I watched this match, and, well, Zverev has become such a pusher. Ok, his groundies have always been pretty soft, but the puzzling thing is that he doesn't try to attack at all and only pushes/slices the ball back into the court. I have watched him in the past, and he has an ability to serve&volley and to finish the points after rushing the net, but he's not using it anymore
Those very few times, when he actually went to the net, he didn't look very comfortable.
Only followed the last couple of games on a constantly buffering livestream but, from what the commentator said, it sounded like a match of ups and downs.
It was. Not a quality match for sure.