Barcelona left Old Trafford with a 1-0 win over Manchester United on Wednesday night.
Although the LaLiga champions completely dominated the Champions League quarter-final first leg, they only took the lead through a Luke Shaw own goal.
Lionel Messi’s cross was headed towards goal by Luis Suarez, but Shaw deflected the ball in.
In the other game of the night, Ajax drew 1-1 at home with Juventus.
Cristiano Ronaldo netted his 125th goal in the competition, before David Neres levelled the scores.