That's it from me, head over to our main live page for the rest of the night's action. 

All over and Chelsea go six points clear. How important could that save prove to be by Thibaut Courtois.

Big, big save! 

Patrick van Aanholt  launches a shot from the edge of the area, it seems destined for the top corner but Thibaut Courtois reaches out to push away.

Crucial.

A yellow card for Victor Moses after he clatters Patrick van Aanholt. Another opportunity for Sunderland now with a free kick midway inside the Chelsea half.

Three minutes of added time announced. A nervy three minutes for the ravelling Chelsea fans as Sunderland have a corner. Adnan Januzaj finds Jason Denayer, but his header is straight at Thibaut Courtois.

Chelsea eat up a few more seconds as they make their second change of the game, Nathaniel Chalobah on for Willian, who has done well on his return to his side.

Jordan Pickford is doing a fine job of preventing Chelsea from adding a second as he saves first from Willian and then picks the ball from the feet of Diego Costa. What a player Pickford is. 

A final change for Sunderland as Wahbi Khazri replaces Fabio Borini. Some Sunderland fans are heading for the exit, bit early? There's time for some late drama yet...

Sunderland are pressing a bit now as we approach the final 10 minutes. It's been far from comfortable at times for Chelsea.

First change for Chelsea as Nemanja Matic comes on for Pedro. A bit more of a physical presence to try and make the win safe. Bit of a compliment to Sunderland?

Gary Cahill slides in to poke the ball from the feet of Adnan Januzaj and behind for a corner. Januzaj fires in the corner but it is cleared. 

Chelsea break and Fabio Borini is booked as he pulls on N'golo Kante's shirt as the Chelsea man attempts to counter.

Chill Pill: I kinda pity Sunderland - they r working hard but their lack of quality is really undermining their efforts.  

It's no surprise Sunderland are playing so deep when they've got seven defenders on the pitch...

Chelsea have had 71% possession so far in the second half, but they remain only a goal ahead at the moment.

At the other end, Willian again wriggles his way into and across the area before having a pop, but sends it just wide. You sense there is at least one more goal in this game.

Fabulous cross by Patrick van Aanholt. It's just over Jermain Defoe's head and Chelsea get it away but only as far as Seb Larsson. The ball is at a nice height, Larsson lines up a shot and... skews it out for a throw.

Awful stuff, but he's just come on. We'll let that one slide, Seb...

Yep, looks like Billy Jones has done his groin in. Donald Love is on in his place. Right-back for a right-back.

Another change on the cards for Sunderland? Billy Jones is down and looks in some discomfort. David Moyes takes a look at his bench to assess his options.

We're approaching the hour mark and David Moyes makes his first change of the game. Jan Kirchhoff is the man to make way and he is replaced by Seb Larsson.

Needless yellow card for Pedro as he gets booked for kicking the ball away after being flagged offside.

Sunderland have pushed a few more players up in search of that equaliser, but that's leaving gaps at the back and Diego Costa almost exploits that as he is suddenly through on goal. He's got a lot of ground to make up and Lamine Kone gets back superbly to shrug Costa off the ball. No mean feat.