Jason Roberts on Final Score:  "Palace deserve the lead - this is not the sort of defensive display we're used to from Chelsea. I'm not even sure this would be a shock result. Pardew has got a great record against Mourinho and he's set his team up well."  

Image source, Reuters

No messing about now from Jose Mourinho. He throws Falcao into the mix, taking the place of Willian.

Moments later, 19-year-old Brazilian forward Kenedy comes on for Cesar Azpilicueta.

Pat Nevin
Ex-Scotland international on BBC Radio 5 live

Image source, Getty Images

"It's a fantastic break and goal for Palace. It's come down the left and they have got to the byeline for too easily for Chelsea's liking. It fell for Bakary Sako and for the second week in a row he's put the ball in the net."

No-nonsense defending from Damien Delaney as he puts himself in the way of a Branislav Ivanovic shot. He's down, clutching a, shall we say, delicate area. Taken one for the team there.

The average position graphic below shows Crystal Palace are not just sitting deep and defending.  

Image source, Opta

Pat Nevin
Ex-Scotland international on BBC Radio 5 live

"The game has really opened up now. Yannick Bolasie on for Palace and he'll be a danger on this left flank."

Yannick Bolasie, back from compassionate leave following the death of his father, is brought on for Wilfried Zaha. More for the Chelsea defence to think about.

Next, Thibaut Courtois has to be alert to keep out Bakary Sako's low effort. Palace are causing a few problems for the Chelsea defence at the moment.

Unconvincing defending by Chelsea as a ball into the box deflects off Kurt Zouma, it catches Branislav Ivanovic off guard as his attempt to then clear the loose ball almost ends up in his own net, but he is able to clear at the second attempt.

Connor Wickham then can't quite connect with Bakary Sako's teasing ball across the face of goal.

Image source, Getty Images

Another Chelsea shout for a penalty but I'm not having this one. Diego Costa chases a long ball and gets into the area, Damien Delaney slides in and puts the ball out for a corner. Costa wants a penalty, the Chelsea fans want a penalty. Nothing given.

Pat Nevin
Ex-Scotland international on BBC Radio 5 live

  "Chelsea will be expecting more of Eden Hazard in the second half, and they will need Cesc Fabregas to get on the ball more and influence things as well."  

Thibaut Courtois launches a slightly panicky clearance high into the air but not out of play and Jason Puncheon picks it up, tries to get into the area but Cesc Fabregas is in the right place to halt his run and clear.

Chelsea get us back under way.

Right then, the players are back out. Can Chelsea pick up from where they had left off in the first half and crack this Crystal Palace defence?

Here are the scores from elsewhere in the Premier League at half-time.

• Aston Villa 2-1 Sunderland
• Bournemouth 1-0 Leicester
• Chelsea 0-0 Crystal Palace
• Liverpool 0-2 West Ham
• Man City 0-0 Watford
• Stoke 0-1 West Brom

Pat Nevin
Ex-Scotland international on BBC Radio 5 live

"There's been lots of good play and good defending from Palace in the first half but you sense it's going to be harder for them as the game goes on and they get tired. Chelsea's best players really haven't turned up to the level you would expect so far."  

A slightly awkward mutual pat of the backs by Jose Mourinho and Alan Pardew as the half-time whistle goes.

A good battle, but goalless at the break.

Image source, AP

Chelsea are getting into their stride now, but it is just as half-time approaches. One minute of added time with the hosts trying to prise open the Palace defence.

Pat Nevin
Ex-Scotland international on BBC Radio 5 live

"One of Chelsea's best moves and it's not a surprise they've broken through Palace's defensive line when Hazard has run at them. A couple of great saves by Palace goalkeeper Alex McCarthy."