Liverpool 4-0 Barcelona: 3 Reasons why Liverpool beat Barcelona to complete a stunning come back

Liverpool staged one of the greatest comebacks ever seen in the UEFA Champions League as they beat Barcelona 4-0 on the day and 4-3 on aggregate, thanks to braces from Divock Origi and Georginio Wijnaldum each.

Coming to the match, Liverpool made Barcelona look like schoolboys as dominated the match from start to finish. Origi started the home side's scoring in the first 10 minutes and it looked like Barcelona were finding it difficult to string a couple of passes together.

They did attack every now and then in the first half but Liverpool were always having better chances than them. The first half ended with all to play for. In the second half, Liverpool started like a house on fire as the second half substitute, Wijnaldum, put them 2-0 in front. Almost immediately after that, Wijnaldum headed it in to make it 3-0.

The fourth goal came from the corner which was scored by Origi and that was due to some dreadful defending from Barcelona. In the end, Barcelona couldn't find a way through and for the second time in two years, they were the wrong end of a stunning comeback.

In this slideshow, we state the 3 reasons why Liverpool won the game:

#3 Wasteful Barcelona and Alisson Becker's saves

Liverpool v Barcelona - UEFA Champions League Semi Final: Second Leg

When Valverde will look back upon this game, he would rue those missed chances from Barcelona, especially in the first half. Lionel Messi found the fists of Becker early on when he should have found the top corner and Phillipe Coutinho also couldn't find the back of the net from a promising position inside the box.

Jordi Alba had a one on one opportunity late in the first half which he couldn't put away and even Luis Suarez missed a one on one opportunity in the second half. It is not as if Barcelona didn't have chances, it is just that they couldn't take them.

Another direction from which this could be looked at is Alisson saving everything coming his way. He saved two one on ones and both of those were magnificent saves. This match just proved the difference that Alisson has brought in this team and proved why he is regarded as the best in the business.

#2 Ernesto Valverde got his tactics wrong

What a day to get your tactics wrong, isn't it? Valverde got everything wrong on the day, starting with the team selection. Why was Phillipe Coutinho started is the biggest question every Barcelona fan would be asking.

In the first leg, we clearly saw how beneficial it is to start both Nelson Semedo and Sergi Roberto together as they kept Sadio Mane quite, but Valverde decided to start with Roberto alone and Mane made the Spanish full-back run all night.

Another huge tactical error that Valverde made was playing out from the back. When Liverpool were pressing Barcelona high, the away side were still trying to play out from the back and two of Liverpool's three goals came from the errors made by Barcelona doing just that.

The Blaugrana should have cleared their lines more often as Liverpool was the team chasing but they didn't and that cost them dearly.

#1 The 'Gegenpress' and heavy metal football

The biggest reason why Liverpool won this game was because of their style of play, the one instilled in the club by Jurgen Klopp. Klopp's style of play is based on pressing the opposing team and running more than their opposition which Liverpool did and everyone knows how many problems the famously known 'Gegenpress' caused Barcelona.

Another term that is used with Klopp's style of play is heavy metal football which means winning every duel, fighting for every loose ball, running for every lost cause, hard tackles and getting under the skin of the opposition. Every player on that pitch wearing the red did that. They were running as if their life depended on it and that passion and heart are commendable.

Klopp has given this club identity and I can safely say that this Liverpool team is something very special.