After a thrilling 90 minutes of football, Liverpool claim the three points at Old Trafford.
Remarkably they fell behind inside the early stages as Fernandes’ strike took a deflection off Phillips before going in.
Liverpool won a penalty after Phillips was brought down, but a VAR check soon ruled it out, but the Reds still found time to score two goals before the break.
Jota’s backheel from Phillips’ shot levelled the game the ball flashed across the Portuguese as he diverts the trajectory leaving Dean Henderson with no chance.
Before first half stoppage time Firmino headed home Alexander-Arnold’s cross.
Liverpool won a free-kick. Trent Alexander-Arnold struck it deep towards the back post where Roberto Firmino had lost his man, Paul Pogba. His header again left Henderson powerless.
More worrying is United’s record defending dead ball deliveries, the worst in the Premier League with 23 per cent of goals they have conceded coming this way.
United were in disarray and the break did little to compose them. First Fred made an error and then, having recovered, Luke Shaw compounded it, caught in possession by Jota.
Firmino grabbed his second just two minutes into the second half as he pounced on an error from Henderson, before Rashford made it 3-2 with 22 minutes remaining.
United raised the tension a notch after a lovely move involving Shaw’s pass, a Bruno Fernandes dummy and a one- two between Edinson Cavani and Marcus Rashford, which ended with the younger man finishing smartly past Alisson.
United went all out for an equaliser, and it proved to be their undoing as Salah scored a breakaway goal when Nemanja Matic was caught.
Liverpool broke, Curtis Jones fed Salah and he sped away, one on one with Henderson to make it 4-2 after a quick counter-attack.
Liverpool’s victory at Old Trafford boosts their chances of finishing in the top four, with Klopp’s men now four points behind fourth-placed Chelsea.
Manchester United would have scant motivation to inflict further humiliation on their great rivals.
It would have been a friendly with teeth, not this mighty scrap. Chelsea versus Leicester, next Tuesday, is huge, too.
They have also played a game less than the Blues, and we could be in for a tense finish to the campaign.
United have now lost back-to-back league games, and they will need to return to winning ways before Leicester reduce the four-point gap between them.