After the Blaugrana suffered one of the worst defeats in the club's history, Goal looks at five major factors that contributed to their humiliation
For the second consecutive season, Barcelona have been eliminated from the Champions League following a catastrophic second-leg collapse.
At the quarter-final stage last year, Ernesto Valverde's Barca were thrashed 3-0 by Roma in Italy after winning the first leg 4-1 at Camp Nou.
This year, the Catalans threw away a 3-0 semi-final first-leg lead against Liverpool as they were thumped 4-0 at Anfield in the return.