Had little to do in the first half but was beaten by Michu after the break before he denied Hernandez with a close-range save.
After a straightforward first half, he found the pace of Swansea's frontline more difficult to deal with after the break and allowed Routledge to get behind him for a golden opportunity. All that was forgotten, though, when he smashed home the winner at the back post.
Like Evra, he attacked willingly and was unlucky not to finish off one fine first-half move. Coped reasonably well with the threat of Routledge on the left. Made an excellent challenge to deny Dyer a clear shot.
Looked tired in the closing stages, but until that point he had marshalled the United defence strongly despite Swansea's pace advantage.
Supported the attack aggressively down the left to good effect but in the second half the likes of Dyer and Hernandez certainly asked more questions of him.
Gave one final demonstration of his wonderful range of passing and was involved in some neat interplay around the edge of the Swansea box before he departed the Old Trafford pitch for the last time shortly after the hour mark.
Perhaps less central to United's play than he often is given the experience of the man next to him in central midfield. Sometimes had difficulty getting a handle on the the likes of Routledge and Dyer as they buzzed between the lines.
With Wayne Rooney sitting in the stands, this was something of an audition as United contemplate a possible life after the England striker. Kagawa was neat on the ball but struggled to exert a great deal of influence as United's control faded.
Stretched Swansea with his pace as part of a front four that was vibrant in the early stages but faded somewhat as the match wore on. Inches away from picking out Chicharito with a low cross.
R. van Persie
Played in the role often occupied by Wayne Rooney and kept United ticking to good effect and was at the centre of most of their best play in the first half before seeing less of the ball after half-time.
A big threat from the off. He hit the bar in the early stages before sliding a finish under Tremmel to open the scoring. As sharp as they come in the penalty area.
Given little chance to deny Chicharito from close range. Otherwise, he was not tested too often until Ferdinand crashed in an unstoppable winner.
Looked understandably rusty in his return from a serious ankle injury before he was replaced by Davies on the hour mark.
Did not give up too much in his own half, but was usually on the back foot in his battle with Evra.
Miscontrolled the ball into the path of Chicharito as United took the lead, but he can justifiably argue that he saw it late and Hernandez should have headed clear.
Dealt well with United's bright start and was able to bring the ball out of defence more easily as the game wore on.
As composed as ever in the centre of midfield, he helped Swansea grow into the game with his simple recycling of possession.
J. de Guzmán
Responsible for providing a longer range of passing to balance Britton's tight game and did well to get Swansea's wingers on the ball.
Struggled to get the better of Jones but he did get behind Ferdinand for a chance on goal which he poked narrowly wide. More effective when he drifted into central positions.
Levelled the score with a sublime flicked finish before he was substituted in the second half. Fairly peripheral for the most part, but like Chicharito he does not need many opportunities to make an impact.
Should have headed clear in the build-up to Chicharito's opening goal. He was bright on occasion in attack, testing De Gea after one jinking run in the second half, but sometimes overplayed.
Provided the cross from which Michu equalised and was consistently Swansea's biggest threat on the right flank. Denied a clear shot on goal by Jones' saving tackle.