Jurgen Klopp saluted the 'perfect reaction' of his substitutes after Liverpool beat Inter Milan 2-0 in Italy.
After a scoreless first period, Klopp withdrew Diogo Jota for Roberto Firmino due to an ankle injury before Jordan Henderson, Naby Keita and Luis Diaz were introduced around the hour mark.
After a sustained spell of pressure from Simeone Inzaghi's side, the Reds subs helped turn the game back the way of Klopp's team before Firmino headed in the opener from a corner.