The glaring spotlight that has been trained on one global Liverpool legend turned to another on Anfield's most recent disappointing night.
Mohamed Salah has been under scrutiny for his subpar performances this campaign - and was consigned to the bench for the consecutive Premier League game as Sunderland arrived on Wednesday.
But it was skipper Virgil van Dijk, a exceptional defensive rock as Liverpool have swept up the full collection of major prizes, whose poor form came under the microscope during the draw.
Van Dijk, 34, and Salah, 33, both inked new lucrative two-year deals in the summer, with not one Liverpool eyebrow raised at the prospect of offering extensions to a veteran duo much nearer to the end of their careers than the start.
Truly, it was a cause of celebration - but now there is no denying the stark fact that levels have fallen concerningly for both.
Liverpool have been vulnerable 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 a good return.
Simultaneously, Van Dijk has started to lose the air of invincibility he has carried since his £75m switch from Southampton in January 2018.
Van Dijk has faced additional challenges by center-back colleague 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 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 giving the ball away before retreating and turning his back on a 25-yard shot that hit him and floated out of the reach of goalkeeper Alisson.
For a defender of such undoubted greatness, Van Dijk has an peculiar tendency of turning away on the ball, sometimes to Liverpool's detriment.
Misfortune at the finale, yes, but it was a situation Van Dijk courted with his uncharacteristic failure to take charge, Sunderland's Talbi taking advantage.
"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 dominant, but right now he's making mistakes and doubting 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 pale imitation of his usual imperious self 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 exclusive domain alone in a Liverpool team full of experience, it was absent here. No-one was inspiring a team that once again looked clueless to grab the game by the initiative.
Van Dijk's difficult night, which ended with him being used as the emergency option of acting as an makeshift forward, was representative of a horribly mediocre Liverpool performance - which made Sunday's win at West Ham seem like the exception rather than the norm.
Slot stayed 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 turned to him for inspiration. It never came, with £125m Alexander Isak also ineffective after opening his account 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 outstanding recovery run allowed him to turn Sunderland substitute Wilson Isidor's shot off the line after he had rounded keeper Alisson.
Slot and his struggling title-holders ultimately had to take a point 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 devoid of creativity. Even the customary late surge after the equaliser carried scant belief. Displays like this are the reason their defense of their crown has fallen apart.
But significant praise 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 positive, confident 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 adapted to 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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