Mega-money new arrival Romelu Lukaku gave Jose Mourinho's men the lead converting a Marcus Rashford's pass and further adding a second goal to his tally.
Paul Pogba and the young French boy - Anthony Martial both found the back of the net for the Red Devils to claim all three points from the game.
West Ham's inability to organise and keep the ball contributed to their loss - with lack of communication with new-boy Javier "Chicharito" Hernandez.
Chicharito played for Man United from 2010 to 2015 and was warmly recieved by United fans on his return to Old Trafford though he played defending another color.
Manchester United are currently ontop the English Premier League table.
I must add, the game was well controlled by the United players with more stability in the midfield thanks to Nemanja "Auto" Matic...