Manchester United kicked off their Premier League campaign with a 4-0 win over West Ham United at Old Trafford on Sunday. The Red Devils named a strong lineup against a new-look West Ham side that had four new signings in their starting XI.It was United who drew first blood just after the half-hour mark when Nemanja Matic started a counter-attacking move that saw Marcus Rashford feed Romelu Lukaku who took it first-time to get on the score sheet.Less than 10 minutes into the second half, Lukaku doubled the lead after heading home a Henrikh Mkhitaryan free-kick. The Belgian striker even tried his best to complete his hat-trick in the second half.Anthony Martial and Paul Pogba then finished things off with two goals in the final minutes of the game to complete the rout against a Hammers side that failed to turn up.Here's how Twitter reacted to the game.Top of the league ?— Manchester United (@ManUtd) August 13, 20173 - Romelu Lukaku has now scored on his Premier League debut for three different clubs (West Brom, Everton and @ManUtd). Introduction.— OptaJoe (@OptaJoe) August 13, 2017Man United are the only club to win their #PL opening match 17 times (Chelsea 16)— Gracenote Live (@GracenoteLive) August 13, 20174 - Romelu Lukaku is the 4th @ManUtd player to score a brace on his Premier League debut (also Van Nistelrooy, Wilson, Rashford). Presence. pic.twitter.com/ychSlDR6Ox— OptaJoe (@OptaJoe) August 13, 2017Juan Mata's game by numbers vs. West Ham:88% pass accuracy3 crosses2 chances created2 tackles won2 interceptions? pic.twitter.com/zVQVp6WTBz— Squawka Football (@Squawka) August 13, 2017Hi Chelsea ????#cfc #mufc #mata #matic #mourinho #lukaku pic.twitter.com/11Od4Ck3Cp— Nataly Antar (@Nataly_Antar) August 13, 2017"Salah, Lacazette & Morata scored on PL debut for their new clubs, let see what Lukaku can do" pic.twitter.com/ZuIM38GpqS— Wicky (@Wicknes007) August 13, 2017ManUnited counter-attack much improved from last season. Mostly thanks to Lukaku (provides depth as 9) and Matic (as pivot). Fix positions.— Aldo Sainati (@aldosainati) August 13, 2017Chelsea, you've been kind. #Matic— Darren Caldeira (@darrencaldeira) August 13, 2017Nemanja Matic immense in 1st half, bossing midfield, winning the ball, launching attacks, fine passing, supporting attacks. #MUNWHU— Henry Winter (@henrywinter) August 13, 2017That moment when you realise you sold Nemanja Matic...for £40m. ? pic.twitter.com/wt3g1TBFjA— BlameFootball (@blamefootball) August 13, 2017Me watching #Matic rocking in red pic.twitter.com/vFQNS0LIFO— Arun George (@saysarun) August 13, 2017Man Utd cruising, 2-0 up, and to add insult to West Ham injury, decide to bring on their best player, Marouane Fellaini.— Paddy Power (@paddypower) August 13, 2017Pogba 4-0....The title will end up in Manchester this season.Blue or Red?Don't know— Jan Aage Fjortoft (@JanAageFjortoft) August 13, 2017Worth noting, again, that this West Ham team are awful. United have been sublime but West Ham really are poor.— Mark (@_The12thMan) August 13, 2017.@WestHamUtd pic.twitter.com/XqfdBcLL05— Walid Arsenal (@1Walid1) August 13, 2017#POGBACK... among the goals He fires in to make it 4-0 to #MUFC, a dreadful day for #WHUFC #MUNWHU pic.twitter.com/rWxhfUTdeT— Omnisport (@OmnisportNews) August 13, 2017Anthony Martial has now been directly involved in more Premier League goals (27) since 2015/16 than any other Man Utd player.16 ??11 ?? pic.twitter.com/l0Wvixk6D6— Squawka Football (@Squawka) August 13, 2017.@paulpogba scores in successive PL apps for the first time. Also scored on final day of last season against Crystal Palace pic.twitter.com/C6SpJBq3sg— Sky Sports Statto (@SkySportsStatto) August 13, 2017Paul Pogba, Romelu Lukaku, Henrikh Mkhitarya all showing up.. what a day for @MinoRaiola— Richard Hood (@r_hood09) August 13, 2017