Roberto Firmino shows his seriousness to raise the level of Liverpool against Porto

It was a sure sign that Liverpool is fully aware that things are going to the bottom of things.

Roberto Firmino only had eyes for the ball when Trent Alexander-Arnold's center touched the ball's penalty area in six minutes at the end.

The Brazilian wanted to make sure that there was no mistake, no stupid mistake. No time, then, for one of his famous finishes without a look.

This sense of professionalism, of doing the job, embodied a Liverpool performance that put them in the squares during the quarter-final match of the Champions League against Porto.

See how Firmino and Liverpool are against Porto HERE

But the watering of magic, as has become so often the case in these European nights, came from Firmino.

It does not matter that his help for the first deflected match of Naby Keita in the fifth minute is a simple free kick in the path of Guinean.

It does not matter if his goal is a few meters.

What matters is Firmino who applied these keys. And this has always been the case in recent weeks, the Brazilian has now contributed four goals and three badists in his last five outings.

His general play, especially in the second half, was a pleasure to watch, rejoicing in his central role.

That's all it takes to make a deep pbad to pbad the pbades, harbad the bottom line of Porto or just make their way into space with a clever footwork – such a pbadage in the second half purred Anfield – Firmino pleaded the player in defense to start defending more joy for the team of Jurgen Klopp in Portugal next Wednesday.

With Firmino, the first half was more akin to explosive semifinal starts in the first leg against Anfield, who were finally in favor of Manchester City and Roma, at a dead end deadlock last month. February with Bayern Munich.

Porto knew the value of the goal on the outside and, especially in the first half, caused a few alert moments for the home team.

But, unlike Bayern, Klopp will be strongly encouraged by this cleanliness. A new example of the maturity of his team since the tumultuous nights he experienced 12 months ago.

This time, thanks to Firmino on fire, they enter the second stage in a much stronger position.