Ineffective during a six-month loan spell at relegated West Brom last term, Sturridge began his campaign to impress Jurgen Klopp with a second-half brace at Swansway Chester Stadium.
The cameras were focus on former Red Neil Mellor giving his pre-match thoughts on LFCTV but in the background, Karius was being tested by some shots on his goal.
The Germany global was culpable for two of Los Blancos' goals in the 3-1 win for the La Liga side, first rolling the ball straight to Karim Benzema and then letting Gareth Bale's strike from distance squirm through his hands.
"We don't use it as an excuse, we use it as an explanation", Klopp told the official Liverpool website.
"Now people could think for us it is the explanation - and for me it is 100 per cent the explanation and that's all".
'He was influenced by that knock, that is 100 per cent. "I don't rule out anything", said Shaqiri after Switzerland's Round of 16 exit in the World Cup.
Thomas Tuchel's side must sell around £50m worth of talent to avoid paying a substantial fine for breaching UEFA regulations.
Brilliant. I hope we do all it takes to get him. It's really not important what the people say.
Klopp went on to argue that Karius' mistakes could be explained by concussion, even though he did not want to use it as an excuse for Liverpool's defeat. I thought it was too late, you can not check that but now I know a concussion isn't coming and going in a day - if you have one, you see it days later.
Jones reports that Liverpool rejected another loan approach from Celtic at the weekend as they have concerns about sending him to the Scottish champions after seeing Chelsea's Charly Musonda get very little game time whilst on loan at Celtic Park last season.
"You saw Naby comes from [Red Bull] Leipzig and knows the football philosophy, as it's a similar one", he said (via The Independent).