Eddie Nketiah has scored twice against his former club to keep Arsenal on course for the Champions League, as 10-man Leeds United plunged into the Premier League relegation zone with a 2-1 win.
But while Leeds had a miserable Sunday in the fight for survival, fellow fighters Everton held on to a 2-1 win over Leicester to give themselves renewed hope of avoiding the decline.
In the other early game of the day, West Ham wiped out their European exit and resumed the race for the top six with a thumping 4-0 win over Norwich.
At the Emirates Stadium, Nketiah took advantage of a mistake by Illan Meslier to put the Gunners ahead and added a second just 10 minutes into the game.
Leeds was dealt another massive blow when captain Luke Ayling marked his 500th career appearance by being sent off for a reckless attack on Gabriel Martinelli in the 27th minute.
Diego Llorente pulled a goal back in the second half, but Arsenal were four points clear of fifth-seeded Tottenham, while Jesse Marsch’s side fell into the bottom three after Everton’s win lifted the Toffees to 16th in the table. .
Everton have 35 points, one more than Burnley and Leeds, and still have a game in hand over their relegation rivals.
Vitalii Mykolenko’s volley from the edge of the field gave Everton the lead, but Leicester tied the score in the 11th minute after a poor defense enabled Patson Daka to run on and beat goalkeeper Jordan Pickford.
Everton re-took the lead on the half hour mark when Mason Holgate nodded after goalkeeper Kasper Schmeichel saved a header from Richarlison.
At Carrow Road, West Ham licked their wounds after their painful defeat in the Europa League semi-final against Eintracht Frankfurt on Thursday.
But Norwich, doomed to relegation after a defeat at Aston Villa last weekend, offered no challenge as goalkeeper Tim Krul had a nightmare.
Manchester United’s 4-0 defeat at Brighton has left the door open for West Ham to take sixth place and re-qualify for the Europa League next season.
They are now three points behind United, with a game in hand and a superior goal difference.
Krul was heavily guilty of goals from Said Benrahma and Mikhail Antonio to leave his team 2-0 after half an hour.
West Ham were third at halftime thanks to Benrahma’s second and Manuel Lanzini added the fourth from the penalty spot.