Zverev beat Hasse, coming back from 2:5 in the 2nd set. Sacha is sometimes really painful to watch. I could see that in the 2nd set, he had his ups and downs. What is worrying is his loss of serve. He gets broken so easily. Like in the 2nd set he gets broken, later he breaks back and in the next game he is broken again. I mean come on, he has a good serve he should hold it. He needs to do something about the double faults, it looks to me like an issue where he gives free points and looses confidence to hold a serve. Never saw him serve and volley, but why? Lendl was watching him, but it doesn't look like they are improving or changing anything.
Anyways, he got a win in 2 sets, got back in 2nd and won 7:5, Hasse had a BP at 6:5, 30:40 and they played a 41 shot rally which Zverev won.