Liverpool have made some superb signings since Jurgen Klopp became manager in 2015.
Mohamed Salah, Roberto Firmino, Andy Robertson and Alisson were all brought in by the German and have excelled ever since, especially Salah.
But none compare to Virgil van Dijk, who has been nothing short of sensational since joining Liverpool from Southampton for £75m in January.
It's no exaggeration that the Dutchman has single-handedly transformed Liverpool from Premier League hopefuls to genuine contenders in his 12 months at the club - he's been that good.
And he was once again out of this world on Friday night as Liverpool won 2-0 away to Wolves to stay top of the table and extend their unbeaten run to 18 games.
Van Dijk not only kept speed merchant Adama Traore quiet but scored Liverpool's all-important second goal with a lovely finish from Salah's cross.
His performance drew special praise from Klopp, who said after the game: "I have no problem talking about individual performances, we do this constantly.
"He (Van Dijk) is in a good moment, he is very important for us and hopefully he can stay like this. The work-rate in general is just outstanding.
"I love the boy. We won, deserved, and Virg played a proper part in that."
For the past 18 months Salah has been regarded as Liverpool's best and more important player, but there's a strong argument to be made that those titles belong to Van Dijk.
His statistics since joining the Reds have now emerged, per Squawka and @DaveOCKOP, and they show just how incredible he's been.
Most touches, most minutes, most passes, most duels won, most clearances, most aerial duels won, most interceptions, most shots blocked - Van Dijk beats Liverpool's players in every single one.
It's testament to the 27-year-old's composure and all-round ability - not to mention Liverpool's style of play - that he's even completed the most passes as a centre-back.
Salah may be the Premier League's top goalscorer on 11 goals, but it's not worth imagining where Liverpool would be right now without Van Dijk.