I know I have said it already before, but watching Sinner practice in person was spectacular to observe. You can literally call him a silent assassin. He is quiet (does not grunt at all), but when he starts hitting groundstrokes, you better be ready. I have never watched Bjorn Borg at all, but in terms of facial expressions and demeanor, Sinner is probably the closest to Borg.
Unfortunately, Sinner lost the 1st set to Fritz. I wonder if the Walkover affected his rhythm and momentum, just a tiny bit…