Hardly at fault for two wonderful goals from Van Persie and was let down by his defence for Welbeck's close-range tap-in.
Also struggled against Van Persie and was beaten with ease by the Dutchman for the third goal.
Had a troublesome time dealing with Van Persie and could have done better dealing with the second goal.
Was arguably was at fault for United's second goal when he left Valencia to deal with Van Persie, but redeemed himself afterwards with a strong performance, particularly when attacking down the left flank.
Got forward well and used his strength to force himself through the United midfield. Pushed further up the pitch as the game went on and joined an impressive attacking force.
Used his pace to great effect and played a pivotal role down the right flank, darting to and from the wing and the middle of the pitch.
Oozed confidence going forward and was an important part of an impressive Swansea midfield. Dropped deeper in the second half and dictated the play intelligently.
Constantly pressurised the United defence and muscled his way through an uncomfortable-looking back four on a number of occasions. Showed great understanding with Bony.
Formed a impressive partnership with Canas in the middle of midfield before being replaced by Wilfried Bony at half-time.
Started his first Premier League game in aggressive fashion and constantly found himself in the thick of it from then onwards. Handled the pressures well, however, and impressed in his deep role.
Had an impressive first half on the left wing before being substituted for Hernandez at half-time.
Largely untroubled, despite being beaten by an offside goal from Michu midway through the first half.
Did what was required of him, keeping the Swansea attack at bay for 82 minutes.
Attacked well down the left wing but often looked uncomfortable when defending against a Swansea side full of attacking power.
Misplaced a few passes and found it difficult to deal with Bony in the second half.
Formed a good partnership with Jones and grew in confidence and ability as the game wore on.
Was brilliant in the middle of midfield before being substituted for Rooney after an hour, and showed his ability with a great lofted ball to set up Van Persie's opening goal.
Set up Welbeck's first goal with a selfless deft pass, and played well when United broke away on a counterattack.
Had a similar game to Carrick but nonetheless did the job that was asked of him, both in attack and defence.
Largely anonymous in the middle of the field but got back when needed and helped to kickstart United's important counterattacking movements.
R. van Persie
Showed world-class technical ability to volley his side into the lead, before playing an important part in their second goal just moments later. Fired a rocket of a shot past Vorm for the third goal and was the star of the show. Constantly a thorn in the side of the Swansea defence.
Started looking uncomfortable but grew in confidence as the game wore on. Was in the right place at the right time for the second goal, which forced his side into action, and then wrapped up the win with a clever fourth goal.
Came on for Routledge alongside Bony at half-time and became an important part of a reinvigorated Swansea attacking force.
Came on for Britton at half time and immediately took his place at the forefront of the Swansea attack. Showed great understanding with Michu and scored a well-deserved late goal