Carlos Alcaraz doesn't concern himself with replacing the big three but rather enjoys tennis and transmits the joy of playing it.
Alcaraz is widely considered the biggest talent to emerge in tennis since the big three. His achievements so far seem to back that notion up however he's mostly focused on himself and his own journey. That journey is currently in Rio where he's enjoying himself on the court, booking another final.
I have a special affection here in Rio. The public supported me a lot. My moments on the court in Rio were spectacular and today was proof of that.
Alcaraz has been touted as a player who will lead tennis after all members of the big three are gone but he's not concerned about that. He thinks that people want to see great tennis and players who enjoy playing rather than one player specifically.
I think people want to see joy, incredible shots. I don't think about being the player people want to see after the Big 3, I just want to be who I am and transmit joy on the court.