Zverev vs. a nearly 33 years old player playing his 2nd match of the day due to rain. Couple that with the loss from last week and it wasn't too surprising
Yeah, I think it is tough for him to play a lot of matches in a row and I don't blame for him for not wanting to play qualies. I hope that he can extend his career as long as possible even if it means reduced schedule. The day he retired will be a very sad day for me.