Leicester go eight points clear, Arsenal win, Chelsea draw with West Ham
Leicester City moved eight points clear at the top of the Premier League with a 1-0 victory away to Crystal Palace.
Riyad Mahrez, who had earlier come close on two occasions, made the breakthrough on 34 minutes when he slotted home from Jamie Vardy's assist.
Palace, who last won a league game on Dec. 19, caused Leicester problems on the day and might have snatched a point when Damien Delaney volleyed against the crossbar in injury time.
Claudio Ranieri's men ultimately held on for a fourth 1-0 win in their last five games as they edge closer to an improbable title triumph.
Second-placed Tottenham will have the chance to cut Leicester's lead to five points when they host Bournemouth on Sunday.
Arsenal beat Everton 2-0 at Goodison Park to end a run of three games without a win in the Premier League.
Victory keeps alive Arsenal's faint title hopes and ensures they will end the weekend in third place.
Everton hit the woodwork through Seamus Coleman shortly after the kick-off, but within seven minutes played they were behind.
Danny Welbeck, who had earlier deflected the ball against the outside of the post, latched onto Alexis Sanchez's superb reverse pass and went around Everton keeper Joel Robles before slotting home.
Sanchez saw a penalty appeal waved away on 35 minutes but the Gunners doubled their advantage soon afterwards when Alex Iwobi, making his first Premier League start, broke free on the counter to score his first league goal.
Everton tried to spark a comeback in the second half but Arsenal's victory always appeared secure as Arsene Wenger looks to ensure a strong finish to the season.
Two goals from Cesc Fabregas preserved Chelsea's unbeaten Premier League run under Guus Hiddink as they drew 2-2 with West Ham United.
Chelsea, who last lost in the Premier League in Jose Mourinho's final game on Dec. 14, faced a tough test against a West Ham side making an unexpected push for Champions League qualification.
They fell behind on 17 minutes when Manuel Lanzini produced a stunning goal, cutting inside before bending a shot into the top corner, but the scores were level by the break thanks to a superb Fabregas free kick.
Aaron Cresswell nearly restored the Hammers' lead just before the hour mark, but his cross-shot came back off the crossbar.
Slaven Bilic's men were soon 2-1 up, though, when Andy Carroll latched onto Dimitri Payet's pass and thumped a shot past Thibaut Courtois in the Chelsea goal.
However, Chelsea secured a share of the spoils when Fabregas converted a penalty in the 89th minute after Michail Antonio was deemed to have brought down Ruben Loftus-Cheek in the area.
Norwich City moved out of the relegation zone as they beat West Bromwich Albion 1-0 for their first victory since Jan. 2.
The Canaries, who had taken just two points from their 10 games since beating Southampton, scored their first goal away from Carrow Road since Jan. 13.
After a quiet first half, Norwich broke the deadlock on 50 minutes when Matt Jarvis set up Robbie Brady to slot home.
Norwich move three points clear of the drop zone but have played two games more than relegation rivals Sunderland and Newcastle, who meet at St James' Park on Sunday.
Stoke City got back to winning ways with 2-1 win away to Watford.
Stoke, having taken just one point from their last two games, took the lead on 18 minutes when Jon Walters converted Phil Bardley's cross following good work from Giannelli Imbula.
Marko Arnautovic saw a goal correctly ruled out for offside before the break, but they extended their lead on 51 minutes when Walters set up Joselu to loft the ball over Watford keeper Heurelho Gomes.
Watford pulled one back through Troy Deeney on 86 minutes but they could not force an equaliser as Stoke secure a victory that keeps them in contention for Europa League qualification.
Federico Fernandez's first Swansea goal eased their Premier League relegation fears as Aston Villa were beaten 1-0 at the Liberty Stadium.
Fernandez had not scored in 57 appearances since signing from Napoli in August 2014 but he chose the perfect moment to open his account, even if the Argentina central defender actually knew little about it.
Villa might have lost a man when Aly Cissokho received a stern lecture from referee Mike Dean rather than a second yellow card after the left-back brought down Modou Barrow after 53 minutes. Brad Guzan failed to collect Gylfi Sigurdsson's free kick and the ball rolled into an empty net off Fernandez's right shoulder.