Liverpool looked in imperious form on the night and it was Firmino who probably eliminated any hopes of a Porto comeback with is strike, after a great cross from James Milner, to go with Sadio Mane's two goals and Mo Salah's effort.
Milner was played in down the right and the Brazilian forward was on hand to tuck a first-time finish into the bottom corner.
The goal meant that all three of Liverpool's attacking trio bagged a goal on the night, and that Jurgen Klopp can probably give them a rest for the return fixture at Anfield.
Check out the goal for yourself:
14 February 2018