The glaring spotlight that has fallen upon one global Liverpool icon switched to another on Anfield's latest desperate night.
Mohamed Salah has been under scrutiny for his poor form this season - and was placed on the bench for the second successive Premier League game as Sunderland arrived on Wednesday.
But it was captain Virgil van Dijk, a exceptional defensive bedrock as Liverpool have collected the complete set of top honors, whose struggles became the focus during the 1-1 draw.
Van Dijk, 34, and Salah, 33, both signed high-value two-year deals in the summer, with barely a Liverpool question asked at the idea of securing the futures to a seasoned pair much nearer to 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 performance has dipped alarmingly for both.
Liverpool have been vulnerable in defence ever since manager Arne Slot and the club's scouting department began a £450m summer overhaul that has yet to prove anything like its worth.
At the same time, Van Dijk has started to shed the sense of being untouchable he has possessed since his £75m transfer from Southampton in January 2018.
Van Dijk has not been helped by fellow defender Ibrahima Konate's loss of form, along with Milos Kerkez failing to settle at left-back. But the esteemed defender has also struggled badly, as proved by his rash 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 losing possession before retreating 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 unquestionable quality, Van Dijk has an curious trait of shying away on the ball, sometimes to Liverpool's disadvantage.
Bad luck at the conclusion, yes, but it was a situation Van Dijk provoked with his uncharacteristic failure to act decisively, Sunderland's Talbi taking advantage.
"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 couldn't make a mistake. Every game he was commanding, but right now he's slipping up and doubting himself."
As with Salah, a player of Van Dijk's stature must not be written off 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 faded version of his usual dominant persona this season, with the worst recoveries 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 lacking here. No-one was rousing a team that once again looked bewildered to take control by the initiative.
Van Dijk's subpar showing, which ended with him being used as the emergency option of acting as an last-ditch attacker, was indicative of a deeply underwhelming Liverpool performance - which made Sunday's win at West Ham seem like the exception rather than the rule.
Slot kept faith with the side that ended 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 failed to materialize, with £125m Alexander Isak also ineffective 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 been turned 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 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 rounded keeper Alisson.
Slot and his underperforming defending champions 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, ponderous and short on invention. Even the customary late surge after the equaliser carried scant belief. Displays like this are the reason their title defence 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 notable ambition in the transfer market, coupled with the excellent coaching of Regis le Bris.
The Black Cats were adventurous, confident and threatening.
Sunderland are now sixth in the Premier League with 23 points. It is indicative of the manner in which they have grown into 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.