The glaring spotlight that has fallen upon one elite Liverpool legend switched to another on Anfield's latest desperate night.
Mohamed Salah has faced examination for his subpar performances this campaign - and was consigned to the sidelines for the second straight Premier League game as the Black Cats came to town on Wednesday.
But it was leader Virgil van Dijk, a peerless defensive rock as Liverpool have collected the complete set of major prizes, whose poor form came under the microscope during the 1-1 draw.
Van Dijk, 34, and Salah, 33, both agreed to new lucrative two-year deals in the summer, with barely a Liverpool eyebrow raised at the notion of offering extensions to a experienced stars much nearer to the end of their careers than the start.
In fact, it was a moment of optimism - but now there is no escaping the brutal reality that levels have fallen concerningly for both.
Liverpool have been vulnerable in defence ever since head coach Arne Slot and the club's scouting department undertook a £450m summer rebuild that has still to demonstrate anything like a good return.
At the same time, Van Dijk has started to forfeit the aura of invulnerability he has held since his £75m transfer from Southampton in January 2018.
Van Dijk has received little support by defensive partner Ibrahima Konate's loss of form, along with Milos Kerkez struggling to adapt at left-back. But the renowned star has also had significant difficulties, as proved by his desperate handball that resulted in a penalty in the heavyweight Champions League loss to PSV Eindhoven at Anfield.
It was encapsulated in the 67th minute on Wednesday when Chemsdine Talbi gave Sunderland a merited lead, Van Dijk giving the ball away before backing away and averting his body on a 25-yard shot that struck him and looped out of the reach of goalkeeper Alisson.
For a defender of such undoubted greatness, 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 uncharacteristic failure to take charge, Sunderland's Talbi taking advantage.
"Van Dijk gives the ball away and then he just backs off. 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 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 caliber must not be discarded after securing 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 lowest recovery numbers 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 sole responsibility alone in a Liverpool team packed with experience, it was absent here. No-one was motivating a team that once again looked bewildered to seize the initiative by the initiative.
Van Dijk's subpar showing, 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 exception rather than the standard.
Slot kept faith with the side that halted a run of nine losses in 12 games at London Stadium, Salah once more watching from the sidelines.
The Egyptian was introduced at the start of the second half as the Kop looked to him for inspiration. It failed to materialize, with £125m Alexander Isak also ineffective 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 deflected in off Nordi Mukiele to set up what Liverpool hoped would be a grandstand finish.
Stoppage-time tension came - but at the other end. Liverpool were only saved from humiliation 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 fading champions ultimately had to accept the point 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, ponderous and short on invention. Even the typical final push after the equaliser carried scant belief. 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 reaping the benefits for a summer of serious ambition in the transfer market, coupled with the superb management of Regis le Bris.
The Black Cats were adventurous, assured and threatening.
Sunderland are now sixth in the Premier League with 23 points. It is telling of the manner in which they have grown into 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 a case of going back to basics.
Liam is a seasoned sports analyst with over a decade of experience in odds modeling and betting strategy.