Liverpool dealt Barcelona a crushing 4-0 defeat in the first International Champions Cup match played at Wembley.
Jurgen Klopp's men were at their irresistible best against the floundering Liga champions, taking the lead through the brilliant Sadio Mane.
In the second half, a Javier Mascherano own goal against his former club, a Divock Origi strike and a looping stoppage-time Marko Grujic header added to a deserved scoreline that threatened to embarrass Lionel Messi and his team-mates.