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Sunderland dramatically beat Chelsea to move ahead of Newcastle United, who drew at Aston Villa, in the fight to avoid relegation from the Premier League.
Elsewhere, West Ham United suffered a damaging defeat at home to Swansea City, Bournemouth’s clash with West Bromwich Albion finished all square, and Crystal Palace bettered Stoke City.
In the day's early game, Norwich were beaten at Carrow Road by Manchester United.
Aston Villa and Newcastle produced a scoreless draw in Birmingham, live on Setanta Sports.
A point behind Sunderland in the battle to avoid the drop, Newcastle have just one game left to play, compared to their North-East rivals' two remaining fixtures.
The Magpies edged a relatively uneventful first period at Villa Park, with Papiss Cisse having the best of the half-chances.
Aleksandar Mitrovic headed two good second-half opportunities wide, as the Toon desperately chased a goal.
Rafael Benitez's men, though, could only acquire a point from the clash with already-relegated Villa.
Norwich sit 19th on 31 points, Newcastle 18th with 34, and Sunderland 17th on 35. As in Sunderland's case, the Canaries have two remaining matches.
Sunderland battled back to beat Chelsea 3-2 at the Stadium of Light.
A victory at home to Everton on Wednesday would guarantee the Black Cats' survival in the top flight.
Diego Costa opened the scoring on the quarter-hour on Wearside, slotting home a cool finish from Gary Cahill's deflected pass.
Parity at the break appeared to have been ensured by Wahbi Khazri, who produced a stunning long-range volley to beat Thibaut Courtois.
However, Nemanja Matic restored Chelsea's lead on the stroke of the interval, finishing under Vito Mannone after being kept onside from Cesar Azpilicueta's header by Patrick van Aanholt.
Sunderland fought back to level midway through the second half, as van Aanholt fed Fabio Borini, whose shot from the edge of the box found the net via a deflection off John Terry.
Three minutes after the equaliser, Jermain Defoe gave the Black Cats the lead by superbly controlling DeAndre Yedlin's deflected cross and drilling home a low strike.
Chelsea applied heavy pressure in the closing stages but Sunderland held firm to secure a potentially crucial win.
The Blues' day was worsened in stoppage time, as a foul by Terry on Khazri saw the visiting captain receive his second booking and a red card.
West Ham's slim hopes of qualifying for the Champions League were dashed by a 4-1 defeat to Swansea at the Boleyn Ground.
Midway through the first half, the Swans grabbed the lead against the run of play, as Kyle Naughton fired Ki Sung-Yueng's pass across goal for Wayne Routledge to tap home.
Swansea quickly doubled their lead through Andre Ayew, who struck from close range following Stephen Kingsley's fine, direct left-wing play.
The visitors further extended their advantage when Ki expertly applied a volleyed finish to Mo Barrow's cross in the sixth minute of the second half.
Diafra Sakho gave West Ham hope, bundling the ball home after both his own follow-up and Michail Antonio's initial header had been kept out by Lukasz Fabianski.
The Swans were able to cruise to victory, however, with substitute Bafetimbi Gomis going close before eventually adding the fourth with a good finish following an exchange of passes with Ayew.
Despite having enjoyed a fine season overall, the Hammers now look likely to finish no higher than sixth, and that position remains under threat from both Southampton and Liverpool.
Swansea's victory keeps alive the mathematical possibility of a top-half spot for the Welsh club.
Dwight Gayle netted both goals in a 2-1 fightback victory for Crystal Palace over Stoke at Selhurst Park.
Charlie Adam's decisive low finish from Marko Arnautovic's excellent pass opened the scoring.
Palace levelled matters early in the second half, as Gayle benefitted from a fine Yannick Bolasie run to side-foot in the equaliser.
After Connor Wickham had struck the woodwork with a header, Gayle sent Palace ahead with a free-kick strike, following a foul on Wickham by Ryan Shawcross.
The Potters wasted a series of opportunities late on, as Palace clung on to climb to 14th place.
Mark Hughes's men remain 10th and look likely to secure a top-half finish.
Bournemouth and West Brom drew 1-1 at Dean Court.
Salomon Rondon's header from an excellent Jonny Evans cross secured the lead for the Baggies.
A foul by Tommy Elphick on Craig Dawson gave Craig Gardner the chance to double West Brom's lead from the penalty spot prior to the break, but the midfielder's 12-yard strike was superbly tipped onto the crossbar by Artur Boruc, who also dealt well with the rebound.
Subsitute Saido Berahino missed a very good opportunity to net for West Brom before one of the Cherries' replacements, Matt Ritchie, nodded in from close range when the Baggies failed to deal with Steve Cook's long throw-in.
Dawson struck the frame of Bournemouth's goal as the visitors pressed unsuccessfully for a winner towards the death.
Bournemouth stay 16th, behind the Baggies on goal difference.