The whistle goes and that is it. Hardly a classic but Chelsea progress to round five.
Final minute and a throw on the right for Chelsea at halfway taken by Ivanovic.
Late surge forward to the edge of the Chelsea area by Adam but his shot is deflected away from the danger area.
There will be four additional minutes.
Ba gets in behind the Stoke defence as he controls a long ball but the flag is up for offside.
Quick news on an earlier subsitution - Charlie Adam on for Arnautovic.
Shawcross back up to battle on.
Powerful shot from Willian hits Shawcross in the family jewels and he is currently taking a few deep breaths on the ground in his own penalty area.
Demba Ba is introduced by Chelsea to replace Eto'o. At the same time, Pieters has been replaced by Marc Muniesa for Stoke.
Luiz cracks a tremendous free-kick from the edge of the Stoke area but Beogovic is up to the task and makes a flying save to his right.
Pieters actually ends up in the ref's notebook.
Ramires finally gets a decision as he is brought down by Pieters on the edge of the Stoke area.
Willian comes on for Oscar.
Screams from the Chelsea fans for a penalty as Ramires goes down under pressure.
Another change for Chelsea in the offing as Willian gets ready come on.
The ball won't go in for Chelsea as Hazard's cross from the byline on the left can't be forced home by either Ramires or Eto'o from no more than a two yards out in a desperate scramble.
Good save down to his right by Begovic from a well-controlled half-volley by Lampard from edge of the Stoke area.
Good tackle by Ireland in his own box as Hazard scuttles towards the byline before attempting a cross.
Deep cross from the left by Pieters and Walters gives the home crowd a laugh as he falls flat on his back trying to bring the ball down.
Stoke make a change as Oussama Assaidi comes on for Palacios.
Ramires' first contribution is to be tripped up by Palacios which leaves the Brazilian in some discomfort.
Schurrle goes off for Ramires.
Geat skill again from Hazard as he jinks past a defender and his low cross is somehow cleared by the Stoke defence without it flying into the net for an OG.
Looks like Ramirez is ready to come on for Chelsea.
Superb ball from Eto'o to find Lampard on the penalty spot in the Stoke area. The midfielder turns well but can't quite find a shot so he tries to find Eto'o again before the ball is cleared.
Oscar has another try from the edge of the Stoke box but this is easily saved by Begovic.
Eto'o and Hazard again try and find a way through the Stoke rearguard but there are enough red and white shirts back to crowd them out.
The corner is taken but gathered this time by Begovic.
Corner for Chelsea on the right taken by Lampard which is cleared. Gary Cahill picks up the ball and is urged to shoot from 25 yards but his effort is deflected behind for another corner on the left this time.
Stoke press again and Ireland has a half-chance on the volley but the ball bounces head high and his attempt floats into the arms of Schwarzer.
Austrian Marko Arnautovic takes the free-kick and tries to curl one into Mark Scwarzer's goal but it is well wide of the target.
Ivanovic clatters into the back of Walters 30 yards from the Chelsea goal so a good chance to threaten an equaliser.
Chelsea are back on the attack and once again it is Schurrle with the shot, this time saved by Begovic at his near post.
Stoke have some possession of their own in the Chelsea area and it results in Walters finding a yard of space but shooting wide of the target.
More tremendous play from Oscar and Schurrle as the latter sets up his team-mate for a shot just inside the Stoke area. His curling effort is just wide of the post.
Ivanovic gets slowly to his feet on halfway after what looked like a collision off the ball.
Crouch tripped just inside the Chelsea half by Lampard and wins the free-kick.
Chris Green says: "Chelsea have been the better team so far, but I wouldn't rule out a Stoke equaliser just yet!"
Hazard desperately trying to find an opening on the edge of the Stoke area but tries to a bit too much and loses possession.
Swift break from Chelsea as Oscar finds Schurrle in the Stoke box but his precise attempt hits the post.
Cole and Hazard combine early down the left but the latter's deep cross sails behind for a Stoke goal-kick.
Chelsea get the game restarted.
Simon from Peterborough says: "Very well controlled half, again hazard causing loads of problems, but what a gem of a goal from that lad Oscar!"
Hi to Nick Brackenbury: "Chelsea have always struggled against Stoke for some reason, but then you can't expect to win every match just because you are the better team. On this occasion Chelsea are the better team and will win. Stoke are being very challenging but Chelsea have defended well plus had many more near misses on the goal. Also, Mourinho will 'do some magic' during the half time break."
Sky Bet have some half-time Price Boosts so you can back Chelsea to win 3-0 at 4/1, while Stoke to win 2-1 is on offer at 70/1. Frank Lampard is an 8/1 chance to score the next goal.
Chelsea are not expected to relinquish their grip on the game and are 1/20 at Sky Bet for the win. Stoke are 28s and the draw is 9/1 - Eden Hazard has been tremendous again and he is 8/1 to score the next goal.
The whistle goes for the interval.
The last action of the half sees Wilson go in the book as he fells Hazard on the right.
Late corner on the right for Stoke taken by Ireland but Cameron can't sort his feet out and get a shot on target.
Great skill from Oscar again as he wriggles between defenders. He finds Eto'o and once again Shawcross has to save the day and prevent a second Chelsea goal.
A rash of corners for Chelsea as they push for a second and Lampard goes close once again but his shot from the edge of the area rises just over the bar.
As the game swings from end to end, Oscar then rattles the post with a fierce shot from 12 yards with Begovic well beaten.
Stephen Ireland almost immediately grabs a Stoke equaliser but his left-foot shot hits the side netting.
Lampard should have made it 2-0 as Hazard dances down the right and drills in a low cross but Lampard can't connect with the goal gaping.
Throw to Stoke on the right deep in the Chelsea half. The Potters retain possession as they try find an opening but once again the ball is cleared by the Chelsea rearguard comfortably.
A rare wayward pass from Hazard is intercepted as he tries to find Schurrle on the left.
Shawcross shoves Lampard over and the latter delivers a free-kick from the right that looks dangerous but Begovic gathers.
Long ball once again from the back looks for an isolated Couch but it is well over his head and tidied up by Luiz.
Luiz and Crouch collide on halfway and the Stoke striker is left clutching his head for a few seconds as the game goes on.
All too easy for Chelsea at the moment as any attempt to get the ball forward from Stoke is comfortably dealt with again by the home side.
Hefty challenge from Geoff Cameron on Eden Hazard on the left flank and he correctly goes in the book.
Cross from the Stoke left into the Chlesea area almost finds Crouch but once again Luiz is in the way to clear.
Stoke attempt to strike back immediately and win a corner but the home defence has little problem clearing.
GOAL CHELSEA: Oscar scores a stunner from the free-kick as Luiz runs over the ball and the number 11 fires it into the top corner beyond the outstretched arms of Begovic.
Pieters is clumsy in his challenge on Eto'o and it is a free-kick to Chelsea on the edge of the Stoke area. Eto'o needs a bit of treatment.
More good work from Hazard, Eto'o and Oscar but Shawcross once again makes a great tackle in his own area as Oscar is about to size up a shot from 10 yards.
Crouch attempts a delicate ball to Jon Walters on the edge of the Chelsea area but Luiz steps in and makes the clearance.
Eto'o has some space down the right flank to break into but his attempted ball into the centre is easily cut out.
Matic attempts to clear upfield from halfway on the left but Crouch closes down well and it is a throw-in to the hosts.
Ball goes tamely behind once again so Begovic has another goal-kick to take for Stoke.
Schurrle and Steven N'Zonzi get in a tangle and the outcome is a free-kick to Stoke.
Frank Lampard takes a chance to shoot from 25 yards but it is well over the bar.
Good tackle from Ryan Shawcross as Schurrle is about to pull the trigger in the Stoke box after being set up by Eto'o and Oscar.
Hazard goes for the return in a one-two and goes over the leg of Wilson Palacios in the Stoke box but no penalty is forthcoming despite a ig shout from behind the goal.
Plenty of Stoke players behind the ball as they snuff out Hazard and Schurrle's attempt to get into the opposing area.
Erik Pieters gives away the first corner of the game on the right which is taken short by Chelsea. They attempt to get the ball into the centre but its is easily dealt with by the defence.
New man Nemanja Matic tries to thread a ball through to Hazard in the Stke area but is just a fraction too strong and goes behind.
"Hi Dave, Chelsea will struggle to defend against crouch today. Luis will be booked inside 30 minutes trying to deal with him." Paul from Chessington.
Marc Wilson under a little pressure at the back but he sees the ball safely behind for a Stoke goal-kick.
Andre Schurrle just caught offisde as he tries to break on to a long through ball from the back by Luiz.
Branislav Ivanovic's cross from the right into the Stoke box is gathered easily by Asmire Begovic.
Crouch gets in front of Luiz three yards from the Chelsea goal to meet a cross from the left but his header goes behind for a goal-kick.
First free-kick of the game as Peter Crouch is felled by David Luiz halfway inside the Chelsea half.
Samuel Eto'o nearly opens the scoring for the hosts after being found in the box by Eden Hazard. He swivels and his effort is just wide of the upright.
Stoke get the game under way.
Jamie Redknapp has predicted a 2-1 win for Chelsea in this one and if you want to follow him in at Sky Bet then it is a 9/1 chance - check out the market here and his other selections.
Good afternoon to Peter: "I'm an outsider to this game as I'm a Villa fan. There seems to be a lot of Chelsea love and little faith in Stoke. Its true that Chelsea have a fantastic team out with more goal scorers than most back lines can handle, but let's not forget: this is the FA Cup and anything can happen!"
Iain Hughes says: "C'MON YOU BLUES... I reckon a 4-1 win and its going to be a good game good to see matic starting for us again. Also thank you juan mata shame you had to leave but thats football!"
Here is a quick update from Sky Bet and if you fancy an away win then you can get 12/1 on the Potters. Chelsea are 2/9 with the draw on offer at 11/2. Check out all the markets here.
Hello to Bradd: "I've been a Chelsea fan for over 30yrs, through the good times & the very bad but lately I'm finding it very hard as a fan. Sold Mata, sold Essien, apparently selling Lukaku, Lampard not getting played enough, I just don't understand the current Chelsea football club."
Will from Colchester says: "Both teams naming strong sides, should be an interesting game, but I can't see anything other than a Chelsea win with the likes of Hazard playing from the start. 2-0 Chelsea!"
Hello to Chris Green from Huddersfield: "Chelsea to win 4-1, with Eto'o, Hazard (2) and Ivanovic scoring the goals."
Simon from Peterborough says: "Looking forward to seeing matic play with lampard, again very strong line up so looking at 3-1 Chelsea. Can I just say a big thank u to Juan Mata for all his effort in a blue shirt. Will be sadly missed. Care free."
Hello to Brian McCourt: "I'm going to go for a 2-1 win for Chelsea today, David. Stoke always give us a hard game but I can only see a Chelsea win especially since we are at home. Hazard to score along with Lampard with Ireland scoring late on for a consolation goal."
Pre-match: Nemanja Matic makes his second full debut in a Chelsea side showing five changes for Sunday's FA Cup fourth-round clash with Stoke at Stamford Bridge. Manager Jose Mourinho is hoping to celebrate his 51st birthday with a win and selects Mark Schwarzer, Ashley Cole, Frank Lampard, Andre Schurrle and Matic - the re-signing from Benfica who came on as a substitute in last weekend's 3-1 defeat of Manchester United. They replace Petr Cech, Cesar Azpilicueta, John Terry, Willian and Ramires. Stoke boss Mark Hughes, who won the FA Cup as a Chelsea player, makes five changes following the loss to Crystal Palace, with goalkeeper Asmir Begovic returning following a six-match absence as a result of a broken finger.
Stoke Team: Begovic, Cameron, Shawcross, Pieters, Wilson, Palacios,Nzonzi, Walters, Ireland, Arnautovic, Crouch. Subs: Muniesa, Whelan, Adam, Guidetti, Assaidi, Sorensen, Shotton.
Chelsea Team: Schwarzer, Ivanovic, Cahill, Luiz, Cole, Lampard, Matic, Hazard, Oscar, Schurrle, Eto'o. Subs: Cech, Ramires, Mikel, Ba, Willian, Terry, Azpilicueta.
Good afternoon and welcome along to Sunday's second FA Cup game. Feel free to get involved with the coverage so drop me a line with your thoughts at firstname.lastname@example.org.