Mikel Arteta has claimed his first win as Arsenal boss, as they kicked off the new year in style with a superb 2-0 win over Manchester United.
Pepe, and Sokratis Papastathopoulos found the back of the net for Arsenal, with the win lifting them to 10th place, four points behind United.
Meanwhile, Leicester City cut Liverpool's lead at the top of the English Premier League to 10 points after a 3-0 win at Newcastle.
Ayoze Perez, James Maddison and Hamza Choudhury scored the goals as Brendan Rodgers' side continued their fine form.
Perez put Leicester in front nine minutes from half-time with the opening goal against his old club.
Maddison then slammed in a brilliant left-foot strike three minutes later and with Newcastle down to 10 men through injury, Choudhury added a superb third. Liverpool play Sheffield United on Friday (NZ time).
Champions Manchester City are still in the title race after a 2-1 win at Everton. Two Gabriel Jesus goals were enough to give City victory, who remain third, one point behind Leicester.
West Ham beat Bournemouth 4-0 in David Moyes' first match back in charge to move out of the bottom three while bottom side Norwich are seven points adrift after a 1-1 draw with Crystal Palace.
Aston Villa won 2-1 at Burnley as Wesley and Jack Grealish scored to earn a rare away win.
Watford claimed a 2-1 win over Wolves, their third victory in four matches, thanks to goals from Gerard Deulofeu and Abdoulaye Doucoure, but remain in the bottom three.
Alireza Jahanbakhsh scored with a stunning overhead kick as Aaron Mooy and Mat Ryan's Brighton drew 1-1 with fourth-placed Chelsea, lifting the home side up to 14th.
Having scored his first goal for Brighton on December 28, Jahanbakhsh was left on the bench at home to Chelsea, who took the lead through Cesar Azpilicueta after just 10 minutes.
But Brighton improved after the break and six minutes from time, Jahanbakhsh leapt and sent an overhead kick back into the opposite corner to earn his side a deserved point.
"It is an amazing feeling," the Iranian said. "When I saw the ball, I just tried to hit it as hard as I could and the bicycle kick was the only option. I'm going to watch it a couple more times."Chelsea manager Frank Lampard was left frustrated after his side lost more ground on the top three.
"In the first half, the game was there to be won," he said. "We weren't ruthless enough. We got the goal and we had the possession. But we just didn't kill the game off."
Tottenham's top-four hopes suffered another blow with a 1-0 defeat at Southampton, Danny Ings scoring his 20th goal for the Saints in 45 matches and lifting his side to 12th.