90+5 mins: The full-time whistle goes and Drogba's late double has given Chelsea three massive points. Can Arsenal recover from this or do their title hopes lie in tatters?
90+5 mins: Mikel intercepts Fabregas' pass and Drogba runs down the clock. Into the final few seconds.
90+4 mins: Hleb's ball forward is cut out as Chelsea stay resolute in defence. Gallas is now playing centre-forward for Arsenal.
90+3 mins: Walcottt runs the ball out of play as he tries to beat Ashley Cole on the right flank.
90+2 mins: Drogba almost plays in Kalou but Almunia comes out to take the cross.
90+1 mins: Bendtner tries to slot a ball forward but Chelsea intercept.
90 mins: Good news for Arsenal. There will be five minutes of added time.
89 mins: Adebayor concedes a free-kick on the edge of the Chelsea area.
88 mins: Final throw of the dice for Wenger as he brings on Nicklas Bendtner for Flamini. Chelsea also make their final substitution with Jon Obi Mikel replacing Joe Cole.
87 mins: Carvalho comes out of defence to make a vital interception. Walcott hasn't had a touch yet.
86 mins: The clock ticks down and Chelsea look to be holding firm.
85 mins: Five minutes to go. Arsenal have a habit of scoring late goals so this game is far from over yet.
84 mins: Flamini gets on the end of a cross but his looping header lacks pace and Cudicini makes the catch.
83 mins: The fingertips of Almunia deny Drogba a hat-trick. Belletti cuts the ball back into the box and Drogba's low shot is turned behind for a corner by the diving Arsenal goalkeeper. In it comes and Almunia finally gets the ball away after a scramble.
82 mins: Anelka almost pounces on another ball played into the Arsenal box.
81 mins: GOAL DROGBA. Anelka flicks on a cross to Drogba in the Arsenal box and the striker turns and beats Almunia to his right. 2-1 to Chelsea and what a turnaround by the hosts.
81 mins: Into the final 10 minutes. Sir Alex Ferguson will be extremely happy with this scoreline if it stays the same.
80 mins: Cole returns to the pitch and play resumes.
79 mins: Eboue plays the ball out to allow Joe Cole to have treatment.
78 mins: Diaby tries to work space for a shot but Chelsea clear.
77 mins: Arsenal bring on Theo Walcott for Van Persie.
76 mins: Cole finds Anelka on the right edge of the box but the Frenchman drags a poor shot across goal and behind for a goal-kick.
75 mins: Lampard curls a free-kick to the far post which Terry heads back towards goal but the linesman somehow thinks the ball was already out and Arsenal have a goal-kick.
74 mins: Hleb finds Van Persie but the Dutchman is stretching as he attempts what could have been either a cross or a shot and the danger passes.
74 mins: Drogba is booked for taking off his shirt in the goal celebration.
73 mins: GOAL DROGBA. Chelsea press, the ball breaks to Drogba on the edge of the area and he thumps a low shot into the bottom corner to pull Chelsea level.
72 mins: Chelsea pour men into the box but Clichy whacks clear.
71 mins: Arsenal bring on Vassiriki Diaby for the injured Sagna.
70 mins: On come Nicolas Anelka and Juliano Belletti for Makelele and Ballack. The latter looks far from happy and there's shouts of "you don't know what you're doing" from the Chelsea crowd as they let Avram Grant know what they think of his decision to withdraw the German midfielder.
69 mins: Ballack has a decent chance as the ball comes to him in the box but he gets a poor connection and Almunia saves.
68 mins: Play finally resumes. Chelsea are preparing to make a double substitution while the Gunners will probably have to shuffle the pack too.
67 mins: Sagna limps to the touchline.
66 mins: Play is held up as Sagna continues to receive treatment to what looks like a twisted ankle. Carvalho is now wearing a bandage around his head.
65 mins: Sagna goes down as he clears from Kalou and needs treatment - as does Carvalho after taking a blow to the head.
64 mins: Lampard's corner is punched away by Almunia.
63 mins: Kalou spins well but Gallas turns his cross over the bar for a Chelsea corner.
62 mins: Carvalho's ball forward runs straight through to Almunia.
61 mins: Joe Cole swings in a cross to Ashley Cole at the far post but his header is wide of goal.
60 mins: Can Chelsea respond? They'll have to if they want to stay in the title race.
59 mins: GOAL SAGNA. In comes the corner from Fabregas and Sagna gets across his marker and guides a clever near-post header into the back of the net. It's his first goal for the Gunners and what a time to score it.
58 mins: The space is really starting to open up now and Van Persie wins Arsenal a corner.
57 mins: Cole chips a cross into the box but Toure heads clear. Arsenal burst down the other end but Chelsea get numbers back and they have to stay patient. The Gunners finally work the ball to Adebayor whose low shot is easily saved by Cudicini.
56 mins: Toure has to come across sharply to take the ball away from Joe Cole.
55 mins: Drogba is played in by Makelele but Gallas gets back to put the striker off as he pulls the trigger and the shot goes wide.
54 mins: Toure snakes out a foot to stop Lampard collecting a loose ball.
53 mins: Eboue handles the ball in a tussle with Makelele but the free-kick goes Arsenal's way.
52 mins: Gallas shows his pace to get to the ball in front of Joe Cole and pass back to his goalkeeper.
51 mins: Eboue's low cross from the right is cleared by the stretching Terry.
50 mins: Lampard's corner is nodded down by Terry but Sagna holds off Ballack and wins Arsenal a free-kick.
49 mins: Clichy fails to pick out Van Persie as Arsenal break and Chelsea counter-attack and win a corner.
48 mins: Ashley Cole tries a back-heel down the line and wins a throw. Joe Cole almost plays in Lampard but Arsenal clear. Both teams look as if they're going to really go for it in the second half.
47 mins: Van Persie's cross drops to Flamini at the far post and his thumping shot is well beaten away by Cudicini. Hleb then has the chance to play in Van Persie but can't pick him out.
47 mins: Toure misses his kick but Gallas gets him out of trouble.
46 mins:Chelsea get the second half under way. Neither side has made any changes at the break.
Half-time: Chelsea 0 Arsenal 0
45+1 mins: Joe Cole drives a dangerous cross into the area but Almunia does superbly well to poke out a toe and take the ball away from Kalou. It's the final action of an evenly contested first half.
45 mins: Just one minute to add.
45 mins: Toure barges into Kalou inside the box but Chelsea's penalty appeals are waved away.
44 mins: Fabregas juggles with the ball inside the Chelsea box but can't get his shot off. The game is really starting to liven up now.
43 mins: Joe Cole bursts into the box but Fabregas tracks back superbly and gets his body across the Chelsea attacker and Almunia picks up.
42 mins: Ballack hits a volley towards goal but Almunia gets across to make a smart save down by his post.
41 mins: Lampard chips the free-kick to the far post, Ballack heads down and somehow Kalou swishes at mid-air rather than the ball and a golden chance goes begging.
40 mins: Flamini trips Lampard and Chelsea have a free-kick 35 yards out. Up come the big men.
39 mins: Drama in the Chelsea box. Fabregas's corner is flicked on by Toure and Gallas strikes the post from close range. The offside flag had gone up though so it would have been chalked off.
39 mins: Van Persie's cross strikes Essien and Arsenal win a corner.
38 mins: Hleb tries to work space outside the Chelsea area but Joe Cole makes a good sliding tackle.
37 mins: Drogba's cross drifts behind for a goal-kick.
36 mins: Almunia has to dart out of his box again to kick clear.
35 mins: Eboue is treading a tightrope now as he commits another foul. He's already been booked and is quick to voice his opinion.
34 mins: Still hard to call a winner in this one with both sides having their moments without creating anything really clear-cut.
33 mins: Essien's cross is cleared before his second attempt finds Drogba out wide. Arsenal clear and launch a counter-attack which is ended by Ballack, who goes into the book for a foul on Hleb.
32 mins: Joe Cole is booked for a forward's tackle on Van Persie. No argument with that one.
31 mins: Clichy pulls the ball back for Van Persie but Carvalho gets a little touch to put the Dutchman off. Play switches to the other end and Drogba's ball in has Arsenal hearts in mouths as it flashes across the six-yard box.
30 mins: Drogba's thumping left-foot shot is blocked by Toure.
29 mins: Essien intercepts Hleb's pass but Chelsea have to slow the play down. Eboue nicks possession off Claude Makelele and Arsenal break towards the box. In comes the cross and Adebayor has a stab at it before Eboue pokes out a foot from close range and Cudicini has to make a reflex stop with his foot.
28 mins: Drogba tries to turn Toure but his Ivory Coast compatriot shows good strength and wins the tackle.
27 mins: Joe Cole is flagged offside as Chelsea look to push forward.
26 mins: Drogba gets in behind again but Almunia comes out of his area to head the ball into touch.
25 mins: Great chance for Chelsea as Drogba latches onto Terry's clearance. He's clear of the Arsenal defenders but the bouncing ball canons off his knee and goes through to Almunia. Clumsy play.
24 mins: Fabregas dinks in a ball to Van Persie, who pulls the trigger from the edge of the box and forces Cudicini to make a diving stop.
24 mins: Joe Cole shows good pace to get in a cross but his low ball in is easy for Almunia.
23 mins: Chelsea think they've won a corner but Arsenal have a free-kick following an offside flag against Drogba.
22 mins: Kolo Toure makes an important headed clearance from the edge of his six-yard box as Chelsea look to get things going at the other end.
21 mins: Fantastic ball by Fabregas picks out Hleb on the left but he can't match that quality with his cross into the box and Chelsea break down the other end.
20 mins: Arsenal will be happy with the opening 20 minutes. They've had most of the ball and also created a couple of decent half chances.
19 mins: Cudicini comes out of his area to head clear but only to Eboue. The midfielder lobs the ball back into the box but Terry heads clear. Drogba is back on the pitch.
18 mins: Drogba comes to the sideline for treatment Nicolas Anelka starts to warm up.
17 mins: Gael Clichy does well to hold off Essien and shepherd the ball out for a goal-kick.
16 mins: Salomon Kalou's shot is charged down before it breaks back to Ballack on the angle of the area. He has options but goes for goal and Almunia makes a simple stop.
15 mins: Hleb tries to dribble past three men before the ball breaks to van Persie. He drops his shoulder to work space for a shot but blasts his effort way wide.
14 mins: The early possession stats show that Arsenal have had 66% of the play so far.
13 mins: Essien breaks into space. He has three blue shirts to aim at but his crossfield pass misses the lot and goes out for a throw. A real waste.
13 mins: Carvalho lets Alexander Hleb know he's there with a sturdy tackle.
12 mins: Ashley Cole pounces on a loose ball and drives forward but Chelsea can't make anything of it as Ballack rushes his pass.
11 mins: Fabregas passes the ball straight out of play as Arsenal try to pick a way through.
10 mins: Cesc Fabregas tries to pick out Adebayor but Ricardo Carvalho heads clear.
9 mins: Bacary Sagna bursts down the right and has the chance to play in the overlapping Eboue but overhits the ball horribly and Chelsea have a goal-kick.
9 mins: Adebayor tries to flick the ball inside for Van Persie but it strikes a Chelsea leg and deflects back to Carlo Cudicini.
8 mins: Drogba gets his head to Michael Essien's throw but it's easy for Almunia.
7 mins: Joe Cole and Lampard combine to play in Ballack but Arsenal clear for a throw.
6 mins: Michael Ballack takes the free-kick this time and his curled effort is well stopped by Manuel Almunia diving to his left.
5 mins: Drogba's free-kick is charged down by Emmanuel Eboue but he was only five yards away at the time so is booked for his early charge.
4 mins: Didier Drogba takes down a high ball and turns towards goal but is tripped by William Gallas and Chelsea have a free-kick 25 yards out.
4 mins: Another free-kick, this time against Emmanuel Adebayor.
3 mins: Joe Cole's cross from the right is headed clear by Mathieu Flamini. The ball goes back out to Cole but he's flagged offside.
2 mins: Robin Van Persie finds space down the left but his cross is cleared by John Terry.
2 mins: Frank Lampard's pass to Ashley Cole goes straight out of play.
1 min: Gallas gets his first touch and is booed by his former supporters.
1 min: Arsenal get the game in play. Following Manchester United's 3-0 win over Liverpool earlier today, victory is even more vital for both these sides now.
Pre-match: Germany international Michael Ballack returns to the Chelsea side for their
Barclays Premier League clash with Arsenal at Stamford Bridge. Michael Essien looks set to play at right-back in the only change from the team which drew 4-4 at Tottenham in midweek.
Under-fire full-back Ashley Cole lines up against his former club, while ex-Gunner Nicolas Anelka is on the bench. Arsenal name an unchanged side from the one which drew with Middlesbrough last weekend.
Theo Walcott, called into the England squad this week, is among the substitutes, while ex-Chelsea defender William Gallas also faces his former team-mates.
Teams:
Chelsea: Cudicini, Essien, Carvalho, Terry, Ashley Cole, Ballack, Makelele, Lampard, Joe Cole, Drogba, Kalou.
Subs: Hilario, Obi, Alex, Belletti, Anelka.
Arsenal: Almunia, Sagna, Toure, Gallas, Clichy, Eboue, Fabregas, Flamini, Hleb, Adebayor, Van Persie.
Subs: Lehmann, Diaby, Senderos, Bendtner, Walcott.
Referee: Mark Clattenburg (Tyne & Wear)
