The German is riding a winning streak dating back to the Olympic Games and he is establishing himself as the biggest threat to Novak Djokovic in his pursuit for a calendar grand slam. For Zverev it all starts with his serve as he is yet to face a break point and he admitted as much after the match:
“My serve is kind of the key to my game. When it's working I'm playing great. When it's not, I'm losing matches like I did
at Wimbledon. It's no secret that my serve is probably the most important shot in my
game, and I'm happy with how it's working… The matches are not going to
get easier and I will need that to be my weapon."
Zverev was picked by Boris Becker as the man most likely to defeat Novak Djokovic and the Serbian has had his issues with Zverev in the past. The German is playing with immense confidence and with a draw pretty wide open it's hard to see who will stop him. Becker also noted a shift in mentality in Zverev and Sascha explained it:
“The process started at the Olympics for me, and the match against
Novak. That kind of started it off, because I was down
badly, and I managed to win with great tennis."
He further said:
“It was very important for me to kind of back it up in Cincinnati,
because a lot of the times players that for the first time in their
career win something really big like a Grand Slam title or a gold medal,
they do tend to go downhill a little bit. So it was important for me to
go to Cincinnati, to a place where I have never won a match before this
year, and have a great tournament.”