Trent Alexander-Arnold admitted Liverpool had learnt from their first fixture against Atletico Madrid when the sides meet again at Anfield on Wednesday.
The Reds blew a 2-0 lead against Atleti only a fortnight ago but still claimed a 3-2 victory.
They did not make the same mistake at Anfield after scoring two early goals through Sadio Mane and Diogo Jota.
Speaking after the game, Alexander-Arnold said: "It was an important one for us. Every game is important but we stuck to our gameplan.
"We got those early goals. We have learnt our lesson from Madrid when we were 2-0 up. We were able to see it through and dominate the game.
"We know what type of team they are. They like to suck you in to their way of playing but we kept the ball, kept it moving quickly and scored two very good goals.
"Me and Mohamed Salah have a really good understanding at the moment and Jordan Henderson pushing up with Fabinho back in the team was a big help for us. We tried to get on the ball and create things. With the form our good players are in, we just tried to get the ball to them and I think we did that."
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