Cristiano Ronaldo ended his goal drought in emphatic style as Manchester United moved up to fourth in the Premier League table with a 2-0 win over Brighton at Old Trafford
Ronaldo had gone six games without scoring but blasted home before Lewis Dunk's red card dented Brighton's hopes and Bruno Fernandes' strike added late gloss to the score
"It was an amazing goal," said Man Utd interim manager Ralf Rangnick
 "Not only an important one but an amazing one
 Overall it was also a good performance from Cristiano
 Energetically he was always trying to help his team-mates
"I think in the last weeks, definitely it was the best performance by him, and a very, very important goal for us
"It was anything but a convincing performance from United overall, Jakub Moder hitting the crossbar and Danny Welbeck somehow heading over after Brighton were down to 10 men
Indeed, it had required a spectacular save from David de Gea just to keep his side on level terms at the break, clawing away a Moder header with his outstretched right hand
Brighton produced the more enterprising football in that first half with United reliant on counter-attacks, the best chance coming the way of Jadon Sancho early on
But the game turned on two losses of possession in their own half, Ronaldo punishing Yves Bissouma's mistake and Dunk fouling Anthony Elanga after his own poor touch
The win - only United's third in seven games - lifts Ralf Rangnick's side two points above West Ham and into the Champions League qualification places
 Brighton remain ninth
Ronaldo could have added to his tally in the second half
 Twice he failed to punish Brighton with his head - once thanks to a fine save by Robert Sanchez and then when he sent his attempt wide
 He was unselfish when setting up Fernandes in the second half too
The bigger concern for Rangnick will be that his team were outplayed before the red card
 In terms of coherent possession play, there was little sign of the revolution taking shape
 Fred endured a miserable night in midfield and Brighton's passing game looked superior
What Manchester United possess are those decisive players and Rangnick will at least be buoyed that the pressing game was on point - both goals and the Dunk red card all coming after winning the ball back from the opposition
 That will be the encouraging aspect of this
 But there is much work to do to claim that fourth spot in May
Under the spotlight after a dip in form, Ronaldo made the difference
 It was an error that presented him the ball with space to run into but there are few players who would have been so ruthless with that chance
 It was the moment that changed the night
"We get punished from a world-class finish by a world-class player," said Potter afterwards
 "That is what we are facing
"Ronaldo tends to play in moments now but he had a few here
 He could easily have had assists after setting up clear-cut chances for both Sancho and Fernandes
After a run of games in which Manchester United have led at half-time and then failed to win, this was a very different match
 This time, the game turned in United's favour in the second half - and that was a result of a tactical change by Rangnick at the interval
"Everyone could see after the first half, it was not an easy game," he explained
 "They are very possession-based
 It was difficult for us to get hold of the ball
 We made a change and it paid off
 In the second half, we were more aggressive and tried to intercept the ball
"The question at half-time was do we change formation or how we attack
 We decided to stick to 4-2-3-1 and told our wingers to attack their centre-backs
 That meant our full-backs had to jump to their full-backs and that paid off
 From then on, it was a different game
"Potter said VAR was wrong to get involved and upgrade the yellow card initially awarded to Dunk to a red card, and also suggested the atmosphere at Old Trafford played a part in allowing Manchester United's second goal to stand
On-field referee Peter Bankes initially showed a caution to the Brighton defender whose heavy touch saw him catch Elanga on the edge of his own box, with Adam Webster's proximity seemingly saving him from having denied a clear goalscoring opportunity
However, after consultation with VAR official Jarred Gillett, Bankes was sent to the pitchside review monitor at which point he upgraded Dunk's punishment to a red card
Later on, with Brighton pushing for an equaliser in injury time, United added a second thanks in part to a quick free-kick on the break as Alexis Mac Allister was penalised for a foul on Bruno Fernandes, a decision which Potter felt would've only been given to the home side
He said: "The red card was a yellow card live, Adam Webster was round on the cover, it was not clear and obvious that he could not get there
 If the referee gave a red card live, I could've accepted it more, but I don't understand why the VAR's getting involved in a clear and obvious error when it doesn't look clear and obvious
"I thought we were the better team in the first half
 It is disappointing how the second half turned out
 There is lots to be positive about and I am proud of the players
 There is just a little bit of frustration there because it feels like a missed opportunity
"The second goal is a foul on Alexis but it is what it is, you don't get those here
 It looked like a push but we have to accept it
"Manchester United travel to Elland Road to face Marcelo Bielsa's Leeds United live on Sky Sports this Sunday
 Kick-off is at 2pm
Brighton are in action in front of their own supporters on Saturday as they host the Premier League bottom club Burnley
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