Manchester United
David de Gea: 6/10
Didn't have much to do on an evening where United were dominant in terms of chance creation - but clinched his 18th clean sheet during a mixed campaign and consequently will be awarded the league's Golden Glove award.
Luke Shaw: 7/10
In only his 5th league start in 2018, Shaw did fairly well and will be happy to have earned valuable minutes ahead of a pivotal stage of career development on a personal level.
Came agonisingly close to netting his first senior goal but was denied by an excellent Adrian save in the first-half and showed no signs of fatigue late on either. Encouraging.
Phil Jones: 6.5/10
It was a decent showing from Jones, who was the best from a defensive trio who were rather underwhelming when dealing with dangerous situations here.
His rather unorthodox way of challenging worked well and he also retained possession excellently - 95.2% of 42 passes was the game's highest, while he made three interceptions and clearances too.
Chris Smalling: 5/10
Poor. Although dominant in the air (six aerial duels won), that's about the only real positive from a disappointing display by the Englishman on this occasion.
Arnautovic beat him far too easily - not just once - while his passing was poor and would not have filled teammates with any confidence either. Settled down as time wore on but questions over his defensive quality are justified, not least after displays like this.
Victor Lindelof: 5.5/10
Not as poor as Smalling, but still, not a great defensive display by Lindelof - who has shown gradual signs of improvement at United this season but not enough to justify a regular starting berth.
Two clearances, a foul committed and no successful tackles nor aerial duels won show that he was rather quiet during the trickier moments you would've hoped he stood up to support his team-mates at the back.
Antonio Valencia: 6.5/10
Gave Masuaku the runaround on a handful of occasions but crucially, his final ball let him down too often here. Did not have much to do defensively and still managed to make four successful tackles, which says a lot.
Scott McTominay: 7/10
Unlucky not to score from the edge of the area in the first-half, Scott did well on his first league start since their win over Liverpool two months ago. Three successful tackles, he kept his passing largely accurate and did not shy away from the occasion either which will stand him in good stead for future seasons to come.
It's easy to understand why Mourinho rates him highly, he does the simple things well and allows others to focus more on their attacking responsibilities.
Ander Herrera: 6.5/10
Nemanja Matic was given an evening off and in his absence, the Spaniard did what he does best: hassle, hurry and press the opposition players with relentless energy.
Naturally what comes with it is fouls being committed - he made three - but also completed two tackles, two interceptions and clearances in an okay display.
Paul Pogba: 7/10
Just like Smalling, won six aerial duels and found himself engrossed in an intriguing midfield battle up against Kouyaté. Missed a few goalscoring opportunities and despite being regularly hurried in midfield, was still creating chances.
Not his best game by any means and you could also see frustration creeping in towards the end, which reached a boiling point after a needless incident with Noble.
Alexis Sánchez: 6.5/10
Given his world-class ability, the Chilean didn't do enough to warrant a higher rating. Was often dropping too deep to pose any immediate threat to West Ham's goal which meant he had to dribble past three or four to create a chance for someone else.
Six key passes and seven successful dribbles reiterate this, though disappointing end product means his efforts were essentially for nothing.
Jesse Lingard: 7/10
Just like Pogba, Jesse was creating chances for himself and came closer than most with his efforts at Adrian - forcing the 31-year-old into smart diving saves to deny his swerving strikes on two occasions. Passing was also good, completed three dribbles before being replaced by Rashford in the final 20 minutes.
Substitutes
Marcus Rashford: 6/10
Came on with just over ten minutes plus stoppages to play in an attempt to add fresh impetus to United's attacking repertoire but regularly found himself marked and frustrated by his team-mates' reluctance to pass into feet when free with his back to goal.
Ashley Young and Eric Bailly were both late changes in second-half stoppage time and did not feature enough to warrant a fair rating on this occasion.