At the end of seven days in which cracks had started to emerge, Chelsea suffered a humiliating 3-0 defeat to Sunderland in the Premier League to add to the problems at Stamford Bridge.

The Blues would have been desperate for positive headlines at the end of a week which contained a defeat at Liverpool, a scrappy and narrow win over neighbours Fulham and the unsavoury departure of former assistant manager Ray Wilkins.

But Nedum Onuoha gave Sunderland the lead in the late stages of the first half when his brilliant, quick feet exposed abject organisation at the heart of a Chelsea defence which was missing the injured John Terry and Alex.

And things were to get worse for Carlo Ancelotti's defending champions in the 52nd minute when Asamoah Gyan completed an excellent move that had again embarrassed a makeshift central rearguard of Paulo Ferreira and Branislav Ivanovic.

Chelsea fans were already heading for the exits as the final whistle approached and so missed the worst moment of their team's performance in the 87th minute when a hopeless Ashley Cole back-pass gifted Danny Welbeck a simple tap-in.

The goals were the first Chelsea had conceded at Stamford Bridge in the league this season and they had no reply as, coupled with Arsenal's victory over Everton earlier on Sunday, their lead at the top of the table was cut to two points.

Sunderland, who arrived in London having only won one of their last 24 Premier League away matches, were superb and fully deserved a win which moved Steve Bruce's team into the top six.

Chelsea went into the game hoping to stretch their lead at the top of the table to five points but they suffered a first home defeat since March and their first at the hands of Sunderland since 2001.

The Wearsiders made a solid start and warned Chelsea inside the opening few minutes.

Struggle

Midfielder Lee Cattermole cleverly intercepted an intended pass from Ivanovic and played the ball out to Gyan on the left.

The Sunderland record signing, who scored the equaliser in their 1-1 draw against Tottenham in midweek, sent his shot just wide of the far post.

Chelsea, who beat Sunderland 7-2 last season, were struggling to make headway against Bruce's side.

Chelsea's new defensive partnership of Ferriera and Ivanovic, forced upon them by injuries to captain Terry and Alex, struggled to cope with the movement of Sunderland's changed 4-4-2 line-up.

In the 18th minute Chelsea managed to fashion their first real chance when John Obi Mikel put Nicolas Anelka in the clear, but he could not control it in time and the opportunity went begging.

Moments later Florent Malouda created an opening for Yury Zhirkov but the Russia international ended his twisting run into the area with a shot that flashed past the far post.

Chelsea midfielder Ramires sent an 18-yard header towards the top corner in the 24th minute, but Craig Gordon was able to make the save.

Unlucky

Sunderland defender Michael Turner was booked by referee Chris Foy after he brought down Didier Drogba, who continued to struggle in the wake of being diagnosed with malaria, on the edge of the penalty area in the 28th minute.

The Ivory Coast striker sent a rising free-kick just over the top of the crossbar, but Chelsea earned a corner as his effort took a deflection.

His next effort, from 35 yards after Cattermole has brought him down, went straight into the hands of Gordon.

But Chelsea goalkeeper Petr Cech kept the scores level in the 36th minute when Onuoha crossed for Welbeck to head the ball towards the bottom corner.

The Czech shot-stopper dived low to his left to turn the ball around the post.

Sunderland were unlucky not to score from the resulting corner when Kieran Richardson sent a shot across the face of the goal.

Cech was the saviour again in the 38th minute when Gyan put Welbeck through, but Cech saved with his feet.

Moments later Welbeck was brought down by Ivanovic when he got ahead of the defence and the Chelsea defender was lucky to get just a yellow card.

But after Cech made another superb double save, Onuoha dribbled through the Chelsea defence to put Sunderland in front. It was the first goal Chelsea had conceded at Stamford Bridge since they hosted Aston Villa in March.

Chelsea's afternoon got worse in the 52nd minute when Sunderland opened up their defence once more and Gyan added the second.

Jordan Henderson collected the ball from Welbeck and put Gyan clear, and the Sunderland striker made no mistake as he slipped the ball beyond Cech.

Chelsea were now rocking and unable to cope with Sunderland's quick passing and movement.

In the 59th minute Welbeck sent a curling effort just wide of the far post as the visitors threatened to add to their lead.

Chelsea had been restricted to a couple of long shots from Drogba and the boos rang out from the home fans when Malouda was replaced by Salomon Kalou.

The home side had rarely threatened in the second half and Bolo Zenden almost made it three for the visitors when he tried to divert the ball past Cech from close range in the 63rd minute.

Chelsea huffed and puffed in a bid to get themselves back into the game, but Anelka was just over with an 18-yard shot in the 86th minute.

And Sunderland made it three in the 87th minute when Chelsea defender Cole's poor back-pass was intercepted by Welbeck and the striker kept his cool to beat Cech.

Chelsea	Team Statistics	Sunderland
0	Goals	3
0	1st Half Goals	1
3	Shots on Target	9
6	Shots off Target	9
5	Blocked Shots	3
6	Corners	3
12	Fouls	14
3	Offsides	2
1	Yellow Cards	2
0	Red Cards	0
79.4	Passing Success	70.3
17	Tackles	34
64.7	Tackles Success	64.7
58.9	Possession	41.1
52.3	Territorial Advantage	47.7

Click Here for Official Teamsheet

Teams 

Chelsea  Cech, Bosingwa, Ferreira, Ivanovic, Cole, Ramires (McEachran 69), Mikel, Zhirkov (Kakuta 75), Malouda (Kalou 58), Drogba, Anelka
Subs Not Used  Turnbull, Bruma, Van Aanholt, Sala
Booked  Ivanovic
Goals 

Sunderland  Gordon, Onuoha, Turner, Bramble, Bardsley, Henderson, Cattermole (Riveros 90), Richardson, Zenden, Welbeck (Elmohamady 90), Gyan (Malbranque 83)
Subs Not Used  Mignolet, Adams, Angeleri, Da Silva
Booked  Turner, Bramble
Goals  Onuoha 45, Gyan 52, Welbeck 87

Attendance  41,072

Referee  C. Foy