It's all over, Chelsea can be grateful for Didier Drogba's double strike which has given them a crucial three points in the race for the title.
94
Gallas has moved up front for the away side, in a desperate attempt to get a goal.
93
Walcott attempts to make an impact on the game, but as he takes on Ashley Cole, he runs the ball on too far and it's a goal kick.
93
Eboue gives the ball away in a crucial position to Drogba, who then bursts down the right hand side before attempting to find Kalou in the area - Almunia gets there first though.
91
There is still time for the away side to get an equalising goal, they just need one moment of magic from one of their players.
90
We are into stoppage time now, with five minutes being announced by the fourth official.
89
Substitution
Chelsea also make a change, with Joe Cole being replaced by Mikel.
88
Substitution
It's a late change for Arsenal, with Nicklas Bendtner replacing Flamini - can he find the equaliser for his team?
87
Chelsea are searching for a third now, with Belletti just about stopped by Gael Clichy before he can cross into the box.
86
Five minutes to go now, if Arsenal can't find an equaliser it will have serious implications on their title challenge.
85
Flamini breaks down the right hand side, before his low cross into the box is cut out by Terry before it could reach Adebayor.
83
Drogba almost gets his hat-trick, but his low shot is saved brilliantly by Aluminia - great save.
81
Goal
Drogba puts Chelsea ahead after he latches onto a Anelka flick on before firing a shot into the net from 8 yards out - what a turnaround!
80
It has to be said that as the substitutions were made for Chelsea just before they equalised, chants of 'you don't know what you're doing' were directed at Avram Grant. Although Drogba's strike has gone some way to silencing the critics.
78
The next 15 minutes or so of this game could have a huge baring on the remainder of the season for these teams, although you get the feeling Arsene Wenger might settle for a point now.
77
Substitution
The hard working Van Persie is replaced by Theo Walcott.
76
The Chelsea crowd is rocking now, as Anelka drags the ball wide of the post after being played through by Lampard - that was a good chance for a player of his quality.
75
Van Persie has a good chance to put the away side in front again, but his shot from inside the area goes wide of the post.
74
Yellow Card
Drogba is booked for taking his shirt off in celebration.
73
Goal
Drogba equalises for Chelsea, after latching onto a long ball before firing the ball into the corner of the net.
72
Substitution
Vassiriki Abou Diaby is brought on to replaced the injured goalscorer Sagna.
71
Substitution
An equally unhappy Ballack is replaced by Juliano Belletti in a double change for the home side.
70
Substitution
An unhappy Makelele is replaced by Anelka as Chelsea go for the win.
69
Great chance for the home side. After Gallas clears Joe Cole's cross, the ball falls to Ballack who fails to connect properly with his shot which is saved by Almunia in the Arsenal goal.
68
With Carvalho bandaged up after a cut to the head, Sagna limps of gingerly and may have to be replaced.
67
There is a stoppage in play as Carvalho and Sagna recieve treatment for injuries.
65
After Gallas does well to stop good work from Kalou, a Lampard corner is punched away by Almunia. Can Arsenal hold onto this lead?
64
Chelsea may consider a change soon, with Anelka and John Obi Mikel the obvious choices.
63
It seems that Chelsea's amazing home record could be under threat now, they haven't lost at home since February 2006 in all competitions.
62
Ashley Cole almosts responds for the home side, as he headers wide from a Ballack cross with the goal at his mercy - what Chelsea would have done to have Drogba or Kalou on the end of that.
60
Lampard could take some blame for that one, he lost Sagna too easily at the near post.
59
Goal
A Fabregas corner results in the opening goal of the game as Sagna heads the ball home from the near post - great header.
58
It's been a different season for Adebayor who has 19 Premier league strikes to his name. He nearly makes it 20 as his shot is saved well by Cudicini.
57
It hasn't exactly been a prolific season for Droga, he has only netted 6 times in the league so far.
55
Another fantastic chance for Drogba, as Makelele excellent through ball sees the striker beat the off-side trap but under pressure from Gallas he strikes the ball wide of the post.
54
Since Chelsea lost to Arsenal back in December, they have gone unbeaten in the league - winning nine and drawing four.
52
This is end to end stuff now, with both sides searching for a crucial win - it might not be long until we have the first goal now.
51
Chelsea's first corner of the second half sees Lampard find Terry who headers into the danger zone, before Ballack is ruled to have fouled Gallas.
50
Some neat play from Joe Cole and Lampard almost results in the latter having an opportunity to strike at goal, but Joe Cole's final ball goes astray.
48
Good start to the second half from Arsenal, as they search for their first win in five Premier League games - they have drawn the last four.
47
Fabregas sets Van Persie away on the left hand side and his cross falls to Mathieu Flamini who sees his powerful effort stopped well by Cudicini.
46
It has to be said that the draw probably suits one team better, but they have already played - Manchester United.
Second half
The second half is underway, let's hope for some goals this time around - but which way will they go?
Half time
It's half time and despite both sides having their chances - it remains 0-0.
45
Great chance for Chelsea right on half time, as Joe Cole's cross almost falls to Kalou at the back post, but Almunia makes a crucial interception.
43
It's a strong finish from the home side, as Drogba send Joe Cole away. But he is put off having a shot on goal by some persistent defending from Fabregas.
41
An equally good chance is wasted - this time by Chelsea as the ball falls to Salomon Kalou six yards from goal. Somehow though, the striker misses the ball completely and Arsenal eventually clear the danger.
40
Gallas was eventually flagged offside, but it was Toure who will feel he should have done better there - his header from seven yards out should have at least found the target.
39
An Arsenal corner almost produces the opening goal, Fabregas whips the ball in and finds the head of Kolo Toure who sees his header fall to Gallas who proceeds to hit the post.
39
Lampard is lucky to get away without being booked after a crunching challenge from behind on Fabregas.
38
Makelele's ball out wide to Drogba is wasted by the striker, his cross / shot goes out for a goal kick - they need to test Almunia a lot more if they are to win this game.
36
Speaking of dissent, Ashley Cole who was criticised for his actions in mid week, is making his 300th club career start today - against his former club.
34
Yellow Card
Ballack is booked this time, for dissent - something which is on the minds of all referees at present.
33
The home side are on top now, this time they threaten through Joe Cole who sees his lofted cross cleared well by Arsenal - a poor final ball really.
32
Yellow Card
Joe Cole is booked after bringing down Van Persie - he can't have any arguments there.
32
The game is becoming streched for the first time, as Drogba's menacing cross only just misses a stretching Lampard at the back post.
29
Arsenal come close, as Van Persie knocks the ball into the path of Emmanuel Adebayor who mis hits a shot into the path of Eboue inside the six yard box. But the midfielder similarly fails to connect properly to his effort which Cudicini clears.
29
Sagna really is a threat down the right hand side for Arsenal, this time the full back is only stopped by a fantastic sliding challenge by Ricardo Carvalho.
28
As we approach the half an hour mark, we still await the first goal of the game. Although if the last few moments are anything to go by, it may not be far away.
26
Drogba has the best chance so far for the home side, with only Almunia to beat after being put through by Terry. But the Ivory Coast international loses his control and the attack breaks down - a great chance to open the scoring goes begging.
25
Van Persie has another attempt at goal, this time turning well before firing a left footed strike into the arms of Cudicini. Chelsea must be careful in letting the striker have too many opportunites as he can be a threat from outside the area.
24
Claude Makelele's inventive through ball finds Joe Cole on the right, who does well to get his cross in but fails to find Drogba who was waiting in the middle.
23
It's been a good spell for Arsenal, they are playing their passing game and despite failing to properly test Cudicini, they wil be happy enough with their start.
22
Ballack's sloppy pass gives the ball away to Eboue, who dribbles his way through two challenges before finding Hleb who sees his cross cut out well by Terry - great play from the visitors.
20
The corresponding fixture last season saw the sides draw 1-1, a similar result today would perhaps suit the away side more but make no mistake - they are both after three points.
19
An ambitious strike from Eboue is headed away by Terry after the winger had spotted Cudicini off his line, a crucial clearance from the Chelsea skipper.
18
Drogba could have a problem it seems, the striker is moving fairly uncomfortably and Nicolas Anelka has been sent to warm up.
16
Robin van Persie spread the ball wide to Alex Hleb before recieving the ball back from his team-mate only to fire the ball wide of the post - a half chance for the Dutchman there.
15
Gallas is getting jeered with every touch today, the Chelsea fans aren't forgetting his decision to leave the club a couple of years ago.
14
A great chance to hit Arsenal on the counter attack is wasted, as Michael Essien's first involvement of the game is to charge down the right hand side before failing to find any of his awaiting team mates with his final ball.
12
A spell of sloppy passing sees the game adopt a scrappy feel to it - first Cesc Fabregas gives the ball away to Lampard, before the England midfielder launches a wasteful ball straight to Gallas' feet.
11
Avram Grant has Drogba, Frank Lampard and Terry in his side for only the fifth time since taking charge today - they are such vital members of this Chelsea team.
10
Bacary Sagna powers his way down the right hand side in trademark fashion, but his loose pass avades Eboue and goes out for a goal kick.
8
Chelsea have started on the front foot, as they attempt to improve their record against the top sides in the division. In the last nine meeting with the other 'big four' sides they have drawn six and lost three.
7
The re-taken free kick is hit by Michael Ballack this time, who sees his curling shot saved comfortably by Manuel Almunia.
5
Yellow Card
It's an early yellow card for Emmanuel Eboue for charging down Drogba's free kick, before it had been hit - silly caution to recieve at this stage of the game.
5
Didier Drogba latches onto a long ball from Carlo Cudicini before turning well and being brought down by his former team mate William Gallas - that will be a key battle today.
4
It's a lively start to the game as you may expect, with both sides needing a win after Manchester United's win earlier in the day.
3
Excellent early run from Robin van Persie sees the winger burst down the left before producing a cross which is easily cut out by Chelsea captain John Terry.
2
Arsenal have a very good recent record against Chelsea at the Bridge, they have won four and drawn six of their last eleven meetings here.
Kickoff
Underway at Stamford Bridge, in a crucial top of the table clash.
Chelsea
Arsenal
Full time
It's all over, Chelsea can be grateful for Didier Drogba's double strike which has given them a crucial three points in the race for the title.
Gallas has moved up front for the away side, in a desperate attempt to get a goal.
Walcott attempts to make an impact on the game, but as he takes on Ashley Cole, he runs the ball on too far and it's a goal kick.
Eboue gives the ball away in a crucial position to Drogba, who then bursts down the right hand side before attempting to find Kalou in the area - Almunia gets there first though.
There is still time for the away side to get an equalising goal, they just need one moment of magic from one of their players.
We are into stoppage time now, with five minutes being announced by the fourth official.
Substitution
Chelsea also make a change, with Joe Cole being replaced by Mikel.
Substitution
It's a late change for Arsenal, with Nicklas Bendtner replacing Flamini - can he find the equaliser for his team?
Chelsea are searching for a third now, with Belletti just about stopped by Gael Clichy before he can cross into the box.
Five minutes to go now, if Arsenal can't find an equaliser it will have serious implications on their title challenge.
Flamini breaks down the right hand side, before his low cross into the box is cut out by Terry before it could reach Adebayor.
Drogba almost gets his hat-trick, but his low shot is saved brilliantly by Aluminia - great save.
Goal
Drogba puts Chelsea ahead after he latches onto a Anelka flick on before firing a shot into the net from 8 yards out - what a turnaround!
It has to be said that as the substitutions were made for Chelsea just before they equalised, chants of 'you don't know what you're doing' were directed at Avram Grant. Although Drogba's strike has gone some way to silencing the critics.
The next 15 minutes or so of this game could have a huge baring on the remainder of the season for these teams, although you get the feeling Arsene Wenger might settle for a point now.
Substitution
The hard working Van Persie is replaced by Theo Walcott.
The Chelsea crowd is rocking now, as Anelka drags the ball wide of the post after being played through by Lampard - that was a good chance for a player of his quality.
Van Persie has a good chance to put the away side in front again, but his shot from inside the area goes wide of the post.
Yellow Card
Drogba is booked for taking his shirt off in celebration.
Goal
Drogba equalises for Chelsea, after latching onto a long ball before firing the ball into the corner of the net.
Substitution
Vassiriki Abou Diaby is brought on to replaced the injured goalscorer Sagna.
Substitution
An equally unhappy Ballack is replaced by Juliano Belletti in a double change for the home side.
Substitution
An unhappy Makelele is replaced by Anelka as Chelsea go for the win.
Great chance for the home side. After Gallas clears Joe Cole's cross, the ball falls to Ballack who fails to connect properly with his shot which is saved by Almunia in the Arsenal goal.
With Carvalho bandaged up after a cut to the head, Sagna limps of gingerly and may have to be replaced.
There is a stoppage in play as Carvalho and Sagna recieve treatment for injuries.
After Gallas does well to stop good work from Kalou, a Lampard corner is punched away by Almunia. Can Arsenal hold onto this lead?
Chelsea may consider a change soon, with Anelka and John Obi Mikel the obvious choices.
It seems that Chelsea's amazing home record could be under threat now, they haven't lost at home since February 2006 in all competitions.
Ashley Cole almosts responds for the home side, as he headers wide from a Ballack cross with the goal at his mercy - what Chelsea would have done to have Drogba or Kalou on the end of that.
Lampard could take some blame for that one, he lost Sagna too easily at the near post.
Goal
A Fabregas corner results in the opening goal of the game as Sagna heads the ball home from the near post - great header.
It's been a different season for Adebayor who has 19 Premier league strikes to his name. He nearly makes it 20 as his shot is saved well by Cudicini.
It hasn't exactly been a prolific season for Droga, he has only netted 6 times in the league so far.
Another fantastic chance for Drogba, as Makelele excellent through ball sees the striker beat the off-side trap but under pressure from Gallas he strikes the ball wide of the post.
Since Chelsea lost to Arsenal back in December, they have gone unbeaten in the league - winning nine and drawing four.
This is end to end stuff now, with both sides searching for a crucial win - it might not be long until we have the first goal now.
Chelsea's first corner of the second half sees Lampard find Terry who headers into the danger zone, before Ballack is ruled to have fouled Gallas.
Some neat play from Joe Cole and Lampard almost results in the latter having an opportunity to strike at goal, but Joe Cole's final ball goes astray.
Good start to the second half from Arsenal, as they search for their first win in five Premier League games - they have drawn the last four.
Fabregas sets Van Persie away on the left hand side and his cross falls to Mathieu Flamini who sees his powerful effort stopped well by Cudicini.
It has to be said that the draw probably suits one team better, but they have already played - Manchester United.
Second half
The second half is underway, let's hope for some goals this time around - but which way will they go?
Half time
It's half time and despite both sides having their chances - it remains 0-0.
Great chance for Chelsea right on half time, as Joe Cole's cross almost falls to Kalou at the back post, but Almunia makes a crucial interception.
It's a strong finish from the home side, as Drogba send Joe Cole away. But he is put off having a shot on goal by some persistent defending from Fabregas.
An equally good chance is wasted - this time by Chelsea as the ball falls to Salomon Kalou six yards from goal. Somehow though, the striker misses the ball completely and Arsenal eventually clear the danger.
Gallas was eventually flagged offside, but it was Toure who will feel he should have done better there - his header from seven yards out should have at least found the target.
An Arsenal corner almost produces the opening goal, Fabregas whips the ball in and finds the head of Kolo Toure who sees his header fall to Gallas who proceeds to hit the post.
Lampard is lucky to get away without being booked after a crunching challenge from behind on Fabregas.
Makelele's ball out wide to Drogba is wasted by the striker, his cross / shot goes out for a goal kick - they need to test Almunia a lot more if they are to win this game.
Speaking of dissent, Ashley Cole who was criticised for his actions in mid week, is making his 300th club career start today - against his former club.
Yellow Card
Ballack is booked this time, for dissent - something which is on the minds of all referees at present.
The home side are on top now, this time they threaten through Joe Cole who sees his lofted cross cleared well by Arsenal - a poor final ball really.
Yellow Card
Joe Cole is booked after bringing down Van Persie - he can't have any arguments there.
The game is becoming streched for the first time, as Drogba's menacing cross only just misses a stretching Lampard at the back post.
Arsenal come close, as Van Persie knocks the ball into the path of Emmanuel Adebayor who mis hits a shot into the path of Eboue inside the six yard box. But the midfielder similarly fails to connect properly to his effort which Cudicini clears.
Sagna really is a threat down the right hand side for Arsenal, this time the full back is only stopped by a fantastic sliding challenge by Ricardo Carvalho.
As we approach the half an hour mark, we still await the first goal of the game. Although if the last few moments are anything to go by, it may not be far away.
Drogba has the best chance so far for the home side, with only Almunia to beat after being put through by Terry. But the Ivory Coast international loses his control and the attack breaks down - a great chance to open the scoring goes begging.
Van Persie has another attempt at goal, this time turning well before firing a left footed strike into the arms of Cudicini. Chelsea must be careful in letting the striker have too many opportunites as he can be a threat from outside the area.
Claude Makelele's inventive through ball finds Joe Cole on the right, who does well to get his cross in but fails to find Drogba who was waiting in the middle.
It's been a good spell for Arsenal, they are playing their passing game and despite failing to properly test Cudicini, they wil be happy enough with their start.
Ballack's sloppy pass gives the ball away to Eboue, who dribbles his way through two challenges before finding Hleb who sees his cross cut out well by Terry - great play from the visitors.
The corresponding fixture last season saw the sides draw 1-1, a similar result today would perhaps suit the away side more but make no mistake - they are both after three points.
An ambitious strike from Eboue is headed away by Terry after the winger had spotted Cudicini off his line, a crucial clearance from the Chelsea skipper.
Drogba could have a problem it seems, the striker is moving fairly uncomfortably and Nicolas Anelka has been sent to warm up.
Robin van Persie spread the ball wide to Alex Hleb before recieving the ball back from his team-mate only to fire the ball wide of the post - a half chance for the Dutchman there.
Gallas is getting jeered with every touch today, the Chelsea fans aren't forgetting his decision to leave the club a couple of years ago.
A great chance to hit Arsenal on the counter attack is wasted, as Michael Essien's first involvement of the game is to charge down the right hand side before failing to find any of his awaiting team mates with his final ball.
A spell of sloppy passing sees the game adopt a scrappy feel to it - first Cesc Fabregas gives the ball away to Lampard, before the England midfielder launches a wasteful ball straight to Gallas' feet.
Avram Grant has Drogba, Frank Lampard and Terry in his side for only the fifth time since taking charge today - they are such vital members of this Chelsea team.
Bacary Sagna powers his way down the right hand side in trademark fashion, but his loose pass avades Eboue and goes out for a goal kick.
Chelsea have started on the front foot, as they attempt to improve their record against the top sides in the division. In the last nine meeting with the other 'big four' sides they have drawn six and lost three.
The re-taken free kick is hit by Michael Ballack this time, who sees his curling shot saved comfortably by Manuel Almunia.
Yellow Card
It's an early yellow card for Emmanuel Eboue for charging down Drogba's free kick, before it had been hit - silly caution to recieve at this stage of the game.
Didier Drogba latches onto a long ball from Carlo Cudicini before turning well and being brought down by his former team mate William Gallas - that will be a key battle today.
It's a lively start to the game as you may expect, with both sides needing a win after Manchester United's win earlier in the day.
Excellent early run from Robin van Persie sees the winger burst down the left before producing a cross which is easily cut out by Chelsea captain John Terry.
Arsenal have a very good recent record against Chelsea at the Bridge, they have won four and drawn six of their last eleven meetings here.
Kickoff
Underway at Stamford Bridge, in a crucial top of the table clash.