Eddie Nketiah's 89th minute winner kept Arsenal on course for the Premier League title as they downed Manchester United late on.
The two sides both had to come from behind at different periods as the contest ebbed and flowed in north London, but ended with the Gunners firmly on top. The Red Devils remain the only team to beat the Gunners this term - and threatened to do so again when the in-form Marcus Rashford scored a sublime opener from distance.
Erik ten Hag's celebrations highlighted the importance of the clash, but their lead was short lived as Eddie Nketiah levelled proceedings. Arsenal were able to dominate the midfield and took the lead in the second-half when Bukayo Saka cut-in before scoring in impressive fashion.