Dominic Solanke opened the scoring for Tottenham in the 15th minute with a clever finish. Spurs scored two more goals in the first eight minutes of the second half, with Solanke completing his double, while Dejan Kulusevski scored the other.
Man United manager Ruben Amorim responded by making three changes, bringing on Joshua Zirkzee, Amad Diallo and Kobbie Mainoo, with Zirkzee making an immediate impact as Spurs suddenly made things difficult.
In the 63rd minute, Bruno Fernandes took advantage of goalkeeper Fraser Forster's mistake and made a favorable cross for Zirkzee to tap the ball into an empty net. Less than 10 minutes later, Forster continued to make an impression with a slow clearance, and Amad's effort to steal the ball brought the second goal for the away team.
However, Man United goalkeeper Altay Bayindir also made a fatal mistake when he let Son Heung-min score a corner kick, thereby helping the home team restore their 2-goal lead.
Jonny Evans headed in United's third goal from Amad's corner in the fourth minute of stoppage time, but Tottenham held on for the win and moved closer to their first title since 2008. The dramatic win also eased the pressure on manager Ange Postecoglou.
"I've always said my ambition is to build a team and a club that has a chance of lasting success. I don't think winning a trophy will do that, but it will help that cause.
It can certainly help the process, but it's not the be all and end all if it doesn't fit those factors. What are those factors? Is the team performing well across all competitions and how is the squad developing. Is it stable, is it consistent?" - said the Australian strategist.
Overall, the "Roosters" still appear to be unstable, with the chaotic second half against Man United being proof. The question is, is Postecoglou's uncompromising attacking style suitable for English football? And simply put, Spurs fans are extremely desperate with their team's performance in the Premier League.
Difficulties still await Tottenham ahead, but reaching the Carabao Cup semi-finals will certainly boost the spirit of Postecoglou and his students.