Chelsea manager Jose Mourinho offered some words of comfort to Swansea manager Garry Monk after the rout.

“There are matches that go away from our control and as managers we can’t do much. I can understand that he was frustrated but the only thing I can say is that it’s better to lose one match 5-0 than to lose five games 5-0.

“I’m sure he will get a reaction from his team.”

Chelsea had lost two and won only one of their previous four away games, but they went ahead inside a minute at Swansea when Oscar drilled a shot into the bottom-left corner after Gylfi Sigurdsson conceded possession.

Eager to atone, Sigurdsson hit the crossbar within seconds of the restart, but Chelsea doubled their lead in the 20th minute when Cesc Fabregas teed up Costa to slot home.

Costa punished a mistake from Federico Fernandez to claim his 17th goal of the campaign in the 34th minute and two minutes later he teed up Oscar to finish with the inside of his right foot.

A dominant first-half showing also saw Willian hit the woodwork twice, and although Chelsea took their foot off the pedal after the change of ends, Andre Schuerrle added a late fifth from Branislav Ivanovic’s cross.

United’s Fellaini replaced Juan Mata at the interval before manager Louis Van Gaal introduced 19-year-old striker Wilson for centre back Jonny Evans, and within seconds United were in front against QPR.

Antonio Valencia motored to the byline on the right and cut the ball back for Fellaini, who took a touch before lashing a languid shot into the net.

Wilson sealed victory in injury time, finishing at the second attempt after his initial shot was repelled by Robert Green.

QPR boss Harry Redknapp on speculation over his future, said: “All the speculation that I was going to lose my job if we lost this game, I spoke to [owner] Tony Fernandes this week and he certainly never said anything like that to me.

“If we can get another striker in on loan then we’ll stay up no problem.”

Christian Eriksen claimed an 88th-minute winner as Tottenham Hotspur closed to within two points of the top four by winning 2-1 at home to Sunderland, who gave striker Jermain Defoe a debut against his former club.

Sebastian Larsson appeared to have earned Sunderland a point with a curling free kick after Jan Vertonghen’s deflected shot had put Spurs ahead, only for Eriksen to poach a winner from Andros Townsend’s cross.

Improving Liverpool climbed to seventh place, four points below the Champions League places, after winning 2-0 at Aston Villa.

With Steven Gerrard rested, Liverpool took a 24th-minute lead when Fabio Borini slid in to convert Jordan Henderson’s delicate cross before Rickie Lambert added a second with 11 minutes to play.

Crystal Palace continue to benefit from the impact of new manager Alan Pardew, coming from two goals down to claim a stirring 3-2 win at fellow relegation contenders Burnley.

Efforts from Ben Mee and Danny Ings put Burnley 2-0 up after 16 minutes, but Palace drew level through goals from Dwight Gayle and Jason Puncheon before Gayle netted an 87th-minute winner.

Victory sent Palace four points clear of the relegation zone and left Burnley one place above the bottom three.

Bottom club Leicester City remain three points adrift of safety after Bojan Krkic’s 63rd-minute strike earned Stoke City a 1-0 win at the King Power Stadium.