Roger Federer of Switzerland speaks at the press conference ahead of Australian Open 2017 at Melbourne Park in Melbourne, Australia, Jan. 14, 2017. Australian Open 2017 will take place at Melbourne Park from Jan. 16 to Jan. 29. (Xinhua/Bai Xue)
Roger Federer of Switzerland speaks at the press conference ahead of Australian Open 2017 at Melbourne Park in Melbourne, Australia, Jan. 14, 2017. Australian Open 2017 will take place at Melbourne Park from Jan. 16 to Jan. 29. (Xinhua/Bai Xue)