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Michael Owen urged Liverpool to move on quickly after witnessing their "worst performance in a long time" against Atalanta.
The Reds were beaten convincingly at Anfield by two goals to nil after a lacklustre display where they failed to muster a single shot on target.
Jurgen Klopp had made several changes to his injury-hit side, drafting three fringe men into his back four while handing Divock Origi a rare start in attack.
But Klopp's attempt to keep his side fresh backfired as they missed an opportunity to qualify for the knockout stages and surrender ground on their Group D rivals; though Owen could still see the up side.
"It was a really, really poor performance, the worst we've seen from Liverpool in a long time," Owen told BT Sport . "It's one of those where you go, 'let's put this to one side and focus on the next one.'
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"You always must look at the positives. If you are going to have a bad day, you should have it today.
"If you said at the start of the group, you need one win from the last two games, then Liverpool would have taken it. If you are going to lose one then this is not a bad one. It is not ideal but it's better than (losing) on Sunday."
Liverpool lacked any real urgency about their play, with even forwards Sadio Mane and the returning Mo Salah looking off the pace.
Perhaps the amount of changes Klopp made to his defence played some part, with summer signing Kostas Tsimikas and youngsters Neco Williams and Rhys Williams joining Joel Matip at the back.
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It's been an extremely interesting start to the season for Jurgen Klopp's men.
They got their title defence off to a shaky start as they edged out a seven-goal thriller against Leeds, before going on to conceded seven in a hammering by Aston Villa.
Virgil van Dijk's season was ended by injury in the 2-2 draw at Everton, leaving the title favourites looking far less secure at the back – especially with Alisson's injury worries too.
But there's no slowing down in what is going to be a busy campaign – with Klopp ensuring his men continue at full pace as they bid for more title glory.
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Klopp did throw on the cavalry immediately after Josip Ilicic's opener on the hour mark, introducing four senior players to try and swing the tie back in their favour.
But Robin Gosens doubled the visitors advantage moments later, allowing Atalanta to move within two points of Liverpool and throw the group wide open again.
BT pundit Rio Ferdinand said after the match: "I just hope they don't live to regret this with the way he [Klopp] flipped the team selection.
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Liverpool have made their task to qualify that little bit harder
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"He was in a position to do that but in hindsight, which you love to have, he will look at it differently. Ajax are a tough team, they have to get a result [next week].
"They didn't seem at it. A lot of new faces coming into the team who are inexperienced. It's a great education for them, sometimes you learn more when you don't win and you analyse yourself as a whole."
He added: "Klopp won't read too much into this performance – he's got big players to come back in. (They should) get over the game and get over the moment."