I'd really like to see Alcaraz vs a fully-fit Nadal, that would be some match ... and I'd definitely have Nadal as favourite for it.
But as everyone is saying, Nadal is not fully-fit yet, and is slowly making a comeback. Alcaraz should probably be favourite, but even so I don't think it will be easy for him. Nadal can never be written off, as we saw in the AO only a few months ago.
Now another big challenge for Alcaraz, he will be up against Novak Djokovic. So this is going to be another interesting match to witness. If Alcaraz continue with his magical run, his chances of winning this tournament increases.
We will wait then for the next semifinalist, between Rublev and Tsitsipas, FAA vs Zverev.
Alcaraz is already showing that he will be a great player, and that he could even surpass the achievements of his role model Nadal.
I read somewhere that he achieved more than Nadal when Nadal was his age.
All that matters is that he is bypassed by injuries and that he remains psychologically strong and stable.
With him, Medvedev, Zverev and other young tennis stars, it will be increasingly difficult for Nadal and Djokovic to win major tennis tournaments.