The intense attention that has centered around one world-class Liverpool icon switched to another on Anfield's latest disappointing night.
Mohamed Salah has come under fire for his struggles this campaign - and was relegated to the bench for the second successive Premier League game as Sunderland arrived on Wednesday.
But it was captain Virgil van Dijk, a unmatched defensive rock as Liverpool have swept up the complete set of top honors, whose dip in performance came under the microscope during the stalemate.
Van Dijk, 34, and Salah, 33, both inked lucrative new two-year deals in the summer, with barely a Liverpool question asked at the notion of offering extensions to a veteran duo much closer to the end of their careers than the start.
Indeed, it was a reason for joy - but now there is no denying the harsh truth that standards have dropped alarmingly for both.
Liverpool have been susceptible in defence ever since head coach Arne Slot and the club's scouting department began a £450m summer overhaul that has not yet shown anything like its worth.
Simultaneously, Van Dijk has started to forfeit the sense of being untouchable he has held since his £75m switch from Southampton in January 2018.
Van Dijk has faced additional challenges by defensive partner Ibrahima Konate's loss of form, along with Milos Kerkez not finding his feet at left-back. But the renowned star has also struggled badly, as demonstrated by his desperate handball that resulted in a penalty in the significant Champions League loss to PSV Eindhoven at Anfield.
It was encapsulated in the 67th minute on Wednesday when Chemsdine Talbi gave Sunderland a well-earned lead, Van Dijk surrendering the ball before retreating and turning away on a 25-yard shot that deflected off him and looped out of the reach of goalkeeper Alisson.
For a defender of such unquestionable quality, Van Dijk has an peculiar tendency of shying away on the ball, sometimes to Liverpool's cost.
Misfortune at the conclusion, yes, but it was a situation Van Dijk invited with his unusual failure to make a decisive move, Sunderland's Talbi capitalising.
"Van Dijk surrenders possession and then he just drops off. It's the incorrect choice. He needs to go to the ball. Him not making the decision means that no one else knows what to do."
"Virgil Van Dijk last season couldn't make a mistake. Every game he was imperious, but right now he's erring and second-guessing himself."
As with Salah, a player of Van Dijk's pedigree must not be dismissed after claiming two Premier Leagues, the Champions League, the FA Cup and two EFL Cups in a stellar Liverpool career.
He has, though, looked a pale imitation of his usual dominant persona this season, with the poest ball recovery rate per game during his Liverpool career, while tackles and interceptions are also down on last season.
And, while leadership should not be Van Dijk's preserve alone in a Liverpool team full of experience, it was missing here. No-one was inspiring a team that once again looked bewildered to grab the game by the throat.
Van Dijk's subpar showing, which ended with him being used as the desperate measure of acting as an last-ditch attacker, was representative of a horribly mediocre Liverpool performance - which made Sunday's win at West Ham seem like the anomaly rather than the norm.
Slot stayed with the side that stopped a run of nine losses in 12 games at London Stadium, Salah once more watching from the sidelines.
The Egyptian came on at the start of the second half as the Kop turned to him for inspiration. It never came, with £125m Alexander Isak also quiet after scoring his first with his first league goal for Liverpool on Sunday.
Slot would have been under greater pressure had Florian Wirtz's 81st-minute shot not taken a deflection off Nordi Mukiele to set up what Liverpool hoped would be a dramatic ending.
A late scare came - but at the other end. Liverpool were only spared embarrassment in stoppage time when Federico Chiesa's superb tracking back allowed him to turn Sunderland substitute Wilson Isidor's shot off the line after he had dribbled past keeper Alisson.
Slot and his fading champions ultimately had to settle for a draw knowing it could have been worse, with Alisson lucky to turn Trai Hume's shot onto the bar in the first half before Omar Alderete headed against the post after the interval.
Liverpool were sluggish, labored and short on invention. Even the traditional late rally after the equaliser carried little conviction. Performances like this are the reason their title defence has fallen apart.
But full acknowledgment for the Reds' struggles on Wednesday must be given to Sunderland, who are being rewarded for a summer of serious ambition in the transfer market, coupled with the superb management of Regis le Bris.
The Black Cats were positive, assured and a genuine threat.
Sunderland are now sixth in the Premier League with 23 points. It is symptomatic of the manner in which they have embraced life in the Premier League that they will be frustrated they left Anfield without adding two more to their tally.
For Slot and Liverpool, it is a case of going back to basics.
Liam Sterling is a seasoned betting analyst with over a decade of experience in the online gambling industry.