This is a great win for Holger Rune over Novak so he deserves congratulations. It's great to have more top talent out there.
Here is my suggestion to those who start making predictions and planning for Novak to retire now.
Just a reminder to those who now might say the torch has been passed with this win. Not yet. I remember watching fresh faces taking out Laver, Rosewall, Connors, Mac, Sampras, Agassi, Fed, and Nadal. It's inevitable even at that level to lose matches to relative unknowns and outside of tennis enthusiasts, anyone lower than 1 or 2 is an unknown. There are many really fantastic tennis players out there in the top 50 and even the top 100. On any given day, you can lose to any of them no matter how great your record.
As for being a future best ever and stacking more slams than the big 3 have so far, I take all predictions in that area as chatter. First hit 20 slams and you can talk about someone surpassing them. In this case, first hit 1. He will probably do that soon which as always is good for tennis.