Manchester United beat 10-man West Ham 2-0 on Monday after a controversial game at London Stadium in the Premier League.
Sofiane Feghouli was sent off by Mike Dean early on for a hefty challenge on Phil Jones, which was perhaps more worthy of a yellow, while a combination of Darren Randolph and the post kept out Antonio Valencia and Jesse Lingard's glorious chances in the first half.
Half-time substitute Juan Mata put the visitors ahead following fine work from fellow sub Marcus Rashford in the 63rd minute, before Zlatan Ibrahimovic wrapped the game up with 12 minutes remaining, finishing despite initially being found in an offside position.
The result means Jose Mourinho's side have won their last six Premier League games, moving them to within a point of fourth-placed Arsenal, who go to Bournemouth on Tuesday. West Ham, meanwhile, are 13th.
Mourinho made five changes from the side that beat Middlesbrough just two days previous, recalling centre-halves Marcos Rojo and Jones, along with Lingard, Matteo Darmian and captain Michael Carrick.
David De Gea was forced into action early on to deny Manuel Lanzini's curling effort, before the controversial talking point arrived on 15 minutes.
After taking a heavy touch in the final third, Feghouli left the ground to challenge Jones, who also came into the tackle strong. Jones won the ball, and Dean adjudged the tackle to be worthy of a red card, despite Feghouli not showing his studs in the challenge.
West Ham retreated after the red, but the visitors struggled to break them down, bar two glorious chances within a few seconds.
Getting on the end of Henrikh Mkhitaryan's cross, Valencia's effort in acres of space was just kept off the line by Randolph, before the ball rebounded out quickly to Lingard, who couldn't shape his feet to turn it on target, seeing it come off the post and into the hands of the goalkeeper.
Ibrahimovic then blazed over a half volley in space from the left angle in the area, before De Gea again kept out Lanzini with an acrobatic save from the Argentine's curling effort.
Michail Antonio should have put West Ham ahead on 61 minutes after being put through on goal by Lanzini, seeing his weak effort blocked by De Gea, and the hosts were made to pay two minutes later.
After turning at the byline, substitute Rashford found Mata 12 yards out, and the Spaniard swiped home to finally hand Manchester United the breakthrough.
Pogba went close twice in the space of three minutes, curling the ball just wide of the far post with his left foot in space, before directing the ball wide again from 20 yards with Randolph beaten.
Rashford then hit the post as Randolph spilled his effort on the goal line, before Ibrahimovic fired home from 15 yards after the ball fell to him off Herrera, despite being in an offside position.
It was an evening to forget for both West Ham and the officials, who did the hosts no favours with two controversial decisions.
Player ratings
West Ham: Randolph (6), Reid (6), Nordtveit (4), Ogbonna (5), Cresswell (5), Feghouli (5), Kouyate (5), Obiang (5), Lanzini (6), Payet (5), Antonio (6)
Subs: Carroll (5), Ayew (NA), Fernandes (5)
Manchester United: De Gea (6), Valencia (7), Jones (6), Rojo (6), Darmian (6), Carrick (6), Herrera (6), Pogba (6), Lingard (5), Mkhitaryan (6), Ibrahimovic (6)
Subs: Smalling (6), Mata (7), Rashford (8)
Man of the match: Marcus Rashford