Wilfried Zaha is signing autographs for Chelsea fans. What a man. He was brilliant today. Unstoppable and full of tricks... all the Palace team deserve credit, though. What a shift they put in.

It's been quite an afternoon.  For reaction from Stamford Bridge, head here.

For a developing match report, head here  instead.

Amazing scenes at Stamford Bridge, where Chelsea have not been beaten since 16 September - until now. 

Palace are celebrating on the pitch and in the stands.

But Wayne Hennessey comes running out to punch clear. A whistle goes, the Palace fans celebrate, but this isn't over... it was an offside.

How much longer will this game go on? Chelsea are on the attack again and have a free-kick, 40 yards out. The keeper is up...

Another Chelsea cross comes in but Pedro is offiside... Palace have the free-kick.

Seconds left for Palace to hold out. They have defended brilliantly today.

How's this for a late sub - Ruben Loftus-Cheek is coming on for Cesc Fabregas. We have had seven minutes of stoppage time, but still this game goes on.

A chance for Palace to wrap it up... they work the ball out wide from a free-kick and the ball comes back to Wilfried Zaha in front of goal after his back-heel opens Chelsea up... the goal is gaping, but he cannot find the target from about 10 yards out.

About three minutes of stoppage time to go, by my reckoning.

Michy Batshuayi has not done much since coming on for Chelsea, but he wins a corner here after trying to twist past Martin Kelly... there will be seven minutes of added time at the Bridge, and we have played two of them.

Mamadou Sakho needs treatment. Diego Costa is keen that referee Craig Pawson stops his watch.

Time running out for Chelsea. Diego Costa gets on the end of a Cesc Fabregas ball into the box, but his header flies over.

Here come Chelsea again, with lots of men forward. Wayne Hennessey pushes away Cesc Fabregas's shot, for his 11th save of the game, but the ball is still spinning around the Palace box - anywhere will do - and it does. The Eagles clear.

David Luiz has got away with a couple of late tackles in the last few minutes but goes in the book this time after grabbing hold of Christian Benteke's shirt.

Amazing scenes in the Palace box. Diego Costa looks like turning the ball home after the ball is deflected into his path  inside the box, but Mamadou Sakho somehow clears it before he can let fly. Then Willian flashes in a peach of a cross that nobody can get on the end of. Chelsea are getting desperate here.

Palace make a mess of the resulting free-kick, however, and are grateful to Mamadou Sakho for making a brilliant sliding block to stop Chelsea's swift break from reaching Diego Costa in front of goal.

Another booking - Gary Cahill stops Wilfried Zaha from sprinting away from him by bringing him down. That's probably the only way to stop Zaha today.

Chelsea bend in another cross, and this time Diego Costa gets on the end of it after grappling with Mamadou Sakho... but his header bounces wide.

Chelsea are going to try something different - we have not seen much of their £33m striker Michy Batshuayi this season, but he is on for Marcos Alonso.

He has at least 15 minutes to make a difference... there will be quite a lot of stoppage time too, after that injury to Scott Dann.

Chris Powell
Former England full-back on Final Score

Palace are on the front foot there... Spurs winning (0-1 v Burnley) and Chelsea losing - who knows? This title race might not be over.