Sheffield United had not won away from Bramall Lane all season in the league and are struggling at the foot of the division but stunned the flat-looking Reds when they went ahead after 23 minutes with a goal from Kean Bryan.
Chances for the Reds were few and far between but we rallied briefly in the second half when captain Harry Maguire headed in an equaliser after 64 minutes.
But the expected onslaught didn’t materialise and the Blades wounded the Reds again in the 74th minute when they scored a second through Oliver Burke.
There were no comeback heroics from Ole Gunnar Solskjaer's side and the costly defeat brought to an end United's 13-game unbeaten in the Premier League.