De Gea
Over-committed for the Pedro goal but, unlike some of his teammates, showed a modicum of composure rather than wilting. 5
Valencia
Provided decent service down the right and cannot be blamed for Zlatan Ibrahimovic's and Marcus Rashford's profligacy. Only one who was at it. 6
Smalling
His worst performance in two years. Showed an appalling lack of judgement for the opener and overestimated Daley Blind's pace. 0
Bailly
Refused to be intimidated by Diego Costa and often interrupted Chelsea counter-attacks but was let down by teammates. 5
Blind
Jose Mourinho picked the wrong day to name Marcos Rojo as a substitute ahead of Luke Shaw. Perhaps Blind's poorest United performance. 1
Herrera
Busy but erratic. Lacked the discipline he displayed at Anfield and offered United's defence little security. A threat in attack. 4
Fellaini
Put himself about but United's failure to contain Chelsea meant he was quickly overwhelmed by the hosts' live wire midfielders. Predictably substituted. 4
Pogba
His stint as the playmaker was quickly abandoned and, in a game United fans would have hoped he'd grab by the lapels, Pogba didn't. 5
Rashford
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Inexplicably started on the right and switched to the left. Looked more comfortable there but often resembled a wing-back and wasted a good chance just before half-time. 5
Lingard
A needless inclusion when set up to stifle opponents, he was never going to have an effect on the left and then Valencia provided more width than him on the right. 3
Ibrahimovic
Five Premier League games running now he has squandered routine chances. It is costing United points and his place might be in jeopardy. 2
Subs
Mata Lively but indisciplined. 5
Rojo Shouldn't have been on the bench. 4
Martial Could not impact the game. 5