Darwin Nunez:
The Uruguayan may have had a wasteful evening here on Saturday, but he only needed 20-odd minutes to make his mark this time around.
Emerging from the bench to replace Curtis Jones, Nunez, as is his way, was straight into the thick of the action. There are no half-measures with the Uruguayan, whose endeavour, attitude and all-action style has already endeared him to the Anfield faithful.
He ensured a dull game would have a colourful finale. It was his header, spilled by Napoli keeper Alex Meret, which allowed Salah to force home the opener, five minutes from the end of the 90. Soon after, he looked to have set the Egyptian up for another in front of the Kop, only for Leo Ostigard to make a goal-saving intervention.
No worries, however. Nunez would have the last say, smashing home the easiest goal of his career after Meret had fumbled another header, this time from Virgil van Dijk.
The offside flag curtailed his initial celebrations, but after a lengthy VAR check the goal was given, his seventh in a red shirt.
'Nunez, Nunez, Nunez!' sang the Kop. They love him already. And the best is yet to come.
Ibrahima Konate:
It takes a lot to keep Napoli quiet, but Liverpool managed it, becoming the first side to beat the Serie A leaders this season, and only the second to stop Luciano Spalletti's brilliant side from scoring.
The Reds needed a close VAR call to preserve their clean sheet, with Ostigard's header, early in the second half, ruled out for offside. But more important was the performance of Konate alongside Van Dijk, with the Frenchman outstanding on only his second start of the campaign.
After a nervy start, Konate got himself on the front foot and had Anfield voicing its appreciation, stepping in to win the ball, using his pace and strength to cover off the counter-attack and at one point driving, Joel Matip style, into midfield to get his side moving.
Bad news for Joe Gomez, perhaps, who will struggle to gain his place back for Sunday's trip to Tottenham, but good news, most definitely, for Klopp, who saw his side look a whole lot more secure, and against top-class opposition too.
Youth:
The present may be rather troubling for Liverpool, given their domestic struggles, but we at least saw a glimpse of the future here, and it doesn't look bad at all.
The Reds finished with six players aged 23 or under on the field, four of whom are teenagers.
Nunez (23) grabbed the headlines and Konate (23) was probably the player of the match otherwise, but the fact that Calvin Ramsay (19) could finally make his senior debut was another bonus, while the sight of Stefan Bajcetic getting a few more minutes tells you just how much Klopp and his stiff think of the 17-year-old midfielder.
Bajcetic was alongside Harvey Elliott and Fabio Carvalho, relative veterans at 19, by the end and, like Ramsay, did not look in any way fazed by the stage, the opposition or the opportunity.
With a Carabao Cup tie here against Derby to come next week, further opportunities should soon present themselves for these gifted young talents. Let's see if they can take them, and make Klopp's life a whole lot easier by doing so.