Ugly stuff from Diego Costa.

The ball runs away from the Spain international and, in frustration, Costa dives two footed after it, ploughing into Craig Gardner.

A deserved yellow.

The advertising hoardings behind the West Brom goal are displaying a message from the Premier League respect campaign - "Get on with the game" it reads.

I wonder if Peter Scudamore is hoping it might have a subliminally calming effect on Diego Costa.

We are back under way.

Chelsea make a change with the ineffectual Pedro replaced by Brazilian youngster Kenedy.

Image source, Opta

It has been more even than you might have expected from the first 10 minutes.West Brom are giving as good as they are getting.

Oh dear.

The half ends with Diego Costa in full rage.

Anthony Taylor blew for the break just as Costa and a team-mate raced downfield on a swift counter.

West Brom were short-staffed at the back and it could well have been a chance for a Chelsea second.

Three minutes added on at the end of the first half.

Diego Costa's chin is jutting and his lip is running off.

The Chelsea striker is right in Jonas Olsson's ear offering opinions and winding the West Brom defender up like a spinning top.

Referee Anthony Taylor has a word to try and cool things down as their spat descends to a bit of push and shove.

That disagreement is not going to be resolved so easily I fear.

Roman Abramovich is in position. The billionaire Chelsea owner is leaning forward to get a better view of the action.

As he might, it has been a decent ding-donger so far.

Image source, Getty

You have to have your squad number on your protective face mask don't you?

Otherwise you might accidentally pick up a prop from Phantom of the Opera in the pre-match back-stage confusion.

See you later John Terry.

Salomon Rondon drops a shoulder and swivels, leaving the Chelsea captain behind.

Rondon clatters a shot goalwards and his rasping effort is only narrowly wide of the postage stamp.

Chelsea pile forward. This match is rumbling along like a closing-time scrap in a pub car park.

Oscar sees a shot deflected behind as the hosts picks holes a flimsy West Brom defence once again.

That goal has come out of nowhere. Chelsea have been side-swiped. Maybe the shock of it will zap the home crowd into life.

There is more atmosphere on the International Space Station than in Stamford Bridge tonight.

Kurt Zouma is at full stretch at one end, stretching out a leg Inspector Gadget style to poke the ball out of the reach of a lurking Baggies player in the Blues box...

Chelsea are pinging the ball around nicely. That goal has settled them down.

The footballing equivalent of the onion bhaji on an empty stomach.

A red card walking?

West Brom's Claudio Yacob - who is up against footballing rash Diego Costa - has picked up a yellow card for tripping the Chelsea striker and bringing a Blues counter to an abrupt end.

More creaking in the Chelsea defence as West Brom win another aerial duel.

James McClean's header is straight at Thibaut Courtois though.

Image source, Getty Images

If this football lark ever get a little bit boring for him, Eden Hazard has an alternative career as a catalogue model.

The injured Belgian is beaming Blue Steel from one of the executive boxes.