Defender Joe Gomez has travelled with the squad after missing the last two matches with a knee injury while record signing Virgil van Dijk is set for his first appearance in the competition for the club he joined in January. Both (our) centre-halves and full-backs were really spot on.
While his first goal was fortunate as Sa was beaten too easily, he looked a constant threat on the break and notched a second when he followed up Firmino's shot.
It had looked like Manchester City would be the English club with the easiest route into the next round after beating Basel 4-0 in their away leg, but Liverpool went one better here against a team which are on paper, stronger opposition.
"They all performed and of course Sadio is man of the match with three fantastic goals but Roberto Firmino's work rate was again outstanding". However, Porto have never beaten the Reds in four competitive meetings.
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But while Mane grabbed the attention, Salah brought up his 30th goal of a remarkable season with a brilliantly instinctive individual effort and Roberto Firmino was also on target.
But it didn't take Liverpool long to grow into the game, as left-back Andrew Robertson fired over on his Champions League debut and Ivan Marcano's fearless block prevented Firmino from heading in.
Liverpool began to settle afterwards, and by the 20th minute mark the game was quite even.
Loris Karius was Klopp's designated goalkeeper for the group stage and after a couple of unconvincing performances early on he finished the phase conceding six times - three of which came in a madcap 45 minutes in Seville.
The Reds return to action in the Premier League against West Ham on February 24. They have won 13 of their last 15 games in all competitions.
A Cristiano Ronaldo brace helped Real Madrid come from behind to boost their hopes of once again retaining the Champions League during a pulsating last-16 3-1 victory over Paris St-Germain at the Estadio Santiago Bernabeu last night.