Sinner is improving a lot, Nadal even admitting post interview
https://www.atptour.com/en/news/nadal-rome-2021-wednesday-reaction
So for now, Sinner is undergoing a lot processes mentality and physically, just give him less than a year and he will make it difficult for the mens tournaments as he will surprise us with big wins.
I agree, we can't forget that Sinner is only 19 years old but he will get there. It's nice to see that the pool of young talents in men's tennis keeps on increasing!
Berrettini vs Tsitsipas - this one as well, Berrettini is riding on a momentum from the last tournament, although he lost to Zverev, he is also showing signs to be in the contention here.
Tsitsipas for the win.