Berdych would have had a way better career than Sinner if he moved as well as Sinner. And against a better field. Berdych's only problem was movement. If he moved liked Sinner for his size, theres no telling what he would have accomplished. Sinner aint doing this, since he should have lost straight sets to the baby version of Fed this year who was also 5-6 years years older or something?. If you give Berdych Sinner's movement and place him in this era, Djokovic's record are already gone. It would be a forgone conclusion