Liverpool captain Steven Gerrard blasted his side for being "soft all over the pitch" after they lost 1-0 to Basle in Switzerland.
The home side were competitive, aggressive and quick on the counter-attack and took advantage of the Reds' Achilles heel of defending set-pieces to score through Marco Streller in the 53rd minute.
Defeat puts Brendan Rodgers' side third in the group with back-to-back matches to come against defending champions Real Madrid but it was the performance against the Swiss club which concerned Gerrard more.
FC Basel 1 Liverpool 0 - player ratings
FC Basel 1 Liverpool 0 - player ratings
1/10 Javier Manquillo
Only fleetingly got into the game in an attacking sense and not yet the surest defender. 5
2/10 Jose Enrique
Looked ok on his return to the side both in defence and as an attacking threat; created a couple of chances. 6
3/10 Dejan Lovren
Does not look comfortable playing next to Skrtel and not always the most confident when in possession. 5
4/10 Martin Skrtel
The better of the two centre-backs, though he was better to the ball by Schar at the corner from which Basel scored. 6
5/10 Steven Gerrard
Liverpool’s best performer but he is lacking true sharpness. Still seems tired after the World Cup and looks in need of a break. 7
6/10 Jordan Henderson
Did his best to provide the energy in the engine room but was largely overran, failing to make any clear chances. 6
7/10 Philippe Coutinho
Had some good periods during the game but drifted in and out of the action far too often .6
8/10 Raheem Sterling
Arguably his worst performance of the season; stuck out on the left Sterling had a great sight at goal early in the second-half but took an awful touch, losing the opportunity. 5
9/10 Lazar Markovic
As with Coutinho and Sterling he drifted in and out of the game but failed to create a meaningful chance. 5
10/10 Mario Balotelli
His only shot on target was a long-distance free-kick. While Balotelli did his best to get involved in the game, the Italian did not have one touch inside the box. Liverpool need to work out how to get the best from him. 5
"I think we created a good few openings where you would expect us to go and score but we didn't deserve anything out of this game," he told Sky Sports.
"I thought we were too soft all over the pitch. I thought they wanted it more, which is very disappointing. Conceding again from a set-piece isn't good enough, so we need to get it right. You're not going to win a football match if you keep conceding from set-pieces.
"I thought we were second-best at times tonight. I think they are an okay team, but I wouldn't say we were blown off the park or that they were fantastic.
"We made it easy for them and we wanted something out of this game - at least a draw. We came for the win, I expected us to win, so it was very disappointing.
"We will discuss it, we will analyse it like we always do. There were signs against Everton that we were coming back closer to where we wanted to be.
"We were aggressive with and without the ball against Everton but we went back to where we have been for most of the season tonight, which is not good enough."
Rodgers could not disagree with his captain's appraisal of the display.
"It was far too soft the goal we conceded and it is not the first one," said the Reds boss. It was a disappointing goal to concede with all the work we do on the training field.
"Basle have a great record against English teams but tonight was a good opportunity to get at least a point out of the game."
Liverpool created few chances and it was a tale of two strikers - the one who was here, Mario Balotelli, and the one who was not, Daniel Sturridge.
Balotelli began brightly but tailed off and at the final whistle stomped down the tunnel without so much as an acknowledgement to the travelling fans.
"I will speak to him to make sure he did that," added Rodgers.
"It is important when our supporters travel a long way we always make sure every player shows their appreciation."
Sturridge, who is reported to be closing in on a new contract at Anfield, had missed six matches with a thigh injury and Rodgers said he was unlikely to be fit for this weekend's game against West Brom so had ruled him out of the England squad.
"I spoke to Roy today. I am not sure if Daniel will be fit for the weekend so I think at this moment he won't be in the squad," said the Reds boss.
"I think over the next couple of weeks Daniel has to get up to speed and hopefully after the international break he will be able to play for us, which is the priority."
Basle coach Paulo Sousa hailed another great night for the club after previous wins over Chelsea, Manchester United and Tottenham.
"It is a big victory - at the moment the biggest for me as a coach," he said.
"To win against an historic club like Liverpool with these players it gives you the possibility to be more positive regarding the consistency of what we are looking for.
"It was a perfect evening."
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