Zverev's massive issues returning Fritz's serve are maybe the main reason he keeps losing to him and no one is really bringing it up. Fritz's 1st serve points won% in his 5 wins against Zverev: Wimbledon 83.3%, USO 81.5%, Laver Cup 86.8%, ATP Finals 85.1%, today 88.1%.

https://www.tennisabstract.com/cgi-bin/player-classic.cgi?p=TaylorFritz

Everyone just talks about how they match up in rallies and it's true that Zverev's patternized and almost robotic style doesn't really do well at exploiting Fritz's movement

But when you're basically praying your opponent misses their 1st serve it's not going to be good lol