So, Spurs have the momentum, but Chelsea still have a four-point lead, which counts for a lot with only six games left.
Mourinho set his team up in a similar way when United fell to a 1-0 defeat at Stamford Bridge in the FA Cup last month after being reduced to 10 men following Herrera's red card.
The keen-eyed amongst you may have noticed that Asmir Begovic made his very first Premier League appearance of the season betwixt the sticks for Chelsea as Antonio Conte's went down 2-0 against Manchester United on Sunday afternoon.
Goals from Marcus Rashford and Andre Herrera earned Jose Mourinho his first victory in three matches against Conte's Chelsea, who failed to register a single shot on target for the first time in a Premier League match since December 2015. Against Crystal Palace we didn't deserve to lose.
The 19-year-old, handed a rare opportunity to start in the No.9 role, took Antonio Conte's men to pieces with a seemingly endless stream of powerful runs in behind.
"We didn't play a good game and Manchester United deserved to win the encounter".
United's big ambition this season is to qualify for the UEFA Champions League and there are still two ways of doing that, with the Reds now fifth in the Premier League and well-placed in the quarter-finals of the Europa League.
"It's [my fault], because in this case I wasn't able to spur the right desire or motivation to play this kind of game".
Conte told his post-match news conference at Old Trafford: "The pressure is normal".
"I prefer to fight for the title instead of don't fight for the title and stay calm".
He said: "No, the satisfaction is for different reasons".
He added: "If he was subdued in his interview after the game I think you can accept that because his team just haven't performed today". No one is going to give us this league, we have to work for it like we have done for the majority of this season.
"Alonso had a virus during the night and we tried with the doctor to recover him for the game but it wasn't possible". We need to realise it's not over, we need to realise there are points to play for, and we have to dig in. I'm really happy with the boys.
Herrera said: "I didn't want to touch the ball with my hand. They are named Chelsea, but they could be named Arsenal, or Tottenham, or another one".