45'
The teams are out for the second half, let's hope for an improvement and a few goals.
45'
 Andrei Arshavin on for Samir Nasri
45'
SECOND HALF United with the restart.
46'
A hamstring injury has forced off Nasri. It's a good job they've nothing to play for...
47'
Wilshere does well to feed Walcott inside the area, the winger turns and sees his low shot blocked.
47'
Dangerous free kick for United with Rooney poised...
48'
A well-struck curling shot from Rooney and Szczesny makes a solid save. From the rebound, Evra crashes a low drive into the side-netting.
50'
A corner to United. Rooney made a surging run forward before being halted by Koscielny. From the rebound, Clichy blocked Nani's cross.
51'
The corner is taken short, but in the end an inaccurate cross is flung into the box and the chance has passed.
52'
Bacary Sagna with a decent strike. His left-footed daisy-cutter from outside the area drifts wide of Van der Sar's goal.
53'
An absolutely outstanding cross from Nani perfectly dissects goalkeeper and defence. Hernandez makes a wonderful run and is within inches of making decisive contact.
54'
Another dangerous-looking set piece for United...
54'
Nani's bouncing efforts dips and curls wide of the post.
55'
 Antonio Valencia on for Anderson
55'
 GOAL Aaron Ramsey opens the scoring! Van Persie breaks down the right and teases Evra. He bides his time before rolling the ball back for Ramsey, who calmly slots home from 12 yards.
56'
What a big, big goal that could be in the title race. Chelsea well and truly in the hunt now.
57'
Rooney slides in Valencia who, rarely for him, slices his cross into the stands.
58'
United had just taken control of the game before Ramsey's goal set them back. It should be a very exciting final 30 minutes.
59'
United corner, Sagna sliding in on Nani...
60'
Nani takes the corner short and bursts into the box, he loses the ball, but Evra earns another corner...
61'
Vidic rises well above the defenders, but glances his header wide.
62'
 Alex Song is perhaps unfortunate to go into the book. He made a lunge on Evra and it's a United free kick.
63'
The free kick comes to nothing and Arshavin can clear.
64'
 Park into the book for a high foot on Sagna, with the Frenchman down in a bit of pain.
65'
United have a corner after Evra attempts to latch onto a divine Park through ball...
66'
Vidic gets his head to it, but Szczesny catches the looping ball.
67'
Djourou is down and looks to be in some bother. The Swiss is receiving treatment.
68'
 Sebastien Squillaci on for Johan Djourou
69'
A late tackle from Arshavin on Valencia near the half way line. Free kick.
70'
Rooney, who has been very quiet, looks to have found some space in behind Sagna, but the flag is up.
71'
United have been very poor since going behind, but credit to Arsenal. They contained the league leaders.
72'
Dimitar Berbatov's arrival is imminent...
72'
United free kick on the corner of the box for Ramsey's late challenge on Park...
73'
 Dimitar Berbatov on for Javier Hernandez
73'
The initial delivery is cleared, but Ramsey handballs as Carrick looks to cross.
74'
Another dangerous set piece...
74'
Rooney hits it, he clears the wall but Szczesny makes a comfortable save.
76'
 Fabio into the book for a wreckless slide on Ramsey. United had put Arsenal under pressure, with Valencia firing two dangerous crosses into the area.
77'
Szczesny with a strong save to deny Nani! Rooney breaks forward and has Nani on the overlap, the Portuguese receives the ball and fires a hard shot straight at the Pole.
77'
 Emmanuel Eboue on for Theo Walcott
78'
A defensive move from Wenger as he looks to try and safeguard Arsenal's lead.
79'
Rooney attempts to latch onto a punt up field but it is not going for United today.
80'
Ten minutes left for Arsenal fans, and Chelsea fans, to hang on...
81'
What a chance for Arsenal to seal the win! Wilshere led the charge, but failed to find Arshavin. Van Persie picked up the baton, but crossed to the back post, where none of his teammates were waiting!
82'
Fabio with a block on Arshavin. Arsenal free kick 25-yards from goal...
83'
Van Persie strikes the free kick well, but Van der Sar is equal to it.
84'
 Michael Carrick on for Michael Owen
85'
Arsenal are finding so much space, but they're unable to take advantage. Arshavin the latest man to put a weak cross into the area.
86'
United don't look like finding a goal, but how often have we said that?
87'
Michael Owen goes down and he's claiming a penalty after Clichy prevented him latching onto Rooney's through ball. That certainly was a tight one, I've seen them given.
88'
Again Arsenal have men over on the counter-attack and the final pass is not good enough. Into the final minute of the 90...
89'
Valencia gets to the byline and his cross is sent looping into the air after a deflection from Arshavin. Szczesny gathers and Arsenal are nearly there.
90'
FOUR MINUTES ADDED TIME
91'
Nemanja Vidic attempts a lofted ball to Antonio Valencia at the far post, the Ecuadorian stretches but he is unable to prevent the goal kick.
92'
Park onto Fabio's quick throw, his low cross is confidently gathered by Szczesny.
93'
Ramsey fouls Rooney and this is a fantastic opportunity from the free kick...
93'
Nani's free kick is into the wall and the ball is with Szczesny.
93'
FULL TIME A huge result in the title race, Arsenal win and United's lead stays at three points ahead of their clash with Chelsea next Sunday.
93'
A deserved victory for Arsenal in a match where they created the better opportunities. For United, it's a very disappointing performance and opens the door for Chelsea to retain their title.