Diego Costa nearly has the final word but Brad Guzan just nips in ahead of him to palm away Ramires' cross.

Before that, Costa ran into the back of Ashley Westwood, sparking another little tussle. He just can't stay away from bother can he?

Four minutes added.

Eden Hazard gets a little cameo, coming on for Pedro, who has been quiet this half.

Diego Costa does a superb job for his team, holding the ball up and winning a free-kick off Micah Richards, who gets in a tangle with the striker and chests him down.

It looks like there was a flailing arm from Costa that caught the Villa man. I wouldn't be confident to say it was intentional, though. But this is Costa and his reputation follows him.

Finally, some singing from the home fans. It is only a brief rendition of a song but it shows there is still life out there. 

The home team greet the rise in noise by creating a great chance as Willian's pass finds Cesc Fabregas is space in the box for a shot that flashes a yard past the post.

Chelsea are heading for victory here but you wouldn't know it. The stadium is very quiet.

Good work from Chelsea denies Joleon Lescott as a number of bodies throw themselves in front of the ball as it drops at the defenders feet following a free-kick into the box. The Blues have not had to defend much this half but they did that superbly.

This definitely won't do for Villa, who make another change. Jordan Ayew departs and Adama Traore is introduced.

Villa look done. Pedro is found on the right corner of the box in acres of space, but his shot flies past the far post.

Soon after, Cesc Fabregas' cross is met by the head of Diego Costa in the box but not with the power to test Brad Guzan.