Rio Ferdinand reckons Liverpool manager Jurgen Klopp made just one error over the two legs against Barcelona.
The Reds boss masterminded an astonishing 4-3 aggregate win over the Catalan giants in their Champions League semi-final.
Klopp was forced to think outside the box what with Mohamed Salah and Roberto Firmino both out injured. And the German pulled off a tactical masterclass as Liverpool came out on top against all the odds.
Ferdinand was full of praise for what Liverpool achieved in the second leg of their semi-final on Tuesday night, but he also brought attention to one small mistake made by Klopp in the first match - his decision to bench Trent Alexander-Arnold.
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"It's the modern-day full-back, you want them to defend and get forward," the Manchester United legend told BT Sport.
"I think the range in their play, in terms of when they get into the final third, they can whip it from outside of the box, they can get into the box, they cut the ball back.
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"I just think their all-round game, both of them [Alexander-Arnold and Andy Robertson], is fantastic. It's almost a mini competition within the team – who can get the most assists.
"Maybe, in the Camp Nou, with hindsight which is a beautiful thing if you could have it, [not selecting] Trent Alexander-Arnold was the one mistake you could look back on, he could have done differently.
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"He went with Joe Gomez, out of the wilderness with a long injury and is mainly a centre-back.
"But I understand [why Gomez was picked] because of his defensive responsibilities were huge, Barca's left side is such a strong part of their game."
