The intense focus that has fallen upon one elite Liverpool legend shifted to another on Anfield's latest frustrating night.
Mohamed Salah has been under scrutiny for his subpar performances this season - and was consigned to the bench for the consecutive Premier League game as Sunderland came to town on Wednesday.
But it was captain Virgil van Dijk, a unmatched defensive bedrock as Liverpool have collected the array of major prizes, whose poor form came under the microscope during the stalemate.
Van Dijk, 34, and Salah, 33, both inked high-value two-year deals in the summer, with barely a Liverpool question asked at the idea of securing the futures to a experienced stars much nearer to the end of their careers than the start.
Truly, it was a cause of celebration - but now there is no escaping the stark fact that standards have dropped concerningly for both.
Liverpool have been susceptible in defence ever since manager Arne Slot and the club's transfer committee began a £450m summer rebuild that has still to demonstrate anything like value for money.
Simultaneously, Van Dijk has started to forfeit the sense of being untouchable he has held since his £75m move from Southampton in January 2018.
Van Dijk has not been helped by defensive partner Ibrahima Konate's collapse in form, along with Milos Kerkez failing to settle at left-back. But the esteemed defender has also fought his own battles, as highlighted by his rash handball that conceded 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 standing off and turning his back on a 25-yard shot that struck him and floated out of the reach of goalkeeper Alisson.
For a defender of such undoubted greatness, Van Dijk has an peculiar tendency of shying away on the ball, sometimes to Liverpool's disadvantage.
Bad luck at the conclusion, yes, but it was a situation Van Dijk invited with his unusual failure to take charge, Sunderland's Talbi seizing the moment.
"Van Dijk gives the ball away and then he just retreats. 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 was faultless. Every game he was imperious, but right now he's slipping up and second-guessing himself."
As with Salah, a player of Van Dijk's stature must not be dismissed after claiming two Premier Leagues, the Champions League, the FA Cup and two EFL Cups in a glittering Liverpool career.
He has, though, looked a faded version of his usual dominant persona this season, with the lowest recovery numbers per game during his Liverpool career, while key defensive stats are also down on last season.
And, while leadership should not be Van Dijk's sole responsibility alone in a Liverpool team packed with experience, it was absent here. No-one was inspiring a team that once again looked lost to grab the game by the throat.
Van Dijk's difficult night, which ended with him being used as the emergency option of acting as an makeshift forward, was indicative of a deeply underwhelming Liverpool performance - which made Sunday's win at West Ham seem like the outlier rather than the rule.
Slot stayed with the side that halted a run of nine losses in 12 games at London Stadium, Salah once more observing from the sidelines.
The Egyptian was introduced at the start of the second half as the Kop turned to him for inspiration. It was not forthcoming, with £125m Alexander Isak also anonymous after opening his account with his first league goal for Liverpool on Sunday.
Slot would have been under increased scrutiny had Florian Wirtz's 81st-minute shot not taken a deflection off Nordi Mukiele to set up what Liverpool hoped would be a grandstand finish.
Late drama came - but at the other end. Liverpool were only saved from humiliation in stoppage time when Federico Chiesa's excellent defensive sprint allowed him to turn Sunderland substitute Wilson Isidor's shot off the line after he had beaten keeper Alisson.
Slot and his underperforming defending champions ultimately had to settle for a draw knowing it could have been worse, with Alisson fortunate 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 lethargic, labored and short on invention. Even the customary late surge after the equaliser carried scant belief. Showings like this are the reason their defense of their crown has fallen apart.
But huge credit for the Reds' struggles on Wednesday must be given to Sunderland, who are being rewarded for a summer of clear intent in the transfer market, coupled with the fine work of Regis le Bris.
The Black Cats were proactive, confident and a genuine threat.
Sunderland are now sixth in the Premier League with 23 points. It is telling of the manner in which they have adapted to life in the Premier League that they will be unhappy they left Anfield without adding two more to their tally.
For Slot and Liverpool, it is back to the drawing board.
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