The intense focus that has fallen upon one elite Liverpool great turned to another on Anfield's most recent disappointing night.
Mohamed Salah has been under scrutiny for his subpar performances this season - and was placed on the bench for the consecutive Premier League game as Sunderland visited on Wednesday.
But it was skipper Virgil van Dijk, a peerless defensive bedrock as Liverpool have swept up the complete set of major trophies, whose dip in performance took center stage during the draw.
Van Dijk, 34, and Salah, 33, both inked high-value two-year deals in the summer, with not one Liverpool question asked at the idea of securing the futures to a experienced stars much closer to the end of their careers than the start.
Indeed, it was a moment of optimism - but now there is no avoiding the brutal reality that performance has dipped worryingly for both.
Liverpool have been vulnerable in defence ever since head coach Arne Slot and the club's transfer committee began a £450m summer refit that has still to demonstrate anything like a good return.
Simultaneously, Van Dijk has started to shed the aura of invulnerability he has carried since his £75m move from Southampton in January 2018.
Van Dijk has not been helped by defensive partner Ibrahima Konate's dramatic dip, along with Milos Kerkez failing to settle at left-back. But the great Dutchman has also fought his own battles, as proved by his panic-stricken handball that conceded a penalty in the significant Champions League loss to PSV Eindhoven at Anfield.
It was exemplified in the 67th minute on Wednesday when Chemsdine Talbi gave Sunderland a well-earned lead, Van Dijk losing possession before standing off 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 curious trait of turning away on the ball, sometimes to Liverpool's detriment.
Misfortune at the finale, yes, but it was a situation Van Dijk provoked with his unusual failure to act decisively, Sunderland's Talbi seizing the moment.
"Van Dijk gives the ball away and then he just retreats. It's the wrong decision. 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 commanding, but right now he's making mistakes and second-guessing himself."
As with Salah, a player of Van Dijk's stature must not be written off after winning two Premier Leagues, the Champions League, the FA Cup and two EFL Cups in a illustrious 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 preserve alone in a Liverpool team brimming with experience, it was lacking here. No-one was inspiring a team that once again looked clueless to grab the game by the scruff of the neck.
Van Dijk's poor display, which ended with him being used as the emergency option of acting as an makeshift forward, was indicative of a distinctly poor Liverpool performance - which made Sunday's win at West Ham seem like the outlier rather than the norm.
Slot persisted with the side that stopped 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 pinned hopes on him for inspiration. It failed to materialize, with £125m Alexander Isak also quiet after getting off the mark with his first league goal for Liverpool on Sunday.
Slot would have been under even more pressure had Florian Wirtz's 81st-minute shot not deflected in off Nordi Mukiele to set up what Liverpool hoped would be a thrilling finale.
A late scare came - but at the other end. Liverpool were only avoided defeat in stoppage time when Federico Chiesa's outstanding recovery run 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 accept the point knowing it could have been worse, with Alisson blessed 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, unimaginative and short on invention. Even the typical final push after the equaliser carried scant belief. Displays like this are the reason their defense of their crown 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 excellent coaching of Regis le Bris.
The Black Cats were adventurous, self-believing and dangerous.
Sunderland are now sixth in the Premier League with 23 points. It is symptomatic of the manner in which they have adapted to life in the Premier League that they will be disappointed 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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