A moment of quick-thinking and 'pure intelligence' from Trent Alexander-Arnold has helped Liverpool pull off one of the Champions League's greatest comebacks on a magical night at Anfield.
After a disappointing first leg at the Nou Camp that saw Barcelona scored three without reply, Jurgen Klopp's men had it all to do in the return leg on Tuesday evening.
But Liverpool did exactly that as Divock Origi got them off to a flying start before second-half substitute Georginio Wijnaldum scored twice in two minutes to bring the aggregate score back to 3-3.
Trent Alexander-Arnold has been hailed for his 'moment of genius' against Barcelona
However, the moment of the match came 11 minutes from time when the Reds won a corner.
As Barcelona set themselves up to defend the corner, Alexander-Arnold set the ball down and analysed his options.
The English right back began to walk away from taking the set-piece to allow Xherdan Shaqiri to whip one in.
But in a flash of brilliance, Alexander-Arnold quickly turns back to take the corner and finds an unmarked Origi in the centre of the box who then manages to score Liverpool's fourth goal to send them into the Champions League final.
After the full-time whistle, the 20-year-old was asked it was something he has been practicing. The full back insisted that it was pure instinct to find his Belgian team-mate all alone in a Barcelona box.
He said: 'It was just instinctive, one of them moments where you see the opportunity, Div [Origi] was switched on to finish it off. Came at him a bit fast but he’s a top player.'
The goal was hailed online as past and present professionals were full of praise for Alexander-Arnold.
Cesc Fabragas tweeted: 'Alexander-Arnold, 20 years old. People will tell me it’s bad defending, I’m telling you it’s pure intelligence and vision.'
Meanwhile, Jermaine Jenas wrote: 'Didn’t think I could be anymore impressed by Trent Alexander Arnold such a brilliant young intelligent footballer!'
Liverpool manager Jurgen Klopp admitted that he didn't really see the goal before substitute Ben Woodburn asked what had happened.
In his post-match interview, Klopp was asked about Alexander-Arnold's 'moment of genius', to which he replied: 'Oh my god 100 per cent. We had to be serious. But we needed to be cheeky as well. It was necessary.
'Barcelona defend predictable things well. But you need to be unpredictable at moments. I saw the ball flying in the goal, I didn’t see the corner. I didn’t see who took the corner. Ben Woodburn said "what happened?"'
BT Sport pundits Rio Ferdinand, Michael Owen and Robbie Fowler also admitted that they didn't see it coming as Gary Lineker admitted that he still couldn't quite pick out the pass after watching the replay four times.
Ferdinand said: 'Jurgen [Klopp] said himself he didn’t really see it. If I’m being honest I never. I saw the ball going into the box, I didn't understand the circumstances.
'He is working off instinct. For a young player to be able to do that at this age and at this level under that pressure is immense.'
Owen added: 'Everybody’s looking at the ball that’s on the pitch. Then it gets passed off it, and if anybody is looking at the corner Alexander-Arnold is walking away so they probably turn away again.
'Actually, Divock Origi has turned away as he’s hitting it, it’s only when it’s
