I've just now noticed that City have doubled up on advertising boards around the pitch. The commercial department never miss a trick do they?

You can probably tell that not a huge amount is happening.

It is a poor corner. Azpilicueta heads it away at the near post.

Is there a more consistent crime committed by professional footballers than failing to beat the first man at corners?

City win another corner as Christensen puts Mendy's cross behind.

Sterling almost takes a chance away from himself with a poor touch on the edge of the box, but bundles his way past a challenge and fires a bobbling shot that is an easy save for Mendy.

Werner again. He carries the ball to the edge of the box but curls his effort wide.

Hints of offside again, but those runs he is making are causing City problems.

Werner slams a shot into the back of the net, but with no joy. He knows he's offside by a mile as the low cross comes to him.

Good finish, though. If he'd shown that kind of coolness all season he'd have 30 goals.

Well, with 30 minutes gone, we're not really any closer to knowing if this is going to be the day we see the title settled.

City are the more forward-thinking, but Chelsea are doing a fine containment job so far.

Werner is in the wars today.

Laporte sticks a boot in the tackle the forward, getting the ball first but planting his boot on top of the German's foot.

Ake is having a decent game. He is winning tackles, driving forward. Sterling not so much. He gathers a pass from the centre-back and sets off before playing a pass behind Jesus. Attack over.

Image source, Getty Images

Chris Bevan
BBC Sport at Etihad Stadium

Replays showed Werner was offside just then, when he got behind the City defence in the move that led to Chelsea's free-kick, and some of the watching City players and staff made sure to let fourth official Jon Moss know about it, by yelling "offside" and "wake up Mossy" at him. At least they kept it clean.

City looking to turn the screw.

They win a couple of corners, with Ake just beaten to the first and Mendy coming out to claim the second.

Gotta love our readers. Huge game of football going on that could seal the title and all you want to do is make jokes about who the Queen supports. I salute you.

Charlie: All this talk of which team the Queen supports and no one has mentioned "One's Park Rangers" yet!

Eytan from London: The royal family obviously support Chelsea, blue blood and all that.

Keis from Brighton: Surprised nobody has mentioned Queen of the South yet.

The free-kick is whipped in over Werner in the box and headed away by Ake.

Werner's heavy touch denies him a good chance.

He breaks free of the City defence to latch on to a ball, but takes himself wide of the onrushing Edersen, allowing the City defence to rally.

A foul soon after gives Chelsea a free-kick wide right.

Still waiting for this catch fire.

We've had 20 minutes and it is all a bit cagey, which was probably quite predictable.

Rakesh Prattipati: Absolutely cynical challenge from Sterling. He got away with one there.

Jon Evans: Erm, why did VAR not turn that into a red? I think it is soft but almost every other team would have had that Sterling tackle turned into a red. The ref would've been given six slow-mo videos. Is it because they want to protect the spectacle?

Oh, just over the top.

Ake was in there to meet the corner and nod just over. He had a lot of men around him, which prevented him getting a clean contact.

This subject has brought all the comedians out.

City come forward again and win a corner via Rodri's deflected strike from range.