RUBEN AMORIM has the worst win percentage of any Manchester United manager since World War II – adding yet another miserable record to his torrid spell in charge of the club.Man Utd fell to another defeat under Amorim on Sunday when they were easily beaten 3-0 by neighbours Man City, who subsequently leapfrogged them in the Premier League table.Shutterstock EditorialRuben Amorim has yet another unwanted record from his time at Manchester United[/caption]PAMan Utd were beaten 3-0 by Man City on Sunday[/caption]After just five games in all competitions, United have already suffered an embarrassing defeat to League Two side Grimsby, been battered by their local rivals and needed a 97th-minute penalty to squeeze past relegation favourite Burnley at home.The pressure has never been more intense on Amorim, who despite the shocking form, is still insisting on playing his style of football and not adapting to the opposition.But his results are now at an undeniably poor level, after stats provided by Opta showed that he now has the worst win percentage of any Man Utd boss who has taken charge of 25 or more games in the past 80 YEARS.Amorim has managed to come out on top in just 36.2 per cent of his games in charge of the club.To put that into perspective, Erik ten Hag – the man who Amorim replaced in the Old Trafford hot seat – boasts a 54.7 per cent win percentage from his time at United.While David Moyes, who was sacked in his first season in charge, managed a win percentage of 52.9 per cent.Compared to Sir Alex Ferguson‘s superb 59.7 per cent win percentage, Amorim’s record looks humiliating.You have to go all the way back to Wilf McGuinness, who managed United between 1969 and 1970, to find a remotely close record. GettyEven Louis van Gaal boasts a better record than Ruben Amorim[/caption]PAErik ten Hag, who Amorim replaced at United, has far superior numbers to the current boss[/caption]BEST FREE BETS AND BETTING SIGN UP OFFERSMcGuinness won 33 of his 91 games as United boss, meaning his win percentage of 36.3 per cent is still marginally better than Amorim’s.While Frank O’Farrell, Man Utd manager from 1971-1972, pips Amorim with his 36.6 per cent win percentage. Other notable names that did better at the Theatre of Dreams include Ralf Rangnick, Louis van Gaal and Ole Gunnar Solskjaer.But forget isolating Amorim’s shocking form to Man Utd comparisons, the most worrying thing for United fans is the way he stacks up against his current opponents.Since arriving in Manchester last November, Amorim’s United have the worst record of any Premier League club still in the division.Of the 17 ever-present Premier League clubs excluding those promoted and relegated, his struggling Red Devils are BOTTOM of the table.They have picked up a pitiful 31 points from 31 games, including just eight wins.Man Utd ratings vs Man City: Mbeumo forces wonder save from Donnarumma but that’s as good as it getsMANCHESTER UNITED’S miserable start to the season continued after they were brushed aside by neighbours Man City.Ruben Amorim’s side were unable to come back with a bang after the international break, falling to a 3-0 away defeat.Phil Foden opened the scoring for City after just 18 minutes with a glancing header that gave Altay Bayindir – keeping his spot despite the arrival on Ssnne Lammens – little chance to stop.While Erling Haaland did what he does best by bagging a second-half brace to put the hosts out of reach.United now sit 14th in the table, with City leapfrogging them with their second win of the season.Here’s how SunSport’s Katherine Walsh rated each Man Utd players performance…That is the exact same points tally as Tottenham but with a worse goal difference on -13 to -4.Things don’t seem to be turning around this term either, with United now just picking up four points from their opening four Premier League games – marking their worst start to a league campaign since 1992-93.But Amorim is steadfast in his approach, insisting he will have to be sacked before he changes his 3-4-3 formation.Speaking after Sunday’s defeat, Amorim said: “It is not a record we should have at Manchester United. I accept that but I am not going to change.“When I want to change my philosophy I will change but, if not, you have to change the man.“We will talk about that every game we lose. I have played my way and I am going to play my way until I want to change.”