The glaring focus that has fallen upon one world-class Liverpool great switched to another on Anfield's fresh frustrating night.
Mohamed Salah has been under scrutiny for his struggles this season - and was placed on the bench for the second successive Premier League game as Sunderland came to town on Wednesday.
But it was leader Virgil van Dijk, a exceptional defensive foundation as Liverpool have collected the complete set of top honors, whose struggles came under the microscope during the stalemate.
Van Dijk, 34, and Salah, 33, both inked new lucrative two-year deals in the summer, with barely a Liverpool eyebrow raised at the idea of handing contracts to a seasoned pair much approaching the end of their careers than the start.
Truly, it was a cause of celebration - but now there is no avoiding the brutal reality that levels have fallen worryingly for both.
Liverpool have been susceptible in defence ever since head coach Arne Slot and the club's recruitment team began a £450m summer overhaul that has yet to prove anything like a good return.
Simultaneously, Van Dijk has started to shed the aura of invulnerability he has held since his £75m move from Southampton in January 2018.
Van Dijk has received little support by fellow defender Ibrahima Konate's dramatic dip, along with Milos Kerkez struggling to adapt at left-back. But the great Dutchman has also had significant difficulties, as demonstrated by his desperate handball that gave away a penalty in the heavyweight Champions League loss to PSV Eindhoven at Anfield.
It was exemplified in the 67th minute on Wednesday when Chemsdine Talbi gave Sunderland a deserved lead, Van Dijk surrendering the ball before standing off and turning away on a 25-yard shot that struck him and drifted out of the reach of goalkeeper Alisson.
For a defender of such proven caliber, Van Dijk has an unusual habit of turning away on the ball, sometimes to Liverpool's disadvantage.
Ill fortune at the conclusion, yes, but it was a situation Van Dijk courted with his unusual failure to act decisively, Sunderland's Talbi seizing the moment.
"Van Dijk loses the ball 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 making mistakes and second-guessing himself."
As with Salah, a player of Van Dijk's stature must not be dismissed after winning two Premier Leagues, the Champions League, the FA Cup and two EFL Cups in a glittering Liverpool career.
He has, though, looked a shadow of his usual commanding presence this season, with the worst recoveries 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 full of experience, it was lacking here. No-one was rousing a team that once again looked bewildered to take control 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 emergency striker, was indicative of a distinctly poor Liverpool performance - which made Sunday's win at West Ham seem like the exception rather than the norm.
Slot persisted 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 came on at the start of the second half as the Kop looked to him for inspiration. It never came, 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 thrilling finale.
Stoppage-time tension came - but at the other end. Liverpool were only spared embarrassment 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 struggling title-holders ultimately had to settle for a draw 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 sluggish, unimaginative and short on invention. Even the customary late surge after the equaliser carried little conviction. Performances like this are the reason their defense of their crown has collapsed.
But full acknowledgment 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 superb management of Regis le Bris.
The Black Cats were positive, confident and a genuine threat.
Sunderland are now sixth in the Premier League with 23 points. It is indicative 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 time for reflection.
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