fierce drive.

Rafael Benitez introduced Frank Lampard and Demba Ba inside the final 15 minutes and it was the new signing who came close to finding the net late on.

The striker managed to guide his header towards goal, but Tremmel was there again to keep the ball out.

Instead, Swansea struck again in injury time when substitute Graham tapped in following another mistake from Ivanovic.

The defender's weak backpass went straight to the forward, who kept his composure to slot the ball home.