DAVID DE GEA: Barely had a save to make but given no chance with either penalty. Denied Suarez with good reaction stop late on - 7/10.
RAFAEL: Disastrous first half - cautioned for fouling Steven Gerrard before handling for the opening penalty. Did not improve much from there - 5.
NEMANJA VIDIC: Harshly sent off for a second yellow after no apparent contact with Daniel Sturridge for the third penalty, but struggled with the strikers' movement all game - 5.
PHIL JONES: Aberration with the push on Joe Allen for the second penalty. Was given the runaround by Sturridge - 6.
PATRICE EVRA: Pinned back by Suarez and often found he was outmanned by Glen Johnson's overlapping runs - 5.
MICHAEL CARRICK: Never got a grip of midfield and saw very little of the ball. Overwhelmed by the running in behind of opponents - 6.
MAROUANE FELLAINI: Struggled to find a foothold and sat so deep it merely invited Liverpool to attack - 5.
ADNAN JANUZAJ: Played on both flanks in the first half but was hardly given the ball by his team-mates - 5.
JUAN MATA: Interchanged wings with Januzaj but was also given too little of the ball to have much of an impact. Looked lost for periods - 6.
WAYNE ROONEY: Showed plenty of movement and determination but this was too much of a one-man job even for him. Could have had a second-half penalty - 7.
ROBIN VAN PERSIE: Out of the game for long periods and when the ball did drop to him in the penalty area there was no confidence in his application. Expended a lot of energy moving into areas outside the box - 5.
TOM CLEVERLEY (on for Fellaini, 76): Sent on merely for the sake of a change but the game was already lost by then - 5.
DANNY WELBECK (on for Januzaj, 76): Introduced far too late to be expected to turn the tide - 5.
RIO FERDINAND (on for Mata, 87): Little point in his introduction - 5.
SIMON MIGNOLET: Brilliant save from Rooney late in first half. Confident throughout - 7.
GLEN JOHNSON: Given licence to roam forward almost at will and often found himself supplementing the attack -6
DANIEL AGGER: Assured performance but was rarely put under much pressure. Biggest threat came from his own goalkeeper who elbowed him in the face, but he carried on - 7.
MARTIN SKRTEL: Kept Van Persie quiet for an extended period. Not necessarily his best game but it did not need to be - 7.
JON FLANAGAN: Initially coped well with both Mata and Januzaj on his flank but an early booking made it more precarious for him and his game suffered as a result - 6.
STEVEN GERRARD: Another exemplary performance, scoring twice, hitting the post with his third penalty and generally dictating play throughout. Not put under any pressure and excelled as a result - 8.
JORDAN HENDERSON: Endless running and closing down helped his side gain a grip on midfield which they never surrendered - 7.
JOE ALLEN: In the side to help control midfield and he did his job. Covered a lot of ground and provided a platform for the three in front of him - 7.
RAHEEM STERLING: Played in the hole behind the two strikers but was able to break forward at pace. Did well in the link role - 7.
DANIEL STURRIDGE: Pace and movement caused United problems from the off. Missed an early chance but was sharp throughout, fortuitously won one penalty and was denied a second - 7.
LUIS SUAREZ: Not one of his most influential games but his ability to drift out wide pulled United's defence out of line. Caused problems with his running and deservedly scored - 7.Substitutes
PHILIPPE COUTINHO (on for Sterling, 72): Sent on to strengthen ball retention in midfield during United's only phase of possession and did enough to allow the Reds to regain control - 6.
LUCAS LEIVA (on for Gerrard, 87): Sent on for the captain with the match won - 5.
IAGO ASPAS (on for Sturridge, 90): A very late introduction - 5.