Marcus Rashford spoiled Jose Mourinho's return to Old Trafford on Wednesday, scoring twice as Manchester United beat Tottenham 2-1 to end their former manager's perfect start to his tenure at his new club.
The England forward put United in front early in the first half and converted a second-half penalty to restore their lead after Dele Alli's exquisite equaliser as Ole Gunnar Solskjaer's side leapfrogged Spurs, climbing to sixth in the Premier League table.
Spurs went into the match ahead of United after their mini-revival under their new boss, who replaced the sacked Mauricio Pochettino at the London club last month.
Struggling United had made their worst start to a season in 31 years but played with energy and adventure and deserved their win.
Smiling manager Solskjaer hailed his youthful side.
"The three points are massive for us," he told the BBC. "We've had too many draws this season and given too many points away from winning positions. It's a great lesson the last two games (Sheffield United and Aston Villa) and we came back in a great manner.
"We've started the rebuilding. We've made decisions that we had to and we're looking to build this club to be better again and I can't think short-term when I'm trying to do that."
The home side deservedly took the lead when Rashford beat Paulo Gazzaniga at his near post in the sixth minute -- the forward's 11th goal in his past 13 games for United and England.
United could easily have stretched their lead but Gazzaniga made amends by touching a thunderous Rashford shot onto the crossbar.
- Rashford threat -
It was a far cry from recent disjointed performances against Sheffield United and Aston Villa. Both of those matches ended in draws after United had taken the lead.
But despite being a clear second best, Tottenham edged their way back into the game and were on level terms six minutes before half-time thanks to an audacious piece of skill from the in-form Alli.
Serge Aurier's shot was saved and the rebound landed to Alli, whose sweet first touch took the ball away from Ashley Young and Fred. He let it bounce before shooting past David de Gea into the far corner.
The England man missed the majority of the early part of the season through injury but has bounced back in style, scoring four times in his past three matches.
United would have been disappointed to have been trailing at the break after their impressive first-half showing but they were back in front in the 49th minute when Rashford sent Gazzaniga the wrong way from the spot after being brought down by Moussa Sissoko.
United surged forward in search of another goal, with Rashford a constant threat down the left and Daniel James also looking dangerous.
Mourinho threw on unsettled midfielder Christian Eriksen in search of an equaliser as the game remained in the balance but despite some late pressure against a nervy United, Spurs left Old Trafford empty-handed.
The new Spurs boss, sacked by United last December, described his reception at Old Trafford as "nice and polite".
"It's a step back against a team that is playing with same objective as us, trying to get up the table and reach the top six," he said. "We need to keep going. We made mistakes but it's not good to be crying about them now."
Mourinho won his first three matches in charge of Spurs, with his team scoring 10 goals in the process but he has problems to sort out at the back as he targets a Champions League spot.
United are also eyeing the top four despite a big gap to close. They remain eight points behind fourth-placed Chelsea and just seven points above the relegation zone.