Chelsea have the win and are within six points of clinching the Premier League crown with six games remaining.
Chelsea 1-0 Manchester United
The ball bobbles off Falcao in the Chelsea box and Herrera goes down as he tries to retrieve the loose ball? Penalty? Nope, the Spaniard is booked for diving having stuck his own leg out to catch Cahill's challenge.
That will be that.
Chelsea repeat the trick as Willian replaces Hazard.
Mikel replaces Fabregas who takes a slow walk off the pitch to run the clock down.
Four minutes of time added on.
United are running out of time. Di Maria tries his luck from 30 yards out but his shot is bravely charged down by Terry. Moments later, Drogba wins a free kick off Januzaj to relieve the pressure on his side.
United win a corner and di Maria whips an inviting outswinger into the box. Rooney has a yard of space as he leaps, but he can't control the header and it flies over the bar.
Luke Shaw, who has been excellent in his first game back after injury, is replaced by Tyler Blackett. No appearance for Robin van Persie today, then.
Falcao denied by the post! A ball down the inside left channel finds the Colombian who easily turns Zouma. He lashes an effort towards the near post but watches on in agony as it comes back off the woodwork.
Azpilicueta comes down the left and finds Hazard on the edge of the box. The pass is just behind the Belgian however and he can't get the right connection on the ball, tapping a tame shot on goal for De Gea to save.
Terrific block from Cahill! Falcao takes a snapshot in the six yard area which looks destined for the back of the net but the England centre half gets across just in time.
United make two changes as Angel di Maria comes on for Young and Adnan Januzaj replaces Mata, who greeted to warm applause as he comes off. Which is nice.
Herrera does excellently to intercept Zouma and the ball drops to Young about 25 yards out from goal. He prods it into the path of Falcao who lets fly with a shot, but it is always veering wide of the post.
Shaw again causes problems, clipping a ball over the face of goal to Fellaini who chests it down to Rooney whose shot is deflected wide.
Oscar is booked for a poor challenge on Herrera.
United are turning the screw again. Luke Shaw does brilliantly down the left, showing terrific strength and speed to drill an inviting ball across the box. It falls to McNair whose drilled effort is saved by Courtois. Shaw picks it up again and fires another ball into the box but Mata can only head wide.
United try something more elaborate from the resulting free kick but it comes to nothing as a tame shot from Rooney is off target.
Better from United as McNair lifts a ball down the left channel to pick out Shaw's excellent run. He takes it in his stride and cuts inside, only to be clipped by Ivanovic. United are given the free kick, Ivanovic is shown a yellow card.
Chelsea denied by the woodwork! Herrera loses possession with a woeful pass Drogba is sprung clear. Smalling gets across and puts pressure on the striker, but he still manages to loop a ball over De Gea via a deflection. It looks a lost cause, but Hazard is on the end of it at the far post and acrobatically flicks it goal bound, only to be denied by the post. Ander Herrera is a lucky boy.
Drogba is shown a yellow card for a late challenge on McNair.
The start to this half hasn't been as bright. Neither team has managed to venture forward with any real menace, but that is in part due to the dilligent defending all over the pitch. Oscar provides a fine demonstration of that, tracking Shaw's run down the left and intercepting with a fine sliding challenge.
And we are back underway for the second half at Stamford Bridge.
Chelsea 1-0 Manchester United