The Pole is the best in the women's game at this shot.
The Swiss didn't want to brave the traffic and stayed in Manhattan on Wednesday for practice.
"There are players out there that are more dedicated, that strive to get better every day...I'm not that guy,” Kyrgios said.
Former Wimbledon finalist falls in US Open first round for second straight year.
Teenager shares insight on what makes Federer great and what he aims to emulate.
"You don't retire Saturday morning," world No. 1 said of Murray's Saturday withdrawal from the US Open.
World No. 1 loves the energy, but not the noise of Arthur Ashe Stadium.
