Eddie Nketiah's last-minute goal saw Arsenal beat Manchester United 3-2 in a thrilling contest at the Emirates as the league leaders restored their five-point advantage over Manchester City
Marcus Rashford gave United an early lead with a brilliant run and strike, the forward's ninth goal in nine games in all competitions since the World Cup finished - the most of any player in Europe's big five leagues
However, Arsenal soon levelled through Nketiah, whose powerful close-range header made it 18 goals in his last 26 starts for the club
Mikel Arteta's side went ahead for the first time thanks to Bukayo Saka's fizzing drive from distance eight minutes into the second half
But United were back on level terms six minutes later as Lisandro Martinez scored his first goal for United, the Argentina World Cup winner taking advantage of Aaron Ramsdale's mistake to float a header into the net
But there was late, late drama as Nketiah touched home Martin Odegaard's mishit shot - further improving his scoring stats - and, after a tense check for offside by the Video Assistant Referee, the roof came off the Emirates
As a result, Arsenal restore their five-point lead over second-placed City, who had beaten Wolves 3-0 earlier in the day, while United - whose loss was described as a "reality check" by Erik ten Hag - remain fourth in the table and now lie 11 points off the leaders, who also have a game in hand on their title rivals
This was a battle of the Premier League's two most in-form teams and it showed in what was a pulsating contest in the capital that was a throwback to some of the fierce title meetings these arch-rivals used to have on a regular basis in the late 1990s and early 2000s
United, missing the experience of key Brazil holding midfielder Casemiro through suspension, were put under immense early pressure by the league leaders, only to weather it and then open the scoring after 17 minutes
The home team carelessly lost the ball, allowing Rashford to pick up possession midway inside the hosts' half and the England forward nutmegged Thomas Partey before finding the bottom left-hand corner of the net with a bullet of a 25-yard drive
But that lead lasted all of seven minutes as Arsenal tore into their opponents, levelling matters with a sublime goal as Granit Xhaka's gorgeous left-wing centre was headed home by another in-form England forward, Nketiah, unmarked at the far post
The first 45 minutes flew by, with both sides going close to re-taking the lead, but it was the Gunners who struck next to send the Emirates wild as Saka cut in from the right in the 53rd minute before arrowing a low drive into the far corner of the net past David de Gea's outstretched hand
Back came the visitors, though, in this thrilling end-to-end contest, with the normally reliable Ramsdale at fault as the goalkeeper palmed a corner straight to Martinez and the defender somehow managed to loop a header over Gabriel on the line and into the net
The home team, who handed Leandro Trossard a second-half debut, pushed hard for a winner in the final quarter, but a combination of the outside of the post, which denied Saka a second, and the brilliance of De Gea initially kept them at bay, until Nketiah's late intervention in one of the games of the season
"Emotional
 A lot of passion
 A lot of quality
 It doesn't get much better than that
 After the derby away to come here against that team and play the way we played, the performance that we had all over the game, and especially in the second half, it was incredible
 To win it in that way just makes it even better
"I think mentally and emotionally we were really composed
 But really determined at the same time
 We managed those moments in the game really well, we never panicked, we kept believing, we kept doing the right same things even better than before and we believed that in the end we could win
"We showed the right composure in the box on many occasions but the ball didn't go in - but fortunately enough, in the last action, we managed to win the game
"This is a team, especially when they go in front, they are extremely difficult to play
 Don't need much to create chances, love to have spaces to attack, and the moment you start to be giving longer distances, give the ball away, don't finish your actions in the final third they really punish you, but I think we handled that well
"You can talk about maturity and belief but then you have to show the quality as well and the perseverance to keep going and emotionally relax and [be] confident we can do it
 We're taking the game where we wanted and I'm really delighted, the boys deserved it
 And thank you to the crowd because it was an incredible evening to live with them
"I think we deserve where we are because the way we are playing
 But don't get confused
 It's about what we do tonight and tomorrow and there are a lot of things we can do much better
"Every week… we've been talking about pressure for the last 12 or 13 games but in the Premier League it's so difficult to win, the margins are so small, every team is really well equipped, they're going to make life very difficult for you
 We know that and we have to prepare every single day for that
"It's a joy to work with this group of players, whether they're young or old it doesn't really matter
"We've never won it, we're halfway through the season, there are other teams with much bigger squads who have already won a lot
 Let's go day by day
"Just in terms of numbers, at the moment we have 15,16 outfield players and obviously it wasn't enough and they're going to help us
 Leo [Trossard] already helped us a lot today, he showed how composed, how calm and how confident he was when he came on the pitch and helped us to win the game
""Two games head-to-head, really close
 It's hard to accept in the end, when you lose in the final stage of the game
 It can't happen
"We have to face that and learn the lessons
 We've made mistakes
 All the three goals, we could avoid them
 Normally we are better in such situations
"It's tough, that's quite clear
 You could smell it
 There were moments on the break but we have to defend much better
 We are making the wrong decisions - not one player but many players
 You concede the third goal same as the first two goals
"We started the game very well, we score the goal, we're leading and then we make mistakes that are unacceptable
 Today we have to accept, learn the lessons and move on
"The two first goals we're making so many mistakes
 It can't happen
 That is a lesson we have to take
 We will face the players with this because it can't happen
 Good teams don't make such mistakes
 Again, not one player
 We make many mistakes
"It can be [a reality check]
 Today we have to accept
 We are unsatisfied on this defending performance
 We can do better
 Last week we kept the opponent more away from our box, but if they were in the box we defend much better
 Normally we don't concede goals from corners - today, two
"The last goal so short before the end of the game
 That is not acceptable
"I've said the same words in the dressing room - if you want to win you can't make the mistakes I've just mentioned