Chelsea, looking to stay hot on the heels of the chasing pack, were caught out again after 56 minutes when Bukayo Saka clipped home a third.
Mohamed Elneny drilled a fierce effort against the crossbar, before Chelsea pulled a goal back after 85 minutes through Tammy Abraham, who was ruled onside by VAR after initially being flagged offside.
Gunners keeper Bernd Leno produced a fine save from Jorginho’s penalty in stoppage time as Arsenal closed out a first league win since beating Manchester United away at the start of November.
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That’s a wrap
Right, that’s it from us today. We will have more reaction and analysis to today’s derby result bright and early tomorrow.
Lampard unimpressed by Werner display
“We’ll see (if he’s given a rest). Certainly the goals not going in is always something an attacking player will get judged on.
“For today Timo wasn’t giving us enough with or without the ball. Some of it we have to give him time. I keep saying the same thing because it’s a different league, but we also have to get there quickly.
“We’ll see about the tiredness – I’ll have a conversation with him. But I felt I had to make changes to change the course of the match.”
Arteta knew ‘on the coach to the game’ Arsenal were up for it
“I sensed on the coach to the game everybody was brighter and how much they wanted to win.
“There is nothing better than a Boxing Day London derby. To put in such a good performance made it very special.
“Everyone was outstanding. We had a good mix of experience and youth today and we have shown we can compete at this level. We needed the result and and the points.
“Now we have to continue like this in what was always a very important week for us.”
Lampard sends Chelsea warning
“I will take responsibility on the outside but the players have to take the responsibility because the message was clear.
“This was a dangerous game for us, a talented team, back against the wall and a London derby. We were in a good position where we could have gone second and they were in a position looking downwards. That is a dangerous combination, the players knew that and we prepared for the game.
“But if you go out and play at 60 to 70 per cent, or a few players who played at that level, you are not going to win any Premier League game.”
Lampard angry with ‘lazy’ Chelsea
“I am angry because I want us to win games,” the Chelsea boss told Sky Sports.
“We were lazy to give away a penalty, lazy to give away a free-kick that he (Xhaka) puts in the top corner and I am very, very disappointed in the way we approached the first half because some things in football are basics.
“It is not tactics or systems, it is ‘do you want to run, back your team-mate out and sprint?’ Or do you want to jog and say ‘maybe I don’t have to run’ and we took that decision instead of the right one.”
Mikel Arteta: Win could be turning point
“Obviously (it’s a) a really big win for us,” Arteta told Sky Sports. “We were really disappointed and frustrated with the results, not so much with the performances, but the results.
“The players were suffering, our fans were suffering and today is a really special day. It doesn’t get any better – Boxing Day, playing a London derby at the Emirates and winning the way we’ve done it.
“Hopefully this is a turning point and will elevate the confidence of the team because I know that they can play at this level.
“It is how consistent we are throughout the game to sustain that level and to maintain it.”
Chelsea player ratings
It was a pretty dismal day for the Blues, with not much to write home about – and one player even scoring a 3/10.
Arsenal player ratings
There were plenty of good performances from the Gunners today, with Simon Collings handing out three 8’s to Arteta’s side.
Kieran Tierney: Win was for the fans
“It is a start isn’t it? We needed that today, to give the fans something to be positive about. We have had a few bad results this season, so it is a start.
“I think we started better, we didn’t wait until we were 1-0 down to start playing and creating chances because it is always harder when you’re 1-0 down.
“We started on the front foot today and that has been the message in training over the last few weeks and today we done that.”
Full-time! Arsenal 3-1 Chelsea
What a result for Mikel Arteta!